Anchor Phase 8

1→# Anchor Implementation Plan
     2→
     3→C engine with YueScript scripting, OpenGL rendering, targeting Windows and Web.
     4→
     5→---
     6→
     7→## Summary of Key Decisions
     8→
     9→| Area | Decision | Rationale |
    10→|------|----------|-----------|
    11→| Renderer | OpenGL | Smooth rotation, additive blending, performance headroom, console-portable |
    12→| Audio | miniaudio + stb_vorbis | Single-header, pitch shifting, OGG support |
    13→| Physics | Box2D 3.1 | Already used, true ball-to-ball collisions needed |
    14→| Scripting | Lua 5.4 + YueScript | Build-time compilation with `-r` flag for line numbers |
    15→| Timestep | Fixed 120Hz physics, 60Hz render | Decoupled for pixel-perfect visuals with responsive input |
    16→| Resolution | Per-game configurable | 480×270, 640×360, or custom; aspect-ratio scaling with letterboxing |
    17→| C Structure | Single anchor.c | Monolithic file, easier navigation |
    18→| Resources | Live forever | Games are small enough; no unloading needed |
    19→| Linking | Static | No DLLs; SDL2, Lua, audio all compiled in |
    20→| Distribution | Single executable | Zip-append for game content, extractable by modders |
    21→
    22→---
    23→
    24→## Build Strategy
    25→
    26→### YueScript Compilation
    27→
    28→**Build-time compilation** — compile `.yue` → `.lua` during build, not at runtime.
    29→
    30→```
... [1526 more lines]

E:\a327ex\Anchor\reference\love-compare\anchor\external\sort.lua
E:\a327ex\Anchor\reference\super emoji box\lun\external\sort.lua
E:\a327ex\Anchor\reference\love-compare\anchor\external\profile.lua
E:\a327ex\Anchor\reference\love-compare\anchor\external\utf8.lua
E:\a327ex\Anchor\reference\super emoji box\lun\external\profile.lua
E:\a327ex\Anchor\reference\super emoji box\lun\external\utf8.lua
E:\a327ex\Anchor\reference\super emoji box\tools\build_for_windows.lua
E:\a327ex\Anchor\reference\super emoji box\lun\class.lua
E:\a327ex\Anchor\reference\super emoji box\lun\joint.lua
E:\a327ex\Anchor\reference\super emoji box\lun\music_player.lua
E:\a327ex\Anchor\reference\super emoji box\lun\shake.lua
E:\a327ex\Anchor\reference\super emoji box\lun\spring.lua
E:\a327ex\Anchor\reference\super emoji box\lun\stats.lua
E:\a327ex\Anchor\reference\super emoji box\lun\string.lua
E:\a327ex\Anchor\reference\super emoji box\lun\ui.lua
E:\a327ex\Anchor\reference\super emoji box\lun\mover.lua
E:\a327ex\Anchor\reference\super emoji box\lun\sound.lua
E:\a327ex\Anchor\reference\super emoji box\lun\camera.lua
E:\a327ex\Anchor\reference\super emoji box\lun\random.lua
E:\a327ex\Anchor\reference\super emoji box\lun\color.lua
E:\a327ex\Anchor\reference\super emoji box\lun\input.lua
E:\a327ex\Anchor\reference\super emoji box\lun\mouse_hover.lua
E:\a327ex\Anchor\reference\super emoji box\lun\grid.lua
E:\a327ex\Anchor\reference\super emoji box\lun\text.lua
E:\a327ex\Anchor\reference\super emoji box\lun\animation.lua
E:\a327ex\Anchor\reference\super emoji box\lun\physics_world.lua
E:\a327ex\Anchor\reference\super emoji box\conf.lua
E:\a327ex\Anchor\reference\super emoji box\lun\layer.lua
E:\a327ex\Anchor\reference\super emoji box\lun\tiled_map.lua
E:\a327ex\Anchor\reference\super emoji box\lun\array.lua
... [56 more lines]

1→--[[
     2→  This is a module that contains functions dealing with randomness.
     3→  When initialized, it creates a random number generator object based on the seed passed in.
     4→  The global "lun" object is initialized as an instance of this, and thus should be used as the default RNG object.
     5→  Do not use Lua's default random functions such as "math.random" as those have unpredictable behavior in them.
     6→  Examples:
     7→    rng = object():random()
     8→    rng:random_float(0, 5)       -> returns a random float between 0 and 5
     9→    rng:random_int(1, 10)        -> returns a random integer between 1 and 10
    10→    lun:random_int(1, 10)        -> same as above except using the lun object instead
    11→    lun:random_weighted(1, 4, 5) -> 10% chance to return 1, 40% chance to return 2, 50% chance to return 3
    12→]]--
    13→random = class:class_new()
    14→function random:random(seed)
    15→  self.tags.random = true
    16→  self.seed = seed or os.time()
    17→  self.generator = love.math.newRandomGenerator(self.seed)
    18→  return self
    19→end
    20→
    21→--[[
    22→  Returns a random float between 0 and 2*math.pi.
    23→  This is no different from "self:random_float(0, 2*math.pi)".
    24→  Examples: 
    25→    lun:random_angle() -> 0
    26→    lun:random_angle() -> 1.56
    27→    lun:random_angle() -> 3.34
    28→    lun:random_angle() -> 6.28
    29→]]--
    30→function random:random_angle()
... [88 more lines]

1→--[[
     2→  Returns the angle of the vector.
     3→  Examples:
     4→    math.angle()      -> error, expects 2 numbers
     5→    math.angle(1, 0)  -> 0
     6→    math.angle(-1, 0) -> math.pi
     7→    math.angle(0, 1)  -> math.pi/2
     8→    math.angle(0, -1) -> -math.pi/2
     9→]]--
    10→function math.angle(x, y)
    11→  return math.atan2(y, x)
    12→end
    13→
    14→--[[
    15→  Returns the smallest difference between two angles.
    16→  The direction of the difference tells which way you'd need to move from the first to the second angle.
    17→  If you don't care about the direction then just math.abs it.
    18→  Examples:
    19→    math.angle_delta()                      -> error, expects 2 numbers
    20→    math.angle_delta(0, 0)                  -> 0
    21→    math.angle_delta(math.pi, math.pi/4)    -> -3*math.pi/4
    22→    math.angle_delta(-math.pi/2, math.pi/4) -> 3*math.pi/4
    23→    math.angle_delta(-math.pi, math.pi)     -> 0
    24→    math.angle_delta(-math.pi, -math.pi/2)  -> math.pi/2
    25→--]]
    26→function math.angle_delta(a, b)
    27→  local d = math.loop(a-b, 2*math.pi)
    28→  if d > math.pi then d = d - 2*math.pi end
    29→  return -d
    30→end
... [972 more lines]

[
  {
    "type": "text",
    "text": "Now let me compile a comprehensive research summary based on all the information I've gathered. Let me create one final comprehensive document:\n\nBased on my thorough research into the RNG/Random APIs across 16+ game engines, here is a complete breakdown of each engine's random functionality:\n\n## COMPREHENSIVE GAME ENGINE RANDOM/RNG API RESEARCH\n\n---\n\n### 1. L\u00d6VE (love.math)\n\n**Core Functions:**\n- `love.math.random()` - Returns float [0,1)\n- `love.math.random(max)` - Returns int [1, max]\n- `love.math.random(min, max)` - Returns int [min, max]\n\n**Seed/State:**\n- `love.math.setRandomSeed(seed)` - Set seed for deterministic sequences\n\n**Advanced:**\n- `love.math.randomNormal()` - Normal distribution (Gaussian)\n- `love.math.newRandomGenerator(seed?)` - Create independent RNG instance\n\n**Key Features:**\n- Cross-platform consistency (unlike Lua's math.random)\n- Better statistical properties than standard Lua\n- Can create multiple independent random generators for procedural generation\n\n**Algorithm:** MT19937 (Mersenne Twister variant)\n\n---\n\n### 2. Unity (Random class)\n\n**Core Functions:**\n- `Random.value` - Float [0.0, 1.0] inclusive\n- `Random.Range(min, max)` - Float or int depending on parameter types\n- `Random.Range(min, max)` - Returns float [minInclusive, maxInclusive]\n\n**Vector/Rotation:**\n- `Random.insideUnitCircle` - Random point inside/on circle radius 1.0\n- `Random.insideUnitSphere` - Random point inside/on sphere radius 1.0\n- `Random.onUnitSphere` - Random point on sphere surface\n- `Random.rotation` - Random quaternion rotation\n- `Random.rotationUniform` - Uniform random rotation\n\n**Color:**\n- `Random.ColorHSV()` - Random color with HSV and alpha ranges\n\n**State:**\n- `Random.InitState(seed)` - Seed the generator\n- `Random.state` - Get/set complete generator state (for replay/determinism)\n\n**Key Features:**\n- Static class with global shared state\n- Xorshift128 algorithm\n- Thread-unsafe by default\n- Not suitable for multithreading\n\n---\n\n### 3. Godot (RandomNumberGenerator class)\n\n**Core Functions:**\n- `randi()` - Global function: random uint32\n- `randf()` - Global function: random float [0, 1)\n- `randi_range(from, to)` - Global function: random int [from, to] (inclusive)\n- `randf_range(from, to)` - Global function: random float [from, to]\n\n**Instance Methods:**\n- `rng.randi()` - Random uint32\n- `rng.randf()` - Random float [0, 1)\n- `rng.randi_range(from, to)` - Random int in range\n- `rng.randf_range(from, to)` - Random float in range\n- `rng.randfn(mean, deviation)` - Normal distribution\n\n**State:**\n- `rng.seed = value` - Set seed\n- `rng.state` - Get/set full generator state (for replays)\n\n**Key Features:**\n- PCG32 algorithm (fast, statistically excellent)\n- Instance-based for procedural generation independence\n- Note: Warning about avalanche effect with similar seeds\n- Use hash function on external seeds for better distribution\n\n---\n\n### 4. Construct 3 (Advanced Random)\n\n**Core Expressions:**\n- `random(min, max)` - Random float [min, max)\n- `choose(a, b, c, ...)` - Pick one parameter randomly\n  - Can use weighted selection by repeating values\n  - Works with strings and numbers\n- `int(random(a, b))` - Convert to integer\n\n**Advanced Functions:**\n- Noise functions available in Advanced Random plugin\n- 2D/3D Perlin noise available\n- Seeding available through Advanced Random object\n\n**Key Features:**\n- Expression-based system (not code-like)\n- Can manipulate selection weight by repeating values\n- Built-in Perlin/noise support via Advanced Random plugin\n- Seed management available in Advanced Random\n\n---\n\n### 5. HaxeFlixel (FlxRandom)\n\n**Core Functions:**\n- `FlxG.random.int(min=0, max=MAX, ?excludes)` - Random int with optional exclusions\n- `FlxG.random.float(min=0, max=1, ?excludes)` - Random float with optional exclusions\n- `FlxG.random.bool(chance=50)` - Boolean based on % chance (0-100)\n\n**Statistical:**\n- `FlxG.random.floatNormal(mean=0, stdDev=1)` - Gaussian distribution using Box-Muller\n\n**Weight/Choice:**\n- `FlxG.random.getObject(array, ?weights, startIdx=0, ?endIdx)` - Pick from array, optionally weighted\n- `FlxG.random.weightedPick(weightsArray)` - Returns index based on weights\n  - Example: `[50, 30, 20]` = 50% chance idx 0, 30% idx 1, 20% idx 2\n\n**Utilities:**\n- `FlxG.random.sign(chance=50)` - Returns 1 or -1\n- `FlxG.random.color(?min, ?max, ?alpha, greyscale=false)` - Random color\n- `FlxG.random.shuffle(array)` - Fisher-Yates in-place shuffle\n\n**State:**\n- `FlxG.random.currentSeed` - Retrieve current seed\n- `FlxG.random.resetInitialSeed()` - Reset to new random seed\n\n**Key Features:**\n- Excludes array support for filtering results\n- Generic type support (works with any type)\n- Can create independent instances: `new FlxRandom(?seed)`\n- Warning: `resetInitialSeed()` is non-deterministic (affects recording)\n\n---\n\n### 6. Heaps (Haxe-based)\n\n**Status:** No dedicated Random class in Heaps core\n**Recommendation:** Uses Haxe standard library or community \"random\" haxelib\n- `Math.random()` - Haxe standard [0, 1)\n- `Std.random(n)` - Haxe standard [0, n)\n\n**Third-party \"random\" library (1.4.1):**\n- `Random.int(min, max)` - Random int in range\n- `Random.float(min, max)` - Random float in range\n- `Random.bool()` - True/false\n- `Random.string(length)` - Random string (A-Za-z0-9)\n- `Random.fromArray(arr)` - Pick from array\n- `Random.shuffle(arr)` - Fisher-Yates shuffle\n\n**Limitation:** No seeding control (just uses platform default)\n\n---\n\n### 7. Ceramic (Haxe-based, built on Heaps)\n\n**Status:** No dedicated random module found in standard API\n- Inherits Haxe's Math.random() and standard library\n- Has particle system (ceramic.Particles, ceramic.ParticleEmitter) based on FlxEmitter\n- Could implement FlxRandom-style API or use platform random\n\n**Note:** Ceramic is still developing, documentation is improving\n\n---\n\n### 8. Cute Framework (C/C++)\n\n**Status:** No dedicated random.h found in official repos\n**Framework includes:**\n- cute_math.h - Vector and matrix math\n- Appears to use standard C rand() or custom implementation\n- Not documented in searchable online sources\n- **Recommendation:** Check GitHub source directly:\n  - https://github.com/RandyGaul/cute_framework\n  - https://github.com/RandyGaul/cute_headers\n\n---\n\n### 9. Phaser (Phaser.Math.RND / RandomDataGenerator)\n\n**Core Functions:**\n- `rnd.frac()` - Float [0, 1)\n- `rnd.integer()` - Random uint32\n- `rnd.real()` - Float [0, 2^32)\n- `rnd.between(min, max)` / `rnd.integerInRange(min, max)` - Int [min, max] inclusive\n- `rnd.realInRange(min, max)` - Float [min, max]\n- `rnd.normal()` - Float [-1, 1]\n\n**Angle/Rotation:**\n- `rnd.angle()` - Degrees [-180, 180]\n- `rnd.rotation()` - Radians [-\u03c0, \u03c0]\n\n**Array/Data:**\n- `rnd.pick(array)` - Random element\n- `rnd.weightedPick(array)` - Favors earlier entries\n- `rnd.shuffle(array)` - Shuffle in-place\n- `rnd.timestamp(min, max)` - Random timestamp (default 2000-2020)\n- `rnd.uuid()` - RFC4122 v4 UUID\n\n**State:**\n- `rnd.sow(seeds)` - Reset seed\n- `rnd.state` - Get/set generator state\n- `new Phaser.Math.RandomDataGenerator(seed)` - Create instance\n\n**Static Methods:**\n- `Phaser.Math.Between(min, max)` - Int [min, max]\n- `Phaser.Math.FloatBetween(min, max)` - Float [min, max)\n- `Phaser.Math.RandomXY(vector, scale)` - Random 2D vector [-1, 1]\n- `Phaser.Math.RandomXYZ(vector, radius)` - Random 3D sphere point\n\n**Access:** `Phaser.Math.RND` (pre-seeded instance) or create new\n\n---\n\n### 10. p5.js / p5play\n\n**Core Functions:**\n- `random()` - Float [0, 1)\n- `random(max)` - Float [0, max)\n- `random(min, max)` - Float [min, max)\n- `random(array)` - Pick element from array\n\n**Statistical:**\n- `randomGaussian()` - Normal distribution (mean=0, stdDev=1)\n- `randomGaussian(mean)` - Normal with specified mean\n- `randomGaussian(mean, stdDev)` - Full normal distribution\n\n**Vector:**\n- `p5.Vector.random2D()` - Random 2D unit vector\n- `p5.Vector.random3D()` - Random 3D unit vector\n\n**State:**\n- `randomSeed(seed)` - Set seed for reproducibility\n\n**p5play Additions:**\n- `Randomizer.nextInt(low, high)` - Random int\n- `Randomizer.nextBoolean()` - Random bool\n- `Randomizer.nextFloat(low, high)` - Random float\n- `Randomizer.nextColor()` - Random color\n\n---\n\n### 11. PixiJS\n\n**Status:** Limited built-in random utilities\n\n**Via Math Module:**\n- `randomInt(min, max)` - Random integer\n- `randomFloat(min, max)` - Random float\n\n**PixiJS Create engine includes:**\n- Utility functions like `randomInt()` and `randomFloat()`\n- Available through `./engine/utils/random`\n\n**Note:** PixiJS is primarily a rendering engine, not game-focused. For random needs, typically use native JavaScript Math.random() or community libraries\n\n---\n\n### 12. Defold\n\n**Status:** No built-in Lua random API, extended via native modules\n\n**Common Extensions:**\n\n**1. defold-random (PCG-based):**\n- `rnd.range(min, max)` - Random int\n- `rnd.float(min, max)` - Random float\n- Dice rollers: `rnd.d4`, `rnd.d6`, `rnd.d8`, `rnd.d10`, `rnd.d12`, `rnd.d20`, `rnd.d100`\n- `rnd.coin()` - 0 or 1\n- `rnd.dice()` - 1-6\n- Algorithm: PCG (Permutation-Congruential-Generator)\n- Entropy-based seed with time fallback\n\n**2. defold-rng (Multi-algorithm):**\n- Instance-based (non-global state)\n- Multiple algorithm support\n- True procedural generation without state coupling\n\n**3. defold-splitmix64:**\n- SplitMix64 algorithm\n- **Key feature:** Same output on ALL Defold platforms from same seed\n- Java's default PRNG\n- Very fast, passes BigCrush tests\n\n**Installation:** Add as haxelib dependency in game.project\n\n---\n\n### 13. FNA/XNA/MonoGame\n\n**Core Classes:**\n- `System.Random` (.NET base class) - Thread-unsafe\n- `Random.Shared` (static) - Thread-safe for concurrent use\n- `MathHelper.Random` (MonoGame-specific) - PCG-based\n\n**Methods:**\n- `Next()` - Random non-negative int\n- `Next(max)` - Int [0, max)\n- `Next(min, max)` - Int [min, max)\n- `NextDouble()` - Double [0.0, 1.0)\n- `NextSingle()` - Float [0.0, 1.0)\n- `NextInt64()` - Long [0, 2^64)\n- `NextBytes(byte[])` - Fill byte array\n- `Shuffle<T>(T[])` - In-place shuffle (System.Random, .NET 8+)\n- `GetItems<T>()` - Select random items\n- `GetString()` - Random character string\n- `GetHexString()` - Random hex string\n\n**Seeding:**\n- `new Random()` - Default seed\n- `new Random(int seed)` - Specified seed\n\n**Algorithm:**\n- MonoGame MathHelper: PCG (fast, excellent stats)\n- XNA/FNA: .NET base Random algorithm\n\n---\n\n### 14. KaboomJS\n\n**Core Functions:**\n- `rand()` - Float [0, 1) or scaled by bounds\n- `rand(n)` - Float [0, n)\n- `rand(a, b)` - Float [a, b)\n- `rand(vec, scale)` - Works with vectors/colors\n\n**Integer:**\n- `randi()` - Int 0 or 1\n- `randi(n)` - Int [0, n)\n- `randi(a, b)` - Int [a, b)\n\n**Boolean:**\n- `chance(p)` - Boolean with probability p [0, 1]\n\n**Array/Choice:**\n- `choose(array)` - Random element\n\n**State:**\n- `randSeed(?seed)` - Get/set seed\n\n**Key Features:**\n- Clean, intuitive naming\n- Works with numbers, vectors, colors\n- Probability-based boolean (chance())\n\n---\n\n### 15. GameMaker (GML)\n\n**Core Functions:**\n- `random(x)` - Float [0, x)\n- `random_range(min, max)` - Float [min, max)\n- `irandom(max)` - Int [0, max] inclusive\n- `irandom_range(min, max)` - Int [min, max] inclusive (rounds down)\n\n**State:**\n- `random_set_seed(seed)` - Set seed (uint32)\n- `random_get_seed()` - Retrieve current seed (uint32)\n- `randomise()` - Set seed to random value\n\n**Key Features:**\n- Default: Same seed on run (good for debugging)\n- `randomise()` needed to avoid determinism\n- Seed/retrieve pattern useful for procedural generation\n- Can save/restore seed for level replay\n\n---\n\n### 16. L\u00d6VR (VR framework, Lua-based)\n\n**Core Function:**\n- `lovr.math.random()` - Float [0, 1)\n- `lovr.math.random(high)` - One argument variant\n- `lovr.math.random(low, high)` - Range variant\n\n**Key Features:**\n- Cross-platform consistency (like L\u00d6VE)\n- Better randomness than Lua's math.random\n- 3D VR framework built on L\u00d6VE\n\n---\n\n## SYNTHESIS: COMMON PATTERNS & DESIGN DECISIONS\n\n### **API Categories:**\n\n1. **Core Generation:**\n   - Uniform float [0, 1)\n   - Uniform int in range\n   - Both are essential\n\n2. **Distributions:**\n   - Normal/Gaussian (bell curve): FlxRandom, p5.js, Godot, Phaser\n   - Uniform only: Most others\n   - No special distributions: Cute, some simple engines\n\n3. **State Management:**\n   - **Seed-based:** GameMaker (get/set), Godot, L\u00d6VE, Phaser\n   - **Instance-based:** FlxRandom, Defold-rng, Phaser\n   - **Full state save/restore:** Unity, Godot, Phaser (for replays)\n\n4. **Convenience Functions:**\n   - **Boolean by chance:** FlxRandom (bool), KaboomJS (chance), GameMaker (rare)\n   - **Sign (\u00b11):** FlxRandom, Phaser\n   - **Color:** FlxRandom, p5.js (via random), KaboomJS (via vector support)\n   - **Vectors:** p5.js (Vector.random2D/3D), KaboomJS (via vector support), Phaser (RandomXY/Z)\n   - **Rotation/Angle:** Unity, Phaser (rotation/angle methods)\n\n5. **Array Operations:**\n   - **Pick/Choose:** Nearly all (pick, choose, getObject, etc.)\n   - **Weighted pick:** FlxRandom, Phaser (weightedPick)\n   - **Shuffle:** FlxRandom, Phaser, Haxe stdlib, .NET (newer)\n\n6. **Noise Functions:**\n   - **Perlin/Simplex:** Construct 3 (Advanced Random plugin)\n   - Missing from most others (typically imported separately)\n\n### **Algorithm Choices:**\n\n| Engine | Algorithm |\n|--------|-----------|\n| L\u00d6VE | MT19937 variant |\n| Unity | Xorshift128 |\n| Godot | PCG32 |\n| HaxeFlixel | Likely platform default |\n| Phaser | (Unknown, high quality) |\n| GameMaker | (Proprietary) |\n| Defold-splitmix64 | SplitMix64 |\n| MonoGame | PCG (framework-specific) |\n| FNA/XNA | .NET standard |\n| p5.js | (Platform-dependent) |\n\n### **Unique/Interesting Features:**\n\n- **FlxRandom:** Excludes array (filter results), weighted picks\n- **Phaser:** UUID generation, timestamp generation, full state save\n- **GameMaker:** Seed retrieval (useful for procedural generation logging)\n- **Godot:** Normal distribution (randfn)\n- **Defold-splitmix64:** True cross-platform consistency\n- **Unity:** Full quaternion/sphere generation, thread-safe Shared instance\n- **p5.js:** Vector-based randomization built-in\n- **KaboomJS:** Probability-based boolean (intuitive API)\n\n---\n\n## RECOMMENDATIONS FOR ANCHOR API DESIGN:\n\nBased on this research, a comprehensive Anchor Random API should include:\n\n1. **Core (essential):**\n   - Float [0, 1)\n   - Float in range [a, b)\n   - Int in range [a, b]\n\n2. **State:**\n   - Set seed\n   - Get current seed\n   - Save/restore full state (for replays)\n\n3. **Convenience:**\n   - Bool (optional: by chance %)\n   - Sign (\u00b11)\n   - Pick from array\n   - Weighted pick from array\n   - Shuffle array in-place\n\n4. **Advanced (if needed):**\n   - Normal distribution (mean, stdDev)\n   - Angle/rotation\n   - Vector (2D/3D unit vector)\n   - Color\n   - Noise (Perlin/Simplex if CPU permits)\n\n5. **Architectural:**\n   - Global instance + ability to create independent instances\n   - Clear seed management for procedural generation\n   - PCG or Xorshift for balance of speed/quality\n\nSources:\n- [L\u00d6VE Documentation](https://love2d.org/wiki/love.math.random)\n- [Unity Random Class](https://docs.unity3d.com/ScriptReference/Random.html)\n- [Godot RandomNumberGenerator](https://docs.godotengine.org/en/stable/classes/class_randomnumbergenerator.html)\n- [HaxeFlixel FlxRandom](https://api.haxeflixel.com/flixel/math/FlxRandom.html)\n- [Phaser RandomDataGenerator](https://docs.phaser.io/api-documentation/class/math-randomdatagenerator)\n- [p5.js Random Functions](https://p5js.org/reference/#/p5/random)\n- [KaboomJS Documentation](https://kaboomjs.com/)\n- [GameMaker Random Functions](https://manual.gamemaker.io/monthly/en/GameMaker_Language/GML_Reference/Random_Functions/Random_Functions.htm)\n- [Defold Extensions](https://github.com/selimanac/defold-random)\n- [Construct 3 Advanced Random](https://www.construct.net/en/make-games/manuals/construct-3/plugin-reference/advanced-random)\n- [Cute Framework](https://github.com/RandyGaul/cute_framework)\n- [.NET Random Class](https://learn.microsoft.com/en-us/dotnet/api/system.random)\n- [L\u00d6VR Documentation](https://lovr.org/docs/lovr.math.random)"
  },
  {
    "type": "text",
    "text": "agentId: a632ff8 (for resuming to continue this agent's work if needed)"
  }
]

1→# Anchor Engine Specification
     2→
     3→*Anchor is a 2D game engine built around locality of behavior and minimal cognitive overhead. Code that belongs together stays together.*
     4→
     5→---
     6→
     7→## Table of Contents
     8→
     9→1. [Core Philosophy](#core-philosophy)
    10→2. [The Object Tree](#the-object-tree)
    11→3. [Lifecycle](#lifecycle)
    12→4. [Colliders, Springs, and Timers](#colliders-springs-and-timers)
    13→5. [Locality of Behavior](#locality-of-behavior)
    14→6. [Drawing](#drawing)
    15→7. [Lua Syntax Features](#lua-syntax-features)
    16→8. [YueScript Alternative](#yuescript-alternative)
    17→9. [YueScript Class System Integration](#yuescript-class-system-integration)
    18→10. [Technology Stack](#technology-stack)
    19→11. [Rendering](#rendering)
    20→12. [Error Handling](#error-handling)
    21→13. [Build and Distribution](#build-and-distribution)
    22→14. [File Structure](#file-structure)
    23→15. [Performance Path](#performance-path)
    24→16. [Deferred Features](#deferred-features)
    25→
    26→---
    27→
    28→## Core Philosophy
    29→
    30→### Locality of Behavior
... [1473 more lines]

File created successfully at: E:\a327ex\Anchor\reference\phase-8-random-research.md

Command running in background with ID: b47eaa3. Output is being written to: C:\Users\adn\AppData\Local\Temp\claude\E--a327ex-Anchor\tasks\b47eaa3.output

1300→---
  1301→
  1302→## Phase 8: Random
  1303→
  1304→**Goal:** Seedable PRNG for deterministic gameplay and replay support.
  1305→
  1306→### 8.1 Implementation
  1307→- [ ] PCG or xorshift PRNG (fast, good quality)
  1308→- [ ] Seed function
  1309→- [ ] Save/restore RNG state (required for replays)
  1310→- [ ] Consider separate streams for gameplay vs cosmetic RNG
  1311→
  1312→### 8.2 Lua Bindings
  1313→```lua
  1314→an:random_seed(12345)
  1315→local x = an:random_float(0, 100)      -- [0, 100)
  1316→local i = an:random_int(1, 10)         -- [1, 10] inclusive
  1317→local r = an:random_angle()            -- [0, 2π)
  1318→local s = an:random_sign()             -- -1 or 1
  1319→local b = an:random_bool()             -- true or false
  1320→local item = an:random_choice(array)   -- random element
  1321→```
  1322→
  1323→**Deliverable:** Deterministic random.
  1324→
  1325→---
  1326→
  1327→## Phase 9: Text Rendering
  1328→
  1329→**Goal:** Font rendering with per-character effects (handled in YueScript).
... [70 more lines]

The file E:\a327ex\Anchor\docs\ANCHOR_IMPLEMENTATION_PLAN.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1298→**Deliverable:** Full physics with tag-based collision, events, and spatial queries. ✓ Complete
  1299→
  1300→---
  1301→
  1302→## Phase 8: Random
  1303→
  1304→**Goal:** Seedable PRNG for deterministic gameplay and replay support.
  1305→
  1306→See `reference/phase-8-random-research.md` for full API research across 17+ game engines.
  1307→
  1308→---
  1309→
  1310→### Architecture
  1311→
  1312→**Algorithm:** PCG32 (Permuted Congruential Generator)
  1313→- Fast (~1 billion numbers/sec)
  1314→- Excellent statistical quality (passes BigCrush)
  1315→- Small state: 64 bits (easy to save for replays)
  1316→- Period: 2^64 (far more than any game needs)
  1317→
  1318→**API Style:** Flat global functions (not `an:method()` style)
  1319→
  1320→**Multiple Instances:** All functions take optional `rng` parameter. When omitted, uses global RNG.
  1321→
  1322→**Ranges:** All ranges are inclusive: [0, 1], [min, max], [0, 2π]
  1323→
  1324→---
  1325→
  1326→### Implementation Steps
... [255 more lines]

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

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/*
 * Anchor Engine
 * Phase 1: Window + OpenGL + Lua integration
 * Phase 2: Web build (Emscripten/WebGL)
 * Phase 3: Rendering (layers, shapes, sprites, transforms, blend modes)
 */

\#include <stdio.h>
\#include <stdlib.h>
\#include <stdbool.h>
\#include <string.h>
\#include <math.h>

\#ifdef _WIN32
\#include <direct.h>  // _chdir
\#else
\#include <unistd.h>  // chdir
\#endif

\#include <SDL.h>

\#ifdef __EMSCRIPTEN__
    #include <emscripten.h>
    #include <emscripten/html5.h>
    #include <GLES3/gl3.h>
\#else
    #include <glad/gl.h>
\#endif

\#include <lua.h>
... [170 more lines]

995:static lua_State* L = NULL;
2662:// Lua bindings
2663:static int l_layer_create(lua_State* L) {
2673:static int l_layer_rectangle(lua_State* L) {
2684:static int l_layer_circle(lua_State* L) {
2694:static int l_rgba(lua_State* L) {
2704:static int l_set_shape_filter(lua_State* L) {
2716:static int l_timing_resync(lua_State* L) {
2722:static int l_layer_push(lua_State* L) {
2735:static int l_layer_pop(lua_State* L) {
2741:static int l_texture_load(lua_State* L) {
2751:static int l_texture_get_width(lua_State* L) {
2757:static int l_texture_get_height(lua_State* L) {
2764:static int l_sound_load(lua_State* L) {
2774:static int l_sound_play(lua_State* L) {
2782:static int l_sound_set_volume(lua_State* L) {
2787:static int l_music_load(lua_State* L) {
2797:static int l_music_play(lua_State* L) {
2804:static int l_music_stop(lua_State* L) {
2810:static int l_music_set_volume(lua_State* L) {
2816:static int l_audio_set_master_pitch(lua_State* L) {
2822:static int l_layer_draw_texture(lua_State* L) {
2833:static int l_layer_set_blend_mode(lua_State* L) {
2847:static int l_shader_load_file(lua_State* L) {
2857:static int l_shader_load_string(lua_State* L) {
2867:static int l_shader_destroy(lua_State* L) {
2874:static int l_layer_shader_set_float(lua_State* L) {
2883:static int l_layer_shader_set_vec2(lua_State* L) {
2893:static int l_layer_shader_set_vec4(lua_State* L) {
2905:static int l_layer_shader_set_int(lua_State* L) {
... [12 more lines]

4814:    lua_register(L, "layer_create", l_layer_create);
4815:    lua_register(L, "layer_rectangle", l_layer_rectangle);
4816:    lua_register(L, "layer_circle", l_layer_circle);
4817:    lua_register(L, "layer_push", l_layer_push);
4818:    lua_register(L, "layer_pop", l_layer_pop);
4819:    lua_register(L, "layer_draw_texture", l_layer_draw_texture);
4820:    lua_register(L, "layer_set_blend_mode", l_layer_set_blend_mode);
4821:    lua_register(L, "texture_load", l_texture_load);
4822:    lua_register(L, "texture_get_width", l_texture_get_width);
4823:    lua_register(L, "texture_get_height", l_texture_get_height);
4825:    lua_register(L, "sound_load", l_sound_load);
4826:    lua_register(L, "sound_play", l_sound_play);
4827:    lua_register(L, "sound_set_volume", l_sound_set_volume);
4828:    lua_register(L, "music_load", l_music_load);
4829:    lua_register(L, "music_play", l_music_play);
4830:    lua_register(L, "music_stop", l_music_stop);
4831:    lua_register(L, "music_set_volume", l_music_set_volume);
4832:    lua_register(L, "audio_set_master_pitch", l_audio_set_master_pitch);
4833:    lua_register(L, "rgba", l_rgba);
4834:    lua_register(L, "set_shape_filter", l_set_shape_filter);
4835:    lua_register(L, "timing_resync", l_timing_resync);
4837:    lua_register(L, "shader_load_file", l_shader_load_file);
4838:    lua_register(L, "shader_load_string", l_shader_load_string);
4839:    lua_register(L, "shader_destroy", l_shader_destroy);
4841:    lua_register(L, "layer_shader_set_float", l_layer_shader_set_float);
4842:    lua_register(L, "layer_shader_set_vec2", l_layer_shader_set_vec2);
4843:    lua_register(L, "layer_shader_set_vec4", l_layer_shader_set_vec4);
4844:    lua_register(L, "layer_shader_set_int", l_layer_shader_set_int);
4846:    lua_register(L, "layer_apply_shader", l_layer_apply_shader);
4847:    lua_register(L, "layer_draw", l_layer_draw);
... [32 more lines]

4890→    lua_register(L, "physics_set_user_data", l_physics_set_user_data);
  4891→    lua_register(L, "physics_get_user_data", l_physics_get_user_data);
  4892→    // Physics - Shape properties
  4893→    lua_register(L, "physics_shape_set_friction", l_physics_shape_set_friction);
  4894→    lua_register(L, "physics_shape_get_friction", l_physics_shape_get_friction);
  4895→    lua_register(L, "physics_shape_set_restitution", l_physics_shape_set_restitution);
  4896→    lua_register(L, "physics_shape_get_restitution", l_physics_shape_get_restitution);
  4897→    lua_register(L, "physics_shape_is_valid", l_physics_shape_is_valid);
  4898→    lua_register(L, "physics_shape_get_body", l_physics_shape_get_body);
  4899→    lua_register(L, "physics_shape_set_density", l_physics_shape_set_density);
  4900→    lua_register(L, "physics_shape_get_density", l_physics_shape_get_density);
  4901→    // Physics - Additional body queries
  4902→    lua_register(L, "physics_get_body_type", l_physics_get_body_type);
  4903→    lua_register(L, "physics_get_mass", l_physics_get_mass);
  4904→    lua_register(L, "physics_is_awake", l_physics_is_awake);
  4905→    lua_register(L, "physics_set_awake", l_physics_set_awake);
  4906→    // Physics - Event debugging (Step 8)
  4907→    lua_register(L, "physics_debug_events", l_physics_debug_events);
  4908→    // Physics - Event queries (Step 9)
  4909→    lua_register(L, "physics_get_collision_begin", l_physics_get_collision_begin);
  4910→    lua_register(L, "physics_get_collision_end", l_physics_get_collision_end);
  4911→    lua_register(L, "physics_get_hit", l_physics_get_hit);
  4912→    lua_register(L, "physics_get_sensor_begin", l_physics_get_sensor_begin);
  4913→    lua_register(L, "physics_get_sensor_end", l_physics_get_sensor_end);
  4914→    // Physics - Spatial queries (Step 10)
  4915→    lua_register(L, "physics_query_point", l_physics_query_point);
  4916→    lua_register(L, "physics_query_circle", l_physics_query_circle);
  4917→    lua_register(L, "physics_query_aabb", l_physics_query_aabb);
  4918→    lua_register(L, "physics_query_box", l_physics_query_box);
  4919→    lua_register(L, "physics_query_capsule", l_physics_query_capsule);
... [50 more lines]

200→static PhysicsTag* physics_tag_get_by_name(const char* name) {
   201→    int index = physics_tag_find(name);
   202→    if (index < 0) return NULL;
   203→    return &physics_tags[index];
   204→}
   205→
   206→// Physics event buffers
   207→#define MAX_PHYSICS_EVENTS 256
   208→
   209→// Contact begin event (two shapes started touching)
   210→typedef struct {
   211→    b2BodyId body_a;
   212→    b2BodyId body_b;
   213→    b2ShapeId shape_a;
   214→    b2ShapeId shape_b;
   215→    int tag_a;  // Tag index of shape_a
   216→    int tag_b;  // Tag index of shape_b
   217→} PhysicsContactBeginEvent;
   218→
   219→// Contact end event (two shapes stopped touching)
   220→typedef struct {
   221→    b2BodyId body_a;
   222→    b2BodyId body_b;
   223→    b2ShapeId shape_a;
   224→    b2ShapeId shape_b;
   225→    int tag_a;
   226→    int tag_b;
   227→} PhysicsContactEndEvent;
   228→
   229→// Hit event (two shapes collided with speed above threshold)
... [30 more lines]

255→typedef struct {
   256→    b2BodyId sensor_body;
   257→    b2BodyId visitor_body;
   258→    b2ShapeId sensor_shape;
   259→    b2ShapeId visitor_shape;
   260→    int sensor_tag;
   261→    int visitor_tag;
   262→} PhysicsSensorEndEvent;
   263→
   264→// Event buffers
   265→static PhysicsContactBeginEvent contact_begin_events[MAX_PHYSICS_EVENTS];
   266→static int contact_begin_count = 0;
   267→
   268→static PhysicsContactEndEvent contact_end_events[MAX_PHYSICS_EVENTS];
   269→static int contact_end_count = 0;
   270→
   271→static PhysicsHitEvent hit_events[MAX_PHYSICS_EVENTS];
   272→static int hit_count = 0;
   273→
   274→static PhysicsSensorBeginEvent sensor_begin_events[MAX_PHYSICS_EVENTS];
   275→static int sensor_begin_count = 0;
   276→
   277→static PhysicsSensorEndEvent sensor_end_events[MAX_PHYSICS_EVENTS];
   278→static int sensor_end_count = 0;
   279→
   280→// Clear all event buffers (call at start of each physics step)
   281→static void physics_clear_events(void) {
   282→    contact_begin_count = 0;
   283→    contact_end_count = 0;
   284→    hit_count = 0;
... [30 more lines]

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   273→
   274→static PhysicsSensorBeginEvent sensor_begin_events[MAX_PHYSICS_EVENTS];
   275→static int sensor_begin_count = 0;
   276→
   277→static PhysicsSensorEndEvent sensor_end_events[MAX_PHYSICS_EVENTS];
   278→static int sensor_end_count = 0;
   279→
   280→// Random (PCG32)
   281→// PCG32 - Permuted Congruential Generator (32-bit output, 64-bit state)
   282→// Fast, excellent statistical quality, small state for easy replay save/restore
   283→typedef struct {
   284→    uint64_t state;      // RNG state (all values are possible)
   285→    uint64_t increment;  // Controls which RNG sequence (stream) is selected (must be odd)
   286→    uint64_t seed;       // Original seed (for random_get_seed)
   287→} PCG32;
   288→
   289→// Global RNG instance
   290→static PCG32 global_rng = {0x853c49e6748fea9bULL, 0xda3e39cb94b95bdbULL, 0};
   291→
   292→// Seed the PCG32 generator
   293→static void pcg32_seed(PCG32* rng, uint64_t seed) {
   294→    rng->seed = seed;
   295→    rng->state = 0;
   296→    rng->increment = (seed << 1) | 1;  // Increment must be odd
   297→    // Advance state once to mix in the seed
   298→    rng->state = rng->state * 6364136223846793005ULL + rng->increment;
   299→    rng->state += seed;
   300→    rng->state = rng->state * 6364136223846793005ULL + rng->increment;
   301→}
... [17 more lines]

4469:static int l_physics_raycast_all(lua_State* L) {
4956:    lua_register(L, "physics_raycast_all", l_physics_raycast_all);

4505→        b2ShapeId* shape_ud = (b2ShapeId*)lua_newuserdata(L, sizeof(b2ShapeId));
  4506→        *shape_ud = ctx.shapes[i];
  4507→        lua_setfield(L, -2, "shape");
  4508→
  4509→        // point (convert back to pixels)
  4510→        lua_pushnumber(L, ctx.points[i].x * pixels_per_meter);
  4511→        lua_setfield(L, -2, "point_x");
  4512→        lua_pushnumber(L, ctx.points[i].y * pixels_per_meter);
  4513→        lua_setfield(L, -2, "point_y");
  4514→
  4515→        // normal
  4516→        lua_pushnumber(L, ctx.normals[i].x);
  4517→        lua_setfield(L, -2, "normal_x");
  4518→        lua_pushnumber(L, ctx.normals[i].y);
  4519→        lua_setfield(L, -2, "normal_y");
  4520→
  4521→        // fraction
  4522→        lua_pushnumber(L, ctx.fractions[i]);
  4523→        lua_setfield(L, -2, "fraction");
  4524→
  4525→        lua_rawseti(L, -2, i + 1);
  4526→    }
  4527→    return 1;
  4528→}
  4529→
  4530→// Input Lua bindings
  4531→static int l_key_is_down(lua_State* L) {
  4532→    const char* key_name = luaL_checkstring(L, 1);
  4533→    SDL_Scancode scancode = key_name_to_scancode(key_name);
  4534→    if (scancode == SDL_SCANCODE_UNKNOWN) {
... [30 more lines]

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  4521→        // fraction
  4522→        lua_pushnumber(L, ctx.fractions[i]);
  4523→        lua_setfield(L, -2, "fraction");
  4524→
  4525→        lua_rawseti(L, -2, i + 1);
  4526→    }
  4527→    return 1;
  4528→}
  4529→
  4530→// Random Lua bindings
  4531→// random_seed(seed) - Seed the global RNG
  4532→static int l_random_seed(lua_State* L) {
  4533→    lua_Integer seed = luaL_checkinteger(L, 1);
  4534→    pcg32_seed(&global_rng, (uint64_t)seed);
  4535→    return 0;
  4536→}
  4537→
  4538→// random_get_seed() - Get the current seed
  4539→static int l_random_get_seed(lua_State* L) {
  4540→    lua_pushinteger(L, (lua_Integer)global_rng.seed);
  4541→    return 1;
  4542→}
  4543→
  4544→// random_float_01() - Random float [0, 1]
  4545→static int l_random_float_01(lua_State* L) {
  4546→    uint32_t r = pcg32_next(&global_rng);
  4547→    // Divide by (2^32 - 1) for inclusive [0, 1]
  4548→    double result = (double)r / 4294967295.0;
  4549→    lua_pushnumber(L, result);
... [35 more lines]

4970→    lua_register(L, "physics_set_angular_damping", l_physics_set_angular_damping);
  4971→    lua_register(L, "physics_set_gravity_scale", l_physics_set_gravity_scale);
  4972→    lua_register(L, "physics_set_fixed_rotation", l_physics_set_fixed_rotation);
  4973→    lua_register(L, "physics_set_bullet", l_physics_set_bullet);
  4974→    lua_register(L, "physics_set_user_data", l_physics_set_user_data);
  4975→    lua_register(L, "physics_get_user_data", l_physics_get_user_data);
  4976→    // Physics - Shape properties
  4977→    lua_register(L, "physics_shape_set_friction", l_physics_shape_set_friction);
  4978→    lua_register(L, "physics_shape_get_friction", l_physics_shape_get_friction);
  4979→    lua_register(L, "physics_shape_set_restitution", l_physics_shape_set_restitution);
  4980→    lua_register(L, "physics_shape_get_restitution", l_physics_shape_get_restitution);
  4981→    lua_register(L, "physics_shape_is_valid", l_physics_shape_is_valid);
  4982→    lua_register(L, "physics_shape_get_body", l_physics_shape_get_body);
  4983→    lua_register(L, "physics_shape_set_density", l_physics_shape_set_density);
  4984→    lua_register(L, "physics_shape_get_density", l_physics_shape_get_density);
  4985→    // Physics - Additional body queries
  4986→    lua_register(L, "physics_get_body_type", l_physics_get_body_type);
  4987→    lua_register(L, "physics_get_mass", l_physics_get_mass);
  4988→    lua_register(L, "physics_is_awake", l_physics_is_awake);
  4989→    lua_register(L, "physics_set_awake", l_physics_set_awake);
  4990→    // Physics - Event debugging (Step 8)
  4991→    lua_register(L, "physics_debug_events", l_physics_debug_events);
  4992→    // Physics - Event queries (Step 9)
  4993→    lua_register(L, "physics_get_collision_begin", l_physics_get_collision_begin);
  4994→    lua_register(L, "physics_get_collision_end", l_physics_get_collision_end);
  4995→    lua_register(L, "physics_get_hit", l_physics_get_hit);
  4996→    lua_register(L, "physics_get_sensor_begin", l_physics_get_sensor_begin);
  4997→    lua_register(L, "physics_get_sensor_end", l_physics_get_sensor_end);
  4998→    // Physics - Spatial queries (Step 10)
  4999→    lua_register(L, "physics_query_point", l_physics_query_point);
... [20 more lines]

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  5001→    lua_register(L, "physics_query_aabb", l_physics_query_aabb);
  5002→    lua_register(L, "physics_query_box", l_physics_query_box);
  5003→    lua_register(L, "physics_query_capsule", l_physics_query_capsule);
  5004→    lua_register(L, "physics_query_polygon", l_physics_query_polygon);
  5005→    lua_register(L, "physics_raycast", l_physics_raycast);
  5006→    lua_register(L, "physics_raycast_all", l_physics_raycast_all);
  5007→    // Random
  5008→    lua_register(L, "random_seed", l_random_seed);
  5009→    lua_register(L, "random_get_seed", l_random_get_seed);
  5010→    lua_register(L, "random_float_01", l_random_float_01);
  5011→    lua_register(L, "random_float", l_random_float);
  5012→    lua_register(L, "random_int", l_random_int);
  5013→    // Input - Keyboard
  5014→    lua_register(L, "key_is_down", l_key_is_down);
  5015→    lua_register(L, "key_is_pressed", l_key_is_pressed);
  5016→    lua_register(L, "key_is_released", l_key_is_released);
  5017→    // Input - Mouse

anchor.c
src/anchor.c(311): warning C4146: unary minus operator applied to unsigned type, result still unsigned
src/anchor.c(493): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1149): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1143): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
src/anchor.c(1535): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1813): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1819): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1929): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1938): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(2032): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(2034): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(2679): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.
src/anchor.c(3035): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
gl.c
Generating Code...
LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
Build successful: build/anchor.exe

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   307→    rng->state = oldstate * 6364136223846793005ULL + rng->increment;
   308→    // Calculate output function (XSH RR)
   309→    uint32_t xorshifted = (uint32_t)(((oldstate >> 18u) ^ oldstate) >> 27u);
   310→    uint32_t rot = (uint32_t)(oldstate >> 59u);
   311→    return (xorshifted >> rot) | (xorshifted << ((32 - rot) & 31));
   312→}
   313→
   314→// Clear all event buffers (call at start of each physics step)
   315→static void physics_clear_events(void) {

anchor.c
src/anchor.c(493): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1149): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1143): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
src/anchor.c(1535): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1813): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1819): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1929): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1938): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(2032): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(2034): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(2679): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.
src/anchor.c(3035): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
gl.c
Generating Code...
LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
Build successful: build/anchor.exe

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     1→print("main.lua loaded - Phase 8: Random + Physics Test")
     2→
     3→set_shape_filter("rough")
     4→input_bind_all()
     5→
     6→-- Test random determinism: seed and print first 5 values
     7→print("Testing random determinism:")
     8→random_seed(12345)
     9→print(string.format("  Seed 12345 -> float_01: %.6f, %.6f, %.6f",
    10→    random_float_01(), random_float_01(), random_float_01()))
    11→print(string.format("  Seed 12345 -> int(1,10): %d, %d, %d",
    12→    random_int(1, 10), random_int(1, 10), random_int(1, 10)))
    13→
    14→-- Re-seed and verify same sequence
    15→random_seed(12345)
    16→print(string.format("  Re-seed 12345 -> float_01: %.6f, %.6f, %.6f",
    17→    random_float_01(), random_float_01(), random_float_01()))
    18→print(string.format("  Re-seed 12345 -> int(1,10): %d, %d, %d",
    19→    random_int(1, 10), random_int(1, 10), random_int(1, 10)))
    20→
    21→-- Verify get_seed works
    22→random_seed(99999)
    23→print(string.format("  After seed(99999), get_seed() = %d", random_get_seed()))
    24→
    25→-- Set seed for gameplay
    26→random_seed(os.time())
    27→print(string.format("  Gameplay seed: %d", random_get_seed()))
    28→
    29→local screen_w, screen_h = 480, 270
... [2 more lines]

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    96→-- Table to track dynamic bodies and their shapes
    97→local dynamic_bodies = {}
    98→local dynamic_shapes = {}
    99→
   100→-- Helper to get a random ball (using new random_int)
   101→local function get_random_ball()
   102→    if #dynamic_bodies == 0 then return nil end
   103→    return dynamic_bodies[random_int(1, #dynamic_bodies)]
   104→end
   105→
   106→local function draw_objects(layer)
   107→    -- Draw ground (plain rectangle)
   108→    local gx, gy = physics_get_position(ground_body)

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   129→    end
   130→end
   131→
   132→function update(dt)
   133→    -- Create body on Space (using new random_int)
   134→    if is_pressed('space') then
   135→        local x = random_int(50, screen_w - 50)
   136→        local y = 50
   137→        local body = physics_create_body('dynamic', x, y)
   138→        local shape = physics_add_circle(body, 'ball', smile_size / 2)
   139→        physics_shape_set_restitution(shape, 1.0)  -- Bouncy!
   140→        table.insert(dynamic_bodies, body)

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
   149→        physics_destroy_body(body)
   150→        print(string.format("Destroyed body - Remaining: %d", #dynamic_bodies))
   151→    end
   152→
   153→    -- P: Random ball gets random high impulse (using new random_int)
   154→    if is_pressed('p') then
   155→        local ball = get_random_ball()
   156→        if ball then
   157→            local ix = random_int(-25, 25)
   158→            local iy = random_int(-40, -10)
   159→            physics_apply_impulse(ball, ix, iy)
   160→            print(string.format("Applied impulse (%.0f, %.0f) to random ball", ix, iy))
   161→        end
   162→    end
   163→
   164→    -- L: Random ball gets random high angular impulse (using new random_float)
   165→    if is_pressed('l') then
   166→        local ball = get_random_ball()
   167→        if ball then
   168→            local angular = random_float(-1.0, 1.0)
   169→            physics_apply_angular_impulse(ball, angular)
   170→            print(string.format("Applied angular impulse %.2f to random ball", angular))
   171→        end
   172→    end
   173→
   174→    -- K held: Apply wind force (up and right) to all balls
   175→    if is_down('k') then
   176→        for _, body in ipairs(dynamic_bodies) do

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

1326→### Implementation Steps
  1327→
  1328→**Step 1: PCG32 core**
  1329→- [ ] PCG32 state struct (64-bit state, 64-bit increment)
  1330→- [ ] `pcg32_seed(state, seed)` — initialize from seed
  1331→- [ ] `pcg32_next(state)` — generate next uint32
  1332→- [ ] Global RNG instance
  1333→- [ ] Verify determinism (same seed = same sequence)
  1334→
  1335→**Step 2: Basic generation functions**
  1336→- [ ] `random_float_01(rng?)` — float [0, 1]
  1337→- [ ] `random_float(min, max, rng?)` — float [min, max]
  1338→- [ ] `random_int(min, max, rng?)` — int [min, max] inclusive
  1339→- [ ] Lua bindings for above
  1340→
  1341→**Step 3: Seeding and state**
  1342→- [ ] `random_seed(seed, rng?)` — seed the RNG
  1343→- [ ] `random_get_seed(rng?)` — retrieve current seed
  1344→- [ ] `random_create(seed)` — create new RNG instance, returns userdata
  1345→- [ ] Lua bindings for above
  1346→
  1347→**Step 4: Convenience functions**
  1348→- [ ] `random_angle(rng?)` — float [0, 2π]
  1349→- [ ] `random_sign(chance?, rng?)` — -1 or 1 (chance 0-100, default 50)
  1350→- [ ] `random_bool(chance?, rng?)` — bool (chance 0-100, default 50)
  1351→- [ ] Lua bindings for above
  1352→
  1353→**Step 5: Distribution**
  1354→- [ ] `random_normal(mean?, stddev?, rng?)` — Gaussian via Box-Muller transform
  1355→- [ ] Lua binding
... [20 more lines]

The file E:\a327ex\Anchor\docs\ANCHOR_IMPLEMENTATION_PLAN.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1324→---
  1325→
  1326→### Implementation Steps
  1327→
  1328→**Step 1: PCG32 core**
  1329→- [x] PCG32 state struct (64-bit state, 64-bit increment)
  1330→- [x] `pcg32_seed(state, seed)` — initialize from seed
  1331→- [x] `pcg32_next(state)` — generate next uint32
  1332→- [x] Global RNG instance
  1333→- [x] Verify determinism (same seed = same sequence)
  1334→
  1335→**Step 2: Basic generation functions**
  1336→- [x] `random_float_01(rng?)` — float [0, 1]
  1337→- [x] `random_float(min, max, rng?)` — float [min, max]
  1338→- [x] `random_int(min, max, rng?)` — int [min, max] inclusive
  1339→- [x] Lua bindings for above
  1340→
  1341→**Step 3: Seeding and state**
  1342→- [x] `random_seed(seed, rng?)` — seed the RNG
  1343→- [x] `random_get_seed(rng?)` — retrieve current seed
  1344→- [ ] `random_create(seed)` — create new RNG instance, returns userdata
  1345→- [ ] Lua bindings for above
  1346→
  1347→**Step 4: Convenience functions**
  1348→- [ ] `random_angle(rng?)` — float [0, 2π]
  1349→- [ ] `random_sign(chance?, rng?)` — -1 or 1 (chance 0-100, default 50)

4528→}
  4529→
  4530→// Random Lua bindings
  4531→// random_seed(seed) - Seed the global RNG
  4532→static int l_random_seed(lua_State* L) {
  4533→    lua_Integer seed = luaL_checkinteger(L, 1);
  4534→    pcg32_seed(&global_rng, (uint64_t)seed);
  4535→    return 0;
  4536→}
  4537→
  4538→// random_get_seed() - Get the current seed
  4539→static int l_random_get_seed(lua_State* L) {
  4540→    lua_pushinteger(L, (lua_Integer)global_rng.seed);
  4541→    return 1;
  4542→}
  4543→
  4544→// random_float_01() - Random float [0, 1]
  4545→static int l_random_float_01(lua_State* L) {
  4546→    uint32_t r = pcg32_next(&global_rng);
  4547→    // Divide by (2^32 - 1) for inclusive [0, 1]
  4548→    double result = (double)r / 4294967295.0;
  4549→    lua_pushnumber(L, result);
  4550→    return 1;
  4551→}
  4552→
  4553→// random_float(min, max) - Random float [min, max]
  4554→static int l_random_float(lua_State* L) {
  4555→    double min = luaL_checknumber(L, 1);
  4556→    double max = luaL_checknumber(L, 2);
  4557→    uint32_t r = pcg32_next(&global_rng);
... [40 more lines]

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  4526→    }
  4527→    return 1;
  4528→}
  4529→
  4530→// Random Lua bindings
  4531→#define RNG_METATABLE "Anchor.RNG"
  4532→#define PI 3.14159265358979323846
  4533→
  4534→// Helper to get RNG from optional last argument, or global
  4535→static PCG32* get_rng(lua_State* L, int arg) {
  4536→    if (lua_isuserdata(L, arg)) {
  4537→        return (PCG32*)luaL_checkudata(L, arg, RNG_METATABLE);
  4538→    }
  4539→    return &global_rng;
  4540→}
  4541→
  4542→// random_create(seed) - Create new RNG instance
  4543→static int l_random_create(lua_State* L) {
  4544→    lua_Integer seed = luaL_checkinteger(L, 1);
  4545→    PCG32* rng = (PCG32*)lua_newuserdata(L, sizeof(PCG32));
  4546→    pcg32_seed(rng, (uint64_t)seed);
  4547→    luaL_setmetatable(L, RNG_METATABLE);
  4548→    return 1;
  4549→}
  4550→
  4551→// random_seed(seed, rng?) - Seed the RNG
  4552→static int l_random_seed(lua_State* L) {
  4553→    lua_Integer seed = luaL_checkinteger(L, 1);
  4554→    PCG32* rng = get_rng(L, 2);
... [99 more lines]

No matches found

4968:static void register_lua_bindings(lua_State* L) {

4968→static void register_lua_bindings(lua_State* L) {
  4969→    lua_register(L, "layer_create", l_layer_create);
  4970→    lua_register(L, "layer_rectangle", l_layer_rectangle);
  4971→    lua_register(L, "layer_circle", l_layer_circle);
  4972→    lua_register(L, "layer_push", l_layer_push);
  4973→    lua_register(L, "layer_pop", l_layer_pop);
  4974→    lua_register(L, "layer_draw_texture", l_layer_draw_texture);
  4975→    lua_register(L, "layer_set_blend_mode", l_layer_set_blend_mode);
  4976→    lua_register(L, "texture_load", l_texture_load);
  4977→    lua_register(L, "texture_get_width", l_texture_get_width);
  4978→    lua_register(L, "texture_get_height", l_texture_get_height);
  4979→    // Audio
  4980→    lua_register(L, "sound_load", l_sound_load);
  4981→    lua_register(L, "sound_play", l_sound_play);
  4982→    lua_register(L, "sound_set_volume", l_sound_set_volume);
  4983→    lua_register(L, "music_load", l_music_load);
  4984→    lua_register(L, "music_play", l_music_play);
  4985→    lua_register(L, "music_stop", l_music_stop);
  4986→    lua_register(L, "music_set_volume", l_music_set_volume);
  4987→    lua_register(L, "audio_set_master_pitch", l_audio_set_master_pitch);
  4988→    lua_register(L, "rgba", l_rgba);
  4989→    lua_register(L, "set_shape_filter", l_set_shape_filter);
  4990→    lua_register(L, "timing_resync", l_timing_resync);
  4991→    // Effect shaders
  4992→    lua_register(L, "shader_load_file", l_shader_load_file);
  4993→    lua_register(L, "shader_load_string", l_shader_load_string);
  4994→    lua_register(L, "shader_destroy", l_shader_destroy);
  4995→    // Layer shader uniforms (deferred)
  4996→    lua_register(L, "layer_shader_set_float", l_layer_shader_set_float);
  4997→    lua_register(L, "layer_shader_set_vec2", l_layer_shader_set_vec2);

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  4964→    gamepad_deadzone = dz;
  4965→    return 0;
  4966→}
  4967→
  4968→static void register_lua_bindings(lua_State* L) {
  4969→    // Create RNG metatable (for random_create instances)
  4970→    luaL_newmetatable(L, RNG_METATABLE);
  4971→    lua_pop(L, 1);
  4972→
  4973→    lua_register(L, "layer_create", l_layer_create);
  4974→    lua_register(L, "layer_rectangle", l_layer_rectangle);
  4975→    lua_register(L, "layer_circle", l_layer_circle);
  4976→    lua_register(L, "layer_push", l_layer_push);
  4977→    lua_register(L, "layer_pop", l_layer_pop);

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  5078→    lua_register(L, "physics_query_capsule", l_physics_query_capsule);
  5079→    lua_register(L, "physics_query_polygon", l_physics_query_polygon);
  5080→    lua_register(L, "physics_raycast", l_physics_raycast);
  5081→    lua_register(L, "physics_raycast_all", l_physics_raycast_all);
  5082→    // Random
  5083→    lua_register(L, "random_create", l_random_create);
  5084→    lua_register(L, "random_seed", l_random_seed);
  5085→    lua_register(L, "random_get_seed", l_random_get_seed);
  5086→    lua_register(L, "random_float_01", l_random_float_01);
  5087→    lua_register(L, "random_float", l_random_float);
  5088→    lua_register(L, "random_int", l_random_int);
  5089→    lua_register(L, "random_angle", l_random_angle);
  5090→    lua_register(L, "random_sign", l_random_sign);
  5091→    lua_register(L, "random_bool", l_random_bool);
  5092→    // Input - Keyboard
  5093→    lua_register(L, "key_is_down", l_key_is_down);
  5094→    lua_register(L, "key_is_pressed", l_key_is_pressed);
  5095→    lua_register(L, "key_is_released", l_key_is_released);
  5096→    // Input - Mouse

anchor.c
src/anchor.c(493): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1149): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1143): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
src/anchor.c(1535): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1813): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1819): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1929): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1938): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(2032): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(2034): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(2679): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.
src/anchor.c(3035): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
gl.c
Generating Code...
LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
Build successful: build/anchor.exe

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
     2→
     3→set_shape_filter("rough")
     4→input_bind_all()
     5→
     6→-- Test random determinism: seed and print first 5 values
     7→print("Testing random determinism:")
     8→random_seed(12345)
     9→print(string.format("  Seed 12345 -> float_01: %.6f, %.6f, %.6f",
    10→    random_float_01(), random_float_01(), random_float_01()))
    11→print(string.format("  Seed 12345 -> int(1,10): %d, %d, %d",
    12→    random_int(1, 10), random_int(1, 10), random_int(1, 10)))
    13→
    14→-- Re-seed and verify same sequence
    15→random_seed(12345)
    16→print(string.format("  Re-seed 12345 -> float_01: %.6f, %.6f, %.6f",
    17→    random_float_01(), random_float_01(), random_float_01()))
    18→print(string.format("  Re-seed 12345 -> int(1,10): %d, %d, %d",
    19→    random_int(1, 10), random_int(1, 10), random_int(1, 10)))
    20→
    21→-- Verify get_seed works
    22→random_seed(99999)
    23→print(string.format("  After seed(99999), get_seed() = %d", random_get_seed()))
    24→
    25→-- Test convenience functions
    26→print("Testing convenience functions:")
    27→random_seed(12345)
    28→print(string.format("  random_angle(): %.4f, %.4f, %.4f", random_angle(), random_angle(), random_angle()))
    29→print(string.format("  random_sign(): %d, %d, %d, %d, %d", random_sign(), random_sign(), random_sign(), random_sign(), random_sign()))
    30→print(string.format("  random_bool(): %s, %s, %s, %s, %s", tostring(random_bool()), tostring(random_bool()), tostring(random_bool()), tostring(random_bool()), tostring(random_bool())))
... [20 more lines]

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    27→random_seed(12345)
    28→print(string.format("  random_angle(): %.4f, %.4f, %.4f", random_angle(), random_angle(), random_angle()))
    29→print(string.format("  random_sign(): %d, %d, %d, %d, %d", random_sign(), random_sign(), random_sign(), random_sign(), random_sign()))
    30→print(string.format("  random_bool(): %s, %s, %s, %s, %s", tostring(random_bool()), tostring(random_bool()), tostring(random_bool()), tostring(random_bool()), tostring(random_bool())))
    31→local bool80 = {}
    32→for i = 1, 10 do bool80[i] = tostring(random_bool(80)) end
    33→print(string.format("  random_bool(80): %s (80%% chance true)", table.concat(bool80, ", ")))
    34→local sign80 = {}
    35→for i = 1, 10 do sign80[i] = tostring(random_sign(80)) end
    36→print(string.format("  random_sign(80): %s (80%% chance +1)", table.concat(sign80, ", ")))
    37→
    38→-- Test separate RNG instance
    39→print("Testing separate RNG instance:")
    40→local level_rng = random_create(42)

The file E:\a327ex\Anchor\docs\ANCHOR_IMPLEMENTATION_PLAN.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1337→- [x] `random_float(min, max, rng?)` — float [min, max]
  1338→- [x] `random_int(min, max, rng?)` — int [min, max] inclusive
  1339→- [x] Lua bindings for above
  1340→
  1341→**Step 3: Seeding and state**
  1342→- [x] `random_seed(seed, rng?)` — seed the RNG
  1343→- [x] `random_get_seed(rng?)` — retrieve current seed
  1344→- [x] `random_create(seed)` — create new RNG instance, returns userdata
  1345→- [x] Lua bindings for above
  1346→
  1347→**Step 4: Convenience functions**
  1348→- [x] `random_angle(rng?)` — float [0, 2π]
  1349→- [x] `random_sign(chance?, rng?)` — -1 or 1 (chance 0-100, default 50)
  1350→- [x] `random_bool(chance?, rng?)` — bool (chance 0-100, default 50)
  1351→- [x] Lua bindings for above
  1352→
  1353→**Step 5: Distribution**
  1354→- [ ] `random_normal(mean?, stddev?, rng?)` — Gaussian via Box-Muller transform
  1355→- [ ] Lua binding

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  4628→    lua_pushinteger(L, roll < chance ? 1 : -1);
  4629→    return 1;
  4630→}
  4631→
  4632→// random_bool(chance?, rng?) - Returns true or false (chance 0-100, default 50)
  4633→static int l_random_bool(lua_State* L) {
  4634→    double chance = 50.0;
  4635→    PCG32* rng = &global_rng;
  4636→
  4637→    // Parse arguments: chance is optional number, rng is optional userdata
  4638→    if (lua_isnumber(L, 1)) {
  4639→        chance = lua_tonumber(L, 1);
  4640→        rng = get_rng(L, 2);
  4641→    } else if (lua_isuserdata(L, 1)) {
  4642→        rng = get_rng(L, 1);
  4643→    }
  4644→
  4645→    uint32_t r = pcg32_next(rng);
  4646→    double roll = (double)r / 4294967295.0 * 100.0;
  4647→    lua_pushboolean(L, roll < chance);
  4648→    return 1;
  4649→}
  4650→
  4651→// random_normal(mean?, stddev?, rng?) - Gaussian distribution via Box-Muller transform
  4652→static int l_random_normal(lua_State* L) {
  4653→    double mean = 0.0;
  4654→    double stddev = 1.0;
  4655→    PCG32* rng = &global_rng;
  4656→
... [165 more lines]

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  5251→    lua_register(L, "random_get_seed", l_random_get_seed);
  5252→    lua_register(L, "random_float_01", l_random_float_01);
  5253→    lua_register(L, "random_float", l_random_float);
  5254→    lua_register(L, "random_int", l_random_int);
  5255→    lua_register(L, "random_angle", l_random_angle);
  5256→    lua_register(L, "random_sign", l_random_sign);
  5257→    lua_register(L, "random_bool", l_random_bool);
  5258→    lua_register(L, "random_normal", l_random_normal);
  5259→    lua_register(L, "random_choice", l_random_choice);
  5260→    lua_register(L, "random_choices", l_random_choices);
  5261→    lua_register(L, "random_weighted", l_random_weighted);
  5262→    // Input - Keyboard
  5263→    lua_register(L, "key_is_down", l_key_is_down);
  5264→    lua_register(L, "key_is_pressed", l_key_is_pressed);
  5265→    lua_register(L, "key_is_released", l_key_is_released);
  5266→    // Input - Mouse

anchor.c
src/anchor.c(493): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1149): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1143): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
src/anchor.c(1535): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1813): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1819): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1929): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1938): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(2032): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(2034): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(2679): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.
src/anchor.c(3035): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
gl.c
Generating Code...
LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
Build successful: build/anchor.exe

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    44→level_rng = random_create(42)
    45→print(string.format("  level_rng re-seed 42 -> int(1,100): %d, %d, %d (should match)",
    46→    random_int(1, 100, level_rng), random_int(1, 100, level_rng), random_int(1, 100, level_rng)))
    47→
    48→-- Test random_normal (Gaussian distribution)
    49→print("Testing random_normal:")
    50→random_seed(12345)
    51→local normals = {}
    52→for i = 1, 10 do normals[i] = string.format("%.2f", random_normal()) end
    53→print(string.format("  random_normal(): %s", table.concat(normals, ", ")))
    54→local normals2 = {}
    55→for i = 1, 10 do normals2[i] = string.format("%.2f", random_normal(100, 15)) end
    56→print(string.format("  random_normal(100, 15): %s", table.concat(normals2, ", ")))
    57→
    58→-- Test array functions
    59→print("Testing array functions:")
    60→random_seed(12345)
    61→local fruits = {'apple', 'banana', 'cherry', 'date', 'elderberry'}
    62→print(string.format("  random_choice(fruits): %s, %s, %s", random_choice(fruits), random_choice(fruits), random_choice(fruits)))
    63→
    64→local deck = {'A', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K'}
    65→local hand = random_choices(deck, 5)
    66→print(string.format("  random_choices(deck, 5): %s", table.concat(hand, ", ")))
    67→
    68→-- Test weighted selection
    69→print("Testing random_weighted:")
    70→random_seed(12345)
    71→local weights = {70, 25, 5}  -- 70% common, 25% rare, 5% epic
    72→local loot = {'common', 'rare', 'epic'}
... [14 more lines]

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    64→local deck = {'A', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K'}
    65→local hand = random_choices(deck, 5)
    66→print(string.format("  random_choices(deck, 5): %s", table.concat(hand, ", ")))
    67→
    68→-- Test weighted selection (5 runs of 20 picks each)
    69→print("Testing random_weighted (70/25/5 = common/rare/epic):")
    70→random_seed(12345)
    71→local weights = {70, 25, 5}
    72→local loot = {'common', 'rare', 'epic'}
    73→for run = 1, 5 do
    74→    local results = {}
    75→    for i = 1, 20 do
    76→        local idx = random_weighted(weights)
    77→        results[i] = loot[idx]
    78→    end
    79→    print(string.format("  Run %d: %s", run, table.concat(results, ", ")))
    80→end
    81→
    82→-- Set seed for gameplay
    83→random_seed(os.time())
    84→print(string.format("  Gameplay seed: %d", random_get_seed()))

The file E:\a327ex\Anchor\docs\ANCHOR_IMPLEMENTATION_PLAN.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1349→- [x] `random_sign(chance?, rng?)` — -1 or 1 (chance 0-100, default 50)
  1350→- [x] `random_bool(chance?, rng?)` — bool (chance 0-100, default 50)
  1351→- [x] Lua bindings for above
  1352→
  1353→**Step 5: Distribution**
  1354→- [x] `random_normal(mean?, stddev?, rng?)` — Gaussian via Box-Muller transform
  1355→- [x] Lua binding
  1356→
  1357→**Step 6: Array functions**
  1358→- [x] `random_choice(array, rng?)` — pick one element
  1359→- [x] `random_choices(array, n, rng?)` — pick n elements (unique indexes)
  1360→- [x] `random_weighted(weights, rng?)` — returns index based on weights
  1361→- [x] Lua bindings for above
  1362→
  1363→**Step 7: Perlin noise**
  1364→- [ ] Integrate stb_perlin.h
  1365→- [ ] `noise(x, y?, z?)` — Perlin noise [-1, 1]

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

E:\a327ex\Anchor\engine\include\stb\stb_image.h
E:\a327ex\Anchor\engine\include\stb\stb_truetype.h

# stb_perlin.h Summary

This is a public domain single-file C implementation of Perlin noise by Sean Barrett (v0.5). Here are the key components:

## Main Functions

The library provides several noise generation functions:

- **`stb_perlin_noise3()`** - Generates 3D Perlin noise at coordinates (x,y,z) with optional power-of-two wrapping parameters
- **`stb_perlin_noise3_seed()`** - Same as above but with a seed parameter for variations
- **`stb_perlin_noise3_wrap_nonpow2()`** - Supports non-power-of-two wrapping

## Fractal Noise Functions

Three fractal variants are included:

- Ridge noise
- Fractional Brownian Motion (FBM)
- Turbulence noise

These accept parameters like lacunarity (~2.0), gain (0.5), and octaves (6).

## Implementation Details

The code uses:

- Permutation tables (`stb__perlin_randtab`) duplicated to avoid extra masking
- Gradient index tables for bias reduction
- Ease function: `(((a*6-15)*a + 10) * a * a * a)`
- Linear interpolation between noise values

## Licensing
... [2 more lines]

// stb_perlin.h - v0.5 - perlin noise
// public domain single-file C implementation by Sean Barrett
//
// LICENSE
//
//   See end of file.
//
//
// to create the implementation,
//     #define STB_PERLIN_IMPLEMENTATION
// in *one* C/CPP file that includes this file.
//
//
// Documentation:
//
// float  stb_perlin_noise3( float x,
//                           float y,
//                           float z,
//                           int   x_wrap=0,
//                           int   y_wrap=0,
//                           int   z_wrap=0)
//
// This function computes a random value at the coordinate (x,y,z).
// Adjacent random values are continuous but the noise fluctuates
// its randomness with period 1, i.e. takes on wholly unrelated values
// at integer points. Specifically, this implements Ken Perlin's
// revised noise function from 2002.
//
// The "wrap" parameters can be used to create wraparound noise that
// wraps at powers of two. The numbers MUST be powers of two. Specify
... [20 more lines]

30→#include <lua.h>
    31→#include <lualib.h>
    32→#include <lauxlib.h>
    33→
    34→#define STB_IMAGE_IMPLEMENTATION
    35→#include <stb_image.h>
    36→
    37→#define STB_VORBIS_HEADER_ONLY
    38→#include <stb_vorbis.c>
    39→
    40→#define MA_ENABLE_VORBIS
    41→#define MINIAUDIO_IMPLEMENTATION
    42→#include <miniaudio.h>
    43→
    44→#include <box2d.h>
    45→
    46→#define WINDOW_TITLE "Anchor"
    47→#define GAME_WIDTH 480
    48→#define GAME_HEIGHT 270
    49→#define INITIAL_SCALE 3

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    30→#include <lua.h>
    31→#include <lualib.h>
    32→#include <lauxlib.h>
    33→
    34→#define STB_IMAGE_IMPLEMENTATION
    35→#include <stb_image.h>
    36→
    37→#define STB_PERLIN_IMPLEMENTATION
    38→#include <stb_perlin.h>
    39→
    40→#define STB_VORBIS_HEADER_ONLY
    41→#include <stb_vorbis.c>
    42→
    43→#define MA_ENABLE_VORBIS
    44→#define MINIAUDIO_IMPLEMENTATION

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  4811→            return 1;
  4812→        }
  4813→    }
  4814→
  4815→    // Fallback to last index (handles floating point edge cases)
  4816→    lua_pushinteger(L, len);
  4817→    return 1;
  4818→}
  4819→
  4820→// noise(x, y?, z?) - Perlin noise [-1, 1]
  4821→static int l_noise(lua_State* L) {
  4822→    float x = (float)luaL_checknumber(L, 1);
  4823→    float y = (float)luaL_optnumber(L, 2, 0.0);
  4824→    float z = (float)luaL_optnumber(L, 3, 0.0);
  4825→
  4826→    // stb_perlin_noise3 returns [-1, 1]
  4827→    float result = stb_perlin_noise3(x, y, z, 0, 0, 0);
  4828→    lua_pushnumber(L, result);
  4829→    return 1;
  4830→}
  4831→
  4832→// Input Lua bindings
  4833→static int l_key_is_down(lua_State* L) {
  4834→    const char* key_name = luaL_checkstring(L, 1);
  4835→    SDL_Scancode scancode = key_name_to_scancode(key_name);
  4836→    if (scancode == SDL_SCANCODE_UNKNOWN) {

The file E:\a327ex\Anchor\engine\src\anchor.c has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  5271→    lua_register(L, "random_sign", l_random_sign);
  5272→    lua_register(L, "random_bool", l_random_bool);
  5273→    lua_register(L, "random_normal", l_random_normal);
  5274→    lua_register(L, "random_choice", l_random_choice);
  5275→    lua_register(L, "random_choices", l_random_choices);
  5276→    lua_register(L, "random_weighted", l_random_weighted);
  5277→    lua_register(L, "noise", l_noise);
  5278→    // Input - Keyboard
  5279→    lua_register(L, "key_is_down", l_key_is_down);
  5280→    lua_register(L, "key_is_pressed", l_key_is_pressed);
  5281→    lua_register(L, "key_is_released", l_key_is_released);
  5282→    // Input - Mouse

anchor.c
src/anchor.c(496): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1152): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1146): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
src/anchor.c(1538): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1816): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1822): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1932): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(1941): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(2035): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(2037): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
src/anchor.c(2682): warning C4996: 'strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. See online help for details.
src/anchor.c(3038): warning C4996: 'strncpy': This function or variable may be unsafe. Consider using strncpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
gl.c
Generating Code...
LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
Build successful: build/anchor.exe

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    78→    end
    79→    print(string.format("  Run %d: %s", run, table.concat(results, ", ")))
    80→end
    81→
    82→-- Test Perlin noise
    83→print("Testing noise (Perlin):")
    84→local noise_vals = {}
    85→for i = 0, 9 do
    86→    noise_vals[i+1] = string.format("%.3f", noise(i * 0.1))
    87→end
    88→print(string.format("  noise(0..0.9 step 0.1): %s", table.concat(noise_vals, ", ")))
    89→
    90→-- 2D noise
    91→local noise_2d = {}
    92→for i = 0, 4 do
    93→    noise_2d[i+1] = string.format("%.3f", noise(i * 0.5, 0.5))
    94→end
    95→print(string.format("  noise(x, 0.5) x=0..2: %s", table.concat(noise_2d, ", ")))
    96→
    97→-- Verify noise is deterministic (same input = same output)
    98→print(string.format("  noise(1.5, 2.5, 3.5) = %.6f (should be constant)", noise(1.5, 2.5, 3.5)))
    99→print(string.format("  noise(1.5, 2.5, 3.5) = %.6f (should match above)", noise(1.5, 2.5, 3.5)))
   100→
   101→-- Set seed for gameplay
   102→random_seed(os.time())
   103→print(string.format("  Gameplay seed: %d", random_get_seed()))
   104→
   105→local screen_w, screen_h = 480, 270
   106→
... [1 more lines]

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    86→    noise_vals[i+1] = string.format("%.3f", noise(i * 0.1))
    87→end
    88→print(string.format("  noise(0..0.9 step 0.1): %s", table.concat(noise_vals, ", ")))
    89→
    90→-- 2D noise - show a 5x5 grid
    91→print("  2D noise grid (5x5, scale 0.5):")
    92→for y = 0, 4 do
    93→    local row = {}
    94→    for x = 0, 4 do
    95→        row[x+1] = string.format("%+.2f", noise(x * 0.5, y * 0.5))
    96→    end
    97→    print(string.format("    y=%d: %s", y, table.concat(row, " ")))
    98→end
    99→
   100→-- Verify noise is deterministic (same input = same output)
   101→print(string.format("  noise(1.5, 2.5, 3.5) = %.6f (should be constant)", noise(1.5, 2.5, 3.5)))
   102→print(string.format("  noise(1.5, 2.5, 3.5) = %.6f (should match above)", noise(1.5, 2.5, 3.5)))

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    86→    noise_vals[i+1] = string.format("%.3f", noise(i * 0.1))
    87→end
    88→print(string.format("  noise(0..0.9 step 0.1): %s", table.concat(noise_vals, ", ")))
    89→
    90→-- 2D noise - show a 5x5 grid (scale 0.3 to avoid integer coordinates)
    91→print("  2D noise grid (5x5, scale 0.3):")
    92→for y = 0, 4 do
    93→    local row = {}
    94→    for x = 0, 4 do
    95→        row[x+1] = string.format("%+.2f", noise(x * 0.3 + 0.1, y * 0.3 + 0.1))
    96→    end
    97→    print(string.format("    y=%d: %s", y, table.concat(row, " ")))
    98→end
    99→
   100→-- Verify noise is deterministic (same input = same output)
   101→print(string.format("  noise(1.5, 2.5, 3.5) = %.6f (should be constant)", noise(1.5, 2.5, 3.5)))
   102→print(string.format("  noise(1.5, 2.5, 3.5) = %.6f (should match above)", noise(1.5, 2.5, 3.5)))

The file E:\a327ex\Anchor\test\main.lua has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
    86→    noise_vals[i+1] = string.format("%.3f", noise(i * 0.1))
    87→end
    88→print(string.format("  noise(0..0.9 step 0.1): %s", table.concat(noise_vals, ", ")))
    89→
    90→-- 2D noise - show a 8x8 grid (small scale 0.1 to show smoothness)
    91→print("  2D noise grid (8x8, scale 0.1):")
    92→for y = 0, 7 do
    93→    local row = {}
    94→    for x = 0, 7 do
    95→        row[x+1] = string.format("%+.2f", noise(x * 0.1 + 0.05, y * 0.1 + 0.05))
    96→    end
    97→    print(string.format("    %s", table.concat(row, " ")))
    98→end
    99→
   100→-- Verify noise is deterministic (same input = same output)
   101→print(string.format("  noise(1.5, 2.5, 3.5) = %.6f (should be constant)", noise(1.5, 2.5, 3.5)))
   102→print(string.format("  noise(1.5, 2.5, 3.5) = %.6f (should match above)", noise(1.5, 2.5, 3.5)))

The file E:\a327ex\Anchor\docs\ANCHOR_IMPLEMENTATION_PLAN.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1359→- [x] `random_choices(array, n, rng?)` — pick n elements (unique indexes)
  1360→- [x] `random_weighted(weights, rng?)` — returns index based on weights
  1361→- [x] Lua bindings for above
  1362→
  1363→**Step 7: Perlin noise**
  1364→- [x] Integrate stb_perlin.h
  1365→- [x] `noise(x, y?, z?)` — Perlin noise [-1, 1]
  1366→- [x] Lua binding (1D, 2D, 3D variants)
  1367→
  1368→---
  1369→
  1370→### Lua API

1540→#### Noise for Terrain/Effects
  1541→
  1542→```lua
  1543→-- Terrain height
  1544→for x = 0, 480 do
  1545→    local height = noise(x * 0.02) * 50 + 100  -- Scale and offset
  1546→    draw_ground(x, height)
  1547→end
  1548→
  1549→-- 2D cloud density
  1550→for x = 0, 480 do
  1551→    for y = 0, 270 do
  1552→        local density = noise(x * 0.01, y * 0.01)
  1553→        if density > 0.3 then
  1554→            draw_cloud_pixel(x, y, density)
  1555→        end
  1556→    end
  1557→end
  1558→
  1559→-- Animated noise (use z as time)
  1560→local wobble = noise(enemy.x * 0.1, enemy.y * 0.1, time * 0.5)
  1561→enemy.visual_x = enemy.x + wobble * 5
  1562→```
  1563→
  1564→---
  1565→
  1566→### Verification
  1567→
  1568→- [ ] Step 1: Same seed produces identical sequence across runs
  1569→- [ ] Step 2: `random_float` and `random_int` produce values in correct ranges
... [20 more lines]

The file E:\a327ex\Anchor\docs\ANCHOR_IMPLEMENTATION_PLAN.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1536→-- Main game RNG unaffected
  1537→local particle_angle = random_angle()  -- Uses global RNG
  1538→```
  1539→
  1540→#### Noise for Terrain/Effects
  1541→
  1542→```lua
  1543→-- IMPORTANT: Noise scaling
  1544→-- Perlin noise returns 0 at integer coordinates by design.
  1545→-- The scale factor controls "zoom level":
  1546→--   Small scale (0.01-0.05): Smooth, gradual changes (clouds, terrain)
  1547→--   Medium scale (0.1-0.2): Moderate variation (texture detail)
  1548→--   Large scale (0.5+): Rapid changes, more random-looking
  1549→-- Adjacent samples should differ by small amounts for smooth results.
  1550→
  1551→-- Terrain height (scale 0.02 = gradual hills)
  1552→for x = 0, 480 do
  1553→    local height = noise(x * 0.02) * 50 + 100  -- Scale and offset
  1554→    draw_ground(x, height)
  1555→end
  1556→
  1557→-- 2D cloud density (scale 0.01 = large smooth clouds)
  1558→for x = 0, 480 do
  1559→    for y = 0, 270 do
  1560→        local density = noise(x * 0.01, y * 0.01)
  1561→        if density > 0.3 then
  1562→            draw_cloud_pixel(x, y, density)
  1563→        end
  1564→    end
... [25 more lines]

Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

E:\a327ex\Anchor\engine\run-web.bat
E:\a327ex\Anchor\engine\build-web.sh

Exit code 1
Usage: ./build-web.sh <game-folder>
Example: ./build-web.sh ../test

Building with game folder: ../test
In file included from src/anchor.c:6291:
include\stb_vorbis.c:1404:75: warning: pointer comparison always evaluates to false [-Wtautological-compare]
 1404 |       if (f->stream_start + loc >= f->stream_end || f->stream_start + loc < f->stream_start) {
      |                                                                           ^
1 warning generated.
Build successful: build-web/anchor.html
To test: cd build-web && python -m http.server 8000
Then open: http://localhost:8000/anchor.html

The file E:\a327ex\Anchor\docs\ANCHOR_IMPLEMENTATION_PLAN.md has been updated. Here's the result of running `cat -n` on a snippet of the edited file:
  1578→- [x] Step 3: `random_create` produces independent RNG instances
  1579→- [x] Step 4: `random_sign` and `random_bool` respect chance parameter
  1580→- [x] Step 5: `random_normal` produces bell curve distribution
  1581→- [x] Step 6: `random_weighted` respects weight ratios
  1582→- [x] Step 7: `noise` produces smooth, continuous values
  1583→- [x] All steps verified on Windows and Web
  1584→
  1585→**Deliverable:** Deterministic random with replay support and Perlin noise. ✓ Complete
  1586→
  1587→---
  1588→
  1589→## Phase 9: Text Rendering

1→# Session Workflow
     2→
     3→When the user asks to end the session, follow this workflow. Complete all steps before committing (one commit per session).
     4→
     5→See the Commands section in `.claude/CLAUDE.md` for quick reference.
     6→
     7→---
     8→
     9→## End of Session Steps
    10→
    11→1. **Locate the session transcript** — find the most recent JSONL file
    12→2. **Convert to Markdown** — use a lowercase, hyphenated title slug (e.g., `engine-phase-1.md`). Date-based filenames don't work with Blot.
    13→3. **Read the converted log** to review the full session, especially if compacted. Summary must cover everything.
    14→4. **Write a detailed summary:**
    15→   - Chronological order (matching conversation flow)
    16→   - Weight to one-off fixes, attempts, problems solved
    17→   - Specific details: error messages, what was tried, what worked
    18→5. **Create a short title** (max 30 characters)
    19→6. **Show title + summary to user** — wait for approval before proceeding
    20→7. **Prepend title + summary** to the log file (replace default header)
    21→8. **Sync context files**
    22→9. **Commit** with title as subject, full summary as body:
    23→
    24→   **CRITICAL:** Copy summary text directly from the log file. Do not retype. The commit body must be character-for-character identical to the log file.
    25→
    26→   ```bash
    27→   git commit -m "Title
    28→
    29→   [COPY-PASTE exact summary from log file]
    30→
... [89 more lines]

/c/Users/adn/.claude/projects/E--a327ex-Anchor/385d7c23-2fdb-4bbf-9d37-ad95ae905271.jsonl