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feat: Phase 19-C/D - sprite loading, transparency, and animation

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- Add runtime sprite loading from Characters.png and Environment.png
- Implement ProcessTransparency for chroma-key white background removal
- Add AgentAnimator for procedural idle/movement animations
- Add Billboard component support for 2.5D perspective
- Normalize sprite scales based on world units
- Fix SetMovement parameter mismatch

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
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2026-01-02 00:23:13 +08:00
parent 01abd3c2dc
commit 0187c5ecbe
4 changed files with 246 additions and 46 deletions
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62
unity-client/Assets/Scripts/Visual/EnvironmentManager.cs
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@@ -437,8 +437,17 @@ namespace TheIsland.Visual
var trunkRenderer = trunkSprite.AddComponent<SpriteRenderer>();
trunkRenderer.sprite = CreateTreeSprite();
trunkRenderer.sortingOrder = -20;
// Phase 19-B: Uniform scale to avoid distortion
trunkSprite.transform.localScale = new Vector3(scale, scale, 1);
// Phase 19-C: Add Billboard for 2.5D perspective
trunkSprite.AddComponent<Billboard>();
// Phase 19-C: Normalize scale based on world units.
// If the sprite is large, we want it to fit the intended 'scale' height.
// A typical tree sprite at 100 PPU might be 10 units high.
// We want it to be 'scale' units high (e.g. 3 units).
float spriteHeightUnits = trunkRenderer.sprite.rect.height / trunkRenderer.sprite.pixelsPerUnit;
float normScale = scale / spriteHeightUnits;
trunkSprite.transform.localScale = new Vector3(normScale, normScale, 1);
}
private Texture2D _envTexture;
@@ -449,33 +458,39 @@ namespace TheIsland.Visual
if (System.IO.File.Exists(path))
{
byte[] data = System.IO.File.ReadAllBytes(path);
_envTexture = new Texture2D(2, 2);
_envTexture.LoadImage(data);
Texture2D sourceTex = new Texture2D(2, 2);
sourceTex.LoadImage(data);
// Phase 19-B: Fix white background transparency
ProcessTransparency(_envTexture);
// Phase 19-C: Robust transparency transcoding
_envTexture = ProcessTransparency(sourceTex);
}
}
private void ProcessTransparency(Texture2D tex)
private Texture2D ProcessTransparency(Texture2D source)
{
if (tex == null) return;
Color[] pixels = tex.GetPixels();
bool changed = false;
if (source == null) return null;
// Create a new texture with Alpha channel
Texture2D tex = new Texture2D(source.width, source.height, TextureFormat.RGBA32, false);
Color[] pixels = source.GetPixels();
for (int i = 0; i < pixels.Length; i++)
{
// If the pixel is very close to white, make it transparent
if (pixels[i].r > 0.92f && pixels[i].g > 0.92f && pixels[i].b > 0.92f)
Color p = pixels[i];
// Chroma-key: If pixel is very close to white, make it transparent
if (p.r > 0.9f && p.g > 0.9f && p.b > 0.9f)
{
pixels[i] = Color.clear;
changed = true;
pixels[i] = new Color(0, 0, 0, 0);
}
else
{
pixels[i] = new Color(p.r, p.g, p.b, 1.0f);
}
}
if (changed)
{
tex.SetPixels(pixels);
tex.Apply();
}
tex.SetPixels(pixels);
tex.Apply();
return tex;
}
private Sprite CreateTreeSprite()
@@ -606,7 +621,14 @@ namespace TheIsland.Visual
var rockRenderer = rockObj.AddComponent<SpriteRenderer>();
rockRenderer.sprite = CreateRockSprite();
rockRenderer.sortingOrder = -15;
rockObj.transform.localScale = Vector3.one * scale;
// Phase 19-C: Add Billboard
rockObj.AddComponent<Billboard>();
// Phase 19-C: Normalize scale
float spriteWidthUnits = rockRenderer.sprite.rect.width / rockRenderer.sprite.pixelsPerUnit;
float normScale = scale / spriteWidthUnits;
rockObj.transform.localScale = Vector3.one * normScale;
}
private Sprite CreateRockSprite()