public I76Sprite GetSprite(string mapName, string spriteName, int xOffset = 0, int yOffset = 0, bool addToCache = true)
{
if (addToCache && _sprites.TryGetValue(spriteName, out I76Sprite sprite))
{
return(sprite);
}
if (!TryGetMapTexture(mapName, out Texture2D mapTexture, out ETbl etbl))
{
return(null);
}
if (etbl.IsReferenceImage)
{
Debug.LogErrorFormat("Map '{0}' is a reference image, not a sprite sheet.", mapName);
return(null);
}
if (!etbl.Items.TryGetValue(spriteName, out ETbl.ETblItem item))
{
Debug.LogErrorFormat("Sprite '{0}' does not exist in map '{1}'.", spriteName, mapName);
return(null);
}
int textureWidth = mapTexture.width;
int itemWidth = item.Width;
int mapYOffset = Mathf.Clamp(mapTexture.height - item.Height - item.YOffset - item.Height * yOffset + 1, 0, mapTexture.height - item.Height);
Color32[] texturePixels = mapTexture.GetPixels32(0);
Color32[] pixels = new Color32[item.Width * item.Height];
int xStart = item.XOffset + item.Width * xOffset;
int yStart = mapYOffset;
int xEnd = xStart + item.Width;
int yEnd = yStart + item.Height;
for (int x = xStart; x < xEnd; ++x)
{
for (int y = yStart; y < yEnd; ++y)
{
pixels[(y - yStart) * itemWidth + x - xStart] = texturePixels[y * textureWidth + x];
}
}
sprite = new I76Sprite
{
Name = spriteName,
Pixels = pixels,
Width = item.Width,
Height = item.Height
};
if (addToCache)
{
_sprites.Add(spriteName, sprite);
}
return(sprite);
}
public void ApplySprite(string referenceId, I76Sprite sprite, bool uploadToGpu, bool alphaBlend = false)
{
if (sprite == null)
{
return;
}
Vector2Int referencePos = Vector2Int.zero;
if (referenceId != null)
{
if (!_referencePositions.TryGetValue(referenceId, out referencePos))
{
Debug.LogErrorFormat("Reference ID '{0}' does not exist for reference image '{1}'.", referenceId, Name);
return;
}
}
int xOffset = referencePos.x;
int yOffset = Mathf.Max(0, MainTexture.height - referencePos.y - sprite.Height - 1);
Color32[] pixels = sprite.Pixels;
if (alphaBlend)
{
Color[] existingPixels = MainTexture.GetPixels(xOffset, yOffset, sprite.Width, sprite.Height);
int pixelCount = existingPixels.Length;
for (int i = 0; i < pixelCount; ++i)
{
pixels[i] = Color32.Lerp(existingPixels[i], pixels[i], pixels[i].a);
}
}
MainTexture.SetPixels32(xOffset, yOffset, sprite.Width, sprite.Height, pixels, 0);
if (uploadToGpu)
{
MainTexture.Apply();
}
}