private unsafe void LoadLayerRle(Mcly layerInfo, int layer)
{
var ptr = mAlphaDataCompressed.ToPointer();
var counterOut = 0;
var startPos = layerInfo.OfsMcal;
while (counterOut < 4096)
{
var indicator = ((byte *)ptr)[startPos++];
if ((indicator & 0x80) != 0)
{
var value = ((byte *)ptr)[startPos++];
var repeat = indicator & 0x7F;
for (var k = 0; k < repeat && counterOut < 4096; ++k)
{
AlphaValues[counterOut++] |= (uint)value << (layer * 8);
}
}
else
{
for (var k = 0; k < (indicator & 0x7F) && counterOut < 4096; ++k)
{
AlphaValues[counterOut++] |= (uint)((byte *)ptr)[startPos++] << (8 * layer);
}
}
}
}
private unsafe void LoadUncompressed(Mcly layerInfo, int layer)
{
var ptr = mAlphaDataCompressed.ToPointer();
var startPos = layerInfo.OfsMcal;
for (var i = 0; i < 4096; ++i)
{
AlphaValues[i] |= (uint)((byte *)ptr)[startPos++] << (8 * layer);
}
}
protected override int AddTextureLayer(string textureName)
{
var old = TextureNames;
TextureNames = new string[TextureNames.Count + 1];
for (var i = 0; i < old.Count; ++i)
{
TextureNames[i] = old[i];
}
TextureNames[TextureNames.Count - 1] = textureName;
MapArea parent;
if (mParent.TryGetTarget(out parent) == false)
{
throw new InvalidOperationException("Couldnt get parent of map chunk");
}
var texId = parent.GetOrAddTexture(textureName);
var layer = new Mcly
{
Flags = 0,
TextureId = texId,
EffectId = -1,
OfsMcal = 0,
Padding = 0
};
var layers = mLayers;
mLayers = new Mcly[layers.Length + 1];
for (var i = 0; i < layers.Length; ++i)
{
mLayers[i] = layers[i];
}
mLayers[layers.Length] = layer;
Textures.Add(parent.GetTexture(texId));
SpecularTextures.Add(parent.GetSpecularTexture(texId));
SpecularFactors[SpecularTextures.Count - 1] = parent.IsSpecularTextureLoaded(texId) ? 1 : 0;
TexturesChanged = true;
return(mLayers.Length - 1);
}
private unsafe void LoadLayerCompressed(Mcly layerInfo, int layer)
{
var ptr = mAlphaDataCompressed.ToPointer();
var startPos = layerInfo.OfsMcal;
var counter = 0;
for (var k = 0; k < 64; ++k)
{
for (var j = 0; j < 32; ++j)
{
var alpha = ((byte *)ptr)[startPos++];
var val1 = alpha & 0xF;
var val2 = alpha >> 4;
val2 = j == 31 ? val1 : val2;
val1 = (byte)((val1 / 15.0f) * 255.0f);
val2 = (byte)((val2 / 15.0f) * 255.0f);
AlphaValues[counter++] |= (uint)val1 << (8 * layer);
AlphaValues[counter++] |= (uint)val2 << (8 * layer);
}
}
}
