/// <summary>
/// Reads a DGRPSprite from a stream.
/// </summary>
/// <param name="iff">An Iff instance.</param>
/// <param name="stream">A Stream object holding a DGRPSprite.</param>
public void Read(uint version, IoBuffer io)
{
if (version < 20003)
{
//Unknown ignored "Type" field
var type = io.ReadUInt16();
SpriteID = io.ReadUInt16();
SpriteFrameIndex = io.ReadUInt16();
var flagsRaw = io.ReadUInt16();
Flags = (DGRPSpriteFlags)flagsRaw;
SpriteOffset.X = io.ReadInt16();
SpriteOffset.Y = io.ReadInt16();
if (version == 20001)
{
ObjectOffset.Z = io.ReadFloat();
}
}
else
{
SpriteID = io.ReadUInt32();
SpriteFrameIndex = io.ReadUInt32();
SpriteOffset.X = io.ReadInt32();
SpriteOffset.Y = io.ReadInt32();
ObjectOffset.Z = io.ReadFloat();
Flags = (DGRPSpriteFlags)io.ReadUInt32();
if (version == 20004)
{
ObjectOffset.X = io.ReadFloat();
ObjectOffset.Y = io.ReadFloat();
}
}
}
/// <summary>
/// Reads a DGRPImage from a stream.
/// </summary>
/// <param name="iff">An Iff instance.</param>
/// <param name="stream">A Stream object holding a DGRPImage.</param>
public void Read(uint version, IoBuffer io)
{
uint spriteCount = 0;
if (version < 20003){
spriteCount = io.ReadUInt16();
Direction = io.ReadByte();
Zoom = io.ReadByte();
}else{
Direction = io.ReadUInt32();
Zoom = io.ReadUInt32();
spriteCount = io.ReadUInt32();
}
this.Sprites = new DGRPSprite[spriteCount];
for (var i = 0; i < spriteCount; i++){
var sprite = new DGRPSprite(Parent);
sprite.Read(version, io);
this.Sprites[i] = sprite;
}
}
/// <summary>
/// Decodes this SPR2Frame.
/// </summary>
/// <param name="io">An IOBuffer instance used to read a SPR2Frame.</param>
private void Decode(IoBuffer io)
{
var y = 0;
var endmarker = false;
var hasPixels = (this.Flags & 0x01) == 0x01;
var hasZBuffer = (this.Flags & 0x02) == 0x02;
var hasAlpha = (this.Flags & 0x04) == 0x04;
var numPixels = this.Width * this.Height;
if (hasPixels){
this.PixelData = new Color[numPixels];
}
if (hasZBuffer){
this.ZBufferData = new byte[numPixels];
}
if (hasAlpha){
this.AlphaData = new byte[numPixels];
}
var palette = Parent.ChunkParent.Get<PALT>(this.PaletteID);
var transparentPixel = palette.Colors[TransparentColorIndex];
while (!endmarker)
{
var marker = io.ReadUInt16();
var command = marker >> 13;
var count = marker & 0x1FFF;
switch (command)
{
/** Fill with pixel data **/
case 0x00:
var bytes = count;
bytes -= 2;
var x = 0;
while (bytes > 0)
{
var pxMarker = io.ReadUInt16();
var pxCommand = pxMarker >> 13;
var pxCount = pxMarker & 0x1FFF;
bytes -= 2;
switch (pxCommand)
{
case 0x01:
case 0x02:
var pxWithAlpha = pxCommand == 0x02;
for (var col = 0; col < pxCount; col++)
{
var zValue = io.ReadByte();
var pxValue = io.ReadByte();
bytes -= 2;
var pxColor = palette.Colors[pxValue];
if (pxWithAlpha)
{
pxColor.A = (byte)(io.ReadByte() * 8.2258064516129032258064516129032);
bytes--;
}
else
{
if (pxColor.PackedValue == transparentPixel.PackedValue)
{
pxColor.A = 0;
}
}
var offset = (y * Width) + x;
this.PixelData[offset] = pxColor;
this.ZBufferData[offset] = zValue;
x++;
}
if (pxWithAlpha)
{
/** Padding? **/
if ((pxCount * 3) % 2 != 0){
bytes--;
io.ReadByte();
}
}
break;
case 0x03:
for (var col = 0; col < pxCount; col++)
{
var offset = (y * Width) + x;
this.PixelData[offset] = transparentPixel;
this.PixelData[offset].A = 0;
if (hasZBuffer){
this.ZBufferData[offset] = 255;
}
x++;
}
break;
case 0x06:
for (var col = 0; col < pxCount; col++)
{
var pxIndex = io.ReadByte();
bytes--;
var offset = (y * Width) + x;
var pxColor = palette.Colors[pxIndex];
byte z = 0;
if (pxColor.PackedValue == transparentPixel.PackedValue)
{
pxColor.A = 0;
z = 255;
}
this.PixelData[offset] = pxColor;
if (hasZBuffer)
{
this.ZBufferData[offset] = z;
}
x++;
}
if (pxCount % 2 != 0)
{
bytes--;
io.ReadByte();
}
break;
}
}
/** If row isnt filled in, the rest is transparent **/
while (x < Width)
{
var offset = (y * Width) + x;
if (hasZBuffer)
{
this.ZBufferData[offset] = 255;
}
x++;
}
break;
/** Leave the next count rows in the color channel filled with the transparent color,
* in the z-buffer channel filled with 255, and in the alpha channel filled with 0. **/
case 0x04:
for (var row = 0; row < count; row++)
{
for (var col = 0; col < Width; col++)
{
var offset = ((y+row) * Width) + col;
if (hasPixels)
{
this.PixelData[offset] = transparentPixel;
}
if (hasAlpha)
{
this.PixelData[offset].A = 0;
}
if (hasZBuffer)
{
ZBufferData[offset] = 255;
}
}
}
y += count - 1;
break;
case 0x05:
endmarker = true;
break;
}
y++;
}
}
/// <summary>
/// Reads a BMP chunk from a stream.
/// </summary>
/// <param name="version">Version of the SPR2 that this frame belongs to.</param>
/// <param name="stream">A IOBuffer object used to read a SPR2 chunk.</param>
public void Read(uint version, IoBuffer io)
{
if (version == 1001)
{
var spriteVersion = io.ReadUInt32();
var spriteSize = io.ReadUInt32();
}
this.Width = io.ReadUInt16();
this.Height = io.ReadUInt16();
this.Flags = io.ReadUInt32();
io.ReadUInt16();
if (this.PaletteID == 0 || this.PaletteID == 0xA3A3)
{
this.PaletteID = (ushort)Parent.DefaultPaletteID;
}
TransparentColorIndex = io.ReadUInt16();
var y = io.ReadInt16();
var x = io.ReadInt16();
this.Position = new Vector2(x, y);
this.Decode(io);
}
/// <summary>
/// Reads a SPRFrame from a stream.
/// </summary>
/// <param name="iff">An Iff instance.</param>
/// <param name="stream">A Stream object holding a SPRFrame.</param>
public void Read(uint version, IoBuffer io)
{
if (version == 1001)
{
var spriteFersion = io.ReadUInt32();
var size = io.ReadUInt32();
this.Version = spriteFersion;
}
else
{
this.Version = version;
}
var reserved = io.ReadUInt32();
var height = io.ReadUInt16();
var width = io.ReadUInt16();
this.Init(width, height);
this.Decode(io);
}
public void ReadDeferred(uint version, IoBuffer io)
{
var reserved = io.ReadUInt32();
var height = io.ReadUInt16();
var width = io.ReadUInt16();
this.Init(width, height);
this.Decode(io);
}