private unsafe void BuildTiles16Gfx(IntPtr allgfx8Ptr, IntPtr allgfx16Ptr)
{
var gfx16Data = (byte *)allgfx16Ptr.ToPointer();
var gfx8Data = (byte *)allgfx8Ptr.ToPointer();
int[] offsets = { 0, 8, 1024, 1032 };
var yy = 0;
var xx = 0;
//TODO : Get rid of that magic number
//I think that number doesn't actually appear anywhere
//tiles must stay below that number that's it, if it goes over it will use junk data
for (var i = 0; i < 3748; i++) //number of tiles16
{
//8x8 tile draw
//gfx8 = 4bpp so everyting is /2
var tiles = TilesLoader.tiles16[i];
for (var tile = 0; tile < 4; tile++)
{
Tile8Data info = tiles.tile8data[tile];
int offset = offsets[tile];
for (var y = 0; y < 8; y++)
{
for (var x = 0; x < 4; x++)
{
CopyTile(x, y, xx, yy, offset, info, gfx16Data, gfx8Data);
}
}
}
xx += 16;
if (xx >= 128)
{
yy += 2048;
xx = 0;
}
}
}
private unsafe void CopyTile(int x, int y, int xx, int yy, int offset, Tile8Data tile, byte *gfx16Pointer, byte *gfx8Pointer)
{
int mx = x;
int my = y;
byte r = 0;
if (tile.mirror_h)
{
mx = 3 - x;
r = 1;
}
if (tile.mirror_v)
{
my = 7 - y;
}
int tx = ((tile.id / 16) * 512) + ((tile.id - ((tile.id / 16) * 16)) * 4);
var index = xx + yy + offset + (mx * 2) + (my * 128);
var pixel = gfx8Pointer[tx + (y * 64) + x];
gfx16Pointer[index + r ^ 1] = (byte)((pixel & 0x0F) + tile.palette * 16);
gfx16Pointer[index + r] = (byte)(((pixel >> 4) & 0x0F) + tile.palette * 16);
}