public void CopyRows(Palette src, int srcRow, int dstRow, int numRows)
{
Array.Copy(src.data, srcRow * 16, data, dstRow * 16, numRows * 16);
}
public byte AddAbility(ItemType item)
{
byte animGfxNum = (byte)(Rom.NumOfAnimGfx + item - ItemType.Long);
// find empty spot in palette
int palRow = 15;
for (int r = 1; r < 14; r++)
{
ushort color = palette.GetColor(r, 1);
bool blank = true;
for (int c = 2; c < 16; c++)
{
if (palette.GetColor(r, c) != color)
{
blank = false;
break;
}
}
if (blank)
{
Palette itemPal = item.AbilityPalette();
palette.CopyRows(itemPal, 0, r, 1);
palRow = r + 2;
break;
}
}
// find empty spot in animGfx
int animGfxSlot = 0;
for (int i = 0; i < 0x10; i++)
{
if (animTileset[i * 3] == 0)
{
animTileset[i * 3] = animGfxNum;
animGfxSlot = i;
break;
}
}
// find empty spot in tile table
int blockNum = 0x4C;
int tileVal = 0x40;
for (int i = 0x4C; i < 0x50; i++)
{
int offset = i * 4 + 1;
if (tilemap[offset] == 0x40 && tilemap[offset + 1] == 0x40 &&
tilemap[offset + 2] == 0x40 && tilemap[offset + 3] == 0x40)
{
tileVal = (palRow << 12) | (animGfxSlot * 4);
tilemap[offset] = (ushort)tileVal;
tilemap[offset + 1] = (ushort)(tileVal + 1);
tilemap[offset + 2] = (ushort)(tileVal + 2);
tilemap[offset + 3] = (ushort)(tileVal + 3);
blockNum = i;
break;
}
}
// fix Tilemap400
int tm400Offset = rom.Tilemap400Offset + (0xD0 + item - ItemType.Long) * 8;
rom.Write16(tm400Offset, (ushort)tileVal);
rom.Write16(tm400Offset + 2, (ushort)(tileVal + 1));
rom.Write16(tm400Offset + 4, (ushort)(tileVal + 2));
rom.Write16(tm400Offset + 6, (ushort)(tileVal + 3));
return((byte)blockNum);
}