Method Map_Tile_Draw

Source/Amiga/Graphics_Amiga.cpp:683–723

}

void cGraphics_Amiga::Map_Tile_Draw(cSurface* pTarget, uint16 pTile, uint16 pX, uint16 pY, uint16 pOffset) {
	uint8* Target = pTarget->GetSurfaceBuffer();

	pX *= (16 + pOffset);

	Target += (pY * (16 + pOffset)) * pTarget->GetWidth();
	Target += pX;

	uint8* TilePtr = mBlkData->data() + (pTile << 7);

	uint8* TargetRow = Target;

	// Each bitfield
	for (uint16 BitField = 0; BitField < 4; ++BitField) {

		// Each Tile Row
		for (uint16 i = 0; i < 16; ++i) {

			if (TilePtr > mBlkData->data() + mBlkData->size())
				return;

			uint16 RowData = readBEWord(TilePtr);
			TilePtr += 2;

			// Each pixel of a Tile Row
			for (uint16 x = 0; x < 16; ++x) {
				uint8 Bit = (RowData & 0x8000) ? 1 : 0;
				RowData <<= 1;

				if (Bit)
					*(Target + x) |= (Bit << BitField);

			}

			Target += pTarget->GetWidth();
		}

		// Next Bitfield
		Target = TargetRow;
	}
}

void cGraphics_Amiga::MapTiles_Draw() {
	mSurface->clearBuffer();