vbmDrawTileE

vbmDrawTileE( [address] );

• [address] - address of a tile to draw to the bitmap.

Description

Draws an 8x8 tile to the current location pointed to by screenmemory. EOR mode will 'toggle' pixels. Can be used to draw a tile, then draw again to restore the bitmap to what it was before.

There are four ways to draw a tile:

• vbmDrawTile - draws a tile, replacing the pixels at the current position on the bitmap
• vbmDrawTileO - draws a tile and merges it over the current pixels on the bitmap
• vbmDrawTileE - draws a tile and merges it using the EOR operation with the bitmap
• vbmClearTile - clears, or 'cuts out' the tile shape from the pixels on the bitmap

Example

gfx : array[] of byte = ( %11111111, %10000001, %10000001, %10011001, %10011001, %10000001, %10000001, %11111111 ); ... vbmSetColumn( 3 ); // set the fourth column (remember, starts at 0) screenmemory := screenmemory + 20; // move 20 pixels down vbmDrawTileE( gfx ); // draws the tile, merge with any pixels underneath it using an EOR operation

See also

• vbmDrawTileMap