The Dink Network

You can use map_tile to change certain tiles in a screen. Here's a full description of map_tile quoted from the DinkC reference.

Category: Tile
Version: 1.08+
Prototype: int map_tile(int tile_position, int tile_index[-1]);

map_tile gets or sets the map tile for the tile at position tile_position.

The tile_position refers to a tile on the current screen. Tile 1 is in the upper left-hand corner, and the position counts left-to-right until Tile 96 at the bottom-right corner.

The tile_index will range from 1 to 4428. tile_index 1 is the tile in the upper-left corner of tileset 1, tile 109 is the tile in the upper-left corner of tileset 2, and so on.

You must use draw_background or draw_screen to show changed tiles.

It is recommended that you either use the map_tile to get the value of a tile you already know, or to create your own function to do the conversion for you:

// get_map_tile_index
// &arg1 = Tileset (1-41)
// &arg2 = Tile X coordinate (1-12)
// &arg3 = Tile Y coordinate (1-9)
void get_map_tile_index()
{
	int &index = 1;

	// Calculate the Tileset offset
	int &temp = &arg1;
	&temp -= 1;
	&temp * 108;
	&index += &temp;

	// Calculate the X offset
	&temp = &arg2;
	&temp -= 1;
	&index += &temp;

	// Calculate the Y offset
	&temp = &arg2;
	&temp -= 1;
	&temp * 12;
	&index += &temp;

	return(&index);
}