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PhAddMergeTiles()

Merge two list tiles, eliminating overlap

Synopsis:

PhTile_t * PhAddMergeTiles( PhTile_t *tiles,
                            PhTile_t *add_tiles,
                            int *added );

Arguments:

tiles

A pointer to a list of tiles.

add_tiles

A pointer to a list of tiles that you want to merge into the tiles list.

added

NULL, or a pointer to a location that the function sets to:

• 0 if tiles or add_tiles is NULL, or tiles completely covers add_tiles
• 1 otherwise.

Library:

ph

Description:

PhAddMergeTiles() merges the list of tiles pointed to by add_tiles into the list pointed to by tiles and returns a pointer to the resulting list.

This function makes sure that the tiles in the merged list don't overlap.

Returns:

A pointer to the merged list. This isn't always the same as the tiles pointer.

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Don't free() the list of tiles; instead, use PhFreeTiles() to return the tiles to the internal pool.

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Classification:

Photon

See also:

PhClipTilings(), PhCoalesceTiles(), PhCopyTiles(), PhDeTranslateTiles(), PhFreeTiles(), PhGetTile(), PhIntersectTilings(), PhMergeTiles(), PhRectsToTiles(), PhSortTiles(), PhTile_t, PhTilesToRects(), PhTranslateTiles()

"Using damage tiles" in the Raw Drawing and Animation chapter of the Photon Programmer's Guide