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15.5 Destroying a heightmap
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To release the resources used by a heightmap, destroy it with :

C++ : TCODHeightMap::~TCODHeightMap()
C   : void TCOD_heightmap_delete(TCOD_heightmap_t *hm)
Py  : heightmap_delete(hm)

Parameter	Description
hm	In the C version, the address of the heightmap struct returned by the creation function.