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Fix #1219
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1 changed files with 18 additions and 6 deletions
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@ -1026,23 +1026,35 @@ boolean P_BlockLinesIterator(INT32 x, INT32 y, boolean (*func)(line_t *))
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//
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boolean P_BlockThingsIterator(INT32 x, INT32 y, boolean (*func)(mobj_t *))
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{
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mobj_t *mobj;
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blocknode_t *block;
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mobj_t *bnext = NULL;
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blocknode_t *block, *next = NULL;
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if (x < 0 || y < 0 || x >= bmapwidth || y >= bmapheight)
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return true;
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// Check interaction with the objects in the blockmap.
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for (block = blocklinks[y*bmapwidth + x]; block; block = block->mnext)
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for (block = blocklinks[y*bmapwidth + x]; block; block = next)
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{
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mobj = block->mobj;
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next = block->mnext;
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if (next)
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P_SetTarget(&bnext, next->mobj); // We want to note our reference to bnext here in case it is MF_NOTHINK and gets removed!
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if (!func(mobj))
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if (!func(block->mobj))
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{
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P_SetTarget(&bnext, NULL);
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return false;
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if (P_MobjWasRemoved(tmthing)) // func just broke blockmap chain, cannot continue.
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}
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if (P_MobjWasRemoved(tmthing) // func just popped our tmthing, cannot continue.
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|| (bnext && P_MobjWasRemoved(bnext))) // func just broke blockmap chain, cannot continue.
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{
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P_SetTarget(&bnext, NULL);
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return true;
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}
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}
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P_SetTarget(&bnext, NULL);
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return true;
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}
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