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Avoid a segfault when the hull hasn't been portalized.

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Serves me right for forgetting to test the main engine :P
This commit is contained in:
Bill Currie 2011-12-03 09:06:57 +09:00
parent 27642a080a
commit d9a641c600
1 changed files with 8 additions and 4 deletions
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12
libs/models/trace.c
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@ -592,7 +592,8 @@ MOD_TraceLine (hull_t *hull, int num,
split_plane = tstack->plane;
moved = tstack->start_frac > 0;
leaf = hull->nodeleafs[tstack->num].leafs[side ^ 1];
if (hull->nodeleafs)
leaf = hull->nodeleafs[tstack->num].leafs[side ^ 1];
num = hull->clipnodes[tstack->num].children[side ^ 1];
}
@ -606,7 +607,8 @@ MOD_TraceLine (hull_t *hull, int num,
if (start_dist >= offset && end_dist >= offset) {
// entirely in front of the plane
plane = 0;
leaf = hull->nodeleafs[num].leafs[0];
if (hull->nodeleafs)
leaf = hull->nodeleafs[num].leafs[0];
num = node->children[0];
continue;
}
@ -617,7 +619,8 @@ MOD_TraceLine (hull_t *hull, int num,
|| (!offset && start_dist < -offset && end_dist < -offset)) {
// entirely behind the plane
plane = 0;
leaf = hull->nodeleafs[num].leafs[1];
if (hull->nodeleafs)
leaf = hull->nodeleafs[num].leafs[1];
num = node->children[1];
continue;
}
@ -657,7 +660,8 @@ MOD_TraceLine (hull_t *hull, int num,
VectorMultAdd (start, frac[side], dist, end);
leaf = hull->nodeleafs[num].leafs[side];
if (hull->nodeleafs)
leaf = hull->nodeleafs[num].leafs[side];
num = node->children[side];
}
}