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Code Issues Releases Wiki Activity

Mapgen V7: Fix out-of-bounds array access

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This commit is contained in:
kwolekr 2013-07-06 15:22:51 -04:00
parent 06266abd6e
commit 65874c25db
1 changed files with 7 additions and 5 deletions
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12
src/mapgen_v7.cpp
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@ -427,19 +427,19 @@ void MapgenV7::generateMountainTerrain() {
return;
MapNode n_stone(c_stone);
u32 index = 0;
u32 j = 0;
for (s16 z = node_min.Z; z <= node_max.Z; z++)
for (s16 y = node_min.Y; y <= node_max.Y; y++) {
u32 vi = vm->m_area.index(node_min.X, y, z);
for (s16 x = node_min.X; x <= node_max.X; x++) {
int j = (z - node_min.Z) * csize.X + (x - node_min.X);
int index = (z - node_min.Z) * csize.X + (x - node_min.X);
if (getMountainTerrainFromMap(index, j, y))
if (getMountainTerrainFromMap(j, index, y))
vm->m_data[vi] = n_stone;
vi++;
index++;
j++;
}
}
}
@ -517,7 +517,9 @@ void MapgenV7::generateBiomes() {
// boundary, but the chunk above has not been generated yet
if (y == node_max.Y && c_above == CONTENT_IGNORE &&
y == heightmap[index] && c == c_stone) {
int j = z * zstride + y * ystride + x;
int j = (z - node_min.Z) * zstride +
(y - node_min.Y) * ystride +
(x - node_min.X);
have_air = !getMountainTerrainFromMap(j, index, y);
}