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Fix MapgenV6::generateCaves possible division by 0 and misc. cosmetic fixes

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This commit is contained in:
kwolekr 2013-03-30 21:24:37 -04:00
parent 414f0275cf
commit c517215bcf
3 changed files with 23 additions and 16 deletions
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36
src/mapgen_v6.cpp
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@ -928,20 +928,20 @@ void MapgenV6::growGrass() {
void MapgenV6::defineCave(Cave &cave, PseudoRandom ps,
v3s16 node_min, bool large_cave) {
cave.min_tunnel_diameter = 2;
cave.max_tunnel_diameter = ps.range(2,6);
cave.dswitchint = ps.range(1,14);
cave.flooded = true; //large_cave && ps.range(0,4);
if(large_cave){
cave.part_max_length_rs = ps.range(2,4);
cave.tunnel_routepoints = ps.range(5, ps.range(15,30));
cave.min_tunnel_diameter = 5;
cave.max_tunnel_diameter = ps.range(7, ps.range(8,24));
} else {
cave.part_max_length_rs = ps.range(2,9);
cave.tunnel_routepoints = ps.range(10, ps.range(15,30));
}
cave.large_cave_is_flat = (ps.range(0,1) == 0);
cave.min_tunnel_diameter = 2;
cave.max_tunnel_diameter = ps.range(2,6);
cave.dswitchint = ps.range(1,14);
cave.flooded = true; //large_cave && ps.range(0,4);
if (large_cave){
cave.part_max_length_rs = ps.range(2,4);
cave.tunnel_routepoints = ps.range(5, ps.range(15,30));
cave.min_tunnel_diameter = 5;
cave.max_tunnel_diameter = ps.range(7, ps.range(8,24));
} else {
cave.part_max_length_rs = ps.range(2,9);
cave.tunnel_routepoints = ps.range(10, ps.range(15,30));
}
cave.large_cave_is_flat = (ps.range(0,1) == 0);
}
@ -1120,7 +1120,13 @@ void MapgenV6::generateCaves(int max_stone_y) {
rp.Z = ar.Z-1;
vec = rp - orp;
for(float f=0; f<1.0; f+=1.0/vec.getLength())
float veclen = vec.getLength();
// As odd as it sounds, veclen is *exactly*
// 0.0 sometimes, causing a FPE
if (veclen == 0.0)
veclen = 1.0;
for(float f=0; f<1.0; f+=1.0/veclen)
{
v3f fp = orp + vec * f;
fp.X += 0.1*ps.range(-10,10);