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Generate blobs of dirt and gravel in stone

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This commit is contained in:
Perttu Ahola 2012-03-29 02:23:59 +03:00
parent 582ca33507
commit d376148ca1
1 changed files with 37 additions and 2 deletions
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39
src/mapgen.cpp
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@ -1345,8 +1345,7 @@ void make_block(BlockMakeData *data)
/*
Create a block-specific seed
*/
/*u32 blockseed = (u32)(data->seed%0x100000000ULL) + full_node_min.Z*38134234
+ full_node_min.Y*42123 + full_node_min.X*23;*/
u32 blockseed = get_blockseed(data->seed, full_node_min);
/*
Cache some ground type values for speed
@ -1445,6 +1444,42 @@ void make_block(BlockMakeData *data)
}//timer1
/*
Add blobs of dirt and gravel underground
*/
{
PseudoRandom pr(blockseed+983);
for(int i=0; i<volume_nodes/12/12/12; i++){
v3s16 size(
pr.range(1, 6),
pr.range(1, 6),
pr.range(1, 6)
);
v3s16 p0(
pr.range(node_min.X, node_max.X)-size.X/2,
pr.range(node_min.Y, node_max.Y)-size.Y/2,
pr.range(node_min.Z, node_max.Z)-size.Z/2
);
MapNode n1;
if(p0.Y > -32 && pr.range(0,1) == 0)
n1 = MapNode(c_dirt);
else
n1 = MapNode(c_gravel);
for(int x1=0; x1<size.X; x1++)
for(int y1=0; y1<size.Y; y1++)
for(int z1=0; z1<size.Z; z1++)
{
v3s16 p = p0 + v3s16(x1,y1,z1);
u32 i = vmanip.m_area.index(p);
if(!vmanip.m_area.contains(i))
continue;
if(vmanip.m_data[i].getContent() != c_stone)
continue;
vmanip.m_data[i] = n1;
}
}
}
// Limit dirt flow area by 1 because mud is flown into neighbors.
assert(central_area_size.X == central_area_size.Z);
s16 mudflow_minpos = 0-max_spread_amount+1;