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Fix tree generation density for different mapgen chunk sizes

This commit is contained in:
Perttu Ahola 2012-01-27 04:16:44 +02:00
parent a32706bc26
commit e15dca2a9f
1 changed files with 10 additions and 5 deletions
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15
src/mapgen.cpp
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@ -1519,11 +1519,16 @@ void make_block(BlockMakeData *data)
// Full allocated area // Full allocated area
v3s16 full_node_min = (blockpos_min-1)*MAP_BLOCKSIZE; v3s16 full_node_min = (blockpos_min-1)*MAP_BLOCKSIZE;
v3s16 full_node_max = (blockpos_max+2)*MAP_BLOCKSIZE-v3s16(1,1,1); v3s16 full_node_max = (blockpos_max+2)*MAP_BLOCKSIZE-v3s16(1,1,1);
// Area of a block
double block_area_nodes = MAP_BLOCKSIZE*MAP_BLOCKSIZE;
v2s16 p2d_center(node_min.X+MAP_BLOCKSIZE/2, node_min.Z+MAP_BLOCKSIZE/2); v2s16 p2d_center(node_min.X+MAP_BLOCKSIZE/2, node_min.Z+MAP_BLOCKSIZE/2);
int rel_volume = (blockpos_max.X - blockpos_min.X + 1)
* (blockpos_max.Y - blockpos_min.Y + 1)
* (blockpos_max.Z - blockpos_max.Z + 1);
// Area of the block we are generating
double gen_area_nodes = MAP_BLOCKSIZE*MAP_BLOCKSIZE * rel_volume;
/* /*
Get average ground level from noise Get average ground level from noise
*/ */
@ -1998,7 +2003,7 @@ void make_block(BlockMakeData *data)
float surface_humidity = surface_humidity_2d(data->seed, p2d_center); float surface_humidity = surface_humidity_2d(data->seed, p2d_center);
bool is_jungle = surface_humidity > 0.75; bool is_jungle = surface_humidity > 0.75;
// Amount of trees // Amount of trees
u32 tree_count = block_area_nodes * tree_amount_2d(data->seed, p2d_center); u32 tree_count = gen_area_nodes * tree_amount_2d(data->seed, p2d_center);
if(is_jungle) if(is_jungle)
tree_count *= 5; tree_count *= 5;
@ -2132,7 +2137,7 @@ void make_block(BlockMakeData *data)
Add some kind of random stones Add some kind of random stones
*/ */
u32 random_stone_count = block_area_nodes * u32 random_stone_count = gen_area_nodes *
randomstone_amount_2d(data->seed, p2d_center); randomstone_amount_2d(data->seed, p2d_center);
// Put in random places on part of division // Put in random places on part of division
for(u32 i=0; i<random_stone_count; i++) for(u32 i=0; i<random_stone_count; i++)
@ -2166,7 +2171,7 @@ void make_block(BlockMakeData *data)
Add larger stones Add larger stones
*/ */
u32 large_stone_count = block_area_nodes * u32 large_stone_count = gen_area_nodes *
largestone_amount_2d(data->seed, p2d_center); largestone_amount_2d(data->seed, p2d_center);
//u32 large_stone_count = 1; //u32 large_stone_count = 1;
// Put in random places on part of division // Put in random places on part of division