diff options
Diffstat (limited to 'terrain.cpp')
| -rw-r--r-- | terrain.cpp | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/terrain.cpp b/terrain.cpp index 359cb84..35aef58 100644 --- a/terrain.cpp +++ b/terrain.cpp @@ -507,16 +507,17 @@ void Terrain::raise(float x, float z, float radius, float focus, float strength, } void Terrain::update(float x, float z) { + const int chunk_dist_threshold = chunk_size*4; std::set<std::pair<int, int> > chunk_indices; - int i = x - 100; + int i = x - chunk_dist_threshold; i -= i % chunk_size; - for(; i < x + 100; i += chunk_size) { - int j = z - 100; + for(; i < x + chunk_dist_threshold; i += chunk_size) { + int j = z - chunk_dist_threshold; j -= j % chunk_size; - for(; j < z + 100; j += chunk_size) { - float a = i - x; - float b = j - z; - if(sqrtf(a*a + b*b) < 100) + for(; j < z + chunk_dist_threshold; j += chunk_size) { + float a = i - x + chunk_size/2; + float b = j - z + chunk_size/2; + if(sqrtf(a*a + b*b) < chunk_dist_threshold) chunk_indices.insert(std::pair<int, int>(i, j)); } } @@ -525,7 +526,7 @@ void Terrain::update(float x, float z) { if(ind_it != chunk_indices.end()) { chunk_indices.erase(ind_it); } - if((*it)->distance(x, z) > 100) { + if((*it)->distance(x, z) > chunk_dist_threshold) { it = chunks.erase(it); } } |