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Code Issues Releases Wiki Activity

Euclidean (non-torus) should no longer act weirdly when you travel far away

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Zeno Rogue 2017-12-28 16:58:07 +01:00
parent 11569c693d
commit ead56c9c33
1 changed files with 10 additions and 5 deletions
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15
cell.cpp
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@ -194,7 +194,10 @@ heptagon *getDodecahedron(int i) {
cell*& euclideanAtCreate(int vec); cell*& euclideanAtCreate(int vec);
static const int max_vec = (1<<15); static const int max_vec = (1<<14);
// NOTE: patterns assume that pair_to_vec(0,1) % 3 == 2!
// Thus, pair_to_vec(0,1) must not be e.g. a power of four
int pair_to_vec(int x, int y) { int pair_to_vec(int x, int y) {
return x + (y << 15); return x + (y << 15);
@ -462,17 +465,19 @@ struct hrmap_euclidean : hrmap {
} }
}; };
euclideanSlab* euclidean[256][256]; static const int slabs = max_vec / 256;
euclideanSlab* euclidean[slabs][slabs];
hrmap_euclidean() { hrmap_euclidean() {
for(int y=0; y<256; y++) for(int x=0; x<256; x++) for(int y=0; y<slabs; y++) for(int x=0; x<slabs; x++)
euclidean[y][x] = NULL; euclidean[y][x] = NULL;
} }
cell*& at(int vec) { cell*& at(int vec) {
auto p = vec_to_pair(vec); auto p = vec_to_pair(vec);
int x = p.first, y = p.second; int x = p.first, y = p.second;
euclideanSlab*& slab = euclidean[(y>>8)&255][(x>>8)&255]; euclideanSlab*& slab = euclidean[(y>>8)&(slabs-1)][(x>>8)&(slabs-1)];
if(!slab) slab = new hrmap_euclidean::euclideanSlab; if(!slab) slab = new hrmap_euclidean::euclideanSlab;
return slab->a[y&255][x&255]; return slab->a[y&255][x&255];
} }
@ -480,7 +485,7 @@ struct hrmap_euclidean : hrmap {
map<heptagon*, struct cdata> eucdata; map<heptagon*, struct cdata> eucdata;
~hrmap_euclidean() { ~hrmap_euclidean() {
for(int y=0; y<256; y++) for(int x=0; x<256; x++) for(int y=0; y<slabs; y++) for(int x=0; x<slabs; x++)
if(euclidean[y][x]) { if(euclidean[y][x]) {
delete euclidean[y][x]; delete euclidean[y][x];
euclidean[y][x] = NULL; euclidean[y][x] = NULL;