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Mineshafts for pre-1.13

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This commit is contained in:
Cubitect 2021-07-08 22:49:07 +02:00
parent cb66b41328
commit 3b65b4bbf7
2 changed files with 18 additions and 6 deletions
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22
finders.c
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@ -225,7 +225,7 @@ int getStructurePos(int structureType, int mc, uint64_t seed, int regX, int regZ
case Mineshaft:
pos->x = (int)( ((uint32_t)regX << 4) );
pos->z = (int)( ((uint32_t)regZ << 4) );
return isMineshaftChunk(seed, regX, regZ);
return isMineshaftChunk(mc, seed, regX, regZ);
case Fortress:
if (mc < MC_1_16) {
@ -261,15 +261,27 @@ int getStructurePos(int structureType, int mc, uint64_t seed, int regX, int regZ
return 0;
}
int isMineshaftChunk(uint64_t seed, int chunkX, int chunkZ)
int isMineshaftChunk(int mc, uint64_t seed, int chunkX, int chunkZ)
{
uint64_t s;
setSeed(&s, seed);
uint64_t i = nextLong(&s);
uint64_t j = nextLong(&s);
s = chunkX * i ^ chunkZ * j ^ seed;
setSeed(&s, s);
return nextDouble(&s) < 0.004;
setSeed(&s, chunkX * i ^ chunkZ * j ^ seed);
if (mc >= MC_1_13)
{
return nextDouble(&s) < 0.004;
}
else
{
int d = chunkX;
if (-chunkX > d) d = -chunkX;
if (+chunkZ > d) d = +chunkZ;
if (-chunkZ > d) d = -chunkZ;
skipNextN(&s, 1);
return nextDouble(&s) < 0.004 && nextInt(&s, 80) < d;
}
}

2
finders.h
View File

@ -327,7 +327,7 @@ Pos getLargeStructureChunkInRegion(StructureConfig config, uint64_t seed, int re
* The placement and biome check within a valid chunk is at block position (9,9)
* or at (2,2) with layer scale=4 from 1.16 onwards.
*/
int isMineshaftChunk(uint64_t seed, int chunkX, int chunkZ);
int isMineshaftChunk(int mc, uint64_t seed, int chunkX, int chunkZ);
// not exacly a structure
static inline __attribute__((const))