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convert heightmap to delta #1

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convert heightmap to delta #1

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20 changes: 10 additions & 10 deletions main.cu
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Original file line number Diff line number Diff line change
Expand Up @@ -105,7 +105,7 @@ __global__ __launch_bounds__(256, 2) void crack(uint64_t seed_offset, int32_t *n

#pragma unroll
for (int i = 0; i < 1024; i++) {
heightMap[i] = FLOOR_LEVEL;
heightMap[i] = 0;
}

int32_t currentHighestPos = 0, posMap;
Expand All @@ -117,7 +117,7 @@ __global__ __launch_bounds__(256, 2) void crack(uint64_t seed_offset, int32_t *n

for (i = -90; i < 0; i += 9) {
// Keep, most threads finish early this way
if (heightMap[currentHighestPos] - WANTED_CACTUS_HEIGHT - FLOOR_LEVEL < i)
if (heightMap[currentHighestPos] - WANTED_CACTUS_HEIGHT < i)
return;

initialPosX = java_random::next(&seed, 4) + 8;
Expand Down Expand Up @@ -151,7 +151,7 @@ __global__ __launch_bounds__(256, 2) void crack(uint64_t seed_offset, int32_t *n
}
}

initialPosY = java_random::next_int_unknown(&seed, (heightMap[initialPosX + initialPosZ * 32] + 1) * 2);
initialPosY = java_random::next_int_unknown(&seed, ((heightMap[initialPosX + initialPosZ * 32] + 1) + FLOOR_LEVEL) * 2);

for (a = 0; a < 10; a++) {
posX = initialPosX + java_random::next(&seed, 3) - java_random::next(&seed, 3);
Expand Down Expand Up @@ -187,15 +187,15 @@ __global__ __launch_bounds__(256, 2) void crack(uint64_t seed_offset, int32_t *n
}

// Keep
if (posY <= heightMap[posMap])
if (posY <= heightMap[posMap] + FLOOR_LEVEL)
continue;

for (j = 0; j < 1 + java_random::next_int_unknown(&seed, java_random::next_int(&seed) + 1); j++) {
if ((posY + j - 1) > heightMap[posMap] || posY < 0) continue;
if ((posY + j) <= heightMap[(posX + 1) + posZ * 32]) continue;
if ((posY + j) <= heightMap[posX + (posZ - 1) * 32]) continue;
if ((posY + j) <= heightMap[(posX - 1) + posZ * 32]) continue;
if ((posY + j) <= heightMap[posX + (posZ + 1) * 32]) continue;
if ((posY + j - 1) > heightMap[posMap] + FLOOR_LEVEL || posY < 0) continue;
if ((posY + j) <= heightMap[(posX + 1) + posZ * 32] + FLOOR_LEVEL) continue;
if ((posY + j) <= heightMap[posX + (posZ - 1) * 32] + FLOOR_LEVEL) continue;
if ((posY + j) <= heightMap[(posX - 1) + posZ * 32] + FLOOR_LEVEL) continue;
if ((posY + j) <= heightMap[posX + (posZ + 1) * 32] + FLOOR_LEVEL) continue;

heightMap[posMap]++;

Expand All @@ -205,7 +205,7 @@ __global__ __launch_bounds__(256, 2) void crack(uint64_t seed_offset, int32_t *n
}
}

if (heightMap[currentHighestPos] - FLOOR_LEVEL >= WANTED_CACTUS_HEIGHT) {
if (heightMap[currentHighestPos] >= WANTED_CACTUS_HEIGHT) {
uint64_t addend = 0;
if (position == 0)
addend = NEIGHBOR1;
Expand Down