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Fix spaces float islands code

This commit is contained in:
proller 2013-11-10 18:24:45 +04:00
parent a92e90f684
commit d75b1718f8
1 changed files with 39 additions and 44 deletions
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83
src/mapgen_indev.cpp
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@ -345,52 +345,47 @@ void MapgenIndev::generateFloatIslands(int min_y) {
*/ */
void MapgenIndev::generateFloatIslands(int min_y) { void MapgenIndev::generateFloatIslands(int min_y) {
if (node_min.Y < min_y) return; if (node_min.Y < min_y) return;
PseudoRandom pr(blockseed + 985); PseudoRandom pr(blockseed + 985);
// originally from http://forum.minetest.net/viewtopic.php?id=4776 // originally from http://forum.minetest.net/viewtopic.php?id=4776
float RAR = 0.8 * farscale(0.4, node_min.Y); // 0.4; // Island rarity. float RAR = 0.8 * farscale(0.4, node_min.Y); // 0.4; // Island rarity in chunk layer. -0.4 = thick layer with holes, 0 = 50%, 0.4 = desert rarity, 0.7 = very rare.
float AMPY = 24; // 24; // Amplitude of island centre y variation. float AMPY = 24; // 24; // Amplitude of island centre y variation.
float TGRAD = 24; // 24; // Noise gradient to create top surface. float TGRAD = 24; // 24; // Noise gradient to create top surface. Tallness of island top.
float BGRAD = 24; // 24; // Noise gradient to create bottom surface. float BGRAD = 24; // 24; // Noise gradient to create bottom surface. Tallness of island bottom.
v3s16 p0(node_min.X, node_min.Y, node_min.Z); v3s16 p0(node_min.X, node_min.Y, node_min.Z);
MapNode n1(c_stone); MapNode n1(c_stone);
float xl = node_max.X - node_min.X; float xl = node_max.X - node_min.X;
float yl = node_max.Y - node_min.Y; float yl = node_max.Y - node_min.Y;
float zl = node_max.Z - node_min.Z; float zl = node_max.Z - node_min.Z;
u32 zstride = xl + 1; u32 zstride = xl + 1;
float midy = node_min.Y + yl * 0.5; float midy = node_min.Y + yl * 0.5;
u32 index = 0; u32 index = 0;
for (int z1 = 0; z1 <= zl; ++z1) for (int z1 = 0; z1 <= zl; ++z1)
{ for (int y1 = 0; y1 <= yl; ++y1)
for (int y1 = 0; y1 <= yl; ++y1) for (int x1 = 0; x1 <= xl; ++x1, ++index) {
{ int y = y1 + node_min.Y;
for (int x1 = 0; x1 <= xl; ++x1, ++index) u32 index2d = z1 * zstride + x1;
{ float noise3 = noiseindev_float_islands3->result[index2d];
int y = y1 + node_min.Y; float pmidy = midy + noise3 / 1.5 * AMPY;
u32 index2d = z1 * zstride + x1; float noise1 = noiseindev_float_islands1->result[index];
float noise3 = noiseindev_float_islands3->result[index2d]; float offset = y > pmidy ? (y - pmidy) / TGRAD : (pmidy - y) / BGRAD;
float pmidy = midy + noise3 / 1.5 * AMPY; float noise1off = noise1 - offset - RAR;
float noise1 = noiseindev_float_islands1->result[index]; if (noise1off > 0 && noise1off < 0.7) {
float offset = y > pmidy ? (y - pmidy) / TGRAD : (pmidy - y) / BGRAD; float noise2 = noiseindev_float_islands2->result[index];
float noise1off = noise1 - offset - RAR; if (noise2 - noise1off > -0.7) {
if (noise1off > 0 && noise1off < 0.7) { v3s16 p = p0 + v3s16(x1, y1, z1);
float noise2 = noiseindev_float_islands2->result[index]; u32 i = vm->m_area.index(p);
if (noise2 - noise1off > -0.7){ if (!vm->m_area.contains(i))
v3s16 p = p0 + v3s16(x1, y1, z1); continue;
u32 i = vm->m_area.index(p); // Cancel if not air
if (!vm->m_area.contains(i)) if (vm->m_data[i].getContent() != CONTENT_AIR)
continue; continue;
// Cancel if not air vm->m_data[i] = n1;
if (vm->m_data[i].getContent() != CONTENT_AIR) }
continue; }
vm->m_data[i] = n1; }
}
}
}
}
}
} }
void MapgenIndev::generateExperimental() { void MapgenIndev::generateExperimental() {