PulseStudio/VoxelEngine
PulseStudio/VoxelEngine
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World generator update

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This commit is contained in:
MihailRis 2023-11-15 16:38:26 +03:00
parent be980b2aa6
commit 79aa754e66
1 changed files with 41 additions and 21 deletions
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62
src/voxels/WorldGenerator.cpp
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@ -14,16 +14,18 @@
#include "../definitions.h"
#include "../maths/voxmaths.h"
class Heightmap {
#define SEA_LEVEL 55
class Map2D {
int x, z;
int w, d;
float* heights;
public:
Heightmap(int x, int z, int w, int d)
Map2D(int x, int z, int w, int d)
: x(x), z(z), w(w), d(d) {
heights = new float[w * d];
}
~Heightmap() {
~Map2D() {
delete[] heights;
}
@ -83,10 +85,10 @@ float calc_height(fnl_state *noise, int real_x, int real_z){
height += fnlGetNoise3D(noise,
real_x*0.2f*8 + fnlGetNoise3D(noise, real_x*0.1f*8-23557,real_z*0.1f*8-6568, 0.0f)*50,
real_z*0.2f*8 + fnlGetNoise3D(noise, real_x*0.1f*8+4363,real_z*0.1f*8+4456, 0.0f)*50,
0.0f)*0.1f;
0.0f) * fnlGetNoise3D(noise, real_x*0.01f-834176,real_z*0.01f+23678, 0.0f);
height += fnlGetNoise3D(noise, real_x*0.1f*8-3465,real_z*0.1f*8+4534, 0.0f)*0.125f;
height += fnlGetNoise3D(noise, real_x*0.4f*8+4565,real_z*0.4f*8+46456, 0.0f)*0.0625f;
height *= fnlGetNoise3D(noise, real_x*0.0125f*8+1000,real_z*0.0125f*8+1000, 0.0f)/2+0.5f;
//height += fnlGetNoise3D(noise, real_x*0.4f+4565,real_z*0.4f*18+46456, 0.0f)*0.0625f * 0.3f;
height *= fnlGetNoise3D(noise, real_x*0.1f+1000,real_z*0.1f+1000, 0.0f)*0.5f+0.5f;
height += 1.0f;
height *= 64.0f;
return height;
@ -94,7 +96,8 @@ float calc_height(fnl_state *noise, int real_x, int real_z){
int generate_tree(fnl_state *noise,
PseudoRandom* random,
Heightmap& heights,
Map2D& heights,
Map2D& humidity,
int real_x,
int real_y,
int real_z,
@ -104,17 +107,18 @@ int generate_tree(fnl_state *noise,
random->setSeed(tileX*4325261+tileZ*12160951+tileSize*9431111);
bool gentree = fnlGetNoise3D(noise, tileX*3.0f+633, 0.0, tileZ*3.0f) > -0.1f && (random->rand() % 10) < 7;
if (!gentree)
return 0;
int randomX = (random->rand() % (tileSize/2)) - tileSize/4;
int randomZ = (random->rand() % (tileSize/2)) - tileSize/4;
int centerX = tileX * tileSize + tileSize/2 + randomX;
int centerZ = tileZ * tileSize + tileSize/2 + randomZ;
bool gentree = (random->rand() % 10) < humidity.get(centerX, centerZ) * 13;
if (!gentree)
return 0;
int height = (int)(heights.get(centerX, centerZ));
if (height < 57)
if (height < SEA_LEVEL+1)
return 0;
int lx = real_x - centerX;
int radius = random->rand() % 4 + 2;
@ -136,20 +140,36 @@ void WorldGenerator::generate(voxel* voxels, int cx, int cz, int seed){
PseudoRandom randomgrass;
int padding = 8;
Heightmap heights(cx * CHUNK_W - padding,
Map2D heights(cx * CHUNK_W - padding,
cz * CHUNK_D - padding,
CHUNK_W + padding * 2,
CHUNK_D + padding * 2);
// Influences to trees and sand generation
Map2D humidity(cx * CHUNK_W - padding,
cz * CHUNK_D - padding,
CHUNK_W + padding * 2,
CHUNK_D + padding * 2);
for (int z = -padding; z < CHUNK_D+padding; z++){
for (int x = -padding; x < CHUNK_W+padding; x++){
int real_x = x + cx * CHUNK_W;
int real_z = z + cz * CHUNK_D;
float height = calc_height(&noise, real_x, real_z);
float hum = fnlGetNoise3D(&noise, real_x * 0.3 + 633, 0.0, real_z * 0.3);
if (height >= SEA_LEVEL) {
height = ((height - SEA_LEVEL) * 0.1) - 0.0;
height = powf(height, (1.0+hum - fmax(0.0, height) * 0.2));
height = height * 10 + SEA_LEVEL;
} else {
height *= 1.0f + (height-SEA_LEVEL) * 0.05f * hum;
}
heights.set(real_x, real_z, height);
humidity.set(real_x, real_z, hum);
}
}
for (int z = 0; z < CHUNK_D; z++){
int real_z = z + cz * CHUNK_D;
@ -159,35 +179,35 @@ void WorldGenerator::generate(voxel* voxels, int cx, int cz, int seed){
for (int y = 0; y < CHUNK_H; y++){
int real_y = y;
int id = real_y < 55 ? BLOCK_WATER : BLOCK_AIR;
int id = real_y < SEA_LEVEL ? BLOCK_WATER : BLOCK_AIR;
int states = 0;
if ((real_y == (int)height) && (54 < real_y)) {
if ((real_y == (int)height) && (SEA_LEVEL-2 < real_y)) {
id = BLOCK_GRASS_BLOCK;
} else if (real_y < (height - 6)){
id = BLOCK_STONE;
} else if (real_y < height){
id = BLOCK_DIRT;
} else {
int tree = generate_tree(&noise, &randomtree, heights, real_x, real_y, real_z, treesTile);
int tree = generate_tree(&noise, &randomtree, heights, humidity, real_x, real_y, real_z, treesTile);
if (tree) {
id = tree;
states = BLOCK_DIR_Y;
}
}
if ( ((height - (1.5 - 0.2 * pow(height - 54, 4))) < real_y) && (real_y < height)){
if (((height - (1.5 - 0.2 * pow(height - 54, 4))) < real_y) && (real_y < height) && humidity.get(real_x, real_z) < 0.1){
id = BLOCK_SAND;
}
if (real_y <= 2)
id = BLOCK_BEDROCK;
randomgrass.setSeed(real_x,real_z);
if ((id == 0) && (height > 55.5) && ((int)(height + 1) == real_y) && ((unsigned short)randomgrass.rand() > 56000)){
if ((id == 0) && (height > SEA_LEVEL+0.5) && ((int)(height + 1) == real_y) && ((unsigned short)randomgrass.rand() > 56000)){
id = BLOCK_GRASS;
}
if ((id == 0) && (height > 55.5) && ((int)(height + 1) == real_y) && ((unsigned short)randomgrass.rand() > 65000)){
if ((id == 0) && (height > SEA_LEVEL+0.5) && ((int)(height + 1) == real_y) && ((unsigned short)randomgrass.rand() > 65000)){
id = BLOCK_FLOWER;
}
if ((height > 56) && ((int)(height + 1) == real_y) && ((unsigned short)randomgrass.rand() > 65533)){
if ((height > SEA_LEVEL+1) && ((int)(height + 1) == real_y) && ((unsigned short)randomgrass.rand() > 65533)){
id = BLOCK_WOOD;
states = BLOCK_DIR_Y;
}