4jcraft/targets/minecraft/world/level/newbiome/layer/AddMushroomIslandLayer.cpp

44 lines
1.3 KiB
C++

#include "minecraft/world/level/newbiome/layer/AddMushroomIslandLayer.h"
#include <stdint.h>
#include <memory>
#include <vector>
#include "minecraft/world/level/biome/Biome.h"
#include "minecraft/world/level/newbiome/layer/Layer.h"
AddMushroomIslandLayer::AddMushroomIslandLayer(int64_t seedMixup,
std::shared_ptr<Layer> parent)
: Layer(seedMixup) {
this->parent = parent;
}
std::vector<int> AddMushroomIslandLayer::getArea(int xo, int yo, int w, int h) {
int px = xo - 1;
int py = yo - 1;
int pw = w + 2;
int ph = h + 2;
std::vector<int> p = parent->getArea(px, py, pw, ph);
std::vector<int> result(w * h);
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
int n1 = p[(x + 0) + (y + 0) * pw];
int n2 = p[(x + 2) + (y + 0) * pw];
int n3 = p[(x + 0) + (y + 2) * pw];
int n4 = p[(x + 2) + (y + 2) * pw];
int c = p[(x + 1) + (y + 1) * pw];
initRandom(x + xo, y + yo);
if (c == 0 && (n1 == 0 && n2 == 0 && n3 == 0 && n4 == 0) &&
nextRandom(100) == 0) {
result[x + y * w] = Biome::mushroomIsland->id;
} else {
result[x + y * w] = c;
}
}
}
return result;
}