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43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
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#include "minecraft/world/level/newbiome/layer/RiverLayer.h"
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#include <stdint.h>
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#include <memory>
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#include <vector>
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#include "minecraft/world/level/biome/Biome.h"
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#include "minecraft/world/level/newbiome/layer/Layer.h"
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RiverLayer::RiverLayer(int64_t seedMixup, std::shared_ptr<Layer> parent)
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: Layer(seedMixup) {
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this->parent = parent;
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}
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std::vector<int> RiverLayer::getArea(int xo, int yo, int w, int h) {
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int px = xo - 1;
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int py = yo - 1;
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int pw = w + 2;
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int ph = h + 2;
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std::vector<int> p = parent->getArea(px, py, pw, ph);
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std::vector<int> result(w * h);
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for (int y = 0; y < h; y++) {
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for (int x = 0; x < w; x++) {
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int l = p[(x + 0) + (y + 1) * pw];
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int r = p[(x + 2) + (y + 1) * pw];
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int u = p[(x + 1) + (y + 0) * pw];
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int d = p[(x + 1) + (y + 2) * pw];
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int c = p[(x + 1) + (y + 1) * pw];
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if (c == 0 || (l == 0 || r == 0 || u == 0 || d == 0) || c != l ||
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c != u || c != r || c != d) {
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result[x + y * w] = Biome::river->id;
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} else {
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result[x + y * w] = -1;
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}
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}
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}
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return result;
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}
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