gonna make a noisemap generator next.

util/noise/pnoise2.hpp

@@ -0,0 +1,36 @@
+#ifndef PNOISE2_HPP
+#define PNOISE2_HPP
+
+#include <vector>
+#include <cmath>
+#include <algorithm>
+#include <functional>
+#include <random>
+#include "../vectorlogic/vec2.hpp"
+
+class PNoise2 {
+private:
+    std::vector<float> permutation;
+    std::default_random_engine rng;
+    float TR,TL,BR,BL;
+public:
+    PNoise2() {
+        permutation.reserve(256);
+        for (int i = 0; i < 256; i++){
+            permutation[i] = i;
+        }
+        std::ranges::shuffle(permutation, rng);
+        TR = permutation[permutation[1]+1];
+        TR = permutation[permutation[0]+1];
+        TR = permutation[permutation[1]+0];
+        TR = permutation[permutation[0]+0];
+    }
+
+    Vec2 GetConstantVector(Vec2 v) {
+        Vec2 h = v & 3;
+    }
+
+};
+
+#endif
+//https://rtouti.github.io/graphics/perlin-noise-algorithm