integrated perlin noise map into game as minimap

1 files changed, 28 insertions, 0 deletions

diff --git a/PerlinNoise.h b/PerlinNoise.h
new file mode 100644
index 0000000..9ef109b
--- /dev/null
+++ b/PerlinNoise.h
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+#include <vector>
+
+// THIS CLASS IS A TRANSLATION TO C++11 FROM THE REFERENCE
+// JAVA IMPLEMENTATION OF THE IMPROVED PERLIN FUNCTION (see http://mrl.nyu.edu/~perlin/noise/)
+// THE ORIGINAL JAVA IMPLEMENTATION IS COPYRIGHT 2002 KEN PERLIN
+
+// I ADDED AN EXTRA METHOD THAT GENERATES A NEW PERMUTATION VECTOR (THIS IS NOT PRESENT IN THE ORIGINAL IMPLEMENTATION)
+
+#ifndef PERLINNOISE_H
+#define PERLINNOISE_H
+
+class PerlinNoise {
+	// The permutation vector
+	std::vector<int> p;
+public:
+	// Initialize with the reference values for the permutation vector
+	PerlinNoise();
+	// Generate a new permutation vector based on the value of seed
+	PerlinNoise(unsigned int seed);
+	// Get a noise value, for 2D images z can have any value
+	double noise(double x, double y, double z);
+private:
+	double fade(double t);
+	double lerp(double t, double a, double b);
+	double grad(int hash, double x, double y, double z);
+};
+
+#endif