started removing KLib related code:

- assertions
- distributions
new helper methods
worked on stairs
worked on grid-walkers
worked on navigation

math/Distributions.h

@@ -0,0 +1,8 @@
+#ifndef DISTRIBUTIONS_H
+#define DISTRIBUTIONS_H
+
+#include "distribution/Normal.h"
+#include "distribution/Exponential.h"
+#include "distribution/Logistic.h"
+
+#endif // DISTRIBUTIONS_H

math/DrawList.h

@@ -4,7 +4,7 @@
 #include <vector>
 #include <random>
 
-#include <KLib/Assertions.h>
+#include "../Assertions.h"
 
 /**
  * add elements of a certain probability
@@ -72,7 +72,7 @@ public:
 		const auto tmp = std::lower_bound(elements.begin(), elements.end(), rndVal);
 
 		// sanity check
-		_assertFalse(tmp == elements.end(), "draw() did not find a valid element");
+		Assert::isFalse(tmp == elements.end(), "draw() did not find a valid element");
 
 		// done
 		return (*tmp).element;

math/distribution/Exponential.h

@@ -0,0 +1,4 @@
+#ifndef EXPONENTIAL_H
+#define EXPONENTIAL_H
+
+#endif // EXPONENTIAL_H

math/distribution/Exponential.h.autosave

@@ -0,0 +1,54 @@
+#ifndef EXPONENTIAL_H
+#define EXPONENTIAL_H
+
+#include <cmath>
+#include <random>
+
+namespace Distribution {
+
+	template <typename T> class Exponential {
+		
+		private:
+	
+			T lambda;
+	
+			std::minstd_rand gen;
+			std::exponential_distribution<T> dist;
+	
+		public:
+	
+			/** ctor */
+			Exponential(const T lambda) : lambda(lambda), gen(1234), dist(lambda) {
+				;
+			}
+	
+	
+			/** get probability for the given value */
+			T getProbability(const T val) const {
+				return lambda * std::exp(-lambda * val);
+			}
+	
+			/** get a normally distributed random number */
+			T draw() {
+				return dist(gen);
+			}
+	
+			/** set the seed to use */
+			void setSeed(const long seed) {
+				gen.seed(seed);
+			}
+	
+	
+			/** get the probability for the given value */
+			static double getProbability(const double lambda, const double val) {
+				return lambda * std::exp(-lambda * val);
+			}
+	
+		};
+		
+		
+	};
+
+}
+
+#endif // EXPONENTIAL_H

math/distribution/Logistic.h

@@ -0,0 +1,22 @@
+#ifndef LOGISTIC_H
+#define LOGISTIC_H
+
+
+namespace Distribution {
+
+	// https://de.wikipedia.org/wiki/Logistische_Verteilung
+	template <typename T> class Logistic {
+
+	public:
+
+		/** alpha = move the center, beta = slope */
+		static T getCDF(const T x, const T alpha, const T beta) {
+			return 1 / (1 + std::exp( -((x-alpha)/beta) ) );
+		}
+
+
+	};
+
+}
+
+#endif // LOGISTIC_H

math/distribution/Normal.h

@@ -0,0 +1,57 @@
+#ifndef NORMAL_H
+#define NORMAL_H
+
+#include <cmath>
+#include <random>
+
+namespace Distribution {
+
+	/** normal distribution */
+	template <typename T> class Normal {
+
+	private:
+
+		const T mu;
+		const T sigma;
+		const T _a;
+
+		std::minstd_rand gen;
+		std::normal_distribution<T> dist;
+
+	public:
+
+		/** ctor */
+		Normal(const T mu, const T sigma) :
+			mu(mu), sigma(sigma), _a(1.0 / (sigma * std::sqrt(2.0 * M_PI))), gen(1234), dist(mu,sigma) {
+
+		}
+
+		/** get probability for the given value */
+		T getProbability(const T val) const {
+			const T b = -0.5 * ((val-mu)/sigma) * ((val-mu)/sigma);
+			return _a * std::exp(b);
+		}
+
+		/** get a normally distributed random number */
+		T draw() {
+			return dist(gen);
+		}
+
+		/** set the seed to use */
+		void setSeed(const long seed) {
+			gen.seed(seed);
+		}
+
+
+		/** get the probability for the given value */
+		static T getProbability(const T mu, const T sigma, const T val) {
+			const T a = 1.0 / (sigma * std::sqrt(2.0 * M_PI));
+			const T b = -0.5 * ((val-mu)/sigma) * ((val-mu)/sigma);
+			return a * std::exp(b);
+		}
+
+	};
+
+}
+
+#endif // NORMAL_H