Merge branch 'evaluations' into 'evo-neuro'

Evaluations

See merge request !1

README.md

+# Bipedal Walker Evo
+
+Trying to solve the bipedal walker with an evolution algorithm
\ No newline at end of file

brain.py

+import numpy as np
+import random
+import copy
+import pickle
+
+
+class Brain:
+
+    def __init__(self, size, load_brain):
+        self.directions = []
+        self.step = 0
+        if load_brain:
+            self.load()
+        else:
+            self.increase_moves(size)
+
+    def get_move(self):
+        move = self.directions[self.step]
+        self.step += 1
+        return move
+
+    # we want different and random movements
+    def increase_moves(self, size):
+        for i in range(size):
+            self.directions.append(np.random.uniform(-1, 1, 4))
+
+    # returns a copy of the given brain
+    def clone(self):
+        clone = Brain(len(self.directions), False)
+        for i in range(len(self.directions)):
+            clone.directions[i] = copy.copy(self.directions[i])
+        return clone
+
+
+    def mutate(self, mutation_factor):  # mutates the brain by setting some of the directions to random movements
+        for i in range(len(self.directions)):
+            if random.random() <= mutation_factor:
+                self.directions[i] = np.random.uniform(-1, 1, 4)
+
+    def save(self):
+        with open('best_brain', 'wb') as fp:
+            pickle.dump(self.directions, fp)
+
+    def load(self):
+        with open('best_brain', 'rb') as fp:
+            self.directions = pickle.load(fp)
+
+if __name__ == '__main__':  # for debugging
+    brain_inst = Brain(100, True)
+    print(brain_inst.directions)
+    print(len(brain_inst.directions))