add snake

codes/snake/utils.py

@@ -0,0 +1,55 @@
+import numpy as np
+DISPLAY_SIZE = 560
+GRID_SIZE = 40
+WALL_SIZE = 40
+WHITE = (255, 255, 255)
+RED = (255, 0, 0)
+BLUE = (72, 61, 139)
+BLACK = (0, 0, 0)
+GREEN = (0, 255, 0)
+
+NUM_ADJOINING_WALL_X_STATES=3
+NUM_ADJOINING_WALL_Y_STATES=3
+NUM_FOOD_DIR_X=3
+NUM_FOOD_DIR_Y=3
+NUM_ADJOINING_BODY_TOP_STATES=2
+NUM_ADJOINING_BODY_BOTTOM_STATES=2
+NUM_ADJOINING_BODY_LEFT_STATES=2
+NUM_ADJOINING_BODY_RIGHT_STATES=2
+NUM_ACTIONS = 4
+
+CHECKPOINT = 'checkpoint.npy'
+
+def create_q_table():
+	return np.zeros((NUM_ADJOINING_WALL_X_STATES, NUM_ADJOINING_WALL_Y_STATES, NUM_FOOD_DIR_X, NUM_FOOD_DIR_Y,
+					 NUM_ADJOINING_BODY_TOP_STATES, NUM_ADJOINING_BODY_BOTTOM_STATES, NUM_ADJOINING_BODY_LEFT_STATES,
+					 NUM_ADJOINING_BODY_RIGHT_STATES, NUM_ACTIONS))
+
+def sanity_check(arr):
+	if (type(arr) is np.ndarray and 
+		arr.shape==(NUM_ADJOINING_WALL_X_STATES, NUM_ADJOINING_WALL_Y_STATES, NUM_FOOD_DIR_X, NUM_FOOD_DIR_Y,
+					 NUM_ADJOINING_BODY_TOP_STATES, NUM_ADJOINING_BODY_BOTTOM_STATES, NUM_ADJOINING_BODY_LEFT_STATES,
+					 NUM_ADJOINING_BODY_RIGHT_STATES,NUM_ACTIONS)):
+		return True
+	else:
+		return False
+
+def save(filename, arr):
+	if sanity_check(arr):
+		np.save(filename,arr)
+		return True
+	else:
+		print("Failed to save model")
+		return False
+
+def load(filename):
+	try:
+		arr = np.load(filename)
+		if sanity_check(arr):
+			print("Loaded model successfully")
+			return arr
+		print("Model loaded is not in the required format")
+		return None
+	except:
+		print("Filename doesnt exist")
+		return None