merged new agent, display_assets and bfs

agent.py

@@ -3,8 +3,9 @@ import project_constants as const
 import json_generator as js
 import json
 
+
 # Class of our agent, initialization of it
- # movment functions (those defiend by the 'go_' prefix are not meant to actually move our agent, they just return some values 
+# movement functions (those defiend by the 'go_' prefix are not meant to actually move our agent, they just return some values
 # that are later used by another function called 'is_valid_move' (which is defined in Minefield));
 
 class Agent:
@@ -13,6 +14,28 @@ class Agent:
             data = json.load(json_data)
         self.row, self.column = data['agent_starting_position'].split(",")
         self.position = [int(self.row), int(self.column)]
+        # self.direction = const.Direction()
+        self.direction = const.Direction.UP
+
+    def rotate_left(self):
+        self.direction = self.direction.previous()
+
+    def rotate_right(self):
+        self.direction = self.direction.next()
+
+    def go(self):
+        if self.direction == const.Direction.RIGHT:
+            temp = self.go_right()
+            self.position[1] = temp[1]
+        elif self.direction == const.Direction.LEFT:
+            temp = self.go_left()
+            self.position[1] = temp[1]
+        elif self.direction == const.Direction.UP:
+            temp = self.go_up()
+            self.position[0] = temp[0]
+        elif self.direction == const.Direction.DOWN:
+            temp = self.go_down()
+            self.position[0] = temp[0]
 
     def go_right(self):
 

display_assets.py

@@ -29,7 +29,7 @@ def display_sapper(sapper_x, sapper_y, sapper_dir):
 
     if sapper_dir == const.Direction.RIGHT:
         const.SCREEN.blit(
-            pygame.transform.rotate(const.ASSET_SAPPER, 90),
+            pygame.transform.rotate(const.ASSET_SAPPER, 270),
             sapper_screen_coords
         )
 
@@ -41,7 +41,7 @@ def display_sapper(sapper_x, sapper_y, sapper_dir):
 
     if sapper_dir == const.Direction.LEFT:
         const.SCREEN.blit(
-            pygame.transform.rotate(const.ASSET_SAPPER, 270),
+            pygame.transform.rotate(const.ASSET_SAPPER, 90),
             sapper_screen_coords
         )
 

main.py

@@ -1,10 +1,12 @@
 # libraries
 import pygame
+import time
 from pyglet.gl import *  # for blocky textures
 
 # other files of this project
 import project_constants as const
 import minefield as mf
+import searching_algorithms.bfs as bfs
 from display_assets import display_sapper
 
 
@@ -22,6 +24,12 @@ def main():
     # create an instance of Minefield, pass necessary data
     minefield = mf.Minefield(const.MAP_RANDOM_10x10)
 
+    # get sequence of actions found by BFS algorythm
+    action_sequence = bfs.graphsearch(initial_state=bfs.State(row=minefield.agent.position[0],
+                                                              column=minefield.agent.position[1],
+                                                              direction=const.Direction.UP),
+                                      minefield=minefield)
+
     running = True
     while running:
         # FPS control
@@ -48,43 +56,30 @@ def main():
         display_sapper(
             minefield.agent.position[0],
             minefield.agent.position[1],
-            const.Direction.UP
+            minefield.agent.direction
         )
 
         # update graphics after blitting
         pygame.display.update()
 
-        # ============== #
+        # make the next move from sequence of actions
-        # === EVENTS === #
+        if len(action_sequence):
-        # ============== #
+            action = action_sequence.pop(0)
+            if action == const.Action.ROTATE_LEFT:
+                minefield.agent.rotate_left()
+            elif action == const.Action.ROTATE_RIGHT:
+                minefield.agent.rotate_right()
+            elif action == const.Action.GO:
+                minefield.agent.go()
 
+            time.sleep(const.ACTION_INTERVAL)
+
+        else:
             for event in pygame.event.get():
 
                 if event.type == pygame.QUIT:
                     running = False
 
-            # Assigning all input from keyboard as variables into an array
-            keys = pygame.key.get_pressed()
-
-            # Depending on what key we press, the agent will move in that direction
-            # DISCRETION : The only keys that are available are arrow keys
-            # DISCRETION : is_valid_move is a new brand function that now plays a critical role in movement of our Agent (It is NOT just the  "check up" function anymore)
-            if keys[pygame.K_RIGHT]:
-                target_row, target_column = minefield.agent.go_right()
-                minefield.is_valid_move(target_row, target_column)
-
-            elif keys[pygame.K_LEFT]:
-                target_row, target_column = minefield.agent.go_left()
-                minefield.is_valid_move(target_row, target_column)
-                
-            elif keys[pygame.K_UP]:
-                target_row, target_column = minefield.agent.go_up()
-                minefield.is_valid_move(target_row, target_column)
-
-            elif keys[pygame.K_DOWN]:
-                target_row, target_column = minefield.agent.go_down()
-                minefield.is_valid_move(target_row, target_column)
-
 
 if __name__ == "__main__":
     main()

minefield.py

@@ -93,7 +93,7 @@ class Minefield:
     def is_valid_move(self, target_row: int, target_column: int):
         if 0 <= target_row < const.V_GRID_VER_TILES \
             and 0 <= target_column < const.V_GRID_HOR_TILES \
-                and self.matrix[target_row][target_column] is None:
+                and self.matrix[target_row][target_column].mine is None:
 
             return True
 

project_constants.py

@@ -17,6 +17,8 @@ V_NAME_OF_WINDOW = "MineFusion TM"
 ASSETS_DIR = os.path.join("resources", "assets")
 V_FPS = 60
 
+ACTION_INTERVAL = 1   # interval between two actions in seconds
+
 V_TILE_SIZE = 60
 V_GRID_VER_TILES = V_GRID_HOR_TILES = 10  # vertical (number of rows), horizontal (number of columns)
 V_SCREEN_PADDING = 10
@@ -42,6 +44,14 @@ class Direction(Enum):
     DOWN = 2
     LEFT = 3
 
+    def next(self):
+        v = (self.value + 1) % 4
+        return Direction(v)
+
+    def previous (self):
+        v = (self.value - 1) % 4
+        return Direction(v)
+
 
 class Action(Enum):
     ROTATE_LEFT = 0

searching_algorithms/bfs.py

@@ -2,9 +2,10 @@ from __future__ import annotations
 from typing import List, Set
 
 from project_constants import Direction, Action
+from minefield import Minefield
 
 # temporary goal for testing
-GOAL = (9, 9)
+GOAL = (2, 2)
 
 
 class State:
@@ -13,6 +14,12 @@ class State:
         self.column = column
         self.direction = direction
 
+    # def __eq__(self, other):
+    #     if not isinstance(other, State):
+    #         # don't attempt to compare against unrelated types
+    #         return NotImplemented
+    #     return self.row == other.row and self.column == other.column and self.direction == other.direction
+
 
 class Node:
     def __init__(self, state: State, parent: Node = None, action: Action = None):
@@ -20,6 +27,12 @@ class Node:
         self.parent = parent
         self.action = action
 
+    # def __eq__(self, other):
+    #     if not isinstance(other, Node):
+    #         # don't attempt to compare against unrelated types
+    #         return NotImplemented
+    #     return self.state == other.state and self.parent == other.parent and self.action == other.action
+
 
 def goal_test(state: State):
     if (state.row, state.column) == GOAL:
@@ -27,26 +40,32 @@ def goal_test(state: State):
     return False
 
 
-# TODO: depends od Agent Class (rotate/go implementation)
+def get_successors(state: State, minefield: Minefield):
-def get_successors(state: State):
     successors = list()
 
-    # state_left = get Agent State after rotate_left()
+    state_left = State(state.row, state.column, state.direction.previous())
-    # successors.add("rotate_left", state_left)
+    successors.append((Action.ROTATE_LEFT, state_left))
 
-    # state_right = get Agent State after rotate_right()
+    state_right = State(state.row, state.column, state.direction.next())
-    # successors.add("rotate_right", state_right)
+    successors.append((Action.ROTATE_RIGHT, state_right))
 
-    # target = get Agent position after go()
+    target = go(state.row, state.column, state.direction)
-    # if is_valid_move(target):
+
-    # state_go = Agent State after go()
+    if minefield.is_valid_move(target[0], target[1]):
-    # successors.add("go", state_go)
+        state_go = State(target[0], target[1], state.direction)
+        successors.append((Action.GO, state_go))
 
     return successors
 
 
-def graphsearch(fringe: List[Node], explored: Set[Node], initial_state: State):
+def graphsearch(initial_state: State, minefield: Minefield, fringe: List[Node] = None, explored: List[Node] = None):
+    # fringe and explored initialization
+    if fringe is None:
+        fringe = list()
+    if explored is None:
+        explored = list()
 
+    # root Node
     fringe.append(Node(initial_state))
 
     while True:
@@ -54,11 +73,12 @@ def graphsearch(fringe: List[Node], explored: Set[Node], initial_state: State):
         if not len(fringe):
             return False
 
+        # get first element from fringe
         element = fringe.pop(0)
 
-        # solution found, prepare and return actions sequence
+        # if solution was found, prepare and return actions sequence
         if goal_test(element.state):
-            actions_sequence = list()
+            actions_sequence = [element.action]
             parent = element.parent
 
             while parent is not None:
@@ -67,20 +87,41 @@ def graphsearch(fringe: List[Node], explored: Set[Node], initial_state: State):
                     actions_sequence.append(parent.action)
                 parent = parent.parent
 
-            return actions_sequence.reverse()
+            actions_sequence.reverse()
+            return actions_sequence
 
-        explored.add(element)
+        # add current node to explored (prevents infinite cycles)
+        explored.append(element)
 
-        for successor in get_successors(element.state):
+        # loop through every possible next action
+        for successor in get_successors(element.state, minefield):
             # either me or the pseudocode is dumb
             # somebody has to verify it
             fringe_states = [el.state for el in fringe]
             explored_states = [el.state for el in explored]
 
-            if successor.state not in fringe_states and \
+            # make sure not to fall into a cycle
-                    successor.state not in explored_states:
+            if successor[1] not in fringe_states and \
+                    successor[1] not in explored_states:
 
-                new_node = Node(state=successor.state,
+                # create new Node and add it at the end of fringe
+                new_node = Node(state=successor[1],
                                 parent=element,
-                                action=successor.action)
+                                action=successor[0])
                 fringe.append(new_node)
+
+
+# TEMPORARY METHOD
+def go(row, column, direction):
+    target = tuple()
+
+    if direction == Direction.RIGHT:
+        target = row, column + 1
+    elif direction == Direction.LEFT:
+        target = row, column - 1
+    elif direction == Direction.UP:
+        target = row - 1, column
+    elif direction == Direction.DOWN:
+        target = row + 1, column
+
+    return target