at Chris: how could i get the ball too collide

with the paddle?

ball.py

@@ -0,0 +1,20 @@
+# ball.py
+class Ball:
+    character = "O"
+
+    def __init__(self, position):
+        self.position = position
+        self.velocity = (1, 1)
+
+    def play_turn(self, game):
+        x, y = self.position
+        vx, vy = self.velocity
+        new_x = x + vx
+        new_y = y + vy
+        board_x, board_y = game.board_size
+        if new_x < 0 or board_x <= new_x:
+            self.velocity = (-vx, vy)
+        elif new_y < 0 or board_y <= new_y:
+            self.velocity = (vx, -vy)
+        else:
+            self.position = (new_x, new_y)

game.py

@@ -0,0 +1,15 @@
+# game.py, version 2
+from retro.game import Game
+from ball import Ball
+from paddle import Paddle
+
+width = 40
+height = 40
+
+ball = Ball((26, 20))
+paddle = Paddle((18, 38))
+agents = [ball, paddle]
+state = {}
+game = Game(agents, state, board_size=(width, height), debug=True)
+game.play()
+

paddle.py

@@ -0,0 +1,47 @@
+# paddle.py
+class PaddlePiece:
+    character = "X"
+    def __init__(self, position):
+        self.position = position
+
+class Paddle:
+    width = 5
+    display = False
+    pieces = []
+
+    def __init__(self, position):
+        self.position = position
+
+    def play_turn(self, game):
+        if not self.pieces:
+            self.create_pieces(game)
+        check_collision()
+
+    def check_collision:
+        x, y = self.position
+        print (retro.game.Game.get_agent_by_name(ball))
+
+    def handle_keystroke(self, keystroke, game):
+        x, y = self.position
+        width, height = game.board_size
+        if keystroke.name == "KEY_LEFT":
+            if 0 < x:
+                self.position = (x-1, y)
+                self.update_piece_positions()
+        if keystroke.name == "KEY_RIGHT":
+            if x + self.width < width:
+                self.position = (x+1, y)
+                self.update_piece_positions()
+
+    def create_pieces(self, game):
+        x, y = self.position
+        self.pieces = []
+        for i in range(self.width):
+            piece = PaddlePiece((x + i, y))
+            self.pieces.append(piece)
+            game.add_agent(piece)
+
+    def update_piece_positions(self):
+        x, y = self.position
+        for i, piece in enumerate(self.pieces):
+            piece.position = (x + i, y)