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- #Imports
- import kivy
- from kivy.config import Config
- #Set config settings before importing the rest to prevent overwriting
- kivy.require('1.1.1')
- Config.set('graphics', 'width', '1280')
- Config.set('graphics', 'height', '720')
- #Resume imports
- from kivy.app import App
- from kivy.uix.widget import Widget
- from kivy.properties import NumericProperty, ReferenceListProperty, ObjectProperty
- from kivy.vector import Vector
- from kivy.factory import Factory
- from kivy.clock import Clock
- from kivy.core.window import Window
- from kivy.base import runTouchApp
- from time import sleep
- from random import randint
- from time import sleep
- global player1Hit
- player1Hit = False
- global player2Hit
- player2Hit = False
- #This class is the pongpaddle, instantiated twice... once for player 1 and once for player 2.
- class PongPaddle(Widget):
- #I creat a variable called justHit, so after the NPC hits the ball, i will create a function to return it to the center
- justHit = False
- score = NumericProperty(0)
- #This function is what changes the velosity to be opposite after it hits the paddle
- def bounce_ball(self, ball):
- if self.collide_widget(ball):
- self.justHit = True
- vx, vy = ball.velocity
- offset = (ball.center_y-self.center_y)/(self.height/2)
- bounced = Vector(-1*vx, vy)
- vel = bounced * 1.1
- ball.velocity = vel.x, vel.y + offset
- #This class is instantiated once and it controls the ball, for multiple balls or a higher difficulty I assume I can instantiate it more times
- class PongBall(Widget):
- #Not so sure what this does
- velocity_x = NumericProperty(0)
- velocity_y = NumericProperty(0)
- velocity = ReferenceListProperty(velocity_x, velocity_y)
- def move(self):
- #This is what controls the ball, without it it won't move
- #I believe it works by getting the current balls position, getting the velocity assigned (at the start 10,0), and then adding the current pos to the velocity
- #So if it were 0x to start with, it will get the velocity 10,0, then say 10 + 0 = 0. Now it's at 10x... so 10 x to 10x = 20x... then 20x to 20x = 40x... etc?
- #I'm probably wrong on this
- self.pos = Vector(*self.velocity) + self.pos
- #This class controls the class for the actual portion of the game.. should only be instantiated once
- class PongGame(Widget):
- #create the ball, player1, and player2, inside the .kv file is what instantiates the classes they're related to?
- ball = ObjectProperty(None)
- player1 = ObjectProperty(None)
- player2 = ObjectProperty(None)
- #The function to serve the ball, it sets the ball in the center of the screen
- #and then it sets the balls velocity to vel (10, 0)
- #I'm not exactly sure how self.ball.velocity is defined
- def serve_ball(self, vel=(10,0)):
- self.ball.center = self.center
- self.ball.velocity = vel
- def update(self, *args):
- self.ball.move()
- #bounce off paddles
- self.player1.bounce_ball(self.ball)
- self.player2.bounce_ball(self.ball)
- #bounce ball off bottom or top
- if (self.ball.y < self.y) or (self.ball.top > self.top):
- self.ball.velocity_y *= -1
- #ai - impossible to beat
- self.player2.center_y = self.ball.y
- #went off to a side to score point?
- if self.ball.x < self.x - 40:
- self.player2.score += 1
- self.serve_ball(vel=(10,0))
- if self.ball.x > self.width:
- self.player1.score += 1
- self.serve_ball(vel=(-10,0))
- if self.player1.justHit == True:
- print "Player 1 just hit!"
- self.player1.justHit = False
- if self.player2.justHit == True:
- print "Player 2 just hit!"
- self.player2.justHit = False
- #The function which allows us to hold the player and move it with the mouse
- def on_touch_move(self, touch):
- if touch.x < self.width/3:
- self.player1.center_y = touch.y
- #This instantiates the classes as per the .kv file?
- Factory.register("PongBall", PongBall)
- Factory.register("PongPaddle", PongPaddle)
- Factory.register("PongGame", PongGame)
- class PongApp(App):
- def build(self):
- game = PongGame()
- game.serve_ball()
- #This says update game.update every 1/300 seconds
- Clock.schedule_interval(game.update, 1.0/300.0)
- return game
- if __name__ in ('__android__', '__main__'):
- PongApp().run()
- -------------------------------------------------------pong.kv file------------------------------------
- #:kivy 1.0.9
- <PongBall>:
- size: 50, 50
- canvas:
- Ellipse:
- source:"ball.png"
- pos: self.pos
- size: self.size
- <PongPaddle>:
- size: 25, 200
- color: 1, 0.8, 0.3
- canvas:
- Rectangle:
- source:"player1.png"
- pos:self.pos
- size:self.size
- <PongGame>:
- ball: pong_ball
- player1: player_left
- player2: player_right
- canvas:
- Rectangle:
- source:"middle.png"
- pos: self.center_x-25, 0
- size: 50, self.height
- Label:
- font_size: 70
- center_x: root.width / 4
- top: root.top - 50
- text: str(root.player1.score)
- Label:
- font_size: 70
- center_x: root.width * 3 / 4
- top: root.top - 50
- text: str(root.player2.score)
- PongBall:
- id: pong_ball
- center: self.parent.center
- PongPaddle:
- id: player_left
- x: root.x
- center_y: root.center_y
- PongPaddle:
- id: player_right
- x: root.width-self.width
- center_y: root.center_y
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