Prerequisite: Drawing shapes in Pygame, Introduction to pygame
In this article, we are going to use pygame.Rect.colliderect for adding collision in a shape using Pygame in Python.
We can easily add collisions in Pygame shapes using the colliderect( ). For this, we are going to draw two rectangles then we will check if the rectangles are colliding or not.
Syntax: pygame.Rect.colliderect(rect1, rect2)
Parameters: It will take two rects as its parameters.
Returns: Returns true if any portion of either rectangle overlap.
Example 1: Simple example to add collision in shape at one way
Python3
# Importing the pygame moduleimport pygamefrom pygame.locals import *# Initiate pygame and give permission# to use pygame's functionalitypygame.init()# Create a display surface object# of specific dimensionwindow = pygame.display.set_mode((600, 600))# Creating a new clock object to# track the amount of timeclock = pygame.time.Clock()# Creating a new rect for first objectplayer_rect = Rect(200, 500, 50, 50)# Creating a new rect for second objectplayer_rect2 = Rect(200, 0, 50, 50)# Creating variable for gravitygravity = 4# Creating a boolean variable that# we will use to run the while looprun = True# Creating an infinite loop# to run our gamewhile run: # Setting the framerate to 60fps clock.tick(60) # Adding gravity in player_rect2 player_rect2.bottom += gravity # Checking if player is colliding # with platform or not using the # colliderect() method. # It will return a boolean value collide = pygame.Rect.colliderect(player_rect, p layer_rect2) # If the objects are colliding # then changing the y coordinate if collide: player_rect2.bottom = player_rect.top # Drawing player rect pygame.draw.rect(window, (0, 255, 0), player_rect) # Drawing player rect2 pygame.draw.rect(window, (0, 0, 255), player_rect2) # Updating the display surface pygame.display.update() # Filling the window with white color window.fill((255, 255, 255)) |
Output:
Example 2: Adding collision on both sides
Python3
# Importing the pygame moduleimport pygamefrom pygame.locals import *# Initiate pygame and give permission# to use pygame's functionalitypygame.init()# Create a display surface object# of specific dimensionwindow = pygame.display.set_mode((600, 600))# Creating a new clock object to# track the amount of timeclock = pygame.time.Clock()# Creating a new rect for first objectplayer_rect = Rect(200, 500, 50, 50)# Creating a new rect for second objectplayer_rect2 = Rect(200, 0, 50, 50)# Creating a boolean variable that# we will use to run the while looprun = True# Speed for the objectsspeed_a = 8speed_b = -7# Creating an infinite loop# to run our gamewhile run: # Setting the framerate to 60fps clock.tick(60) # Adding speed in player rects player_rect.bottom += speed_a player_rect2.top += speed_b # Checking if player is colliding # with platform or not using the # colliderect() method. # It will return a boolean value collide = pygame.Rect.colliderect(player_rect, player_rect2) # If the objects are colliding # then changing the speed direction if collide: speed_a *= -1 speed_b *= -1 # Changing the direction if the objects # goes outside the window if player_rect.top<0 or player_rect.bottom > 600: speed_a *= -1 if player_rect2.bottom > 600 or player_rect2.top<0: speed_b *= -1 # Drawing player rect pygame.draw.rect(window, (0, 255, 0), player_rect) # Drawing player rect2 pygame.draw.rect(window, (0, 0, 255), player_rect2) # Updating the display surface pygame.display.update() # Filling the window with white color window.fill((255, 255, 255)) |
Output:
