Pygame - Different sided collision question!

Posted by Alex Lockwood on Stack Overflow See other posts from Stack Overflow or by Alex Lockwood
Published on 2009-04-30T23:58:46Z Indexed on 2010/06/08 10:02 UTC
Read the original article Hit count: 208

Filed under:

collision-detection

|

pygame

Hi there everyone!
I'm making a Pygame of, basically, "Breakout".
I'm using collisions, and want a simple way to have different bounce effects of the different sides of one rectangle.
What I currently have for the ball-to-bat collision is this:
"dot" = ball; "bat" = bat; so you all understand.

if dot.rect.colliderect(bat.rect):<br>
 dot.dy *= -1

I'd like something that interacts with each side, so could reverse the self.dx value of the ball when it hits the side of the bat, and only reversing the self.dy value when it strikes the top.

Thanks!!! :D

© Stack Overflow or respective owner

Related posts about collision-detection

Collision detection with curves

as seen on Game Development - Search for 'Game Development'
I'm working on a 2D game in which I would like to do collision detection between a moving circle and some kind of static curves (maybe Bezier curves). Currently my game features only straight lines as the static geometry and I'm doing the collision detection by calculating the distance from the circle… >>> More
Need some advice regarding collision detection with the sprite changing its width and height

as seen on Game Development - Search for 'Game Development'
So I'm messing around with collision detection in my tile-based game and everything works fine and dandy using this method. However, now I am trying to implement sprite sheets so my character can have a walking and jumping animation. For one, I'd like to to be able to have each frame of variable… >>> More
Collision Detection - Java - Rectangle

as seen on Stack Overflow - Search for 'Stack Overflow'
I would like to know if this is a good idea that conforms to best practices that does not lead to obscenely confusing code or major performance hit(s): Make my own Collision detection class that extends Rectangle class. Then when instantiating that object doing something such as Collision col =… >>> More
Collision Detection for Actionscript 3

as seen on Stack Overflow - Search for 'Stack Overflow'
Well, I was searching for a simple collision detection function for as3, I found Collision Detection Kit, but it is too complicated, I just want a damn function that I give 2 objects as paramenters and that's it. I would like to know where can I find a pixel-perfect collision detection function (The… >>> More
The Maths for 2D Collision Detection between an OBB and a Circle

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm creating a 2D game and want to test for collision between an OBB (Oriented Bounding Box) and a Circle. I'm unsure of the maths and code to do this. I'm creating the game in c++ and opengl. >>> More

Related posts about pygame

Add collison detection to enemy sprites?

as seen on Game Development - Search for 'Game Development'
i'd like to add the same collision detection used by the player sprite to the enemy sprites or 'creeps' ive added all the relevant code I can see yet collisons are still not being detected and handled, please find below the class, I have no idea what is wrong currently, the list of walls to collide… >>> More
pygame double buffering

as seen on Game Development - Search for 'Game Development'
I am trying to use double buffering in pygame. What I'm trying to do is display a red then green screen, and switch from one to the other. Unfortunately, all I have is a black screen. I looked through many sites, but have been unable to find a solution. Any help would be appreciated. import pygame… >>> More
Help getting frame rate (fps) up in Python + Pygame

as seen on Stack Overflow - Search for 'Stack Overflow'
I am working on a little card-swapping world-travel game that I sort of envision as a cross between Bejeweled and the 10 Days geography board games. So far the coding has been going okay, but the frame rate is pretty bad... currently I'm getting low 20's on my Core 2 Duo. This is a problem since I'm… >>> More
Getting an Error Trying to Create an Object in Python

as seen on Stack Overflow - Search for 'Stack Overflow'
I am trying to create an object from a class in python but I am getting an Error, "e_tank = EnemyTank() TypeError: 'Group' object is not callable" I am not sure what this means, I have tried Google but I couldn't get a clear answer on what is causing this error. Does anyone understand why I am… >>> More
Pygame camera follow in a 2d tile game

as seen on Stack Overflow - Search for 'Stack Overflow'
import pygame, sys from pygame.locals import * pygame.init() size = width, height = 480,320 screen = pygame.display.set_mode(size) r = 0 bif = pygame.image.load("map5.png") pygame.display.set_caption("Pygame 2D RPG !") x,y=0,0 movex, movey=0,0 character="boy.png" player=pygame.image… >>> More