Game development software based on the Python programming language.

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Collision in PyGame for spinning rectangular object.touching circles

I'm creating a variation of Pong. One of the differences is that I use a rectangular structure as the object which is being bounced around, and I use circles as paddles. So far, all the collision ...
3
votes
1answer
124 views

Pathfiding for groups of agents

How can we refine this path search method to make group movement more elegant? I'm trying to make a RTS-style game, using a 2d tiled gameworld. I have implemented an A* pathfinding algorithm which ...
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1answer
973 views

Pygame 2D Scrolling Map

I have currently a pygame program that stores tiles in a 2d list like [[1,1,1] [1,1,1] [1,1,1]] where the 1 is a tile object. I have the character centered in the middle of the screen, and I am ...
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2answers
243 views

How to implement rectangle selection?

I don't know if there is another term for it, but I mean this: You hold down a mouse button. A rectangle forms when you move the mouse around. The units inside the box get selected when you let go of ...
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3answers
2k views

smooth movement pygame

Hello im trying to learn more about smoother movement in games. I have created a little program to hopefully help me understand this. As far as i can tell i am suppose to track time, and update ...
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1answer
260 views

How do I support animation with frames of different sizes?

I'm trying to create a simple top-view 2D rpg, in the style of Zelda and Secret of Mana, using PyGame. I've managed to make the beginnings of a game, with an animated character walking around. ...
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2answers
330 views

Pygame's rotation methods have crippling issues, but is it me or Python's pygame?

http://www.youtube.com/watch?v=lNJFxvR6ex8&feature=youtu.be On rotate and rotozoom, can't find fixes on these on the internet, anywhere. Basically, the video is showing 4 things in this order: 1. ...
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2answers
765 views

Pygame set_colorkey transparency issues

I'm having a strange issue that I cannot seem to remedy. I am doing some prototyping with Pygame on a desktop running windows and a laptop running OS X. Both are running python v2.7.3 (installed via ...
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1answer
93 views

When to use pygame.sprite.GroupSingle?

I'm doing a game in which i have a ball which is controlled by the keyboard and the goal is to get is out of a maze without touching the walls. I've added my ball sprite to GroupSprite vehicle = ...
3
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1answer
335 views

Meaning of offset in pygame Mask.overlap methods

I have a situation in which two rectangles collide, and I have to detect how much did they collide so so I can redraw the objects in a way that they are only touching each others edges. It's a ...
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2answers
153 views

How do I implement unit selection in this program?

I'm trying to implement unit selection on a large, scrollable surface. # Arbitrary values for window size self.w, self.h = 1600, 900 # Game world surface, everything gets blitted to this, which is ...
3
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1answer
305 views

Pygame performance issue for many images

I've made a script for generating a game world based off of image pixel data. Trying to make a python map editor My progress so far has resulted in a program which loads an image and draws sprites ...
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1answer
273 views

Trying to make a python map editor

The program is supposed to read the pixel color values from an image, and use that data as a map for where to place objects in a game world. Getting the color values was easy enough: import numpy ...
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vote
1answer
232 views

Pygame - Change sprite collision Rect

I'm making a platformer in Pygame. One of the sprites I'm using is a flag, and I want to detect if the player collides with the flagpole (just like in Super Mario Bros). The problem is that the image ...
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0answers
66 views

pygame App stops when playing OGG files after building with cx_Freeze

I've built a sample game using pygame and wanted to mess around with packaging it up. I found cx_Freeze which seems to do the trick, except for when it comes to playing OGG files. If I run the app ...
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2answers
575 views

Pygame surfaces and their Rects

I am trying to understand how pygame surfaces work. I am confused about Rect position of Surface object. If I try blit surface on screen at some position then Surface is drawn at right position, but ...
2
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2answers
420 views

How do I detect multiple sprite collisions when there are >10 sprites?

I making a small program to animate the astar algorithm. If you look at the image, there are lots of yellow cars moving around. Those can collide at any moment, could be just one or all of them could ...
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3answers
213 views

Multithreading for a mixed-genre game in Python?

So here's the situation. I'm making a game that mixes two genres; arcade shooter and puzzler. They don't intertwine TOO much; all the interaction that really goes on is that every time an enemy is ...
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1answer
137 views

add collision detection to sprite?

bassically im trying to add collision detection to the sprite below, using the following: self.rect = bounds_rect collide = pygame.sprite.spritecollide(self, wall_list, False) ...
2
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3answers
2k views

Pygame surface rotation, rect rotation or sprite rotation?

i seem to have a conceptual misunderstanding of the surface and rect object in pygame. I currently observe these objects this way: Surface Just the loaded image rect the 'hard' representation ...
2
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2answers
246 views

Grouping surfaces in pygame to get an object with two movement points

I would like to create a simple tank using pygame. One would drive the tank by controlling he velocities of two caterpillar tracks. They should be the two single movement points of the vehicle. I'm ...
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1answer
162 views

Using NumPy arrays as 2D mathematical vectors?

Right now I'm using lists as position, velocity, and acceleration vectors in my game. Is that a better option than using NumPy's arrays (not the standard library's) as vectors (with float data ...
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2answers
338 views

Online scoreboard in Python?

So my friend and I are working on an arcade-style game in Python and Pygame. We're beginning to look at the feasibility of an online leaderboard, given our current programming backgrounds. Such a ...
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3answers
331 views

How can I make smoother upwards/downwards controls in pygame?

This is a loop I use to interpret key events in a python game. # Event Loop for event in pygame.event.get(): if event.type == QUIT: pygame.quit() sys.exit() if event.type == ...
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1answer
481 views

Pygame Tile Based Character movement speed

Thanks for taking the time to read this. Right now I'm making a really basic tile based game. The map is a large amount of 16x16 tiles, and the character image is 16x16 as well. My character has its ...
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1answer
414 views

Pygame Import Error, Python 3.2

I'm having an issue with the Pygame module. I run Python 3.2 and installed the respective Pygame file, but now when I try to import it in the IDLE, it gives me this error: >>> import pygame ...
3
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1answer
176 views

How do I create a selection rectangle?

I have a basic prototype working with health, resources and units. The problem is: How do I select multiple units? I have an idea of making an rectangle which dynamically extends with the mouse ...
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2answers
251 views

what is the best way to use loops to detect events while the main loop is running?

I am making an "game" that has pathfinding using pygame. I am using Astar algo. I have a main loop which draws the whole map. In the loop I check for events. If user press "enter" or "space", random ...
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1answer
229 views

Embedding Pygame to C++ [closed]

If embedding Pygame to C++ to have a game be an executable, is there any extra process I would have to use in order to use Pygame functions when embedding into C++? As opposed to just writing ...
3
votes
1answer
161 views

Find out what word you are hovering mouse over

I want to be able to pop up something when the user hovers over particular words that are on a label in pygame. Can anyone give me a good (or even bad) idea on how to implement this (doesn't have to ...
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1answer
2k views

How do I match and clear sequences 3 adjacent coloured blocks?

I'm making a game with elements of a match-3 puzzler (such as Columns, Bejeweled or Tetris Attack). I don't know where to begin creating an efficient algorithm for matching and clearing. My ...
2
votes
1answer
367 views

Blending colors on Surfaces in PyGame?

So I'm making a game in Python and PyGame. I have aliens and blocks that each adopt one of several colors; rather than make several copies of them in different colors, I plan on making the sprite ...
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3answers
391 views

Complex collisions in pygame

I've seen many tutorials for simple rectangle or circle-based collision detection with pygame. But how can I do more complex collisions with arbitrary polygons? Is the only option pixel-based ...
2
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3answers
391 views

Detecting Units on a Grid

I am making a little turn based strategy game in pygame, that uses a grid system as the main map to hold all the characters and the map layout. (Similar to Fire Emblem, or Advance Wars) I am trying ...
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1answer
352 views

Implementing powerups for my Breakout clone

I'm making a simple Breakout clone in Python that will have very many powerups/powerdowns (so far I came up with 26). Some will affect the paddle (paddle missile, two paddles, short paddle, etc.), ...
3
votes
1answer
169 views

pygame.Rect around circle

I'm trying to make a pong game in pygame, but I can't figure out how to put a ball circle, which I can create with pygame.draw.circle into a pygame.Rect object so i can use the colliderect function to ...
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1answer
193 views

Pixelated and incomplete image when loading with pygame.image.load

This is the image I'm trying to load on the surface, an 40x40 Ubuntu logo: Ans this is how it looks when trying to show the image on the surface via the blit method: I'm trying to load different ...
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1answer
125 views

Drawing over objects occasionally leaving relics behind

I'm drawing a large number of bouncing shapes similar to an old 1990s screensaver. I'm just doing this to study (but not hopework) For some reason my object clearing (simply blitting a black shape ...
2
votes
3answers
451 views

Pygame window becomes unresponsive when I click it

I'm new to programming, python and pygame. This is some code I wrote to draw random colored rectangles on an 800 x 600 canvas. It does what I expected it to do but becomes unresponsive if I click ...
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2answers
247 views

How to detect whether or not a tile is occupied?

I'm using Python 2.7 on Win7x64 with PyGame What is the best way to iterate over all the tiles in the game or screen, efficienty? Ideally I have about 800 tiles, but that is a dynamic number I've ...
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2answers
635 views

Detecting if line crosses rectangle in python. Need speed boost

I am currently writing a top down man vs robot shooter. The game works now, but if I have a decent sized level it runs slowly when you are being chased by robots. While just roaming around it can go ...
6
votes
3answers
817 views

PyGame QIX clone, filling areas

I'm playing around with PyGame. Now I'm trying to implement a QIX clone. I have my game loop, and I can move the player (cursor) on the screen. In QIX, the movment of the player leaves a trace ...
4
votes
1answer
200 views

What is the proper way to maintain the angle of a gun mounted on a car?

So I am making a simple game. I want to put a gun on top of a car. I want to be able to control the angle of the gun. Basically it can go forward all the way so that it is parallel to the ground ...
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1answer
1k views

How can a pygame image be colored?

How can I color a Pygame image surface? I either want to change every pixel that is color A into color B, or else change every pixel into color B. Either works, so long as transparent regions remain ...
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2answers
529 views

Bullet physics in python and pygame

I am programming a 2D sidescroller in python and pygame and am having trouble making a bullet go farther than just farther than the player. The bullet travels straight to the ground after i fire it. ...
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vote
1answer
517 views

Python/PyGame mixer.music playback of OGG file has intermittent clicking sound - how to proceed?

I have a class within my python + pygame game that handles sound - it worked well until I tried use pygame.mixer.music to switch between streaming .ogg music files. The class switches between them on ...
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1answer
375 views

OpenGL: Rotating cannon about non-centre position?

So I have a "cannon" object (basically a long cylinder) and I want to be able to control its angle. The code I have now is: glPushMatrix() glTranslatef(self.position.x,2.5,self.position.z) ...
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1answer
1k views

Pygame import error [closed]

When I installed pygame and tried to run import pygame, I got this error: Traceback (most recent call last): File "<stdin>", line 1, in <module> File ...
8
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1answer
2k views

Doing an SNES Mode 7 (affine transform) effect in pygame

Is there such a thing as a short answer on how to do a Mode 7 / mario kart type effect in pygame? I have googled extensively, all the docs I can come up with are dozens of pages in other languages ...
4
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2answers
605 views

Using Python what is the best way to perform heavy tasks in the background?

I'm generating large amounts of procedural map data on the fly, however my game engine doesn't rely on them to render the scene and I'd like to build it on in the background and pop it into the world ...