Hey, I'm currently looking for various methods of implementing collision response in 2D video games, something similar to this tutorial Metanet has: N Tutorial I'm looking to implement something in XNA, but any language would be fine. I'm more interested in implementing programmatically than actual theory. I'd prefer more beginner frien...
Hello, I'm looking to use a physics engine for a 3D mobile game that I'm working on. I'd like to use a library that supports fixed point math and preferably coded in C++. Any recommendations? ...
I am trying to figure out the collision physics for a top-down racing game in Flash / AS3. I am currently using the hitTestPoint method for detecting collisions, but I don't know how to apply a decent physics method to bounce a vehicle off of a wall that it hits. Does anyone have any ideas or perhaps be able to point me in the right di...
Hi there If my X co-ordinates increment every time a frame is drawn, what formula can I employ from the math library in order to have the Y co-ordinate moving around the circumference of a circle frame by frame, creating the illusion of an orbiting object around a continuously moving central point? I have seen it may involve sin or cos...
For example in Peggle or Apple Jack, the user can move around a curve showing where the ball (or the washing machine / panda or whatever) is about to go before the user has requested that the projectile is launched. I know i need to use an equation to plot the points but I'm no mathematician (anymore :(). Can anybody be so kind as to p...
1- let's say there is a box on the screen and as soon as it gets hit by another box it suppose to move. How can i detect (getting hit) on my box object? Is it a good idea to use an nstimer which runs every 0.1 seconds and looking for the location of other objects around itself? 2- What is the best way to display simple 2d animations? ...
I'm making a game which you can see here, if you are on Windows or Linux: http://insertnamehere.org/birdsofprey/ If you click and hold your mouse on a bird, you can see I'm just swinging the bird back and forth in pendulum motion. I would like to, instead, implement a more realistic motion, where the movement of your mouse affects the s...
My scene has a number of stacks of dynamic objects. When the simulation starts, it takes a while for these to "resolve" before they become sleeping islands. This affects performance significantly for the first few seconds. Are there techniques for arranging stacks so that they immediately sleep? I'm using PhysX. ...
I'm very new to game development (iPhone/iPad specifically, if that matters at all) and am having a tough time with working with the physics part of animation. Specifically I'm trying to give several balls (circular UIImageView or CG circles) physical properties (gravity, weight, friction, etc). Are there any really good tutorials on ge...
I'm working on a 3D tile based game and I'm using AABB collision detection. For every cube that the player is intersecting, I find the axis along which the player is intersecting the cube the least, and push the player out of the cube along that axis. Depending on the order that the cubes are checked in, this can cause problems when sli...
Hello, I have been experimenting with the box2D sample project within cocos2D for the iPhone and am wondering if box2D is the appropriate engine to use to make a moving object "stick" to a stationary object when the moving object is finished moving in a certain direction. Here is a simplification of what I am trying to achieve: I hav...
As a hobby, I'm developing a 2D game. I've got some basic collision detection implemented using a separating axis method. When two objects collide, I project one of them out of collision along the axis that has the least amount of overlap. The problem I'm encountering is that when an object is moving fairly quickly the axis that has the...
I'm working on a 2D physics engine for a game. I have gravity and masses working, using a simple iterative approach (that I know I'll have to upgrade eventually); I can push the masses around manually and watch them move and it all works as I'd expect. Right now I'm trying to set up the game world in advance with a satellite in a simple...
I have a particle system with X particles. Each particle tests for collision with other particles. This gives X*X = X^2 collision tests per frame. For 60f/s, this corresponds to 60*X^2 collision detection per second. What is the best technological approach for these intensive calculations? Should I use F#, C, C++ or C#, or something els...
I'm trying to simulate a rollercoaster game with ActionScript 3, but i don't know exactly if I should use a 2d engine (like Box2d) or do it from scratch. For any of those I would like to see some code example. Any ideas, pointers, suggestions... Thanks in advance! ...