The determination of whether or not two or more entities make contact with each other during gameplay.
0
votes
1answer
86 views
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 ...
1
vote
1answer
142 views
Understanding Box2d Restitution & Bouncing
I'm currently trying to implement basketball bouncing into my game using Box2d (jBox2d technically), but I'm a bit confused about restitution.
While trying to create the ball in the testbed first, ...
1
vote
1answer
104 views
relationship between eye height and collision body in UDK
We are using the UDK in a research lab setting so we must understand exactly how tall users feel in the virtual world (camera position). By Googling and digging through code, we have discovered the ...
6
votes
4answers
980 views
Implementing 2D CSG (for collision shapes)?
Are there any simple (or well documented) algorithms for basic CSG operations on 2D polygons?
I'm looking for a way to 'add' a number of overlapping 2D collision shapes. These may be convex or ...
1
vote
3answers
518 views
Collision Detection Problems
So I'm making a 2D tile based game but I can't quite get the collisions working properly. I've taken the code from the Platformer Sample and implemented it into my game as seen below.
One problem I'm ...
5
votes
3answers
502 views
Best system for creating a 2d racing track
I am working a 2D racing game and I'm trying to figure out what is the best way to define the track.
At the very least, I need to be able to create a closed circuit with any amount of turns at any ...
4
votes
1answer
126 views
Automatically generate low detail collision meshes
I lately integrated Bullet Physics into my little game engine, but for now I only use basic shapes as spheres or boxes for collision checks. For more realistic physics I need collision meshes for all ...
0
votes
0answers
43 views
Android: Switch(swipe) places on two images [closed]
I have two images next to each other and I want to switch their places with a swipe. I made collision detection but I don't now how to swipe and change their positions.
I'm really new at this, so ...
-7
votes
1answer
56 views
0
votes
1answer
105 views
Recommended collision response needed [closed]
In my game, I have
Player class
Enemy class
Wall class
GameComponents class ( Which is the base class for Player, Enemy and Wall)
The rules are
Enemy chase Player, if collided with Walls, ...
4
votes
3answers
161 views
Fast method of detecting whether point is inside mesh
I'm trying to construct a 3d object from a large number of particles. I think this is called BVH (Bounding volume hierarchy). I figured the best way is to draw the particles inside the mesh, then let ...
0
votes
1answer
99 views
Help with AABB collision detection [closed]
making my first attempts at implementing AABB collision. I got it to work...kinda. I've run into an odd issue I cant seem to fix.
Basically when the objects overlap, I push one out. The pushing part ...
1
vote
1answer
123 views
Object Detection
I'm building a collision system for my 2D game, broadphasing (sweep and prone + pair detection) works. But I don't know how to separate pickup objects, tiles and the player from each other.
My ...
2
votes
1answer
116 views
How to do 2D Raycasting on a slope
I have a 2d platformer game where my slope can be set at any angle, so I've setup a middle raycast that points to the ground onto the player to handle the collision. This works perfectly fine on a ...
3
votes
2answers
240 views
How Does Ultima 7 manage different floors in 2d
In U7, you can move among floors without the function "tranport" the player to another place, as for example the first ff ones.
How can it tell whenever the character is moving from floor z to ...
0
votes
2answers
149 views
3d to 2d Collision
I have a 3d model which rotates around my screen, it's always on the Z axis = 0 where everything of my 2d images are. My 2d images fly out of the center and get bigger to give the view as getting ...
1
vote
3answers
675 views
Actionscript 3: Which side of object is hit?
I have a two objects colliding with each other. I am testing for the collision with if(ob1.hitTestObject(ob2)){//do something }. Is there a way to determine which side of the object was hit, i.e. if ...
1
vote
3answers
207 views
Whats an elegant implementation for 2D collision detection in a block based game?
to make things clear, i do not want to know HOW to implement collision detection mathematically. What i am looking for is an elegant way to check for collisions without having to manage seperate lists ...
3
votes
2answers
72 views
Sperating axis test glitch help
I'm working on a pretty basic 2d platformer and I'm wondering if I could get advice on an issue I've run into. To keep collision detection simple I'm using AABBs and separating axis tests for ...
1
vote
1answer
139 views
How can I make it so that my player object doesn't penetrate world collision when I'm holding down movement keys in that direction?
Right now I have a player object and an obstacle, both with bounding box rectangles around them. The issue is that when my player runs into this obstacle, as long as I'm holding down the movement key, ...
2
votes
1answer
165 views
RK4 integration and Continuous Collision Detection
I'm using this method to detect collision between two AABBs. The algorithm is simple, fast and works great. It uses the relative velocity between the two objects to calculate TOI. This works fine with ...
0
votes
0answers
59 views
How to manage multiple objects for a tile based game for collision?
So I'm making the tile-based 2D sandbox platformer...thing to get an idea of how to manage different elements of coding games.
Currently I'm at the point where my collision system works fine for a ...
2
votes
3answers
657 views
-1
votes
2answers
132 views
Collisions and camera tilt in XNA C# 3D Game
I am working on a game programming class project and need some help. I cannot find a good tutorial on how to get these 3 frictionless spheres to collide with each-other, the surface and the walls of ...
2
votes
4answers
2k views
2D Collision in Canvas - Balls Overlapping When Velocity is High
I am doing a simple experiment in canvas using Javascript in which some balls will be thrown on the screen with some initial velocity and then they will bounce on colliding with each other or with the ...
6
votes
2answers
153 views
Determining which line to collide with
I am making a platformer, where my player is represented as a circle and the ground is represented as lines. The actual collision detection and resolving works, it's just an edge case I can't find a ...
2
votes
3answers
350 views
Pong collision detection
I am making Pong... again. Anyway, the collision detection. In the past, I had gotten it working, but it used a bunch of globals, and other nasty things. This time, I am trying it where I have a ...
-1
votes
2answers
98 views
Jittery effects with collisions [closed]
I have been having some problems with my coding lately. I am trying to create a platform-based game and I have been having some troubles.
A friend of mine said that some update functions are out of ...
2
votes
2answers
128 views
Collision detection against large arbitrarily shaped textures
What is the most effecient way to do collision detection on strangely shaped textures in XNA? Here is an example texture:
As you can see, it is far from a perfect square. I want the player to ...
2
votes
3answers
242 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 ...
1
vote
1answer
276 views
UML Class Diagrams for 2D platformer Games? [closed]
I have to develop a small arcade game in C++ for a college assignment using a 2D Game Engine my teacher coded. What would be the best way to make a UML class diagram for it? It's very basic stuff but ...
1
vote
4answers
3k views
How do I detect pixel-level collision using andEngine?
I'm developing a game for Android using andEngine, and I need to detect collisions only when two objects visually collide (not in blank space of the image). In J2ME, I'm able to do that using ...
0
votes
2answers
1k views
Pixel perfect collision detection between sprite and animated sprite
I am trying to make a collision between a sprite and an animated sprite. The animated sprite is the main character of the game. The problem I am facing is that when another sprite collides with the ...
4
votes
5answers
443 views
Collision detection performance problem
Using python and pygame I've built a collision detection system according to the instructions in this YouTube tutorial.
This is updated 40 times per second and controls movement and collision ...
2
votes
3answers
207 views
How should I calculate the new angle/direction of my ball hitting a wall? [duplicate]
I'm building a Pong game and I am stuck at how the ball should bounce when hitting a horizontal wall.
I tried a few methods but none seems to work.
So far I have an update method, which is called ...
0
votes
1answer
71 views
How do I check for non tilted 2D rectangle collision?
I'm trying to find out how to check collision with different rectangles. Now the cubes I have have a x, y, height, and width to them.
So it might look like this on the screen:
And not like this:
...
-1
votes
1answer
120 views
Help with tile-based collision [closed]
I've been working on a 2D platformer using Flash. I've managed to get the collision detection working, but its not exactly perfect. Below is the code I'm using
//Get the speed of the player
...
0
votes
3answers
3k views
2D games on Unity and collision detection performance
I'm developing a 2D game for the iOS platform. I have seen a lot of packages on asset store that makes 2D asset creation for unity easier.
I have narrowed my selection to just 2, 2d toolkit and ex2d. ...
-1
votes
1answer
121 views
Pixel perfect collisions for platforms
i'm trying to do a pixel perfect collision but i don't know how to handle collisions when there is a jump . Here i have one image of a sample map:
But maybe I've done a bad supposing all pixel like ...
-1
votes
1answer
84 views
GameTimer too fast, Objects staying intersected and rand not returning value inbetweem min and max [closed]
So I'm developing a game called PongBreakout in c++ using a game engine i got from uni (when i was there..)
I've got a few problems with my game that i'm struggling to fix and need some help to figure ...
0
votes
1answer
72 views
Gravity/collision problems: models jumping
I'm pretty new to Unity3D game engine and game development, so don't judge me strictly. I import a model of the rail track, add rigid body component (with mass 1 and use gravity flag) and box collider ...
0
votes
0answers
97 views
How to predict encounters between a ship and a body's sphere of influence in 2D
Long time listener, first time caller. I'm making a little hobby game in XNA, its about transport ships in space, analogous to container ships at sea. There are to be AI ships and player controlled ...
0
votes
1answer
118 views
Collision detection optimization for a top down shooter
I'm relatively new to game development and have been trying to learn how collision detection is coded. I mostly work with Actionscript 3, but I'm learning C++ on the side.
I've been wondering how ...
0
votes
0answers
245 views
How to do collision detection in 3D using bounding boxes?
I am using c++ in visual studio 2010 with opengl. I am trying to make a programme that has 2 boxes that are able to be stacked on top of each other but I am having some trouble with the collision ...
-1
votes
1answer
216 views
Unity: OnCollisionEnter not called
I created a sphere object, added a rigidbody component (no kinematics) and attached a script to it like this:
function Update () {
}
function OnCollisionEnter(collision : Collision) {
...
0
votes
0answers
116 views
Check if Pawn is colliding with anything (UDK)
I am new to UDK, so bare with me. I have a pawn that is going to be thrown in the air quite a bit, or will be hovering (custom code based on changing velocity).
I am trying to detect whether the pawn ...
5
votes
6answers
241 views
How do I calculate distance from a point to a rectangle?
I have a 2D rectangle with x, y position, height and width, and a randomly positioned point nearby.
Is there a way to check if this point might collide with the rectangle if it is closer than a ...
-1
votes
2answers
98 views
Tile Based Collision Checking In Java?
I have my map stored in 2 arrays:
Tiles : Tile names
TileTypes : SOLID or BASIC
I want to be able to walk through BASIC Tiles (Like ground tiles).
But not the SOLID Tiles (Like wall tiles).
I ...
10
votes
3answers
332 views
How to implement collision detection of portals?
For example, take this scenario (excuse my horrible drawing skills):
This is based on "Portal", where the stickman is going through the blue portal (which is linked to the red portal), but there is ...
1
vote
1answer
140 views
Application design for specific points on image
Hi guys I am starting a simple hobby app in Unity, its a 2D app, which have some alphabets like A,B,C..Z (images) . There ll be specific paths where user touch one by one to complete drawing the ...
