A process of adjusting game objects position after collision.
0
votes
1answer
45 views
collision between two objects
to test collision i am using intersect function.
if(this.getBounds_ball().intersects(this.getBounds_rect()))
{
but the problem is i dont know how to test where the ball is collision from.
i was ...
0
votes
2answers
43 views
collision test between ball and rect
need help with collision between ball and rect. i dont know how to test if ball hit the rec from top, bottom, right or left.
x = ball x
y = ball y
radius = ball width and height
rx = rect x
ry = rect ...
-1
votes
1answer
92 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
2answers
82 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 ...
-1
votes
0answers
46 views
Faking collisions between sizable amount of objects?
I'm working on a RTS mod for a game made in an older version of the torque game engine.
I have a few objects that collide with everything but each other (which is extremely inconvenient and I can't do ...
3
votes
1answer
68 views
Collision Response: game character vs. density function
Introduction
I am working on my own "novelty" game-engine project, where the world is represented by a continuous density function. It has only one interface, a function that returns the density at a ...
2
votes
1answer
91 views
Collision Resolution: How to avoid Interpenetration/Tunneling Caused by Prior Collision Handling?
My game processes world collisions followed by entity collisions. The problem here is that entities can break through walls the next frame when world checks are run again as a result of the prior ...
2
votes
1answer
155 views
Get intersected volume of two planes in 3D
I'm working on AABB - AABB collision response and I'm having trouble figuring one part out. My situation is as follows (see image).
I have a player AABB (blue) and an object which collides (brown). ...
1
vote
1answer
157 views
How to detect screen boundary using AndEngine GLES1?
I am using the AnalogOnScreenControl to move my sprite around the screen. I would like to restrict the sprite so it can not move outside the screen boundaries.
I have tried putting a line at the ...
1
vote
1answer
212 views
2D tile-based collisions: using different methods by tile?
I'm trying to write a collision handling method that handles each of the 9 potentially colliding tiles (the player's and the 8 around him) differently according to a "CollisionType" value attached to ...
0
votes
1answer
53 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 ...
2
votes
1answer
229 views
How to calculate collision normal between two AxisAlignedBox's?
I'm writing a physics simulation in Ogre3D and I'm trying to figure out how to calculate the collision normal between two Ogre::AxisAlignedBox's.
I am checking for collisions using the "intersects" ...
12
votes
3answers
545 views
Resolving a collision with forces
In my 2D physics engine, I can detect AABB vs AABB collisions, and resolve them by finding the shortest penetration vector and adding it to the AABB's position.
Doing this "pushes" the first AABB ...
1
vote
1answer
99 views
Slide effect in voxel collisions
I'm making a voxel engine, and I'm trying to figure out the right way to make efficient collisions with a slide response (making the player slide against the wall).
Currently my collisions are pretty ...
2
votes
1answer
135 views
Calculating impulse propagation through a rigid body after a collision
I'm working on a game. I need to work out what the impulse is at different points on a body as a result of a collision.
For example, in the following diagram, if there is a collision that results in ...
1
vote
2answers
113 views
Find the Contact Normal of Rectangle Collision
It seems a lot of people have asked similar questions on this site, and every time it seems like a whole bunch of answers that don't work are given.
Basically, I have two rectangles (AABBs) that ...
2
votes
2answers
68 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 ...
1
vote
1answer
71 views
Confusing with an articles wording on Clamping a Vector2
I have been reading an article on Collision Detection and how to resolve it.
http://www.wildbunny.co.uk/blog/2011/04/20/collision-detection-for-dummies/
In the section describing an AABB vs Circle, ...
0
votes
0answers
107 views
Separating axis theorem implementation flaky minimum translation vector based on triangle orientation
I've implemented some collision detection using separating axis theorem. Works fine for axis-aligned rectangles and two out of four possible right triangle orientations. For some reason when the ...
3
votes
2answers
254 views
XNA 4.0 / C# Collision Response
Okay, this is really starting to annoy me.
First of all, detecting collisions is nice and easy. I have a list of tiles,
and a player. The player and each tile have their own rectangles. (The tiles ...
0
votes
2answers
126 views
Why does this collision detection & resolution code only work for one side?
I am having a bit of trouble with my collision detection. It only works correctly for the right side, meaning, if I enter the tile from any other side, it brings me to the right side.
Here is my ...
2
votes
1answer
111 views
How to handle collision resolution in a top-down car game?
I have a top-down car game which takes place in an arena. The game is very very light on physics, so I'm not actually using a physics engine. The cars' movement is mostly managed by a struct I called ...
4
votes
2answers
129 views
Why is my collision resolution failing on the corners?
I'm tearing my hair out trying to work out how to handle my collision resolution at the corners of the rectangles that I'm colliding with.
The code that I'm working with is:
class Player(object):
...
-1
votes
2answers
139 views
My 2D collision code does not work as expected. How do I fix it?
I have a simple 2D game with a tile-based map. I am new to game development, I followed the LazyFoo tutorials on SDL.
The tiles are in a bmp file, but each tile inside it corresponds to an internal ...
0
votes
0answers
88 views
Simulating smooth movement along a line after calculating a collision containing a restitution of zero in 2D
[for tl;dr see after listing]
//...Code to determine shapes types involved in collision here...
//...Rectangle-Line collision detected.
...
3
votes
1answer
177 views
Collision resolution - Character walking on ascendent ground
I don't know if the solution to this problem is quite straight-foward but I really don't know how to handle collision resolution on a game where the player walks on an ascendent floor which is not ...
0
votes
2answers
134 views
How can I get accurate collision resolution on the corners of rectangles?
I have a working collision system implemented, and it's based on minimum translation vectors. This works fine in most cases except when the minimum translation vector is not actually in the direction ...
2
votes
2answers
134 views
Typical collision detection
I would like to know how is the typical collision detection of most games. For example, you control a character which can move in 2 dimensional directions (except up and down). Now lets asume he walks ...
1
vote
1answer
223 views
How to make a stack stable? Need help for an explicit resting contact scheme (2-dimensional)
Previously, I struggle with the sequential impulse-based method I developed. Thanks to jedediah referring me to this paper, I managed to rebuild the codes and implement the simultaneous impulse based ...
1
vote
1answer
246 views
How do 2D physics engines solve the problem of resolving collisions along tiled walls/floors in non-grid-based worlds?
I've been working on implementing my SAT algorithm which has been coming along well, but I've found that I'm at a wall when it comes to its actual use. There are plenty of questions regarding this ...
0
votes
0answers
96 views
3D physics engine for accurate collision handling on desktop/laptop computers (non-console) [closed]
What are your suggestions for a physics engine that satisfies the following criteria?
Capable of calculating collisions between multiple concave mesh-based colliders
Handles many collisions going ...
4
votes
1answer
179 views
Move penetrating OBB out of another OBB to resolve collision
I'm working on collision resolution for my game.
I just need a good way to get an object out of another object if it gets stuck. In this case a car.
Here is a typical scenario.
The red car is in ...
1
vote
1answer
94 views
Help with Collision Resolution?
I'm trying to learn about physics by trying to make a simplified GTA 2 clone.
My only problem is collision resolution. Everything else works great.
I have a rigid body class and from there cars and ...
7
votes
3answers
368 views
Collision Detection Game Design and Architecture
I've reading some articles about collision detection. My question here is about ideas on the design for it.
Baically I have a C++ game that has a main loop with entities with an update method. Based ...
1
vote
1answer
350 views
2D OBB collision detection, resolving collisions?
I currently use OBBs and I have a vehicle that is a rigid body and some buildings.
Here is my update()
private void update()
{
camera.setPosition((vehicle.getPosition().x * camera.getScale()) - ...
-2
votes
1answer
211 views
XNA 2D vehicle wall collisions
I am attempting to implement collisions for my truck game, where the truck can drive around the world and hit walls surrounding the level and various randomly placed walls within the level. I am able ...
2
votes
0answers
215 views
Circle vs Edge collision detection / resolution
I made a javascript class Ball.js that handles physics interactions betweens balls as well as painting.
In the v1.0, the ball vs ball collision detection and resolution is well handled.
In the next ...
7
votes
4answers
240 views
Need efficient way to keep enemy from getting hit multiple times by same source
My game's a simple 2D one, but this probably applies to many types of scenarios.
Suppose my player has a sword, or a gun that shoots a projectile that can pass through and hit multiple enemies.
...
3
votes
1answer
566 views
Circle-Rectangle collision in a tile map game
I am making a 2D tile map based putt-putt game.
I have collision detection working between the ball and the walls of the map, although when the ball collides at the meeting point between 2 tiles I ...
2
votes
1answer
244 views
Simple (and fast) dices physics
I'm programming a throw of 5 dices in Actionscript 3 + AwayPhysics (BulletPhysics port).
I had a lot of fun tweaking frictions, masses etc. and in the end I found best results with more physics ...
3
votes
3answers
158 views
Collision and Graphics integration
I'm a little confused about the integration between collision and graphics. They both need to share the same position in the world. The most obvious choice is the center of the entity, which is good ...
6
votes
2answers
492 views
How to implement friction in a physics engine based on “Advanced Character Physics”
I have implemented a physics engine based on the concepts in the classic text Advanced Character Physics by Thomas Jakobsen. Friction is only discussed very briefly in the article and Jakobsen himself ...
3
votes
1answer
275 views
2D Motocross physics
I'm looking into making a 2D motocross bike game with plausible physics.
It should look like this:
For a first try, I've created only the player (a motocross driver) and the map (consisting of ...
3
votes
2answers
556 views
Circle-Rectangle collision resolution
I have a non axis aligned rectangle, like a car, in my game. I have to check and resolve the collision between the rectangle and circle, which is stationary.
I have found lots of ways to determine ...
0
votes
2answers
281 views
using per pixel collision for an elastic response
I realize this might be open ended ended but curious if I just did some over kill...
I had this
http://xbox.create.msdn.com/en-US/education/catalog/tutorial/collision_2d_perpixel
and i reworked it ...
2
votes
3answers
167 views
Collision organization problems
I just started playing around with c++ and some SFML. I'm going to create a 2D game with top view to test my ability and I came across a very big problem: collision detection and physics. So I see at ...
1
vote
1answer
137 views
How can I resolve collisions at different speeds, depending on the direction?
I have, for all intents and purposes, a Triangle class that objects in my scene can collide with (In actuality, the right side of a parallelogram).
My collision detection and resolution code works ...
2
votes
2answers
231 views
How should I do my collision response?
I'm making a small lockpicking simulator. Obviously I'll need the pick to not pass through the lock, and I'll need the pins to move when you tap or push them with the pick.
Here's what I have so far, ...
4
votes
1answer
1k views
Collision with tile corners/seams in 2D platformer
There seems to be a lot of somewhat related questions answered already, but none I read answered my exact problem.
I have a 2D platformer whose world is made entirely out of tiles that are in a ...
3
votes
2answers
318 views
Collisions between moving ball and polygons
I know this is a very typical problem and that there area a lot of similar questions, but I have been looking for a while and I have not found anything that fits what I want.
I am developing a 2D ...
