A process of adjusting game objects position after collision.

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19 views

Collision between a sphere and a mesh(height-map)

I am trying to implement a method that detects the collision between a sphere and a mesh and reflects the vector of speed. I have a method, that detects a collision between a sphere and a triangle and ...
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1answer
69 views

Cocos2d - Physics bodies randomly loosing Velocity along an axis after impact

This just started occurring and seems to randomly happen during, and between, game sessions. A dynamic moving body collides with a static body and instead of bouncing off looses (almost completely) ...
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0answers
18 views

JBullet - Two RigidBodies will not collide

I am adding two ships into my collision world. (The green dots are the collision shape (an ObjectArrayList) that I am passing to the ConvexHullShape) However they don't seem to collide. In fact, ...
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2answers
56 views

How to keep a shape inside a rectangle

So i'm making a game which is based on randomly generated rooms and i need a way to keep the player inside them and make the player glide when he collides with the room's bounds. I currently have a ...
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0answers
19 views

SAT MTV collision resolution jittering [on hold]

Edit: I have updated my approach a bit, but now the problem is that if i'm outside a wall i stick to it, basically i get the Desired vector of motion and move there. Also how would i adapt this ...
1
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0answers
23 views

Collision callbacks in a javascript engine [on hold]

I'm making a game engine in javascript for Educational purpose. I already have the collision detection and collision response parts and are working fine, but i want to let the user define his action ...
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1answer
110 views

Changing direction after collision

In the first tutorial for GameMaker (catch the clown), I want to set the direction of the clown after the collision with the wall. I want to do it by pressing the wall object with the mouse (before ...
2
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1answer
205 views

2D Collision Resolution getting stuck on walls

I've been writing this collision detection system using a tutorial from an article I read and I just cannot for the life of me get it to function 100% correctly. Here's the code for starters: ...
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2answers
72 views

Circle-Circle collision resolution

This seems easy but I can't figure it out, when I have one circle(c1) collide with another(c2) I give the c2 circle the heading of c1 and send the c1 circle on the normal vector to the heading (the ...
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0answers
32 views

How can I create a collision like the ball and peg in Peggle?

I'm making a game which requires the same type of collision as Peggle. I know of the 3 main types (elastic, inelastic and perfectly inelastic) but those result in both objects moving after the ...
0
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1answer
341 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 ...
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3answers
120 views

Bringing islands close together programmatically

I generate island/continent maps and I want to make a grand archipelago of sorts where all these islands are located. The problem is that I don't know a smart way to place the islands programmatically ...
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1answer
39 views

How do I calculate force from collision between 2 rigidbodies in 2D?

I have a physics engine based on the Game Physics Engine Development by Ian Millington. In chapter 7.1.1, it provides the formula: V = (pA.Velocity - pB.Velocity) * (pA - pB).normalized where V is ...
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0answers
19 views

How do I find at least the closest penetrating point with SAT? [duplicate]

For more accurate simulations, I want to find the closest point of another polygon to one polygon's center when they collide. Is this possible with the SAT algorithm? Is it a good strategy at all for ...
1
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0answers
24 views

2D Polygon Collision push direction with large polygons

I have a collision detection/resolution implementation that uses the Separating Axis Theorem. Detection and such works perfectly fine, as well as resolution for most objects/shapes in my game. ...
1
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1answer
81 views

Help with Resolving Pixel Perfect Collision

Hi I'm having trouble resolving "Collision detection between axis-aligned bounding box and bitmap (pixel perfect) terrain on a Worms type game". (Read previous question to find more information about ...
0
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1answer
399 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 ...
1
vote
1answer
132 views

Cocos2dx+Chipmunk: Fully elastic collision between moving bodies

I'm using Cocos2dx and the built in Chipmunk physics engine, and currently I've got my PhysicsBodys' materials set up with: Density=0 Restitution=1 Friction=0 in order to get fully elastic ...
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1answer
148 views

Collision detection doesn't register until player sprite jumps

I have implemented a shooting mechanic into my game, and the act of shooting works fine. The shooting work is done in my "game1" class. The issue that arises is when I incorporate collision detection ...
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3answers
312 views

How do I resolve a collision of a circle with two rectangle corners?

I'm writing a simple non-physical one-circle-to-many-rectangles collision detector/resolver. For collision detection, I'm using a very common algorithm, and it's working pretty well. For collision ...
0
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1answer
37 views

How to prevent constant adjustments form collision?

I'm try to clone a popular 2D platformer as a project. For both the player character and enemies, whenever I constantly check to see if they are walking on the ground or floating platforms, they ...
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2answers
80 views

Defining collision response in an Entity system

I'm building a really simple top-down 2d shooter which uses an Entity Component pattern. I've added several different entities to a level and given them different collision groups. I have an entity ...
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1answer
53 views

How to implement this collision detection function?

I would like to know how to implement this collision detection function, but I'm not even sure what it's called. The input shapes are 2D convex polygons, with an optional "rounding radius": imagine ...
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3answers
218 views

Collision between AABB and Circle

I'm programming collision systems for a 2D game engine. The idea is that different systems can interact with each other. So one of the cases would be check collisions between axis aligned bounding box ...
0
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1answer
90 views

How to resolse collision between moving and static AABB?

What I have is a map represented as list of Rectangles and player's rectangle. Also I have function to determine depth of the collision: Point TestAABBAABB(Rectangle a, Rectangle b) { ...
2
votes
1answer
44 views

Collision detection between axis-aligned bounding box and bitmap (pixel perfect) terrain

Working on a Worms-type game, I have my objects in bounding boxes and they sit on the pixel terrain. Currently I am able to successfully do the collision detection for objects when they enter the ...
1
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1answer
448 views

Collision/Intersection of (2D) Ray to Line Segment

Given a ray (r0, r1) and a line segment (a, b), I need to calculate the normal of the line segment based on the direction of the ray. For example, in the following picture: The correct normal given ...
0
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1answer
67 views

How do I get realistic sliding contact between objects in a voxel grid?

I have a 3D grid of voxels in my game. Entities walk around with simple physics that represents them as an axis aligned bounding box with velocity, mass and acceleration. The way I'm doing collision ...
0
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1answer
89 views

Unity: Smooth collision

I'm making a topdown 2D RPG in Unity. All moveable objects have Rigidbody2D-components with gravity set to 0, linear drag set to 5 and different masses. Walls are stationary boxes with BoxCollider2Ds. ...
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0answers
33 views

PhysicsJS object falls through the world

I have a problem while using PhysicsJS when it comes to collisions. I created a physics world, an object and applied gravity. I put the object at a certain position, it falls down because of the ...
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2answers
68 views

Stuttering Character When Colliding With Wall XNA 4.0 Help!

I'm trying to make a platformer game without tiles. I've made a collision handler to handle collision between Player and Stage(platform)and a collision checker, here's the code: public void ...
0
votes
1answer
110 views

How do I calculate the bounce vector of a ball hitting the starting point of a segment?

I have a ball (with parameters x, y, radius) that travels on the screen (with vectors directionX directionY) and can collide with a segment with random slope (with parameters startX, startY, stopX, ...
0
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1answer
54 views

Array Rectangle Collision Handling Inconsistency XNA 4.0 [closed]

I made a simple collision detection prototype.Here's the code for the Player class's collision handler: public void handleCollision(GameObject OtherObject) { ...
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2answers
82 views

Unity2D Best way to determine degrees between two colliding entities?

I'm trying to determine the collision-direction between two objects. I'll be using this for various things such as creating blood-entities in a specific direction proportional to where the other ...
2
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1answer
463 views

How do I avoid causing more collisions, when resolving multiple AABB collisions?

I have a lot of AABB bouncing on the screen. Doing collision/response between 2 AABB is fairly easy, but how do you handle this when you can be pulling AABB's apart but making them getting into ...
3
votes
2answers
806 views

How do I avoid 3D AABB collision response getting stuck at block edges?

I want the player to be able to slide along cubes, but without getting caught at the seam between 2 adjacent cubes. I've gotten it so that I can do x collision, with sliding, and y, and z, but I ...
4
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1answer
1k views

How do I make a collision between AABBs slide?

I have a room with objects inside. Each object has it's own AABB. I know how to check for collisions between the objects with an AABB-AABB intersection. How do I calculate an appropriate collision ...
5
votes
2answers
2k views

How do I resolve a collision of a rectangle with two rectangular tiles at once?

I am having some problems with collision detection between a player and the environment in a tile-based game. I have a player objects, Tiles and what I call MapObjects. The tiles are all 16×16. The ...
31
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6answers
2k views

Hexagon collision detection for fast moving objects?

A object has a position and a speed vector. Usually only the position is used to check if two objects collide, this is problematic for very fast moving objects as it can happen that the object moves ...
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0answers
151 views

2D AABB vs AABB side of collision and collision depth

I realize there have been a multitude of questions involving 2D AABB vs AABB collision, but the questions and responses always avoid the simple questions that make it difficult. To keep things ...
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1answer
111 views

2D Collision : detection and design [duplicate]

So, listening to this very smart piece of advice, I've already completed a basic Tetris game. Moving on, I started a small breakout. But suddenly : a nightmare came. Collisions. Since I've been ...
0
votes
1answer
90 views

c++ - collision detection/resolution clipping

I'm trying to implement a collision detection system, and it is working for the most part, no overlapping (or at most very little overlapping) of characters, and wall collisions. The problem is that i ...
0
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2answers
408 views

Collision detection with multiple polygons simultaneously

I've written a collision system which detects/resolves collisions between a rectangular player and a convex polygon world using the Separating Axis Theorem. This scheme works fine when the player is ...
1
vote
1answer
212 views

AABB swept collision response with voxel world

I followed this tutorial: link and I was able to make it work with 3d voxel world collisions. But the problem I have is with collision response. I want to make player slide against the wall if he is ...
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0answers
53 views

Manual response when 2 shapes made of rectangular volumes collide

I have 2 compound objects made of rectangular blocks. One of them (the one that is moving) has a script that listens to OnTrigger callbacks. What I need is to position the moving compound object on ...
1
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1answer
97 views

Triangular Mesh Collision/ Resolution

I've been trying some different approaches for collision detection and now I want to try to implement simple Mesh-Mesh collision detection for triangular meshes. I'm wondering if I'm on the right ...
0
votes
0answers
123 views

Bullet Physics for Collision Detection and Smooth Response

I'm creating a game using LibGDX, and to prevent the need to spend lots of time writing collision detection code I've decided to make use of Bullet Physics, simply for collision detection and not for ...
0
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0answers
103 views

2D Distance Field as collision handler method

Pixeljunk Shooter has really cool fluid simulation. I found the dev's video explaining what they did. Here I understand that it is particle based simulation Smoothed Particle Hydrodynamic I can ...
0
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0answers
100 views

Separating Axis Theorem contactNormal

I implemented the separating axes theorem as described in "Real time collision detection" by Ericson for my OBB vs OBB collision. Got that working. To continue with my collision response I need more ...
2
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1answer
102 views

My pool balls often jump around when there are two or more balls colliding/touching

I'm working through the book 'Introduction to Game Physics with Box2D' and I've created a little pool game with the example code. Despite the name, there is NO box 2D used in this particular exercise. ...