1
vote
0answers
65 views

How do I implement melee hit boxes for a top-down game?

For a 3D top-down game, how should I handle collision in melee combat? My game has no targeting system, so I can't use a simple distance check between attacker and target. What I am thinking is have ...
1
vote
1answer
80 views

Collision detection across multiple components

I have been reading this article: http://gameprogrammingpatterns.com/component.html which describes how a game object should be constructed out of components. It also encourages the decoupling of ...
0
votes
0answers
46 views

Very strange trigger behavior in Unity2D (4.5)

I am developing 2d platformer and I've faced with a very strange triggers behaviour in Unity. I have made the enemy that can throw objects into main player. So I have made two empty GameObjects with ...
1
vote
0answers
95 views

Collision detection implementation suggestions

I'm working on a simple 2D game involving a rotating octagonal ring where a sphere sprite moves up/down avoiding objects as the ring rotates faster and faster. I'm having a difficult time with the ...
0
votes
1answer
118 views

Getting a pixel of Sprite at the cursor position in Unity

Summary: I've been trying to figure out a way to use simple box colliders as a nice and efficient "first pass" collider. For the "second pass", I want to check that the area clicked has an alpha value ...
0
votes
2answers
79 views

Depth of overlap between circle and rectangle

I have a circle and a rectangle one of the two objects is moving the other is static. How can I prevent them from overlapping each other? For now there is only one thing that I don't know how to ...
2
votes
1answer
65 views

Wall-sliding Collision Response Only Works On One Axis (2D)

"sprite" is the player object, velocity is a Vec2 that tracks movement (is set to -1, 1, or 0 at any given time), each sprite in "sprites" is a wall of the same size as the player (everyone is a block ...
1
vote
1answer
119 views

How to make an object move again after being stopped by collision in Unity?

I have a player object which position is always centered on the main camera's viewport. This object has a Rigidbody 2D, a box and circle collider. The player moves around a level, the level has a ...
0
votes
1answer
792 views

Simple collision detection in Unity 2D

I realise other posts exist with this topic yet none have gone into enough detail for me. I am attempting to create a 2D game in Unity using C# as my scripting language. Basically I have two objects, ...
1
vote
1answer
80 views

Unity Problem with colliding instances of same object

I want to check if object's instance is overlapping with another instance (any spawned object with another spawned object, not necessary the same object). I'm doing this by detecting collisions ...
0
votes
1answer
77 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 ...
1
vote
2answers
73 views

C# - Collision Detection problem with platforms on Monogame(XNA)

So I am having issues with my platformer that I am developing. I can detect collisions fine when there are a line of parralel blocks or even single blocks. The issue I have is when blocks form an L ...
1
vote
2answers
124 views

Simple square hit the wall and turn around without stopping

I am coding and making my very first plat former game in Unity 4.5 2D. Basically I want my character to ping pong between two walls. I have set up a GroundCheck and CeilingCheck. I was thinking to ...
0
votes
1answer
65 views

Continous collision happening in Unity2d

I am working on Unity2d. I have a game object called gameobject1 on screen. It holds an image (named "state"). When I drag a tree on a gameobject1 collision is happening continuosly in the same layer ...
0
votes
1answer
86 views

How should I detect collisions with objects on a “timeline”?

I'd like to replicate this game's mechanic of the player smashing walls with a precise timing to a background rhythm. How should I check when each wall should be broken? Does the player animation use ...
2
votes
2answers
144 views

Pathplanning A* Getting stuck in wall

I'm having a problem with my pathplanning. I can plan a path and make my character follow it, that's not a problem but then i plan a path around a wall it takes the shortest way as A* suggests, which ...
1
vote
1answer
144 views

Trigger for Melee-attack not working

I'm currently trying to add a melee-slash attack to my Sidescroller. For that I decided to to have an invisible box-colliders infront of my character. My idea is to activate it when the attack-key is ...
1
vote
3answers
116 views

Removing something on Collision?

I have my collision detection code working so how would I tell my HealthPickup to disappear when my Player collides with it? I haven't played around with it yet but I think I may have to somehow ...
0
votes
1answer
85 views

Can't get the logic behind my AABB collision

This is my collision detection function in the maze game im working at. I never made a game before and I dont have that much programming experience. The question I keep asking me continously is why ...
0
votes
1answer
172 views

How to solve the overlap of two circles that collide

I have two circles , one of the circles is static the other is moving around. I have a method that checks whether the two circles collide. How to make the two circles don't overlap when colliding? ...
0
votes
0answers
54 views

Trying to get an object to move back and forth on collision between two collidable objects

Im trying to get a box object to hit a collidable wall on the right and when it hits it move left and hit the left wall and switch back and so on and so forth. Im having trouble with this because ...
1
vote
0answers
52 views

Setting up 3d Collision for Primitive shapes

Im having some trouble understanding how to set up collision detection between my first person camera and my primitive shapes which are made using the vertex buffer. Do i give my camera a boundingBox ...
0
votes
1answer
86 views

How to retrieve a cube collision by faces

I work for a while on a minecraft game (voxel). I am front a problem for a long time about the collision detection. I want recover the cubes collision from my highlighted black's cube like on the ...
2
votes
2answers
120 views

Sweep collision between two moving spheres?

Say I have a scenario like this: Here I got two spheres (sphere A and B) that moves from on spot to another during a frame. How can I predict where these two collide if they collide at all? In ...
2
votes
1answer
139 views

How to impale and stack targets correctly according to the collider and its coordinate?

I'm making another simple game, a catch game, where a spawning target game object must be captured using a skewer to impale it. Here how: At the start, the falling object (in red) will fall in a ...
0
votes
0answers
83 views

Precalculating timespan of bullet collision on cubic bezier curve circles?

I'm fairly new to game logics, C#/XNA (The language/library of choice) and bezier curves in general, and is stuck in my current project. I'm going to try to explain as thoroughly as I can what the ...
0
votes
1answer
335 views

How does Raycasting work in XNA Farseer and player collision?

Wanting to know how to figure out if player's bottom is colliding with object so that I could allow the player to jump. I was trying to use OnCollision but was referred to ray-casting, I looked ...
0
votes
0answers
112 views

Farseer Player Movement and Collision

I have added a video link for any one who whats to see what the problems are by watching the game. I am trying to create a player movement system and there are small problems that I am running into. ...
0
votes
0answers
163 views

Non-rectangular hitbox methods in XNA

I'm creating a 2D top-down RPG, and many of my buildings/scenery have non-rectangular corners to the textures. Does anyone know a good way to create circular/triangular/polygonal hitboxes, or is too ...
1
vote
1answer
238 views

Player Movement Systems

I am working on a project were in class my group of students help produce a video game. We are creating a 2D platformer and was trying to make a pixel based system collision witch fell through. Now I ...
0
votes
0answers
74 views

Interactions between camera and procedural terrain

QUESTION REWORKED I need to update every frame camera position along a surface with hills and drops. In this picture you can see a particle of the surface terrain (just one triangle) and a sphere ...
1
vote
1answer
284 views

Strange collision behaviour in 2D game even though the collision is very basic [closed]

I have a player ship (cube) and some enemy laser projectiles. When the player ship has position X values greater than 1, collision with the enemy projectiles occur but when it has lower X values, the ...
0
votes
0answers
102 views

Smooth circular collisions with edges/collision boxes [C# + XNA]

So, me and a friend are working on our top-down perspective 2D game, and have come to work on perfecting our collisions. In its current state our player sprite is colliding with walls, but is ...
1
vote
2answers
384 views

2D AABBs and resolving multiple collisions

Okay, so this is a problem I've been trying to figure out for quite some time. Mine is a 2D platformer game with a world made up of (usually) immobile tiles and mobile sprites, both of which use AABBs ...
0
votes
0answers
395 views

NavMesh agents pushing other NavMesh Agents in Unity Pro

Using the NavMesh system in Unity, I created pathing system for my player character as well as the enemy AI. When a group of enemy NavMesh Agents surround my player character, they can be pushed out ...
1
vote
1answer
358 views

Sprite collision with color?

Is this possible? To elaborate, I am making a PacMan offshoot. Essentially it is a "zoomed in" version of the game, but the board is randomly generated. I have 11 .png files each to be used as a ...
1
vote
1answer
49 views

A Sensor’s ContactList Keeps Old / Ignores New Contacts, When That Contact Is still

Okay this is a hard one to explain so I’ll try my best. Basically every time my enemy class updates, it runs a SightCone Sensor Contact List test, so this is every single frame it checks for all the ...
0
votes
1answer
108 views

How to loop through objects in class (XNA)? [closed]

In my game I have an Enemy class, and in that I have a constructor which I use to make Enemy objects. How do I add all Enemy objects to a list or loop through all of them using a foreach loop? I ...
0
votes
1answer
110 views

AABB SAT code detects collision wrongly [closed]

I've been having trouble getting my SAT code working using AABBs, and I've been trying to find a solution but, I'm scratching my head. For some reason, it detects collisions very wrongly, as shown by ...
7
votes
3answers
672 views

Reusable top-down collision class

I've recently picked up monogame and am working on a simple top down game to get me started and learn the basics. I've got the movement and the rotation to follow the mouse sorted out but I'm stuck ...
0
votes
1answer
107 views

Rectangle collision doesn't work on WP 8

Collision detection is not working correctly when my 64x64 pixel block touches a bigger block. The big(rect2big) block measures 128x128 pixel. The falling block should change it's color to black when ...
-1
votes
1answer
806 views

Xna tile map collision

I finally found a tutorial on tile maps and loading them in from a file that I understand (http://circlessuck.blogspot.co.uk/2012/09/xna-tutorial-basic-tile-engine-part-2.html), however the tutorial ...
-1
votes
1answer
258 views

3d Wall sliding collision

I'm working on collision for walls in my game and the way I currently have it I get stuck walking into a wall. I'm trying to make my character slide on the walls but still collide. My character moves ...
2
votes
1answer
222 views

3D movement on an authoritiative server?

I'm developing an MMORPG, using Unity for the client and "standard" C# 4.0 for the authoritative server. The server should check each player's movement and ensure that it does not collide with props ...
1
vote
0answers
329 views

XNA Monogame How to handle tile collision [closed]

I am working on a simple XNA side scrolling game as a learning exercise. It works by creating a level object which creates a matrix of tiles based on a map within a text file. The tiles are then drawn ...
1
vote
3answers
378 views

Preventing tunneling of small, fast objects

I'm making a basic shooter game with my friend and i have encountered a problem. I kind of know solution this but i just cant implement it. This is my first game made with XNA/MonoGame and i'm not too ...
3
votes
1answer
180 views

Why would a Bounding Sphere and BoundingBox not intersect (when they should)?

I have a bounding sphere and a bounding box that should be intersecting, however, Intersects(...) is returning false. For example, the following returns false: new BoundingSphere(new Vector3(500, ...
3
votes
1answer
119 views

How to determine depth of a pixel perfect collision

I am trying to figure out how to determine the depth of a pixel perfect collision in XNA. I want to know the depth in order to be able to use it in my collision response. At the moment I have the ...
3
votes
1answer
151 views

How do you get the collision plane when using AABBs? [duplicate]

My collision detection initially seemed to work well enough, but my answer to this question shows that I have went with SAT testing now instead. My goal was to find the plane at which to slide the ...
0
votes
2answers
574 views

C# XNA AABB vs AABB collision resolution, AABBs ghost through each other

I've been learning a bit of collision resolution through a tutorial here and I can't seem to get the AABBvsAABB resolution working, I have CirclevsCircle and AABBvsCircle resolution working with the ...