0
votes
1answer
44 views

Is this Possible to force gameobjects (coliders etc) to get stretched based on the aspect ratio of the screen?

Well with unity3D, I am in big trouble whenever I use sprites. As for textures I compensate for a evener look by Stretching it (Screen.width & Screen.height- that's fine for low end 2D games). Now ...
2
votes
2answers
58 views

Can I make a character solid but not lose non-physics behaviour?

My character can walk around in the world, but walks through other objects, for example a cylinder (stand-in for a cannon). To fix this I added a capsule collider to each of the character and ...
0
votes
1answer
90 views

How to find objects in front of my player

I am trying to find an object that is in front of my player sprite using the following code RaycastHit2D hit = Physics2D.Raycast(transform.position,Vector2.right,EnemyLayer); //EnemyLayer is the ...
0
votes
0answers
39 views

Moving object next to another object

Is there a common way to get to game objects with colliders to 'touch' each other without trying to reach the same position? I dont want to move object A to the position of object B cause they will ...
0
votes
1answer
62 views

How do I add a Rigid body and a box collider component to a Texture2D?

I am making a snake game. I'm basing it on a basic tutorial game, which does no collision detection, wall checking or different levels. All snake head, piece, food, even the background is made of ...
0
votes
1answer
81 views

Why is mesh baking causing huge performance spikes?

A couple of seconds into the gameplay on my Android device, I see huge performance spikes caused by "Mesh.Bake Scaled Mesh PhysX CollisionData" In my game, a whole level is a parent object containing ...
1
vote
0answers
27 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
1answer
215 views

Platformer raycast collision detection

I'm using Unity to create a 2D platformer. For collision detection, I'm using raycasting to detect any possible collisions with specific collision layers, and adjusting the desired delta x & y ...
8
votes
2answers
324 views

How can I prevent rigid bodies from moving through each other using Unity's built-in physics?

I'm trying to create a game where objects can be dragged, but I'm having trouble with the physics. With rigid bodies that have similar masses, they sometimes push through each other when dragged and ...
1
vote
1answer
146 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 ...
2
votes
1answer
120 views

At same positioned game objects collision detection

In my game, I am creating two game objects at same position using Instantiate statement. Each generated object has box collider attached. So I want to detect collision between them so I write ...
0
votes
0answers
233 views

Slope polygon collider 2D causing box collider 2D to 'bump' while sliding on it

I'm doing procedural terrain generation. So far I've created the mesh, and attached a 2D polygon collider to it. The terrain is made up of hills going up and down. After doing so, I put a 2D rigid ...
0
votes
0answers
140 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 ...
2
votes
3answers
152 views

Strategy for detecting hits from a “cylinder ray”?

I was planning on using ray casting for collision detection in my game. However, when I use an attack similar to this: (which would project something like a cylinder), how would I go about ...
2
votes
1answer
207 views

Project collision shapes to plane for 2.5D collision detection

I am working on a top down 2.5D game. In the game anything that overlaps on the screen should be 'colliding' with each other regardless of whether they are on the same plane in the 3D world. This is ...
2
votes
1answer
190 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 ...
0
votes
1answer
274 views

Detecting if “Wall” To The Left or Right Of Player Unity3D

I am working on a 3D Platformer in Unity3D and I need to prevent the player from going through walls. The movement for my player works like this: (A bird-eye-view representation)The areas the ...
0
votes
1answer
123 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
1answer
3k 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) { ...
1
vote
0answers
530 views

Unity3D: collider performances on mobile iOS devices

I'm experimenting with Unity3D and colliders. Unfortunately I still don't have Unity Pro version and I can't use the profiler. Consider the following situation: mobile devices (ios, iphone 3GS). an ...
6
votes
1answer
2k views

Why doesn't Unity's OnCollisionEnter give me surface normals, and what's the most reliable way to get them?

Unity's on collision event gives you a Collision object that gives you some information about the collision that happened (including a list of ContactPoints with hit normals). But what you don't get ...
1
vote
1answer
1k views

Unity Particle System collision detection problem

I'm using Unity 3.5.5f3 wich has the Shuriken particle system. I've made a blood particle system based on Unity's demos. (Exploding paint [Blood]) The blood is flowing and when it collides with a ...
4
votes
1answer
6k views

How to detect collision in Unity3D without rigid bodies?

The target platform of my game is mobile devices therefore I try to develop it performance oriented. It will be a strategy game so I don't really need physics in it, consequently I did not add ...
6
votes
1answer
658 views

Creating custom collision map for 2D

I have a 2D level that I have built in my map editor, and I was wondering the best way to create a collision map for it. I have a collision map layer in my map editor, which saves each node (for ...
2
votes
2answers
594 views

Do I have too many colliders on my screen?

I'm running into a situation where my frame rate drops from 70 FPS (on my desktop computer) down to 5 FPS (on my iphone) and I'm trying to understand why. At the moment, I'm only drawing simple ...
3
votes
3answers
4k views

How do I tell if an object is currently colliding with another object?

I know this sounds simple, but I can't figure out how to tell if a GameObject is currently colliding with another object in Unity. I've looked online, but can't find any tutorials or answers that ...
8
votes
4answers
3k views

Ignore collisions with some objects in certain contexts

I'm making a racing game with cars in Unity. The car has a boost/nitro powerup. While boosting, I wouldn't want to be deviated when colliding with zombies, but I do want to be deviated when colliding ...
4
votes
1answer
1k views

Finding if a point is inside of a mesh (Point-in-polyhedron)

How can I find if a point (Vector3) is inside of a mesh? Would this work for both concave and convex objects? I read somewhere that if you raycast in both directions of every axis (X, -X, Y, -Y, Z, ...
1
vote
1answer
3k views

Collision intepenetration and objects getting stuck (Unity)

I am having what is probably a newbie problem with Unity, but for the life of me, I can't find a decent solution to it. In short: my rigid bodies collide, but sometimes, they interpenetrate and stay ...
2
votes
1answer
786 views

Effects of collisons: broken glass, damaged cars, how are they created?

My question is related in particular to achieving the effects of collision in game engine, how is this done? I have searched a bit, read from the internet and went through a few tutorials, and saw ...
2
votes
1answer
902 views

Unity3D animation and world collisions?

I'm using death animation for my enemies but the problem is that when enemy dies he crosses the walls/world. I want enemy/animation to be pushed back into world when he dies (animation is playing). ...
0
votes
3answers
5k 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. ...
0
votes
1answer
780 views

How to find which side of a collider has been hit from hit.normal?

In Unity3d, i can get the normal of the surface with which the collider collides using hit.normal, but is there a way to find which side has been hit what is provided bu Unity3d? One solution is to ...
5
votes
1answer
2k views

How can I set up a Pong-style game using the physics system in Unity?

I've just been using Unity and chose to learn it by making a Pong game which sounded simple enough as a "hello world" type of game. My goal was to try and encompass enough of the built in engine ...
2
votes
3answers
3k views

Unity, changing gravity game & stopping character when he hit a wall

i am currently working on a 2d puzzle game in the unity engine. One of the aspect of this game is the possibility to rotate the level of 90°. It also rotate the gravity. The main character is not ...
5
votes
3answers
1k views

Make my NPC “see” gameobjects around him in Unity

I have a walking NPC that will "see" the wall in front or behind him (2d gameplay) and that will react accordingly. I was thinking to attach him to an invisible collider that would react to objects ...
1
vote
4answers
2k views

Have a simple enemy detecting he touch a wall to make him stop/turn around

I am doing a very simple scene with a cube sliding on the "ground". Once the cube reach a wall, he is blocked. I want to detect the wall to make the cube go in the other direction. I used ...