Unity is a cross-platform game creation system that focuses on easy art pipeline process. It consists of a game engine and an integrated development environment. The game engine's scripting is built on Mono.

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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) { ...
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899 views

Why does my model render differently than its preview?

I've been importing .fbx files that I made with 3DS Max 2012 into Unity, and it's quite neat to see my models running around in game. However, I can't help but notice that the models, as they're ...
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In Unity, can I make a GameObject within a prefab disabled by default?

If I create a simple object hierarchy in my scene... -ExampleGameObject --Child1 [is active] --Child2 [is not active] ...how can I accurately store this as a prefab? If I drag ExampleGameObject to ...
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6k views

How to make a Realtime 3D Eulerian Fluid Simulation like “From Dust” in C#/Unity3D?

So, for a game project I'm going to be working on I need to make a fully working 3D fluid simulator in Unity3D using C#, that can work in real time. The only problem is, I've never done anything like ...
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7k views

Unity GUITexture or GUIText not showing up

Currently I've got a little 2.5D platformer with the camera tracking the player. Now when I go to insert a GUITexture or GUIText game object into the scene, it comes up absolutely fine in the Editor ...
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945 views

NullReferenceException when accessing variables in a 2D array in Unity

I have made a class including variables in Monodevelop which is: public class GridInfo : MonoBehaviour { public float initPosX; public float initPosY; public bool inUse; public int ...
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614 views

If I were to start an Android or iPhone app or game, what program should I use? [closed]

I don't really know a lot about programming and the only things I do is using codes with Gamemaker, but I have read that it is too basic and it can't be used with iPhone or Android. Is there anything ...
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57 views

What is the best practice for handling touch events on different GameObjects in Unity2D?

First of all I want to describe what I have in my scene. 1. Joystick. 2. Main character that has link to joystick and handles touch events from joystick. 2. Buttons. 3. Other GameObjects that must ...
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57 views

What is the correct way to authenticate a player with password from Unity to a php api server?

So, I have a game in Unity for mobiles that gives you the possibility to sign-up with username, email and password to unlock extra features. The datas are sent, through a POST request, to a PHP+MYSQL ...
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133 views

How can I optimize the size of my .apk?

I noticed that the Flappy Bird .apk is only around 900 KB. I'd like to know how I can achieve a similar optimization in .apk file size for my own games, which use Unity. A small single-scene game ...
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79 views

Scaling a GameObject for a progress bar representation

I am trying to implement a progress bar system for my game. I know that it could be done with Unity's OnGUI and scaling with width of the texture but I don't want it to be a GUI element because in my ...
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116 views

Avoiding singletons for puzzle system [closed]

Say for instance I have a puzzle with 3 switches that need to be in some configuration (say all on) in one room, that opens a door in another, with a load screen separating, so I can't link the ...
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48 views

Using IPAD's as controllers for a Unity game

We are making a Multiplayer game using Unity. The actual game would be run from a PC projected on a screen and the players would be using their respective Ipad as a controller to play the game. I am ...
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1answer
62 views

Skipping a loop in foreach? [closed]

I'm trying to get Unity to filter through a list of nodes, but I am unsure on how to do so. This is what I have derived. foreach (TileNode z in map.nodes) { int num = TileNode z; ...
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115 views

Enemy clones don't target player

In a small game that I'm making enemies multiply when you kill them, however when clones are instantiated they don't chase the player like the original prefabs do (example: ...
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43 views

Destroying the instance that instantiated the prefab

What I have so far: A fuel that has Fuel script attached to it. The fuel prefab is first instantiated from another script in its Start() method. problem: The Fuel script is such that it results in ...
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2answers
114 views

How to give a Jerk Effect when the player is moving left of right

float amttomove = Input.GetAxis("Horizontal") * playerspeed * Time.deltaTime; transform.Translate (Vector3.right * amttomove); Currently, I have above script in Update function to move ...
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185 views

What is the best type of c# timer to use with a Unity game that uses many timers simultaneously?

I am developing a stand-alone 3d game in Unity that will have anywhere from 1 to 200 timers running simultaneously. There will be a GameObject containing 1 timer. For this game timer durations will ...
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675 views

Material tiling and offset in unity

Ambiguity: What exactly is the difference between Tiling the material and Offset of material? Need to do: I need the material to be repeated n times on the object where I need to set the value of n ...
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1answer
4k 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, ...
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2answers
437 views

Health bar in unity

I have created a button as my health bar and it must decreasing after a specified time.Here is the code I have written.But the problem,this code is working in the form "Its decreasing the button ...
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1answer
57 views

Unity display message upon keypress?

Hi I'm trying to get NGUI's HUDtext to display a set of text message one of which being "Try using WASD to move" and displaying "Well done!" upon input of any of the four keys. Unfortunately I'm not ...
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495 views

Why is anti aliasing not being applied to my 2D objects in Unity?

I am drawing 2D objects in Unity. Some of these objects are drawn using the standard sprite method that is built into Unity. Others are computed as distance functions in a shader. In both cases I ...
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2answers
384 views

Why does my terrain turn white when I get close to it?

When I zoom in on my terrain it goes white: The further in I zoom, the greater the whiteness becomes. Is this normal? Is this to speed up rendering or something? Can I turn it off? I'm also getting ...
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58 views

Is it possible to use Unity components individually outside of the Unity Studio?

Such as physics, rendering or math libraries/objects. I would like create a project which would benefit from a few game engine related things but rather than use a mixture of separate libraries I ...
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275 views

Textures in Unity3D appear with lower quality than in Photoshop

I made game assets that look great in Photoshop, but they look like crap when I import then into Unity and run the game. Why?
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150 views

Mismatch cordinate system of unity and android

I am new to unity3d, Right now i am adding a cube as game object with coordinate 0,0,0 But when i run it on android device Iam facing 2 problem a) Coordinate system of unity3d are different from ...
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1answer
796 views

How can I have my third-person camera track slightly ahead of the player as he or she moves?

I have a 3rd person camera controller in a top-down game. I have my cameran following the player and I currently use linear interpolation to make the movement smooth and a little laggy. But I would ...
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3answers
371 views

Multiplayer object interpolation

Currently I'm participating in a multiplayer game project as a network developer. Unfortunately, however, I'm facing an interpolation problem which makes game objects look like they are ...
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3answers
700 views

Lerp problem object teleporting not moving

Hi i just wanna move my object smoothly from one position to another but object disappear and immediately teleport to position where i clicking anyone know whats happen ? if ...
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4answers
1k views

sample project that mix unityscript and c#

I like the simplicity of unityscript, at same time I also like the plenty of c# library and open source projects. I prefer to put my model/controller/logic flow in unityscript using standard unity3d ...
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2answers
2k views

2D Water Shader

I am trying to build a 2D Water shader and I am using Unity but the plateform isn't a problem. Here is an example of what I am trying to reproduce : Limbo water shader Are there any good tutorial or ...
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130 views

Why does my object “jump” immediately as the game starts?

I'm having a problem where, when I start my game, my game object (a 3D plane) immediately jumps 300 pixels or so. I suspect this has something to do with my joystick handling code that I've written to ...
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476 views

Puzzled about game mods

I'm new to game development. I was thinking of different ways to create a game. I discovered Unity3d as much preferred indie game engine and yet so powerful. Then I read about game mods, which I found ...
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1answer
1k views

Calculate the angle between two 3d vectors: Function always returns 89.1-89.9

I have my own 2d game and I am attempting to calculate the angle between 2 GameObjects. My Problem: My function that is meant to calculate the angle(direction) between 2 Vector3's doesn't appear to ...
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1answer
447 views

How do I prevent dynamic GUI elements from overlapping in Unity?

I'm working on a birds-eye-view for our Unity3D game world, where each point of interest has a label hovering above it. The problem is that sometimes they overlap, although there is more than enough ...
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2answers
2k views

GUI.Button inside GUI.Window not responding

I am trying to do some GUI work with unity but am having some issues. I call a window with this code: fortuneRect = GUI.Window(0, fortuneRect, fortuneWindow, "Your future"); and inside the window ...
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2answers
93 views

How to reverse gravity in Unity

I'm trying to figure out how script gravity reversal on collision with an object. How can I reverse gravity?
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1answer
72 views

How to execute code every x seconds in unity?

So I have a flashlight battery script I created and I need to know how do you make the battery variable go down every few seconds(whatever time you set.) I tried InvokeRepeating but it was an absolute ...
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2answers
81 views

StartCoroutine function inside TriggerOnEnter2D not working - unity + kinect

So i'm using Kinect with unity to track user's hand movements, and let the user's hand act as a mouse, I have written the code to detect a collision between a button (sprite object) and the hand ...
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4answers
147 views

When would a mesh collider be better than primitive colliders

I have been reading through the Unity Manual and have come across some interesting information about mesh colliders and primitive colliders. It got me wondering if using many primitive colliders would ...
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2answers
115 views

How unity works on Web

How Unity can work on Web if the code is written in C#? I understand that you can compile the C# code to a shared library and use it in Java (for Android) in ObjectiveC (for iOS) to enable Unity on ...
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2answers
197 views

Unity yield WaitForSeconds() not working

I am new to Unity development. I started learning Unity by reading tutorials, demos, examples, and watching videos. And I am having some trouble with using this timer. Here is my code: void ...
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1answer
55 views

Why does changing texture change it for both objects? [duplicate]

I have two identical objects in my Unity scene. When I change the texture of one, the texture is changed on the other, almost as though the first one is a prefab. Why is this happening and how can I ...
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1answer
102 views

What is the speed difference between cross platform HTML5 games and native mobile games? [closed]

Microsoft is advertising and promoting cross platform HTML5 game development. I am thinking of creating a simple 2D side scroller game and I am trying to decide what engine should I use for creating ...
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2answers
116 views

Destroy GameObject as an Array of Transform instantiated destroying the whole array

I am trying to destroy a GameObject with the Destroy() method, but when I call it the whole array is destroyed, not just that element. //Instantiating the prefabs public Transform[] blue; foreach ...
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2answers
90 views

Getting neighbors of hex tiles in 3D space

I have a hex tiled model like attached below. Each of the hex tiles are separate objects meaning I can access each of the hex tiles individually inside Unity Now in my program I want to be able to ...
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55 views

Changing distance after some time on OnGUI Unity

Though I am using IEnumerator to calculate the distance travelled value, the distance is updated very frequently, how can I change that? and why exactly increasing the time in WaitForSeconds function ...
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1answer
70 views

Unity create water issue

I use daylight water in my project but by the default it has not got any waves or light tracing effects. But in some tutorials I see how the user add standard water asset and it has got beautiful ...
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1answer
56 views

How do I properly import an fbx 3D model into Unity3D?

I am trying to properly import a 3D model that was made for my game in Unity3D. I was able to import the model, and I put the texture on it, but there are several other files that go unused. I think ...