Questions tagged [prefabs]

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Custom inspector values in prefab mode not save to prefab

I have a prefab with a custom GridModel component which has a custom editor. For some reason whenever I edit a value in Prefab Mode, the value doesn't save in the ...
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1answer
174 views

How to make random spawn objects in unity 3D

I created an infinte runner game. I need to make random spawning obstacles ON 3D. How do I randomly spawn prefabs on the X axis using a C# script?
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1answer
29 views

How could I put a prefab into a field of a game object using editor API in Unity?

How could I put a prefab into a field of a game object using editor API in Unity? I have a game object. It has a GameObject field. I can drag and drop a prefab from ...
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1answer
42 views

If I create a prefab out of an object on scene will my game take more memory in Unity?

If I create a prefab out of an object on scene will my game take more memory in Unity? I have 30 enemies on my scene. I created a prefab for every one of them. I am going to use each of the created ...
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1answer
55 views

How to pre-configure a prefab in the editor for multiple similar buttons before instantiating them

Let me explain my problem with my concrete example. I have a button prefab. A button prefab has a lot of configurations: background color, background shape, background image, text, text color, button ...
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1answer
40 views

Optimal Way to Create Card Templates in Unity 2D

I have a couple questions involving software architecture and best practices in Unity. Although I have some programming knowledge, I am just starting with Unity and C#, and I would like some input ...
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1answer
40 views

How to make an upgrade a building and replace it with the Level 2 prefab?

I want to to have multiple prefabs like canon level 1 and then level 2. When the player has enough coins, they can upgrade it to level 2. I want to make a game similar to Clash of Clans so I will have ...
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1answer
411 views

How to correctly instantiate prefab in Unity

I made a prefab and drag drop it to the Tile Prefab slot as shown in the picture In my code ...
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1answer
27 views

can't instantiate different objects

I'm trying to instantiate different prefabs at once. But couldn't figure out how. I tried to use Random.Range method but didn't worked for me. It instantiates only one of the prefabs. I want it to ...
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0answers
82 views

How can I make a health bar — a UI element — part of a character prefab?

Description I want my character prefabs to come with their own health bar, but I can't simply add one as part of the prefab, because it's a UI element and therefore goes into a Canvas. Potential ...
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1answer
132 views

Prefab not working when I import maps form Tiled using Tiled2Unity

I have correctly created the map using Tiled with no errors or warnings, then i imported the package from tiled2unity, imported the map then waited few seconds and the prefab from tiled2unity appears ...
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1answer
1k views

Unity: how do I get a list of prefab tiles from the TileMap?

I'm building a 2D strategy game where I've decided to use TileMap for spaces which characters can traverse. My tiles need to be prefabs, because they will have a script attached to them to store ...
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1answer
82 views

Unity: Sprite stretch issue

I have a simple png square 8px x 8px. In Unity I've left the pixels per unit at 100 and added the image to the scene to create a prefab of the item. I then add four items to the screen like so: ...
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1answer
322 views

Check if 2 objects with multiple colliders overlap using bounds

I'm writing a script which instantiates buildings in a scene, but in such a way that 2 buildings don't overlap with each other. Every building consists of approx. 10 parts, of which each has a box ...
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1answer
30 views

NullReferenceException when translating instantiated prefab [duplicate]

I keep getting this error: NullReferenceException: Object reference not set to an instance of an object moveBlock.Update () (at Assets/Scripts/moveBlock.cs:27) whenever I press Play in Game or when ...
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0answers
104 views

I have 240 prefabs to scatter, what is the best way to achieve this?

I'm creating a huge city for which I've made 240 different building prefabs. Now I need to scatter those prefabs randomly with a height, width and depth and rotation randomness variation. I thought ...
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1answer
282 views

Unity hangs when saving prefab asset

For game saving purposes, I'm keeping track of references to ScriptableObjects through a lookup table, so that I can serialize/deserialize using the SO's position in that table. I have a lot of ...
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1answer
341 views

Using Part of prefab as script parameter

I'm trying add a weapon to Eithan - the third person character. So I want to take his hand, which is part of the prefab Eithan (the weapon location) and use it in the my Player.cs script to ...
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0answers
17 views

Prefabs scaling change also the original prefab

I want to work with a prefab as local and global variable? something like that. So my question is how to change a prefab scale without affecting the original prefab.
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1answer
105 views

Unity 3D platform spawning problems

I'm making an infinite runner game in Unity 3D. I have it so that platforms spawn and move backwards toward the player and they are destroyed once past the player. Over time when the platforms are ...
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1answer
70 views

Unity: How can I control a Shadergraph effect on multiple enemies with the same prefab?

So I made a simple White Flash -> Dissolve effect with shader graph 2D, it's my 1st time using shaders. I'm controlling the effect using a float inside the shader, with: ...
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1answer
23 views

List to hold copies of a prefab for later deletion

I'm working on a game in which obstacles are Instantiated randomly 5 to 20 units ahead of the player. When they are instantiated, I want to add them to a list so that when there are too many ...
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2answers
462 views

Unity: I need to edit my prefab but I can't move anything inside it!

I imported a character into Unity and turned him into a prefab. I couldn't get my custom "Look-At" script to work for the eyes, which are children of the prefab I imported. So I opened the prefab and ...
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1answer
670 views

If I don't use PrefabUtility class, how can I save my changed prefabs and build without exception?

I'm designing a racing game for my graduation project. I used PrefabUtility.SaveAsPrefabAsset to save my color change on the car prefabs, I finished the codes and it work well in Unity, but when I ...
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1answer
64 views

How to make collisions occur between objects using the same script?

Well what I’m trying to do is have cars travelling on the road. The cars have a trigger at the front and a hitbox at the back of the cars. What I want to happen is when the trigger hits the hitbox it ...
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1answer
2k views

Instantiating Prefabs at run time

I'm trying to move my project to Addressables and upload assets, prefabs and screens to an archive on the server. I'm a new in Unity and this a bit challenging for me. I've prepared all prefabs for ...
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1answer
48 views

How to store the configuration of Unity prefab components during map generation?

I managed to have a basic map generation algorhytm, but now it needs some content. I generate abstract map data, which then will be used to build the map itself. When I want to generate monsters, ...
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1answer
174 views

How can I insert a prefab instance programmatically inside the Canvas, in the bottom-left corner of the Canvas?

I am trying to create the Snake game in Unity, based on this video tutorial. I have also viewed this tutorial. I have created the new project with the 3D template and manually added the Canvas. I ...
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1answer
59 views

How to translate prefab made of hierarchy of 3d objects

I am trying to translate a prefab of a puzzle piece made of a hierarchy of cubes but it's not working. I have tried translating the GameObject using its transform and the function Translate, it did ...
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1answer
43 views

Referencing Tilemap inside Grid Prefab

I have a prefab of a grid which contains 3 different tilemaps: Main, Foreground, & Background I want to reference the tilemaps inside a script of the prefab but can't figure out how to do that.....
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1answer
175 views

Can I add non-trees to terrain.terrainData.treeInstances on Unity 3D?

I need to create a brush in which there will be stones, poles, bushes and other elements of the environment. I bought a Prefab Brush. Whether it is possible to add the objects that I draw on the ...