How to make a texture fit on all objects

Question

Hi! I am working on a 2D platformer. I have multiple squares of different size which represent the "ground". They all use the same texture but all of them look different. Check the image: http://i.imgur.com/Y27Jxxx.jpg How can I do to make them all look the same like the one at the bottom ?

Answer 1

There is a hierarchy of solutions for this problem

Material for each object (cumbersome, lower performance)
Script that allows you to adjust the tiling (lower performance)
Script that automatically adjusts the tiling (lower performance)
UV mapping the textures in a modeling program (higher performance)
UV mapping textures in code (higher performance)
Shader solution (highest performance)

And there are a few other solutions out there as well. For a PC game, or a mobile game with just few object, lower performance solutions are unlikely to slow the game down. Here is a bit of code for the third solution. Attach the script to each object with the material. It takes the scaling from the x and y size of the object. If the 'y' size is near 0.0, then it uses x and z. The scaling is done at runtime. Note this is not a solution for 3D objects with non-uniform scaling.

 #pragma strict
 
 var factor = 1.0;
 
 function Start() {
     var mf = GetComponent(MeshFilter);
     if (mf != null) {
         var bounds = mf.mesh.bounds;
         
         var size = Vector3.Scale(bounds.size, transform.localScale) * factor;
         
         if (size.y < .001)
             size.y = size.z;
         
         renderer.material.mainTextureScale = size;
     }
 }

The 'factor' variable allows you to make individual adjustments on a object by object basis if you want to.

Answer 2

Answer by gcoope · Jul 25, 2014 at 02:05 PM

If you find the material component on the objects, it will have a couple of text boxes where you can set Tiling and Offset. for your issue you'll want to make sure the Tiling is turned down low.

For your case I'd say try set tiling to something like x = 2 and y = 5, and see what it looks like, then just change them until it looks correct.

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radiKal07 · Jul 25, 2014 at 03:02 PM 0

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Not working. For example I have the basic ground looking good. If I change the tiling so other objects look good the ground will start looking bad.

Owen-Reynolds · Jul 25, 2014 at 03:27 PM 0

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That's because they share a material, so changing one changes them all. $$anonymous$$ake a new $$anonymous$$aterial for each different way you want to tile.

But, I'm thinking that if you didn't already know that, and you don't understand UV mapping, you're going to have troubles. Working with the models in Unity, it's kind of assumed you've learned modelling basic concepts in $$anonymous$$ax/$$anonymous$$aya/blender. Unity deliberately copies the way those programs work and think.

radiKal07 · Jul 25, 2014 at 03:32 PM 0

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$$anonymous$$aking a new $$anonymous$$aterial for each tile won't be inefficient ? Can you point me to some UV mapping tutorials ?

gcoope · Jul 25, 2014 at 03:47 PM 0

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You wouldn't have a new material for each tile I don't believe.

Looking at your picture, I can see 3 kinds of objects:

The ground
Horizontal platform
Vertical platform

For your ground, you can keep that material as it is - maybe rename it to Ground$$anonymous$$aterial or Ground_mat so you can keep track.

Next you'll want to duplicate that material and call it something relevant to the horizontal platform, such as HorizontalPlatform$$anonymous$$aterial. With this new HorizontalPlatform$$anonymous$$aterial, apply that to the horizontal platform and then change the x and y tiling values as I mentioned beforehand so that it looks good. Then finally do the same for the vertical platform - duplicate the materials and edit it's tiling values.

radiKal07 · Jul 25, 2014 at 03:53 PM 0

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Yes but as I will add more levels I will have a lot of platforms of different size.

How to make a texture fit on all objects

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