Hello everyone! Is there any way to change the texture of each side for a cube? Like minecaft? Please help me.
Thanks, any help is appriciated
Here’s the Unity 5 C# script equivalent of @robertbu’s script for mapping to the current cube primitive. I had to shuffle the UVs around until all of the sides looked right.
void Start () {
Mesh mesh = GetComponent<MeshFilter>().mesh;
Vector2[] UVs = new Vector2[mesh.vertices.Length];
// Front
UVs[0] = new Vector2(0.0f, 0.0f);
UVs[1] = new Vector2(0.333f, 0.0f);
UVs[2] = new Vector2(0.0f, 0.333f);
UVs[3] = new Vector2(0.333f, 0.333f);
// Top
UVs[4] = new Vector2(0.334f, 0.333f);
UVs[5] = new Vector2(0.666f, 0.333f);
UVs[8] = new Vector2(0.334f, 0.0f);
UVs[9] = new Vector2(0.666f, 0.0f);
// Back
UVs[6] = new Vector2(1.0f, 0.0f);
UVs[7] = new Vector2(0.667f, 0.0f);
UVs[10] = new Vector2(1.0f, 0.333f);
UVs[11] = new Vector2(0.667f, 0.333f);
// Bottom
UVs[12] = new Vector2(0.0f, 0.334f);
UVs[13] = new Vector2(0.0f, 0.666f);
UVs[14] = new Vector2(0.333f, 0.666f);
UVs[15] = new Vector2(0.333f, 0.334f);
// Left
UVs[16] = new Vector2(0.334f, 0.334f);
UVs[17] = new Vector2(0.334f, 0.666f);
UVs[18] = new Vector2(0.666f, 0.666f);
UVs[19] = new Vector2(0.666f, 0.334f);
// Right
UVs[20] = new Vector2(0.667f, 0.334f);
UVs[21] = new Vector2(0.667f, 0.666f);
UVs[22] = new Vector2(1.0f, 0.666f);
UVs[23] = new Vector2(1.0f, 0.334f);
mesh.uv = UVs;
}
I also made a big, clean version of @robertbu’s atlas, using words instead of numbers.
Here is my version of the atlas:
As @Eric5h5 mentions, typically the UV mapping is done in a 3D graphics app. And that is how its been done for resources I’ve used. But in theory the UV map of a built in-cube can be mapped to an atlas. I wanted to see how hard it would be.
Here is the sample atlas I used:
And here is the sample script. Attach the script to a cube. Create a material using the above texture and also add it to a cube.
#pragma strict
function Start () {
var mf = GetComponent(MeshFilter);
var mesh : Mesh;
if (mf != null)
mesh = mf.mesh;
if (mesh == null || mesh.uv.Length != 24) {
Debug.Log("Script needs to be attached to built-in cube");
return;
}
var uvs = mesh.uv;
// Front
uvs[0] = Vector2(0.0, 0.0);
uvs[1] = Vector2(0.333, 0.0);
uvs[2] = Vector2(0.0, 0.333);
uvs[3] = Vector2(0.333, 0.333);
// Top
uvs[8] = Vector2(0.334, 0.0);
uvs[9] = Vector2(0.666, 0.0);
uvs[4] = Vector2(0.334, 0.333);
uvs[5] = Vector2(0.666, 0.333);
// Back
uvs[10] = Vector2(0.667, 0.0);
uvs[11] = Vector2(1.0, 0.0);
uvs[6] = Vector2(0.667, 0.333);
uvs[7] = Vector2(1.0, 0.333);
// Bottom
uvs[12] = Vector2(0.0, 0.334);
uvs[14] = Vector2(0.333, 0.334);
uvs[15] = Vector2(0.0, 0.666);
uvs[13] = Vector2(0.333, 0.666);
// Left
uvs[16] = Vector2(0.334, 0.334);
uvs[18] = Vector2(0.666, 0.334);
uvs[19] = Vector2(0.334, 0.666);
uvs[17] = Vector2(0.666, 0.666);
// Right
uvs[20] = Vector2(0.667, 0.334);
uvs[22] = Vector2(1.00, 0.334);
uvs[23] = Vector2(0.667, 0.666);
uvs[21] = Vector2(1.0, 0.666);
mesh.uv = uvs;
}
You need to make a texture atlas, then create a cube in a 3D app and UV map the sides as appropriate for your texture atlas. Alternately, create each side as a submesh, and use different materials with different textures for each submesh. This is slower (more draw calls) but won’t have any mipmap bleeding issues.