Best way to create 2D tiled sprite. (UnityScript)

Questions & Answers
1

I’ve created a modified version of this answer here using UnityScript on how to make a 2D tiled sprite. How to make 2d sprite tiled? - Questions & Answers - Unity Discussions

// using UnityEngine;
// using System.Collections;

#pragma strict

public var gridX : float = 0.0f;
public var gridY : float = 0.0f;

var sprite : SpriteRenderer;

function Awake () {

    sprite = GetComponent.<SpriteRenderer>();
    // if(!GetSpriteAlignment(gameObject).Equals(SpriteAlignment.TopRight)){
    //     Debug.LogError("You forgot change the sprite pivot to Top Right.");
    // }
    var spriteSize_wu : Vector2 = new Vector2(sprite.bounds.size.x / transform.localScale.x, sprite.bounds.size.y / transform.localScale.y);
    var scale : Vector3 = new Vector3(1.0f, 1.0f, 1.0f);

    if (0.0f != gridX) {
        var width_wu : float = sprite.bounds.size.x / gridX;
        scale.x = width_wu / spriteSize_wu.x;
        spriteSize_wu.x = width_wu;
    }

    if (0.0f != gridY) {
        var height_wu : float = sprite.bounds.size.y / gridY;
        scale.y = height_wu / spriteSize_wu.y;
        spriteSize_wu.y = height_wu;
    }

    var childPrefab : GameObject = new GameObject();

    var childSprite : SpriteRenderer = childPrefab.AddComponent.<SpriteRenderer>();
    childPrefab.transform.position = transform.position;
    childSprite.sprite = sprite.sprite;

    var child : GameObject ;
    var h : int = Mathf.Round(sprite.bounds.size.y);

    for (var i : int = 0; i*spriteSize_wu.y < h; i++) {

        var w : int = Mathf.Round(sprite.bounds.size.x);

        for (var j : int = 0; j*spriteSize_wu.x < w; j++) {
            child = Instantiate(childPrefab) as GameObject;
            child.transform.position = transform.position - (new Vector3(spriteSize_wu.x*j, spriteSize_wu.y*i, 0));
            child.transform.localScale = scale;
            child.transform.parent = transform;
        }

    }

    Destroy(childPrefab);
    sprite.enabled = false; // Disable this SpriteRenderer and let the prefab children render themselves

}

I’m not the best at doing this and am still very new to Unity, so it’s working but with one caveat: It’s creating two rows of these tiles instead of one:

57128-screen-shot-2015-10-28-at-85041-am.png
57128-screen-shot-2015-10-28-at-85041-am.png1193×556 137 KB

I’m basically trying to generate portions of the platformer to avoid having to duplicate a gameobject over and over manually.

So, am I not understanding quite what is being done with the code, or am I missing something? It’s not a deal breaker, and with the camera I am using I’m sure I could find a work around, but I’m hoping someone will point out my mistakes and aid me in the right direction. :slight_smile:

UPDATE OCT 29

The code above works perfectly for creating a 2D tilemap as statement pointed below and here is the adjustment if you want basically use this on only one row:

var child : GameObject ;
    var w : int = Mathf.Round(sprite.bounds.size.x);

    for (var j : int = 0; j*spriteSize_wu.x < w; j++) {
        child = Instantiate(childPrefab) as GameObject;
        child.transform.position = transform.position - (new Vector3(spriteSize_wu.x*j, 0, 0));
        child.transform.localScale = scale;
        child.transform.parent = transform;
    }
2

The script is creating a 2d tilemap.

 var h : int = Mathf.Round(sprite.bounds.size.y);
 for (var i : int = 0; i*spriteSize_wu.y < h; i++) {

I haven’t tested the code or anything but the above looks dodgy. It’ll round the sprites bounds height to the nearest integer. Then it will repeat on for as many spriteSize_wy.y fits in that height. Eh. My brain died a little. Anyway, it means that if the bounds height was 0.5, it would round it up to 1. If spriteSize_wu.y was 0.5, it would run it twice. 00.5 = 0, so 0 < 1. Then the next iteration 10.5 = 0.5, so 0.5 < 1. The third iteration, 2 * 0.5 = 5, so 1 == 1 and not < 1, meaning the loop would stop there. It would do 2 iterations. I have no idea why that round is in there, but it doesn’t seem to do what you want.

If you want to make a strip, you could remove the loop and just set y to 0. Or you could try using the real height without any rounding.

 var h = sprite.bounds.size.y;