Add support for clipRects to FlxTiledSprite.

[EliteMasterEric]

Adds the ability to clip FlxTiledSprites inside a rectangle by assigning the clipRect.

[Geokureli]

forgot this, i'll test this out tomorrow

[Geokureli]

Suggested change

	override function set_clipRect(Value:FlxRect):FlxRect
	{
	if (Value != clipRect)
	regen = true;
	return super.set_clipRect(Value);
	}
	override function set_clipRect(value:FlxRect):FlxRect
	{
	regen = true;
	return super.set_clipRect(value);
	}

couple things

1. use lower case arg names
2. regen even if the same rect instance is set. one common way to use this is

sprite.clipRect.width = 100;
sprite.clipRect = sprite.clipRect;

[Geokureli]

this doesn't seem to work right. In addition to the change I requested above, it behaves in unexpected ways here:

Screen.Recording.2024-06-11.at.11.28.31.PM.mov

notice that the bottom is cut off, and it tiles above when rect.y=-50 and height=200. I wasn't expecting it to tile above, but I was expecting it to look identical to the initial state in the vid

Here is my test case (it requires the above change to work):

package states;

import flixel.text.FlxText;
import flixel.math.FlxRect;
import flixel.addons.display.FlxTiledSprite;
import flixel.FlxG;

class TiledSpriteTestState extends flixel.FlxState
{
    var sprite:FlxTiledSprite;
    var text:FlxText;
    
    var toggled = true;
    
    override function create()
    {
        super.create();
        
        sprite = new FlxTiledSprite("assets/images/haxe.png", 200, 100);
        sprite.clipRect = FlxRect.get(25, 0, 150, 100);
        sprite.screenCenter();
        add(sprite);
        
        text = new FlxText("");
        updateText();
        add(text);
    }
    
    function updateText()
    {
        text.text = sprite.clipRect.toString();
        text.screenCenter();
        text.y += 100;
    }
    
    override function update(elapsed)
    {
        super.update(elapsed);
        
        if (FlxG.keys.justPressed.SPACE)
        {
            sprite.clipRect = toggled ? sprite.clipRect.set(0, 0, 200, 100) : sprite.clipRect.set(25,-50,150,200);
            toggled = !toggled;
            updateText();
        }
    }
}