Click on an Entity

Hi, I´m trying to detect when I click on a sprite2D, hoe can I to do that in Tiny Mode.

 

1. Firstly, for a sprite2D to be able to be clicked, it needs the Sprite2DRendererHitBox2D component
2. Then you have to detect your click or mouseDown
3. Then you have to get the world-space point of clicking
4. Then you have to raycast (or equivalent) to your world-space point of clicking
5. Maybe do some additional checks to see if the entity you hit is the one you want to hit

In code (assuming you have the Sprite2DRendererHitBox2D component set on your entity), it would look something like this:

Code (CSharp):

1. if (ut.Core2D.Input.getMouseButtonDown(0)) {
2.     let mousePos = ut.Core2D.Input.getWorldInputPosition(this.world);
3.     let hit = ut.HitBox2D.HitBox2DService.hitTest(this.world, mousePos, this.world.GetEntityByName("Camera");
4.  
5.     if(!hit.entityHit.isNone() && this.world.getEntityName(hit.entityHit) == "MyEntity") {
6.         //Do something with the hit entity
7.     }
8. }

Note that for better code, you probably want to store a reference to your camera entity instead of finding it by name. Same goes for identifying your hit entity by name.

 

Thank you so much

 

What about MouseInteraction, does it work only with UI?

 

Also I tried to usePhysics2D.Physics2DService.hitTest, but for some reason the hit is always null.

Code (CSharp):

1. if (ut.Core2D.Input.getMouseButtonDown(0)) {
2.                 let mousePos = ut.Core2D.Input.getWorldInputPosition(this.world);
3.                 let mousePos2D = new Vector2(mousePos.x, mousePos.y);
4.                 let hit = ut.Physics2D.Physics2DService.hitTest(this.world, mousePos2D);
5.                 console.log(mousePos2D);
6.            
7.                 if(!hit.isNone)
8.                 {
9.                     console.log("Hit");
10.                 }
11.             }

Edit: The hitbox example above works, but I need to detect clicks on an Entity with no sprites

 

You could just drop down the alpha of sprite to 0 in sprite renderer

 

Nevermind, solved the mistery. hit.isNone is a method, missing the brackets there ()