Detecting when an entity is tapped or clicked

So I figured out I can get the position of a tap/click using

Code (JavaScript):

1. ut.Runtime.Input.getInputPosition()

but how do I tell if this is inside an entity? Do I need to add physics, or can I use a HitBox2D? I can get the x and y position of the entity, but do I just need to hard code the numbers for width and height, or can I access the width and height of the sprite somehow?

 

MouseButtonEntity()

https://github.com/wulcat/tiny-unit...-sdk/Scripts/Migrate/links/Service/Service.ts

 

You don't have to hardcode numbers, but you do indeed need a HitBox2D.
Also you probably want to get your inputposition in worldspace instead of something else, so you want to do something like

ut.Core2D.Input.getWorldInputPosition(this.world)

to get that instead of

ut.Runtime.Input.getInputPosition()

.

Answer to a previous similar question:

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.

 

Awesome - that did it. Thank you!