onTriggerEnter function

Help & Support
1 
Controller.prototype.onTriggerEnter = function(result){
    
    if(result.other.tags.has('player') && this.count==2 )
    {
        this.app.fire("rotator:point");
        this.other.entity.destroy();
        this.count =4;
        this.countText.element.text = +this.count;
    }
};

When player tag and counter are 2, I want to get the object and destroy the object but it doesn’t work
Where is the problem?

2

Hi @Ozden_Delibas,

Have you debugged what is the value of this.count? Is it 2 as you expect or is it something else?

Try sharing some additional code on how you set the value for that property.

3 
var Controller = pc.createScript('controller');

Controller.attributes.add('speed', {
   type: 'number',
    default: 3
});

Controller.attributes.add('direction_speed',{
   type: 'number',
    default: 17
});

Controller.attributes.add('count',{
   type: 'number',
    default: 2
});

Controller.attributes.add('countText',{
   type: 'entity'
});

Controller.attributes.add('winText',{
   type: 'entity'
});
Controller.attributes.add("sceneId",{
    type:"string",
    default: "0",
    title: "New Level"
});


// initialize code called once per entity
Controller.prototype.initialize = function() {
    //this.entity.collision.on('collisionstart', this.onCollisionStart, this);
    this.app.off("rotator:point");
    this.app.on("rotator:point", this.onPoint, this);
    this.countText.element.text = "Count: 2";
    this.winText.element.text = "";
    
    this.entity.collision.on('triggerenter', this.onTriggerEnter, this);
    
    this.sagButton = this.app.root.findByName('SagButton');
    this.solButton = this.app.root.findByName('SolButtton');
    
    // buttons state
    this.isSagPressed = false;
    this.isSolPressed = false;
    
    // remove old event listenrs
    this.sagButton.element.off('mousedown');
    this.sagButton.element.off('mouseup');
    this.sagButton.element.off('touchstart');
    this.sagButton.element.off('touchend');
    
    
    this.solButton.element.off('mousedown');
    this.solButton.element.off('mouseup');
    this.solButton.element.off('touchstart');
    this.solButton.element.off('touchend');
    
    //add new event listeners
    this.sagButton.element.on('mousedown', this.onSagDown, this);
    this.sagButton.element.on('mouseup', this.onSagUp, this);
    this.sagButton.element.on('touchstart', this.onSagDown, this);
    this.sagButton.element.on('touchend', this.onSagUp, this);
    
    this.solButton.element.on('mousedown', this.onSolDown, this);
    this.solButton.element.on('mouseup', this.onSolUp, this);
    this.solButton.element.on('touchstart', this.onSagDown, this);
    this.solButton.element.on('touchend', this.onSagUp, this);
    
};

Controller.prototype.onSagDown = function(event){
    this.isSagPressed = true;
};

Controller.prototype.onSagUp = function(event){
    this.isSagPressed = false;
};

Controller.prototype.onSolDown = function(event){
    this.isSolPressed = true;
};

Controller.prototype.onSolUp = function(event){
    this.isSolPressed = false;
};


Controller.prototype.onCollisionStart = function(result){
    if(result.other.rigidbody.entity.tags.has('deneme')){
        this.entity.destroy();
    }
};


// update code called every frame
Controller.prototype.update = function(dt) {
    var rb = this.entity.rigidbody;
    var direction_rb = this.entity.rigidbody;
    var moveHoriz = 0;
    var moveVert = 0;
    var direction_moveHoriz = 0;
    var direction_moveVert = 0;
    if(this.app.keyboard.isPressed(pc.KEY_LEFT) || this.isSolPressed){
            direction_moveHoriz = 1;
    }
    if(this.app.keyboard.isPressed(pc.KEY_RIGHT) || this.isSagPressed){
            direction_moveHoriz = -1;
    }
    if(this.speed <= 3){
         moveVert = -1;
    } else this.speed = 3;
    var moveVect = new pc.Vec3(moveVert, 0, moveHoriz);
    rb.applyForce(moveVect.scale(this.speed));
    var direction_moveVect = new pc.Vec3(direction_moveVert, 0, direction_moveHoriz);
    direction_rb.applyForce(direction_moveVect.scale(this.direction_speed));
};


Controller.prototype.onTriggerEnter = function(result){
    
    if(result.other.tags.has('player') && this.count==2 )
    {
        this.app.fire("rotator:point");
        this.other.entity.destroy();
        this.count =4;
        this.countText.element.text = +this.count;
    }
     if(result.other.tags.has('player') && this.count==4){
        this.app.fire("rotator:point");
        this.other.destroy();
        this.count =8; 
    }
     if(result.other.tags.has('player') && this.count==8){
        this.app.fire("rotator:point");
        this.other.destroy();
        this.count =16; 
    }
    if(result.other.tags.has('player')&& this.count==16){
        this.app.fire("rotator:point");
        this.other.destroy();
        this.count =32; 
    }
     if(result.other.tags.has('player') &&this.count==32){
        this.app.fire("rotator:point");
        this.other.destroy();
        this.count =64; 
    }
     if(result.other.tags.has('player')&&this.count==64){
        this.app.fire("rotator:point");
        this.other.destroy(); 
    }

};

onTriggerEnter doesn’t work at all

4

On what kind of entities do you have this script attached to?

For triggerenter to work the entity needs to have a collision component, but no rigidbody component. Start with this example that showcases how to add a trigger and use triggerenter event:

https://developer.playcanvas.com/en/tutorials/collision-and-triggers/

1 Like
5

I think the main problem here is that you are trying to enter into the ‘other’ property of the rigidbody entering the trigger. Because it is a trigger volume only, it is assumed that the result will be the item entering the volume space.

Try making the following change:

if(result.tags.has('player') && this.count==2 )
{
    this.app.fire("rotator:point");
    this.other.entity.destroy();
    this.count =4;
    this.countText.element.text = +this.count;
}

Here is the API reference for your review:

https://developer.playcanvas.com/en/api/pc.CollisionComponent.html#event:triggerenter

I hope this is helpful.

3 Likes
6

Hi @Ozden_Delibas! In addition to what already has been mentioned, I think the rule above is incorrect. Probably you want to use result.destroy(); or this.entity.destroy();.

1 Like