Triple Coding Help!

Help & Support
1

I need help with a few things

  1. I need Help with coding a jump
  2. I need help with coding a gun
  3. I need help with creating an explosion that can be called at will

Thanks for your time
Hope you get back to me soon

Sincerly
-William Boersma

3

Hi @WilliamBoersma31, and welcome!

  1. For help with coding a jump mechanic, you can check out the following topic - How can I make my character jump?

  2. For coding a gun, do you have your models ready, and you need help with coding the shooting bit of it? Do elaborate a bit more on what you have done, and what you need said gun to do.

  3. For explosions, you can check out https://playcanvas.com/project/439297/overview/explosion-particle-effect, and check the play method for particle systems - https://developer.playcanvas.com/en/api/pc.ParticleSystemComponent.html#play.

Hope this helps!

4

@DevilZ ok thank you also for 3 i meant more of launching things not particle although the particles will help

5

also for 1 i need help with ground check

6

For this, check if your character is colliding with the ground. Have a look at https://developer.playcanvas.com/en/tutorials/collision-and-triggers/

7

yes i have a code that used an entity with collision attatched to the ground but it did nothing when you pressed space

Jump.prototype.initialize = function() {
this.entity.collision.on(‘triggerenter’, this.onTriggerEnter, this);
};

// update code called every frame
Jump.prototype.onTriggerEnter = function(entity) {
entity.rigidbody.applyForce(0, 1, 0);

};

8

Also here is my other attempt at a jump

var position = this.entity.getPosition();

if (app.keyboard.isPressed(pc.KEY_SPACE)) {
    if(this.groundedY) {
        this.entity.rigidbody.applyImpulse(0, 0.5, 0);
    }
}

if(position.y > 1.2) {
    this.grounded = true;
}
else {
    this.grounded = false;
}
9

So is this working? I don’t see why it shouldn’t, how did you arrive at the value 1.2? Although I don’t see you declare the variable groundedY, only grounded.

10

oh whoops ill fix that and try it thanks

11

@DevilZ I tried at and it didn’t work any thing else i need to fix?

var position = this.entity.getPosition();

if (app.keyboard.isPressed(pc.KEY_SPACE)) {
    if(this.grounded) {
        this.entity.rigidbody.applyImpulse(0, 0.5, 0);
    }
}

if(position.y > 1.2) {
    this.grounded = true;
}
else {
    this.grounded = false;
}

};

12

What function is this under?

13

update

14

@DevilZ never mind about the jump i figured out a work around.

1 Like
15

can you help me with making a gun that launches whatever you shoot?
also I’ve decide to scrap the explosion

16

Mainly raycasting help

17

I tried the raycasting tutorial but got confused

18

What exactly did you try? Any error messages? Please post the code here so we can have a look.

19

I figured out the raycasting i just need to find a way to shoot where im aiming

20

here is my code.

var Raycast = pc.createScript(‘powPow’);

// initialize code called once per entity
Raycast.prototype.initialize = function() {
if (!this.entity.camera) {
console.error(‘This script must be applied to an entity with a camera component.’);
return;
}

// Add a mousedown event handler
this.app.mouse.on(pc.EVENT_MOUSEDOWN, this.mouseDown, this);

// Add touch event only if touch is available
if (this.app.touch) {
    this.app.touch.on(pc.EVENT_TOUCHSTART, this.touchStart, this);
}

};

Raycast.prototype.mouseDown = function (e) {
this.doRaycast(e.x, e.y);
};

Raycast.prototype.touchStart = function (e) {
// Only perform the raycast if there is one finger on the screen
if (e.touches.length === 1) {
this.doRaycast(e.touches[0].x, e.touches[0].y);
}
e.event.preventDefault();
};

Raycast.prototype.doRaycast = function (screenX, screenY) {
// The pc.Vec3 to raycast from (the position of the camera)
var from = this.entity.getPosition();

// The pc.Vec3 to raycast to (the click position projected onto the camera's far clip plane)
var to = this.entity.camera.screenToWorld(screenX, screenY, this.entity.camera.farClip);

// Raycast between the two points and return the closest hit result
var result = this.app.systems.rigidbody.raycastFirst(from, to);

// If there was a hit, store the entity
if (result) {
    var entity = result.entity;
    entity.rigidbody.applyImpulse(localOffset);
}

};

21

@DevilZ Never mind @Leonidas helped me