[SOLVED] Bullet is not shooting properly

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1

Hi. I’m working on a 3rd person adventure game with attack mechanics. The code I made successfully calls the bullet during a mouse click, but it does not shoot out, staying in the weapon.

This is my current code:

var PlayerMovement = pc.createScript('playerMovement');

PlayerMovement.attributes.add('speed', { type: 'number', default: 0.2 });
PlayerMovement.attributes.add('power', {type: 'number', default: 2500});
PlayerMovement.attributes.add('lookSpeed', {type: 'number', default: 0.25});
PlayerMovement.attributes.add('camera', {type: 'entity',});

// -------- ctobias section ------------------------------------------------------ //
    PlayerMovement.attributes.add('gunEntity', {type: 'entity'});
    PlayerMovement.attributes.add('bulletPower', {type: 'number'});
// ------------------------------------------------------------------------------- //

PlayerMovement.prototype.initialize = function () {
    var app = this.app;
    var camera = app.root.findByName('Camera');
    this.cameraScript = camera.script.cameraMovement;    

    // Listen for mouse move events
    app.mouse.on("mousemove", this._onMouseMove, this);

    // when the mouse is clicked hide the cursor
    app.mouse.on("mousedown", function () {
        app.mouse.enablePointerLock();

        // -------- ctobias section ------------------------------------------------------ //
            this.ctobias();
        // ------------------------------------------------------------------------------- //

    }, this);
};


// Temp variable to avoid garbarge colleciton
PlayerMovement.worldDirection = new pc.Vec3();
PlayerMovement.tempDirection = new pc.Vec3();

PlayerMovement.prototype.update = function (dt) {
    var app = this.app;
    var worldDirection = PlayerMovement.worldDirection;
    worldDirection.set(0, 0, 0);
    
    var tempDirection = PlayerMovement.tempDirection;
    
    var forward = this.entity.forward;
    var right = this.entity.right;

    var x = 0;
    var z = 0; 
    
    if (app.keyboard.isPressed(pc.KEY_A)) {
        x -= 1;
    }

    if (app.keyboard.isPressed(pc.KEY_D)) {
        x += 1;
    }

    if (app.keyboard.isPressed(pc.KEY_W)) {
        z += 1;
    }

    if (app.keyboard.isPressed(pc.KEY_S)) {
        z -= 1;
    }

    if (x !== 0 || z !== 0) {
        worldDirection.add(tempDirection.copy(forward).mulScalar(z));
        worldDirection.add(tempDirection.copy(right).mulScalar(x));        
        worldDirection.normalize();
        
        var pos = new pc.Vec3(worldDirection.x * dt, 0, worldDirection.z * dt);
        pos.normalize().scale(this.speed);
        pos.add(this.entity.getPosition());

        var targetY = this.cameraScript.eulers.x + 180;
        var rot = new pc.Vec3(0, targetY, 0);

        this.entity.rigidbody.teleport(pos, rot);
    }
    
    this.entity.anim.setFloat('xDirection', x);
    this.entity.anim.setFloat('zDirection', z);
};


// user-defined function - ctobias section ----------------------------------------//
PlayerMovement.prototype.ctobias = function(dt){
    
    // step-1 get the center of the screen
    var centerScreenX = this.app.graphicsDevice.width/2;
    var centerScreenY = this.app.graphicsDevice.height/2;

    // step-2 get the start and end point
    var start = this.camera.camera.screenToWorld(centerScreenX, centerScreenY, this.camera.camera.nearClip);
    var end = this.camera.camera.screenToWorld(centerScreenX, centerScreenY, this.camera.camera.farClip);

    // step-3 trigger raycas between two points and return the closet hit result
    var result = this.app.systems.rigidbody.raycastFirst(start, end);

    // step-4 set the bullet asset, identify the gunEntity, apply force and create instance

        // step 4.1 bullet asset
        var bulletAsset = this.app.assets.get(173129146);

        // step 4.2 create the instance of the bullet
        var bulletInstance = bulletAsset.resource.instantiate();

        // step 4.3 add to hierarchy
        this.app.root.addChild(bulletInstance);

        // step-4.4 identify the gun and set the force
        var gun = this.gunEntity;

        this.force = new pc.Vec3();
        this.force.copy(gun.forward);
        this.force.scale(this.bulletPower);

        var pos = gun.getPosition();
        bulletInstance.setPosition(pos);
        bulletInstance.enabled = true;
        bulletInstance.rigidbody.applyImpulse(this.force);
};

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image1269×946 100 KB

2

Hi @HaoHow!

Can you share the rigidbody settings of the bullet instance?

Make sure it has a dynamic rigidbody.

3

Hello yes its in dynamic
image

4

Alright, I dont see anything wrong.

Are you sure you apply enough force? You can check this by adding methods like below.

alert(this.force);

console.log(this.force);
5

Hi! Sorry just got back to working on this game again. I tried increasing the force (bulletpower) by alot and it still shows the same result. For some reason it also isn’t falling to the ground.

6

I think the entity is missing a collision component. You need to add a collision component and choose the shape that is matching with your model.

7

OMG thank you its finally shooting out, but for some reason it’s shooting backwards? I tried rotating both the character and the camera but it just messed with the movement direction respective to the camera controls

8

If it is shooting backwards you can use a negative forward direction or a negative force.

9

Wow thank you so much you were such a big help. Hope you have a great day!

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