r3-legacy/src/game-lib-component-raycast-vehicle-controls.js

GameLib.D3.ComponentRaycastVehicleControls = function(
    componentId,
    frontLWheelIndex,
    frontRWheelIndex,
    backLWheelIndex,
    backRWheelIndex,
    maxForce,
    steering
) {
    this.componentId = componentId || GameLib.D3.Tools.RandomId();
    this.parentEntity = null;

    // maybe we pass this in the constructor
    this.raycastVehicleComponent = null;
    this.frontLWheelIndex = frontLWheelIndex || 0;
    this.frontRWheelIndex = frontRWheelIndex || 1;
    this.backLWheelIndex = backLWheelIndex || 2;
    this.backRWheelIndex = backRWheelIndex || 3;

    this.maxForce = maxForce || 400;
    this.steering = steering || 0.5;
    this.brakeForce = 1000000;

    this.currentSteering = 0;
    this.steeringSpeed = 8.0;

    this.keyLeftPressed = false;
    this.keyRightPressed = false;
    this.keyForwardPressed = false;
    this.keyBackPressed = false;
    this.keyBreakPressed = false;

    // Todo: this should be executed somewhere in game-lib-z, so that we don't execute it on every construction of an object.
    GameLib.D3.Utils.Extend(GameLib.D3.ComponentRaycastVehicleControls, GameLib.D3.ComponentInterface);
};

///////////////////////// Methods to override //////////////////////////
GameLib.D3.ComponentRaycastVehicleControls.prototype.onUpdate = function(
    deltaTime,
    parentEntity
) {


    if (this.keyForwardPressed) { // Forward [i]

        this.raycastVehicleComponent.instance.applyEngineForce(-this.maxForce, this.backLWheelIndex);
        this.raycastVehicleComponent.instance.applyEngineForce(-this.maxForce, this.backRWheelIndex);

    } else if (this.keyBackPressed) { // Back [k]

        this.raycastVehicleComponent.instance.applyEngineForce(this.maxForce, this.backLWheelIndex);
        this.raycastVehicleComponent.instance.applyEngineForce(this.maxForce, this.backRWheelIndex);

    } else if (!this.keyForwardPressed && !this.keyBackPressed) {
        this.raycastVehicleComponent.instance.applyEngineForce(0, this.backLWheelIndex);
        this.raycastVehicleComponent.instance.applyEngineForce(0, this.backRWheelIndex);
    }

    if (this.keyLeftPressed) { // Left [j]

        var t = deltaTime * this.steeringSpeed;
        t = t * t * t * (t * (6.0 * t - 15.0) + 10.0);

        this.currentSteering = this.currentSteering + (this.steering - this.currentSteering) * t;

        this.raycastVehicleComponent.instance.setSteeringValue(this.currentSteering, this.frontLWheelIndex);
        this.raycastVehicleComponent.instance.setSteeringValue(this.currentSteering, this.frontRWheelIndex);

    }  else if (this.keyRightPressed) { // Right [l]

        var t = deltaTime * this.steeringSpeed;
        t = t * t * t * (t * (6.0 * t - 15.0) + 10.0);
        this.currentSteering = this.currentSteering + ((-this.steering) - this.currentSteering) * t;

        this.raycastVehicleComponent.instance.setSteeringValue(this.currentSteering, this.frontLWheelIndex);
        this.raycastVehicleComponent.instance.setSteeringValue(this.currentSteering, this.frontRWheelIndex);

    } else if (!this.keyLeftPressed && !this.keyRightPressed) {

        var t = deltaTime * this.steeringSpeed * 2;
        t = t * t * t * (t * (6.0 * t - 15.0) + 10.0);
        this.currentSteering = this.currentSteering + (0 - this.currentSteering) * t;

        this.raycastVehicleComponent.instance.setSteeringValue(this.currentSteering, this.frontLWheelIndex);
        this.raycastVehicleComponent.instance.setSteeringValue(this.currentSteering, this.frontRWheelIndex);

    }


    if(this.keyBreakPressed) {

        this.raycastVehicleComponent.instance.setBrake(this.brakeForce, this.frontLWheelIndex);
        this.raycastVehicleComponent.instance.setBrake(this.brakeForce, this.frontRWheelIndex);
        this.raycastVehicleComponent.instance.setBrake(this.brakeForce, this.backLWheelIndex);
        this.raycastVehicleComponent.instance.setBrake(this.brakeForce, this.backRWheelIndex);

    } else {

        this.raycastVehicleComponent.instance.setBrake(0, this.frontLWheelIndex);
        this.raycastVehicleComponent.instance.setBrake(0, this.frontRWheelIndex);
        this.raycastVehicleComponent.instance.setBrake(0, this.backLWheelIndex);
        this.raycastVehicleComponent.instance.setBrake(0, this.backRWheelIndex);

    }

};

GameLib.D3.ComponentRaycastVehicleControls.prototype.onSetParentEntity = function(
    parentScene,
    parentEntity
) {

    console.log("Set parent!");

    this.raycastVehicleComponent = parentEntity.getComponent(GameLib.D3.RaycastVehicle);
    if(!this.raycastVehicleComponent) {
        console.warn("NO RAYCAST VEHICLE FOUND!");
    } else {

        var component = this;

        document.addEventListener('keydown', function(event) {

            if (event.keyCode == 73) { // Forward [i]

                component.keyForwardPressed = true;

            } else if (event.keyCode == 75) { // Back [k]

                component.keyBackPressed = true;

            }

            if (event.keyCode == 74) { // Left [j]

                component.keyLeftPressed = true;

            }  else if (event.keyCode == 76) { // Right [l]

                component.keyRightPressed = true;

            }

            if (event.keyCode == 66) {

                component.keyBreakPressed = true;

            }

        }, false);

        document.addEventListener('keyup', function(event) {

            if (event.keyCode == 73) { // Forward [i]

                component.keyForwardPressed = false;

            } else if (event.keyCode == 75) { // Back [k]

                component.keyBackPressed = false;

            }

            if (event.keyCode == 74) { // Left [j]

                component.keyLeftPressed = false;

            }  else if (event.keyCode == 76) { // Right [l]

                component.keyRightPressed = false;

            }

            if (event.keyCode == 66) {

                component.keyBreakPressed = false;

            }

        }, false);

    }
};