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//Enemy.qml
import QtQuick 2.0
import Qt3D 1.0

//Creates an enemy
Item3D {
    id: enemy

    //Size of the object for the collision detection
    property real radius: 1.5

    property int hitpoints: 10

    mesh: Mesh { source: "Fruits/Fruits.3ds"; options: "ForceSmooth";}

    pretransform : [
        Rotation3D {
            angle: -180
            axis: Qt.vector3d(0, 1, 0)
        },
        Scale3D {
            scale: 0.01
        }
    ]
    //The enemy movement
    SequentialAnimation {
    id: bossMovement
    running: root.state=="BossFight"
    loops: Animation.Infinite
    PropertyAnimation{
        target: enemy
        properties: "x"
        duration: 5000
        to: -16
        easing.type: Easing.InOutSine
    }
    PropertyAnimation{
        target: enemy
        properties: "x"
        duration: 5000
        easing.type: Easing.InOutSine
        to: 16
    }
    }

    //Animation which moves the the enemy towards the player
    NumberAnimation on z{
        running: true
        duration: 10000
        from: 200
        to: 40
        onRunningChanged: { if (running == false) root.state="BossRotation" }
    }

    Timer {
    id: shootTimer
    interval: 500
    repeat: true
    running: root.state=="BossFight"
    onTriggered: {
        shootLaser()
    }
    }

    function hit() {
    hitpoints--
    if (hitpoints <= 0) {
        explode();
    }
    }

    function explode () {
        root.score+=20
        var component = Qt.createComponent("ExplosionSystem.qml")
        var object = component.createObject(level, {"position": position})
        shootTimer.running=false
        bossMovement.running=false
        root.state="EnterHighscore"
    }

    //Shoots a bullet
    function shootLaser() {
    var component = Qt.createComponent("Bullet.qml")
    var object = component.createObject(level, {"position": enemy.position, "radius": 0.2,
                  "dir": Qt.vector3d(0,0,-1), "collisionTarget": player});
    object.collisionDetected.connect(player.hit)
    object.collisionDetected.connect(object.destroy)
    }
}