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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 2.0
Item {
property bool upPressed: false
property bool downPressed: false
property bool leftPressed: false
property bool rightPressed: false
property variant targetComponent: Qt.createComponent("Target.qml");
property variant bossEnemyComponent: Qt.createComponent("Enemy.qml")
property real maneuverability: 0.3
//The game timer is our event loop. It processes the key events and updates the position of the hamburger
Timer {
id: gameTimer
running: root.state=="Game"||root.state=="BossFight"
interval: 50;
repeat: true;
onTriggered: {
if (player.energy<player.maxEnergy)
player.energy++;
//Velocity is updated
player.vx+=player.ax*0.05;
player.vy+=player.ay*0.05;
//Acceleration is updated
player.ax=(player.ax+maneuverability*leftPressed - maneuverability*rightPressed)/1.1;
player.ay=(player.ay+maneuverability*downPressed - maneuverability*upPressed)/1.1;
//Position is updated
player.position.x += player.vx*0.05;
player.position.y += player.vy*0.05;
//If the player exceeds a boundary, the movement is stopped
if (player.position.x>x_bound) {
player.position.x = x_bound
player.vx = 0;
if (player.ax>0)
player.ax = 0;
}
else if (player.position.x<-x_bound) {
player.position.x = -x_bound
player.vx = 0;
if (player.ax<0)
player.ax = 0;
}
else if (player.position.y<-y_bound) {
player.position.y = -y_bound
player.vy = 0;
if (player.ay<0)
player.ay = 0;
}
else if (player.position.y>y_bound) {
player.position.y = y_bound
player.vy = 0;
if (player.ay>0)
player.ay = 0;
}
}
}
focus: true
//Handling of basic key events
Keys.onPressed: {
if (event.key == Qt.Key_A)
leftPressed = true
if (event.key == Qt.Key_D)
rightPressed = true
if (event.key == Qt.Key_W && root.state=="Game")
upPressed = true
if (event.key == Qt.Key_S && root.state=="Game")
downPressed = true
if (event.key == Qt.Key_Space && root.state=="BossFight")
fireLaser();
}
Keys.onReleased: {
if (event.key == Qt.Key_A)
leftPressed = false
if (event.key == Qt.Key_D)
rightPressed = false
if (event.key == Qt.Key_W)
upPressed = false
if (event.key == Qt.Key_S)
downPressed = false
}
//Timer creates targets in a certain interval
Timer {
id: targetTimer
interval: 4000
repeat: true
running: root.state=="Game"
onTriggered: {
var component;
//After a certain amount of targets were created the boss enemy appears
if (targetCount>0) {
targetTimer.stop()
enemy = bossEnemyComponent.createObject(level)
}
//Targets are constantly created and fly towards the player
else {
targetCount++
var object = targetComponent.createObject(level, {"position.x": (Math.random()-0.5) *8, "position.y": (Math.random()-0.5) *6,
"scale": 3-0.2*targetCount, "collisionTarget": player})
object.collisionDetected.connect(targetCollision)
}
}
}
function targetCollision(sender) {
score++
}
function fireLaser() {
if (player.energy>=40) {
player.energy -=40
var component = Qt.createComponent("Bullet.qml")
var laserObject = component.createObject(level, {"position": player.position,"collisionTarget": enemy})
laserObject.collisionDetected.connect(enemy.hit)
}
}
}
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