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背景:
上一篇,已經實現了水果不斷向上拋的效果和開始界面,這一篇我們將分析如何切水果,獲得分數;運行demo需要配置好CocosEditor,暫不支持其他工具。demo是跨平臺的,可移植運行android,ios,html5網頁等,代碼是基于javascript語言,cocos2d-x游戲引擎,CocosEditor手游開發工具完成的。
源代碼下載:
請到代碼集中營下載(水果忍者 cocos2d-JS 源代碼):http://blog.makeapp.co/?p=319
不同平臺下的效果圖:
windows
html5網頁
android平臺
代碼分析:
1 創建水果靜態數組,每一個水果都有四個參數,編號,分數,本身的圖片,切除后的碎片;這里定義好了,下面直接用;
FRUIT_DATA = [
{
num: 0,
score: 1,
fruitImage: "apple.png",
cutImage: ["apple-1.png", "apple-2.png"]
},
{
num: 1,
score: 2,
fruitImage: "banana.png",
cutImage: ["banana-1.png", "banana-2.png"]
},
{
num: 2,
score: 2,
fruitImage: "basaha.png",
cutImage: ["basaha-1.png", "basaha-2.png"]
},
{
num: 3,
score: 3,
fruitImage: "peach.png",
cutImage: ["peach-1.png", "peach-2.png"]
},
{
num: 4,
score: 5,
fruitImage: "sandia.png",
cutImage: ["sandia-1.png", "sandia-2.png"]
},
{
num: 5,
score: 0,
fruitImage: "boom.png",
cutImage: "boomlight1.png"
}
];
2 檢測碰撞事件;
# 觸摸有onTouchBegan和onTouchMoved,這是兩個點,可以確定刀鋒的方向,上一節已講過;var flash = cc.MySprite.createFlash(this.rootNode, "flash.png", this.pBegin, loc);
# 首先檢查碰撞,水果和移動點發生碰撞cc.rectContainsPoint(fruit.getBoundingBox(), loc)
#如果碰撞,播放音效;playEffect;
#創建flash
#水果消失,并產生切成兩半 fruit slice
#根據水果的數據獲得分數提示 scoretip
MainLayer.prototype.onTouchesMoved = function (touches, event)
{
if (this.gameStatus == OVER) {
return;
}
var loc = touches[0].getLocation();
for (var i = 0; i < this.fruitList.length; i++) {
var fruit = this.fruitList[i];
if (fruit && fruit.cleanuped == false) {
if (cc.rectContainsPoint(fruit.getBoundingBox(), loc)) {
//splatter audio
cc.AudioEngine.getInstance().playEffect(FRUIT_SOUNDS.splatter, false);
//flash
var flash = cc.MySprite.createFlash(this.rootNode, "flash.png", this.pBegin, loc);
//Fruit Slice
this.newSliceFruit(fruit.num, fruit.getPosition(), flash.getRotation());
fruit.runAction(cc.ScaleTo.create(0, 0));
fruit.cleanuped = true;
//scoreTip
var fruitScore = FRUIT_DATA[fruit.num].score;
this.scoreTip(fruit.getPosition(), fruitScore + "");
this.totalScore += Number(fruitScore);
this.totalScoreFont.setString(this.totalScore);
}
}
else {
this.fruitList.splice(i, 1);
}
}
};
3 水果切成兩半的方法
#三個參數 水果編號num,切除的位置fruitPosition ,旋轉角度rotation;
#從數組取出水果兩個碎片圖片,并創建兩個cut1 cut2精靈
#創建兩個cut的貝塞爾動作bezier1 bezier2,方向是相反的
#兩個cut 分別runAction();
#本來切除的瞬間有一個果汁濺在墻上的效果shadow,因為沒找到合適的圖片 代碼注釋掉了
MainLayer.prototype.newSliceFruit = function (num, fruitPosition, rotation)
{
//one fruit sliced two piece,cut1 and cut2
var data = FRUIT_DATA[num];
var cutImages = data.cutImage;
var cut1 = cc.MySprite.create(this.rootNode, cutImages[0], fruitPosition, 100);
var cut2 = cc.MySprite.create(this.rootNode, cutImages[1], fruitPosition, 100);
cut1.setRotation(rotation);
cut2.setRotation(rotation);
var controlPoints1 = [
fruitPosition,
fruitPosition,
cc.p(fruitPosition.x - 200, -100)
];
var bezier1 = cc.BezierTo.create(1, controlPoints1);
var controlPoints2 = [
fruitPosition,
fruitPosition,
cc.p(fruitPosition.x + 200, -100)
];
var bezier2 = cc.BezierTo.create(1, controlPoints2);
var action2 = cc.RotateBy.create(1, getRandom(360));
cut1.runAction(cc.Spawn.create(cc.Sequence.create(bezier1, cc.CleanUp.create(cut1)), action2));
cut2.runAction(cc.Spawn.create(cc.Sequence.create(bezier2, cc.CleanUp.create(cut2)), action2.clone()));
//fruit shadow
/*var shadowImages = ["shadow2.png"];
var colors = [cc.c4b(200, 0, 0, 20), cc.c4b(0, 200, 0, 20), cc.c4b(0, 0, 200, 20), cc.c4b(200, 200, 0, 20)];
var shadow = cc.MySprite.create(this.rootNode, shadowImages[getRandom(shadowImages.length)], fruitPosition, 10);
shadow.setColor(colors[getRandom(colors.length)]);
shadow.setScale(0.5);
shadow.runAction(cc.Sequence.create(cc.DelayTime.create(2), cc.CleanUp.create(shadow)));*/
};
4 提示分數,這個很簡單,只是一個創建文字標簽的方法
MainLayer.prototype.scoreTip = function (p, message)
{
var director = cc.Director.getInstance();
var size = director.getWinSize();
var label = cc.LabelTTF.create(message, "Arial", 30);
label.setPosition(cc.p(p.x, p.y + 50));
label.setColor(cc.c3b(0, 255, 0));
label.setZOrder(10000);
this.rootNode.addChild(label);
label.runAction(cc.Sequence.create(cc.DelayTime.create(0.8), cc.CleanUp.create(label)));
return label;
};
這一篇就到這里;
CocosEditor開發工具:
CocosEditor,它是開發跨平臺的手機游戲工具,運行window/mac系統上,javascript腳本語言,基于cocos2d-x跨平臺游戲引擎, 集合代碼編輯,場景設計,動畫制作,字體設計,還有粒子,物理系統,地圖等等的,而且調試方便,和實時模擬;
CocosEditor 下載,介紹和教程:http://blog.csdn.net/touchsnow/article/details/19070665;
CocosEditor官方博客:http://blog.makeapp.co/;
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