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index.html
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<head>
<meta charset="utf-8">
<script src="./build/easycanvas.standalone.prod.js"></script>
<script src="./build/plugin.physics.standalone.prod.js"></script>
<script src="./build/plugin.webgl.standalone.prod.js"></script>
</head>
<style>
body, html {
margin: 0;
text-align: center;
background: black;
overflow: hidden;
}
canvas {
border: 1px solid grey;
height: 100%;
max-width: 100%;
background-color: #ccc;
background-image: url(https://c-zhuo.github.io/tanyitan/bg.jpg);
background-size: auto 100%;
background-position: 50% 50%;
}
</style>
<body>
<canvas id="el"></canvas>
</body>
<script>
// 在html直接写代码，不编译、不构建，不然应该用const的
var width = 400, height = 600, ballSize = 20;
// 记录鼠标轨迹
var mouse = {x: 300, y: 50};
var mouseRecord = function ($e) {
mouse.x = $e.canvasX;
mouse.y = Math.max(30, $e.canvasY);
};
// 游戏状态
var canShoot = true;
var score = 0, ballLeft = 0, ballCount = 5;
var blockArray = [];
var $Painter = new Easycanvas.painter();
// 图片
var BALL = 'https://raw.githubusercontent.com/c-zhuo/tanyitan/master/docs/ball.png';
var BLOCK = 'https://raw.githubusercontent.com/c-zhuo/tanyitan/master/docs/block.jpg';
var TRIANGLE = 'https://raw.githubusercontent.com/c-zhuo/tanyitan/master/docs/triangle.png';
// 用于碰撞检测
var BALL_TYPE = 1, BLOCK_TYPE = 2, BORDER_TYPE = 3, BOTTOM_TYPE = 4, BONUS_TYPE = 5;
// 初始化easycanvas实例
$Painter.register(el, {
webgl: {
fudgeFactor: 1,
},
width: width,
height: height,
events: {
mousemove: mouseRecord,
touchmove: mouseRecord,
mouseup: shoot,
touchend: shoot,
}
});
var BLOCK3D = $Painter.imgLoader('https://c-zhuo.github.io/tanyitan/stone.jpg');
var BALL3D = $Painter.imgLoader('https://c-zhuo.github.io/tanyitan/star.jpg');
$Painter.start();
$Painter.add({
name: '得分',
content: {
text: function () {
return '得分:' + score;
}
},
style: {
tx: 5, ty: 5, zIndex: 99,
textAlign: 'left', textVerticalAlign: 'top',
color: 'white'
}
});
$Painter.add({
name: '小球个数',
content: {
text: function () {
return '小球个数:' + ballCount;
}
},
style: {
tx: 395, ty: 5, zIndex: 99,
textAlign: 'right', textVerticalAlign: 'top',
color: 'white'
}
});
// 初始化easycanvas物理引擎
var $space = new Easycanvas.class.sprite({
name: '物理空间',
physics: {
gravity: 2,
accuracy: 2,
},
});
$Painter.add($space);
$space.launch();
// 显示瞄准轨迹
var startAim = function () {
for (var i = 0; i < 7; i ++) {
$Painter.add({
name: '瞄准小球',
content: {
// img: BALL,
},
data: {
gap: i / 6,
},
webgl: window.Easycanvas.webglShapes.ball({
r: ballSize / 2,
rx: function () {
return mouse.x;
},
ry: function () {
return mouse.x;
},
rz: function () {
return mouse.y;
},
img: BALL3D,
}),
style: {
tx: function () {
return 200 + (mouse.x - 200) * this.data.gap;
},
ty: function () {
return 20 + (mouse.y - 20) * this.data.gap;
},
tw: 20, th: 20,
opacity: 0.4,
},
hooks: {
shoot: function () {
this.remove();
}
}
});
}
};
startAim();
function shoot () {
if (!canShoot) return;
$Painter.broadcast('shoot');
canShoot = false;
// 防止过程中鼠标移动引起多个小球方向不同
var currentMouse = JSON.parse(JSON.stringify(mouse));
// 防止过程中增加了小球数量
var currentBallCount = ballCount;
for (var i = 0; i < currentBallCount; i++) {
setTimeout(function () {
addBall(currentMouse);
}, i * 100);
}
mouse = {x: 300, y: 50};
};
function addBall (mouse) {
ballLeft++;
var $ball = new Easycanvas.class.sprite({
name: '物理小球',
content: {
// img: BALL,
},
physics: {
shape: [
// 形状是一个以(ballSize / 2, ballSize / 2)为圆心的，半径也是ballSize / 2的圆
[ballSize / 2, ballSize / 2, ballSize / 2],
],
mass: 1, // 质量
friction: 0.2, // 摩擦（摩擦太大了会损失能量）
elasticity: 0.8, // 弹性
collisionType: BALL_TYPE,
},
style: {
tw: ballSize, th: ballSize,
sx: 0, sy: 0,
tx: 200,
ty: 20,
zIndex: 1,
},
webgl: window.Easycanvas.webglShapes.ball({
r: ballSize / 2,
rx: function () {
return -this.style.rotate / 3;
},
ry: function () {
return -this.style.rotate;
},
rz: function () {
return -this.style.rotate / 2;
},
img: BALL3D,
}),
hooks: {
physicsCollisionBegin: function ($other, collisionType) {
switch (collisionType) {
case BALL_TYPE:
return true;
case BOTTOM_TYPE:
var ball = this;
var block = $other;
if (ball.toRemove) {
return;
}
ball.toRemove = true;
ball.style.opacity = Easycanvas.transition.linear(1, 0, 500);
setTimeout(function () {
ball.physicsOff();
ball.remove();
ballLeft--;
if (ballLeft === 0) {
canShoot = true;
blockArray.forEach(function (block) {
block.physicsOff();
if (block.style.ty < 100) {
if (block.name === '物理方块') {
canShoot = false;
} else {
if (block.$canvas) {
block.remove();
}
}
} else {
setTimeout(function () {
block.style.ty = block.style.ty();
block.physicsOn();
}, 300)
}
block.style.ty = Easycanvas.transition.linear(block.style.ty, block.style.ty - 50, 100 + Math.random() * 200);
});
if (!canShoot) {
alert('You lose');
} else {
setTimeout(startAim, 300);
addBlock(5 + score / 10, true);
Math.random() < 0.5 && addBlock(5 + score / 10, true);
Math.random() < 0.3 && addBlock(5 + score / 9, true);
Math.random() < 0.2 && addBlock(5 + score / 8, true);
Math.random() < 0.3 && addBonus();
Math.random() < 0.3 && addBonus();
}
}
}, 500);
return;
}
},
physicsCollisionPreSolve: function ($other, collisionType) {
switch (collisionType) {
case BLOCK_TYPE:
if (Math.abs(this.physicsGetVelocity().y) < 1) {
// 防止小球停到方块上
this.physicsSetVelocity({
x: Math.random() * 10 - 5,
y: -300,
});
}
return;
}
},
physicsCollisionSeparate: function ($other, collisionType) {
// 撞过一次就重置作用力（这样只剩下重力了，就开始往下掉）
this.physicsResetForces();
switch (collisionType) {
case BLOCK_TYPE:
var block = $other;
// 碰撞效果
var deltaXScale = Math.random() * 0.6 - 0.3;
block.webgl.scaleX = Easycanvas.transition.pendulum(1 + deltaXScale, 1, 300);
block.webgl.scaleY = Easycanvas.transition.pendulum(1 - deltaXScale, 1, 300);
block.webgl.scaleZ = Easycanvas.transition.pendulum(1.3, 1, 300);
block.webgl.rx = Easycanvas.transition.pendulum(30 + deltaXScale * 50, 20, 300);
// 这里直接通过父对象从子对象拿数据，这种数据的依赖方式不好，但是这么简单个应用，无所谓了
// 更好的是例如通过easycanvas的自定义事件广播下去
block.children[0].content.text--;
score++;
if (!block.children[0].content.text) {
// 把方块撞成0了，先隐藏
block.physicsOff();
block.children[0].style.visible = false;
blockArray.splice(blockArray.indexOf(block), 1);
block.webgl.ty = Easycanvas.transition.linear(this.style.ty + 20, height / 2, Math.random() * 200 + 1000);
block.webgl.tz = Easycanvas.transition.linear(0, 10100, Math.random() * 400 + 200);
block.webgl.rx = Easycanvas.transition.linear(0, 360, 600);
setTimeout(function () {
block.remove();
}, 600);
}
return;
case BONUS_TYPE:
var bonus = $other;
// 一个球被连续撞，只加一次
if (bonus.used) return false;
bonus.used = 1;
bonus.physicsOff();
bonus.remove();
blockArray.splice(blockArray.indexOf(bonus), 1);
ballCount++;
return;
}
}
}
});
$space.add($ball);
$ball.physicsOn();
// 抵消重力
$ball.physicsApplyForce({x: 0, y: -1000}, {x: 0, y: 0});
// 初速度
var speed = {
x: (mouse.x - 200) / (mouse.y - 20),
y: 1
};
// 修正速度，确保从各个角度射出小球的速度差不多
var muti = Math.sqrt(Math.pow(speed.x, 2) + Math.pow(speed.y, 2)) / 700;
$ball.physicsSetVelocity({
x: speed.x / muti,
y: speed.y / muti,
});
}
// 防止方块重叠，记录上一次方块的X坐标
var lastBlockPositionX = 50;
var transitionTime = 500;
function addBlock (max, boolAddToBottom) {
var deg = Math.floor(Math.random() * 360);
var tx = lastBlockPositionX + Math.floor(Math.random() * 20 - 10);
var ty = boolAddToBottom ? 500 : height - 100 - Math.floor(Math.random() * 100);
var sprite = $space.add(new Easycanvas.class.sprite({
name: '物理方块',
content: {
// img: BLOCK,
},
physics: {
shape: [
[[0, 0], [30, 0], [30, 30], [0, 30], [0, 0]],
],
mass: 1,
friction: 0.1,
elasticity: 0.9,
collisionType: BLOCK_TYPE,
static: true,
},
style: {
tw: 30, th: 30,
tx: tx, ty: ty,
locate: 'lt',
zIndex: Math.random(),
rotate: deg,
},
children: [{
name: '次数',
content: {
text: Math.floor(Math.random() * max) + 1,
},
style: {
visible: false,
color: 'yellow',
textAlign: 'center',
textVerticalAlign: 'middle',
textFont: '16px Arial',
tx: 15, ty: 15,
zIndex: 2,
}
}],
webgl: window.Easycanvas.webglShapes.block({
a: 30, b: 30, c: 30,
rz: -deg,
rx: Easycanvas.transition.linear(Math.random() * 1000, 20, Math.random() * 200 + transitionTime),
ry: Easycanvas.transition.linear(Math.random() * 1000, 20, Math.random() * 200 + transitionTime),
tx: tx + 20,
ty: Easycanvas.transition.linear(Math.random() * 300, ty + 10, Math.random() * 200 + transitionTime),
tz: Easycanvas.transition.linear(-10000, 0, Math.random() * 200 + transitionTime),
img: BLOCK3D,
// colors: [255,255,100,10],
}),
}));
setTimeout(function () {
sprite.children[0].style.visible = true;
sprite.webgl.ty = function () {
return sprite.getStyle('ty') + 10;
};
}, transitionTime + 200);
sprite.physicsOn();
blockArray.push(sprite);
lastBlockPositionX += 50;
if (lastBlockPositionX > 350) {
lastBlockPositionX = 50;
}
}
function addBonus () {
var sprite = $space.add(new Easycanvas.class.sprite({
name: '奖励小球',
content: {
// img: BALL,
},
physics: {
shape: [
[ballSize / 2, ballSize / 2, ballSize / 2],
],
mass: 1,
friction: 0.1,
elasticity: 0.5,
collisionType: BONUS_TYPE,
static: true,
},
webgl: window.Easycanvas.webglShapes.ball({
r: ballSize / 1.5,
rz: Easycanvas.transition.linear(0, 360, 1800).loop(),
ry: Easycanvas.transition.linear(0, 360, 2800).loop(),
rz: Easycanvas.transition.linear(0, 360, 3800).loop(),
img: BALL3D,
}),
style: {
tw: 30, th: 30,
tx: lastBlockPositionX + Math.floor(Math.random() * 20 - 10),
ty: 500,
locate: 'center',
zIndex: 2,
fv: Easycanvas.transition.pendulum(0, 0.2, 200).loop(),
fh: Easycanvas.transition.pendulum(0.2, 0, 200).loop(),
},
}));
sprite.physicsOn();
blockArray.push(sprite);
lastBlockPositionX += 50;
if (lastBlockPositionX > 350) {
lastBlockPositionX = 50;
}
}
// 上半部分的边，摩擦小、弹性大
var borderSprite = $space.add(new Easycanvas.class.sprite({
name: '边界1',
physics: {
shape: [
[[0, 0], [width, 0]],
[[0, 0], [0, height * 0.9]],
[[width, 0], [width, height * 0.9]],
],
friction: 0.1,
elasticity: 0.8,
collisionType: BORDER_TYPE,
static: true
},
style: {
tx: 0, ty: 0, tw: width, th: height,
locate: 'lt',
},
}));
borderSprite.physicsOn();
// 下半部分的边，摩擦大、弹性小
var bottomSprite = $space.add(new Easycanvas.class.sprite({
name: '边界2',
physics: {
shape: [
[[0, height], [width, height]],
[[0, height * 0.9], [0, height]],
[[width, height * 0.9], [width, height]],
],
friction: 5,
elasticity: 0,
collisionType: BOTTOM_TYPE,
static: true
},
style: {
tx: 0, ty: 0, tw: width, th: height,
locate: 'lt',
},
}));
bottomSprite.physicsOn();
// 第一关7个方块
for (var i = 0; i < 7; i++) {
addBlock(5);
}
// 阻止微信浏览器的默认下拉
document.body.addEventListener('touchmove' , function (e) {
e.preventDefault();
});
</script>