JAVASCRIPT
$(function() {
$('body').css('background-color', '#222');
var FPS = 60;
var T = TT = 0;
var canvas = $('<canvas>');
var c = canvas[0].getContext('2d');
var W = _W = 360;
var H = _H = 512;
var score = 0;
var dim = {
w: $(window).width(),
h: $(window).height()
};
$(canvas).attr({
'width': W,
'height': H
});
_H = dim.h;
_W = dim.h * W / H;
if (W / H > dim.w / dim.h) {
_W = dim.w;
_H = dim.w * H / W;
};
$(canvas).css({
'position': 'absolute',
'top': (dim.h - _H) / 2,
'left': (dim.w - _W) / 2,
'width': _W,
'height': _H
});
$('body').append(canvas);
var camY = 0;
var died = false;
var dCircle = function(coords, radius, color) {
c.beginPath();
c.fillStyle = color;
c.arc(coords.x, coords.y, radius, 0, 2 * Math.PI);
c.fill();
};
var coord = function(dx, dy) {
return {
x: dx,
y: H + camY - dy
};
};
var col = ['#F39', '#3FF', '#FF3', '#A0F'];
var gCol = function(index) {
var n = index;
return col[n % 4];
};
var rRange = function(x1, x2) {
return x1 + Math.random() * (x2 - x1);
};
var choose = function() {
return arguments[Math.floor(arguments.length * Math.random())];
};
var rCol = function() {
return col[Math.floor(4 * Math.random())];
};
var repeat = function(func, rep) {
for (var _rep = 0; _rep < rep; _rep++) {
func();
};
};
var getDots = function(xy1, xy2) {
return {
d: Math.sqrt(Math.pow(xy1.x - xy2.x, 2) + Math.pow(xy1.y - xy2.y, 2)),
a: Math.atan2(xy1.y - xy2.y, xy2.x - xy1.x)
};
};
var die = function() {
died = true;
repeat(function() {
newParticle(p.x, p.y + 5);
}, 14);
TT = 1;
};
var colIndex = Math.floor(4 * Math.random());
var p = {
x: W / 2,
y: H / 4,
r: 10,
c: gCol(colIndex),
spd: 0,
spdMax: 6,
acc: 0
};
var objects = [];
var newObject = function(x, y, r, c) {
var o = {
x: x,
y: y,
r: r,
c: c,
t: 0,
destroyed: false
};
o.move = function() {};
o.draw = function() {
dCircle(coord(o.x, o.y), o.r, o.c);
};
o.destroy = function() {
o.destroyed = true;
};
o.update = function() {
o.move();
o.draw();
if (o.y + 100 < camY) {
o.destroy();
};
o.t++;
};
objects.push(o);
return o;
};
var modAng = function(x) {
var y = x;
while (y < 0) {
y += Math.PI * 2;
};
return y % (Math.PI * 2);
};
var obstacles = {
n: 0,
sep: 350
};
var cspd = 1;
var new8 = function(y, ang, dir, col) {
var o8 = newObject(W / 2, 100 + obstacles.sep * y, 10, gCol(col));
o8.cx = o8.x;
o8.cy = o8.y;
o8.rad8 = 80;
o8.d = dir;
o8.a = ang;
o8.move = function() {
with(o8) {
x = cx + 1.5 * rad8 * Math.cos(a);
y = cy + 0.7 * rad8 * Math.sin(2 * a);
a += d * 0.02;
};
if (!died && p.c != o8.c && getDots(coord(p.x, p.y), coord(o8.x, o8.y)).d < p.r + o8.r) {
die();
};
};
};
var newW8 = function(y) {
var ddir = choose(-1, 1);
for (var i = 0; i < Math.PI * 2; i += Math.PI * 2 / 20) {
new8(y, i, ddir, Math.floor(8 * (i / (Math.PI * 2))));
};
};
var newC1 = function(y, rad, ospd, dir) {
var c1 = newObject(W / 2, 100 + obstacles.sep * y, rad, Math.floor(4 * Math.random()));
c1.angle = Math.PI * 2 * Math.floor(4 * Math.random());
c1.spd = dir * cspd * ospd;
c1.w = c1.r * 15 / 100;
c1.draw = function() {
var co = coord(c1.x, c1.y);
c.lineWidth = c1.w;
for (var j = 0; j < 4; j++) {
c.beginPath();
c.strokeStyle = gCol(j + c1.c);
var a = modAng(c1.angle + Math.PI / 2 * j);
var a2 = modAng(a + Math.PI / 2);
if (gCol(j + c1.c) != p.c && !died) {
var dots = getDots(co, coord(p.x, p.y));
if (dots.d + p.r > c1.r - c1.w / 2 && dots.d - p.r < c1.r + c1.w / 2) {
var pa = modAng(-dots.a);
if (pa > a && pa < a2) {
die();
};
};
};
c.arc(co.x, co.y, c1.r, a, a2);
c.stroke();
};
c1.angle += c1.spd * Math.PI / 180;
};
};
var newParticle = function(x, y) {
var part = newObject(x, y, 5, rCol());
part.g = 0.6;
part.hspd = rRange(-10, 10);
part.vspd = rRange(10, 20);
part.move = function() {
with(part) {
vspd -= g;
x += hspd;
y += vspd;
if (x < 0 || x > W) {
hspd *= -1;
};
if (y < camY) {
destroy();
};
};
};
};
var newSwitch = function(n) {
var sw = newObject(W / 2, 100 + obstacles.sep * n + obstacles.sep / 2, 15, '#FFF');
sw.move = function() {
if (getDots({
x: sw.x,
y: sw.y
}, {
x: p.x,
y: p.y
}).d < p.r + sw.r) {
p.c = gCol(++colIndex);
sw.destroy();
};
};
sw.draw = function() {
var co = coord(sw.x, sw.y);
for (var i = 0; i < 4; i++) {
var a = i * Math.PI / 2;
c.fillStyle = col[i];
c.beginPath();
c.lineTo(co.x, co.y);
c.arc(co.x, co.y, sw.r, a, a + Math.PI / 2);
c.lineTo(co.x, co.y);
c.fill();
};
};
};
var newStar = function(n) {
var st = newObject(W / 2, 100 + obstacles.sep * n, 15, '#DDD');
st.score = choose(1, 1, 1, 1, 1, 1, 10);
st.a = 0;
st.rs = st.r;
st.move = function() {
if (getDots({
x: p.x,
y: p.y
}, {
x: st.x,
y: st.y
}).d < st.r) {
score += st.score;
st.destroy();
};
st.r = st.rs + 1.2 * Math.sin((st.a++) / 180 * Math.PI * 4);
};
st.draw = function() {
dStar(st.x, st.y, st.r, 0, st.c, 1, st.score == 1);
};
};
var dStar = function(x, y, r1, ang, col, alpha, outline) {
var co = coord(x, y);
c.fillStyle = col;
c.strokeStyle = col;
c.lineWidth = 2;
c.globalAlpha = alpha;
c.beginPath();
for (var j = 0; j <= 5; j++) {
var a1 = j * Math.PI * 2 / 5 - Math.PI / 2 - ang;
var a2 = a1 + Math.PI / 5;
var r2 = r1 * 0.5;
c.lineTo(co.x + r1 * Math.cos(a1), co.y + r1 * Math.sin(a1));
c.lineTo(co.x + r2 * Math.cos(a2), co.y + r2 * Math.sin(a2));
};
if (outline) {
c.fill();
} else {
c.stroke();
};
c.globalAlpha = 1;
};
p.yy = p.y;
var clicked = false;
$(canvas).click(function() {
clicked = true;
});
setInterval(function() {
c.fillStyle = '#222';
c.fillRect(0, 0, W, H);
c.fillStyle = '#FFF';
c.font = '30px Arial';
c.textAlign = 'left';
c.fillText(score, 10, 30);
c.font = '45px Arial';
c.textAlign = 'center';
c.fillText('COLOR', W / 2, coord(0, 250).y);
c.fillText('SWITCH', W / 2, coord(0, 200).y);
while (obstacles.n < 2 + Math.floor(camY / obstacles.sep)) {
obstacles.n += 1;
switch (choose(0, 0, 0, 0, 1, 2, 2, 2)) {
case 0:
newC1(obstacles.n, choose(100, 100, 70), 1, choose(-1, 1));
break;
case 1:
newC1(obstacles.n, 100, 2 / 3, 1);
newC1(obstacles.n, 70, 1, -1);
break;
case 2:
newW8(obstacles.n);
break;
};
newSwitch(obstacles.n);
newStar(obstacles.n);
cspd *= 1.04;
};
if (!died) {
if (clicked) {
p.spd = p.spdMax;
if (p.acc == 0) {
p.spd *= 1.2;
p.acc = -0.3;
};
};
with(p) {
spd = Math.max(spd + acc, -spdMax);
y = Math.max(y + spd, yy);
if (y < camY) {
die();
};
dCircle(coord(x, y), r, c);
};
};
for (var i in objects) {
objects[i].update();
};
for (var i = objects.length - 1; i >= 0; i--) {
if (objects[i].destroyed) {
objects.splice(i, 1);
};
};
camY = Math.max(camY, p.y - 250);
T += TT;
if (T > 70) {
c.globalAlpha = 0.7;
c.fillStyle = '#000';
c.fillRect(0, 0, W, H);
c.globalAlpha = 1;
c.fillStyle = '#000';
c.strokeStyle = '#EEE';
c.lineWidth = 2;
c.fillText('TAP TO', W / 2, H / 2);
c.strokeText('TAP TO', W / 2, H / 2);
c.fillText('RESTART', W / 2, H / 2 + 50);
c.strokeText('RESTART', W / 2, H / 2 + 50);
if (clicked) {
score = 0;
T = 0;
TT = 0;
camY = 0;
cspd = 1;
died = false;
p.y = H * 1 / 4;
p.acc = 0;
p.spd = 0;
objects = [];
obstacles.n = 0;
};
};
clicked = false;
}, 1000 / FPS);
});
1 Response