[Programming Game] presents a gift at the age of a new year. (The first prize is 10000 available points)
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Ignition[Ctrl + A select all tips: you can modify some code and then press run]
<HTML> <br/> <pead> </P> <p> <style type = "text/CSS"> <br/> body {<br/> background: #000000; <br/>}</P> <p>. firework {<br/> Height: 3px; <br/> width: 3px; <br/> overflow: hidden; <br/>}< br/> </style> </P> <p> <SCRIPT type = "text/JavaScript"> <br/> // position class <br /> // ================================================= ====< br/> function position (X, y) {<br/> This. X = x; <br/> This. y = y; <br/>}</P> <p> // velocity class <br/> // = =======================================================< Br /> Function Velocity (VX, vy) {<br/> This. VX = VX; <br/> This. vy = Vy; <br/>}</P> <p> // fallingbody class <br/> // ================== ======================================< br/> function fallingbody (color, initposition, initvelocity, inittime, lifespan, domnode, explodable) {<br/> This. initposition = initposition; <br/> This. initvelocity = initvelocity; <br/> This. inittime = inittime; <Br/> This. lifespan = lifespan; <br/> This. domnode = domnode; <br/> This. explodable = explodable; <br/> This. color = color; <br/>}</P> <p> fallingbody. prototype. show = function () {<br/> var interval = environment. clock-this. inittime; <br/> If (interval <0) return true; <br/> If (this. lifespan <= interval) {<br/> If (this. explodable) This. explode (250, 0.4); <br/> This. dispose (); <br/> return false; <br />}</P> <p> var x = math. ceil (this. initposition. X + this. initvelocity. VX * interval); <br/> var y = math. ceil (this. initposition. Y + this. initvelocity. vy * interval-environment. gravity * interval/2.0); <br/> If (! This. explodable) This. domnode. style. filter = "alpha (opacity =" + (1-interval/This. lifespan) * 100 + ")"; <br/> This. domnode. style. display = "Block"; <br/> This. domnode. style. left = x; <br/> This. domnode. style. top = y; <br/> return true; <br/>}</P> <p> fallingbody. prototype. dispose = function () {<br/> This. initposition = NULL; <br/> This. initvelocity = NULL; <br/> This. inittime = NULL; <br/> This. lifespa N = NULL; <br/> environment. screen. removechild (this. domnode); <br/> This. domnode = NULL; <br/>}</P> <p> fallingbody. prototype. explode = function (velocity, timespan) {<br/> var interval = environment. clock-this. inittime; <br/> var vx = This. initvelocity. VX; <br/> var Vy = This. initvelocity. vy-environment. gravity * interval; <br/> var x = math. ceil (this. initposition. X + this. initvelocity. VX * Inter Val); <br/> var y = math. ceil (this. initposition. Y + this. initvelocity. vy * interval-environment. gravity * interval/2.0); <br/> for (VAR I = 0; I <25; I ++) {<br/> var angle = math. random () * 360; <br/> environment. addfirework (this. color, new position (x, y), new velocity (VX + velocity * Math. cos (angle), Vy + velocity * Math. sin (angle), Environment. clock, timespan, false); <br/>}</P> <p> // init envir Ment <br/> // ====================================== ========< br/> var environment = new object (); </P> <p> environment. colors = ["# ff0000", "#00ff00", "# 000aff", "# ff00ff", "# ffa500", "# FFFF00", "#00ff00 ", "# ffffff", "# fffff0", "# ffa500", "#55ff66", "# ac9dfc", "# fff000", "# fffff0"]; </P> <p> environment. addfirework = function (color, initposition, initvelocity, inittime, lifespan, explodable) {<br/> var DIV = document. createeleme NT ("Div"); <br/> Div. style. position = "absolute"; <br/> Div. style. display = "NONE"; <br/> environment. screen. appendchild (DIV); <br/> Div. classname = "Firework"; <br/> Div. style. background = color; <br/> var fallingbody = new fallingbody (color, initposition, initvelocity, inittime, lifespan, Div, explodable); <br/> environment. fireworkarray. push (fallingbody); <br/>}</P> <p> environment. clocktick = Function () {<Br/> environment. clock + = environment. integer/1000.0; <br/> for (VAR I = environment. fireworkarray. length; I> 0; I --) {<br/> If (! Environment. fireworkarray [I-1]. show () environment. fireworkarray. splice (I-1, 1); <br/>}< br/> If (environment. fireworkarray. length> 0) setTimeout (environment. clocktick, environment. interval); <br/> else {<br/> environment. generate (); <br/> setTimeout (environment. clocktick, environment. interval); <br/>}</P> <p> environment. generate = function () {<br/> // environment. addfirework (environment. colors [math. floor (math. random () * environment. colors. length)], new position (300 + 600 * Math. random (), 600), new velocity (100,-330), Environment. clock, 1 + math. random () * 0.3, true); <br/> // environment. addfirework (environment. colors [math. floor (math. random () * environment. colors. length)], new position (300 + 600 * Math. random (), 600), new velocity (0,-300), Environment. clock, 1 + math. random () * 0.3, true); <br/> for (var k = 0; k <3; k ++) environment. addfirework (environment. colors [math. floor (math. random () * environment. colors. length)], new position (300 + 2 * Math. random (), 600), new velocity (20 * Math. random (),-360 + 100 * Math. random (), Environment. clock, 1-math.random () * 0.3, true); <br/> for (var k = 0; k <3; k ++) environment. addfirework (environment. colors [math. floor (math. random () * environment. colors. length)], new position (600 + 2 * Math. random (), 600), new velocity (20 * Math. random (),-360 + 100 * Math. random (), Environment. clock, 1-math.random () * 0.3, true); <br/>}</P> <p> window. onload = function () {<br/> environment. gravity =-10.0; <br/> environment. clock = 0.0; <br/> environment. interval = 10; // 0.1 seconds <br/> environment. screen = document. getelementsbytagname ("body") [0]; <br/> environment. fireworkarray = new array (); <br/> environment. generate (); <br/> setTimeout (environment. clocktick, environment. interval ); <br/>}< br/> </SCRIPT> <br/> </pead> <br/> <body> <br/> </body> <br/> </ptml> <br/>
Ignition[Ctrl + A select all tips: you can modify some code and then press run]
