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@@ -1,35 +1,38 @@ | ||
agent = (x, y, heading, vel) -> | ||
this.x = x | ||
this.y = y | ||
class Agent | ||
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this.vel = vel; | ||
@maxVel = 3; | ||
@minVel = 0.5; | ||
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this.maxVel = 3; | ||
this.minVel = 0.5; | ||
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this.evalHeading = (heading) -> | ||
@evalHeading = (heading) -> | ||
heading - Math.floor (heading / 2*Math.PI) * heading | ||
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this.heading = this.evalHeading heading | ||
constructor: (@x, @y, @heading, @vel) -> | ||
@x = x | ||
@y = y | ||
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@vel = vel; | ||
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@maxVel = 3; | ||
@minVel = 0.5; | ||
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this.update = (agents, width, height) -> | ||
this.x += Math.cos(this.heading)*this.vel | ||
this.y += Math.sin(this.heading)*this.vel | ||
@heading = Agent.evalHeading heading | ||
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update: (agents, width, height) -> | ||
@x += Math.cos(@heading)*@vel | ||
@y += Math.sin(@heading)*@vel | ||
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randomVariance = (variance) -> (Math.random() - 0.5)*(2*variance) | ||
this.heading = this.heading += randomVariance 0.25 | ||
this.vel = this.vel += randomVariance 0.05 | ||
@heading = @heading += randomVariance 0.25 | ||
@vel = @vel += randomVariance 0.05 | ||
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if this.vel > this.maxVel then this.vel = this.maxVel | ||
else if this.vel < this.minVel then this.vel = this.minVel | ||
if @vel > @maxVel then @vel = Agent.maxVel | ||
else if @vel < @minVel then @vel = Agent.minVel | ||
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this.changeHeading = (delta) -> | ||
this.heading = this.evalHeading (this.heading + delta) | ||
changeHeading: (delta) -> | ||
@heading = Agent.evalHeading @heading + delta | ||
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this.draw = (ctx) -> | ||
draw: (ctx) -> | ||
ctx.lineWidth = 2 | ||
ctx.beginPath() | ||
ctx.arc(this.x, this.y, 2, 0, 2 * Math.PI, false) | ||
ctx.arc(@x, @y, 2, 0, 2 * Math.PI, false) | ||
ctx.fill() | ||
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this |
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@@ -1,28 +1,25 @@ | ||
disp = (width, height) -> | ||
class Disp | ||
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this.width = parseInt width | ||
this.height = parseInt height | ||
constructor: (@width, @height) -> | ||
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this.$body = $ 'body' | ||
@$body = $ 'body' | ||
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@$body.append ( | ||
@$canvas = | ||
$('<canvas>').attr('width', width).attr('height', height) | ||
) | ||
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this.$body.append ( | ||
this.$canvas = | ||
$('<canvas>').attr('width', width).attr('height', height) | ||
) | ||
@canvas = @$canvas.get 0 | ||
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this.canvas = this.$canvas.get 0 | ||
@ctx = @canvas.getContext '2d' | ||
@ctx.lineWidth = 4 | ||
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this.ctx = this.canvas.getContext '2d' | ||
this.ctx.lineWidth = 4 | ||
clear:() -> | ||
@ctx.clearRect 0, 0, @width, @height | ||
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this.clear =() -> | ||
this.ctx.clearRect 0, 0, this.width, this.height | ||
draw: () -> | ||
@drawBorder @ctx | ||
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this.draw = () -> | ||
this.drawBorder(this.ctx) | ||
drawBorder: () -> | ||
@ctx.strokeRect 0, 0, @width, @height | ||
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this.drawBorder = () -> | ||
this.ctx.strokeRect 0, 0, width, height | ||
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this |
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@@ -1,3 +1,3 @@ | ||
$ -> | ||
theGame = new tag() | ||
theGame = new Tag | ||
theGame.anim() |
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@@ -1,44 +1,44 @@ | ||
window.requestAnimationFrame = | ||
window.requestAnimationFrame or | ||
window.mozRequestAnimationFrame or | ||
window.webkitRequestAnimationFrame or | ||
window.msRequestAnimationFrame | ||
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tag = () -> | ||
this.display = new disp 1024, 768 | ||
this.ctx = this.display.ctx | ||
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thisTag = this | ||
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this.agents = [] | ||
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for i in [0..1000] | ||
agentX = Math.random()*this.display.width | ||
agentY = Math.random()*this.display.height | ||
agentHeading = Math.random()*2*Math.PI | ||
agentSpeed = Math.random()*5 | ||
this.agents.push new | ||
agent agentX, agentY, agentHeading, agentSpeed | ||
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this.anim = () -> | ||
window.requestAnimationFrame thisTag.step | ||
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this.updateAgents = (agents, width, height) -> | ||
for a in this.agents | ||
class Tag | ||
constructor: -> | ||
@display = new Disp 1024, 768 | ||
@ctx = this.display.ctx | ||
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@agents = [] | ||
thisTag = @ | ||
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for i in [0..500] | ||
agentX = Math.random() * @display.width | ||
agentY = Math.random() * @display.height | ||
agentHeading = Math.random() * 2 * Math.PI | ||
agentSpeed = Math.random() * 5 | ||
@agents.push new | ||
Agent agentX, agentY, agentHeading, agentSpeed | ||
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window.requestAnimationFrame = | ||
window.requestAnimationFrame or | ||
window.mozRequestAnimationFrame or | ||
window.webkitRequestAnimationFrame or | ||
window.msRequestAnimationFrame | ||
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@step = -> | ||
thisTag.draw() | ||
window.requestAnimationFrame thisTag.step | ||
thisTag | ||
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anim: -> | ||
@step() | ||
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updateAgents: (agents, width, height) -> | ||
for a in @agents | ||
a.update agents, width, height | ||
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this.drawAgents = () -> | ||
for a in this.agents | ||
drawAgents: -> | ||
for a in @agents | ||
a.draw this.ctx | ||
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this.draw = () -> | ||
this.display.clear() | ||
this.updateAgents this.agents, this.display.width, this.display.height | ||
this.drawAgents() | ||
this.display.draw() | ||
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this.step = () -> | ||
thisTag.draw() | ||
window.requestAnimationFrame thisTag.step | ||
draw: -> | ||
@display.clear() | ||
@updateAgents @agents, @display.width, @display.height | ||
@drawAgents() | ||
@display.draw() | ||
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this |