function health(amount) {
return bs.component('health')
.on('init', function() {
this.health = amount
this.dead = false
})
.on('damaged', function(dmg) {
this.health -= dmg
if (!this.dead && this.health <= 0) {
this.dead = true
this.trigger('died')
}
})
}
function createBody(body, fixture) {
return bs.component('body')
.needs('attached')
.needs('physical')
.on('init', function() {
this.body = this.world.CreateBody(body.call(this, this.world))
this.fixture = this.body.CreateFixture(fixture.call(this, this.body, this.world))
})
.on('destroy', function() {
this.body.DestroyFixture(this.fixture)
this.world.DestroyBody(this.body)
this.game.remove(this)
delete this.body
delete this.world
delete this.game
})
}
function pellet(c) {
var pelletMax = 40
return bs.define()
.use(require('../components/attached'))
.use(require('../components/physical'))
.use(require('../components/body')(
function createBody() {
var bd = new b2BodyDef
bd.position = new b2Vec2(0, -5)
bd.type = b2Body.b2_dynamicBody
bd.userData = {}
bd.fixedRotation = true
return bd
},
function createFixture() {
var fd = new b2FixtureDef
fd.restitution = 0.5
fd.shape = new b2CircleShape(0.5/3)
this.r = 5
return fd
}
))
.use(require('../components/bounce-burst'))
.use(bs.component()
.on('init', function() {
pelletCounter += 1
if (pelletCounter > pelletMax) this.flagged = true
this.c = c
this.t = 140 - ((Math.random() * 40)|0)
})
.on('tick', function() {
this.t -= 1
if (!this.t) this.flagged = true
})
.on('destroy', function() {
pelletCounter -= 1
})
)
.use(require('../components/draw-circle')(5))
.use(require('../components/gravity'))
}
module.exports = function drawCircle(r, c) {
var tau = Math.PI * 2
this.c = this.c || c
this.r = this.r || (+r|0) || 15
return bs.component()
.needs('attached')
.needs('body')
.on('draw', function(ctx) {
ctx.fillStyle = this.c
ctx.beginPath()
ctx.arc(
this.body.m_xf.position.x * 30 - this.game.camera.pos[0]
, this.body.m_xf.position.y * 30 - this.game.camera.pos[1]
, this.r
, 0
, tau
, true
)
ctx.closePath()
ctx.fill()
})
}
var bs = require('bindlestiff')
var Bullet = require('./player-bullet')
var tau = Math.PI * 2
var round = Math.round
var abs = Math.abs
var b2CircleShape = Box2D.Collision.Shapes.b2CircleShape
var b2FixtureDef = Box2D.Dynamics.b2FixtureDef
var b2BodyDef = Box2D.Dynamics.b2BodyDef
var b2Vec2 = Box2D.Common.Math.b2Vec2
var b2Body = Box2D.Dynamics.b2Body
var tempPosition = [0,0]
var player = bs.component([
'player'
, 'body'
])
.needs('physical')
.needs('attached')
.needs('controllable')
.on('init', function() {
var x = this.game.width / 60
var y = this.game.height / 60
var def = new b2BodyDef
def.position = new b2Vec2(20, 0)
def.type = b2Body.b2_dynamicBody
def.userData = {}
def.fixedRotation = true
this.flinch = 0
var bs = require('bindlestiff')
module.exports = PhysicsSystem
function PhysicsSystem(game) {
if (!(this instanceof PhysicsSystem)) return new PhysicsSystem(game)
this.game = game
}
PhysicsSystem.prototype.tick = function() {
var physical = this.game.manager.find('physical')
for (var i = 0, l = physical.length; i < l; i += 1) {
var p = physical[i]
p.position[0] += p.speed[0]
p.position[1] += p.speed[1]
}
}
PhysicsSystem.component = bs.component('physical')
.on('init', function() {
this.position = new Float64Array(2)
this.speed = new Float64Array(2)
})