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45 lines
1.5 KiB
CoffeeScript
45 lines
1.5 KiB
CoffeeScript
module.exports = class DebugDisplay extends createjs.Container
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layerPriority: 20
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subscriptions:
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'level-set-debug': 'onSetDebug'
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constructor: (options) ->
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super()
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@initialize()
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@canvasWidth = options.canvasWidth
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@canvasHeight = options.canvasHeight
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console.error "DebugDisplay needs canvasWidth/Height." unless @canvasWidth and @canvasHeight
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@build()
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@onSetDebug debug: true
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Backbone.Mediator.subscribe(channel, @[func], @) for channel, func of @subscriptions
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destroy: ->
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Backbone.Mediator.unsubscribe(channel, @[func], @) for channel, func of @subscriptions
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onSetDebug: (e) ->
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return if e.debug is @on
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@visible = @on = e.debug
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@fps = null
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@framesRenderedThisSecond = 0
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@lastFrameSecondStart = Date.now()
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build: ->
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@mouseEnabled = @mouseChildren = false
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@addChild @frameText = new createjs.Text "...", "20px Arial", "#FFF"
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@frameText.name = 'frame text'
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@frameText.x = @canvasWidth - 50
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@frameText.y = @canvasHeight - 25
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@frameText.alpha = 0.5
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updateFrame: (currentFrame) ->
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return unless @on
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++@framesRenderedThisSecond
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time = Date.now()
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diff = (time - @lastFrameSecondStart) / 1000
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if diff > 1
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@fps = Math.round @framesRenderedThisSecond / diff
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@lastFrameSecondStart = time
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@framesRenderedThisSecond = 0
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@frameText.text = Math.round(currentFrame) + (if @fps? then " - " + @fps + ' fps' else '')
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@frameText.x = @canvasWidth - @frameText.getMeasuredWidth() - 10
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