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https://github.com/codeninjasllc/codecombat.git
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94 lines
2.9 KiB
CoffeeScript
94 lines
2.9 KiB
CoffeeScript
CocoClass = require 'core/CocoClass'
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module.exports = class CoordinateGrid extends CocoClass
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subscriptions:
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'level:toggle-grid': 'onToggleGrid'
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shortcuts:
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'ctrl+g, ⌘+g': 'onToggleGrid'
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constructor: (options, worldSize) ->
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super()
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options ?= {}
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@camera = options.camera
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@layer = options.layer
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@textLayer = options.textLayer
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console.error @toString(), 'needs a camera.' unless @camera
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console.error @toString(), 'needs a layer.' unless @layer
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console.error @toString(), 'needs a textLayer.' unless @textLayer
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@build worldSize
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destroy: ->
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super()
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toString: -> '<CoordinateGrid>'
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build: (worldSize) ->
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worldWidth = worldSize[0] or 80
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worldHeight = worldSize[1] or 68
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@gridContainer = new createjs.Container()
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@gridShape = new createjs.Shape()
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@gridContainer.addChild @gridShape
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@gridContainer.mouseEnabled = false
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@gridShape.alpha = 0.125
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@gridShape.graphics.setStrokeStyle 1
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@gridShape.graphics.beginStroke 'blue'
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gridSize = Math.round(worldWidth / 20)
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wopStart = x: 0, y: 0
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wopEnd = x: worldWidth, y: worldHeight
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supStart = @camera.worldToSurface wopStart
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supEnd = @camera.worldToSurface wopEnd
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wop = x: wopStart.x, y: wopStart.y
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@labels = []
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linesDrawn = 0
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while wop.x <= wopEnd.x
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sup = @camera.worldToSurface wop
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@gridShape.graphics.mt(sup.x, supStart.y).lt(sup.x, supEnd.y)
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if ++linesDrawn % 2
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t = new createjs.Text(wop.x.toFixed(0), '16px Arial', 'blue')
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t.textAlign = 'center'
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t.textBaseline = 'bottom'
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t.x = sup.x
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t.y = supStart.y
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t.alpha = 0.75
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@labels.push t
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wop.x += gridSize
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if wopEnd.x < wop.x <= wopEnd.x - gridSize / 2
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wop.x = wopEnd.x
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linesDrawn = 0
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while wop.y <= wopEnd.y
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sup = @camera.worldToSurface wop
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@gridShape.graphics.mt(supStart.x, sup.y).lt(supEnd.x, sup.y)
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if ++linesDrawn % 2
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t = new createjs.Text(wop.y.toFixed(0), '16px Arial', 'blue')
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t.textAlign = 'left'
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t.textBaseline = 'middle'
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t.x = 0
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t.y = sup.y
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t.alpha = 0.75
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@labels.push t
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wop.y += gridSize
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if wopEnd.y < wop.y <= wopEnd.y - gridSize / 2
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wop.y = wopEnd.y
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@gridShape.graphics.endStroke()
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bounds = x: supStart.x, y: supEnd.y, width: supEnd.x - supStart.x, height: supStart.y - supEnd.y
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return unless bounds?.width and bounds.height
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@gridContainer.cache bounds.x, bounds.y, bounds.width, bounds.height
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showGrid: ->
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return if @gridShowing()
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@layer.addChild @gridContainer
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@textLayer.addChild label for label in @labels
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hideGrid: ->
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return unless @gridShowing()
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@layer.removeChild @gridContainer
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@textLayer.removeChild label for label in @labels
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gridShowing: ->
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@gridContainer?.parent?
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onToggleGrid: (e) ->
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e?.preventDefault?()
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if @gridShowing() then @hideGrid() else @showGrid()
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