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107 lines
2.2 KiB
CoffeeScript
107 lines
2.2 KiB
CoffeeScript
10 years ago
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uuid = require "uuid"
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splitFilter = require "../lib/split-filter"
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nameIncrement = 1
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# Scene methods
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createLayer = (options = {}) ->
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if not options.name?
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name = "Layer #{nameIncrement++}"
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else
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name = options.name
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newUuid = uuid.v4()
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layerObject =
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name: name
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uuid: newUuid
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scene: this
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@layers[newUuid] = layerObject
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@orderedLayers.push layerObject
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if options.autoActivate ? true
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@setActiveLayer(newUuid)
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@emit "layer:added", layerObject
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return layerObject
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removeLayer = (uuid) ->
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# FIXME: Edge-case: removing the last layer in a scene?
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layerIndex = @orderedLayers.indexOf(@layers[uuid])
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delete @layers[uuid]
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[@orderedLayers, removedLayers] = splitFilter @orderedLayers, (layer) ->
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layer.uuid != uuid
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removedLayers.forEach (layerObject) =>
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@emit "layer:removed", layerObject
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# Remove all the objects on this layer as well...
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@orderedObjects
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.filter (object) -> object.layer == uuid
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.forEach (object) => @removeObject(object.uuid)
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if layerIndex == 0
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newActiveIndex = 0
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else
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newActiveIndex = layerIndex - 1
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@setActiveLayer(@orderedLayers[newActiveIndex]?.uuid)
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setActiveLayer = (uuid) ->
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@activeLayer = uuid
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@orderedObjects.forEach (object) ->
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object.editorFaded = (object.layer != uuid)
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@emit "layer:switched", @layers[uuid]
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getActiveLayer = ->
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return @layers[@activeLayer]
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# Object methods
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setLayer = (uuid) ->
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@emit "layer:switched", @scene.layers[uuid]
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@layer = uuid
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# Setup function
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API = (stage) ->
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stage.on "scene:added", (scene) ->
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scene._ignoredProperties.push "orderedLayers"
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scene.layers = {}
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scene.orderedLayers = []
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scene.createLayer = createLayer
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scene.removeLayer = removeLayer
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scene.setActiveLayer = setActiveLayer
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scene.getActiveLayer = getActiveLayer
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scene.on "object:added", (object) ->
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object.layer = scene.activeLayer
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object.setLayer = setLayer
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scene.on "object:switched", (object) ->
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if object.layer?
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scene.setActiveLayer(object.layer)
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process.nextTick ->
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# Default first layer
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scene.createLayer()
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stage.on "scene:removed", (scene) ->
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scene.orderedLayers.forEach (layer) ->
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scene.removeLayer(layer.uuid)
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return {}
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API.meta =
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name: "layers"
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module.exports = API
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# SPEC: list modifier for reordering the objects according to their layer...?
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