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+ -------------------------------------------------------------------------------
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+ -- Copyright (c) 2013, Esoteric Software
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+ -- All rights reserved.
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+ --
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+ -- Redistribution and use in source and binary forms, with or without
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+ -- modification, are permitted provided that the following conditions are met:
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+ --
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+ -- 1. Redistributions of source code must retain the above copyright notice, this
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+ -- list of conditions and the following disclaimer.
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+ -- 2. Redistributions in binary form must reproduce the above copyright notice,
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+ -- this list of conditions and the following disclaimer in the documentation
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+ -- and/or other materials provided with the distribution.
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+ --
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+ -- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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+ -- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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+ -- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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+ -- DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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+ -- ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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+ -- (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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+ -- LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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+ -- ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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+ -- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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+ -- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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+ ------------------------------------------------------------------------------
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+
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+spine = {}
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+
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+spine.utils = require "spine-lua.utils"
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+spine.SkeletonJson = require "spine-lua.SkeletonJson"
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+spine.SkeletonData = require "spine-lua.SkeletonData"
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+spine.BoneData = require "spine-lua.BoneData"
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+spine.SlotData = require "spine-lua.SlotData"
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+spine.Skin = require "spine-lua.Skin"
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+spine.RegionAttachment = require "spine-lua.RegionAttachment"
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+spine.Skeleton = require "spine-lua.Skeleton"
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+spine.Bone = require "spine-lua.Bone"
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+spine.Slot = require "spine-lua.Slot"
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+spine.AttachmentLoader = require "spine-lua.AttachmentLoader"
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+spine.Animation = require "spine-lua.Animation"
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+
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+spine.utils.readFile = function (fileName, base)
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+ if not base then base = system.ResourceDirectory end
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+ local path = system.pathForFile(fileName, base)
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+ local file = io.open(path, "r")
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+ if not file then return nil end
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+ local contents = file:read("*a")
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+ io.close(file)
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+ return contents
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+end
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+
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+local json = require "json"
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+spine.utils.readJSON = function (text)
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+ return json.decode(text)
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+end
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+
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+spine.Skeleton.failed = {} -- Placeholder for an image that failed to load.
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+
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+spine.Skeleton.new_super = spine.Skeleton.new
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+function spine.Skeleton.new (skeletonData, group)
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+ -- Skeleton extends a group.
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+ local self = spine.Skeleton.new_super(skeletonData)
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+ self = spine.utils.copy(self, group or display.newGroup())
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+
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+ -- createImage can customize where images are found.
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+ function self:createImage (attachment)
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+ return display.newImage(attachment.name .. ".png")
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+ end
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+
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+ -- updateWorldTransform positions images.
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+ local updateWorldTransform_super = self.updateWorldTransform
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+ function self:updateWorldTransform ()
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+ updateWorldTransform_super(self)
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+
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+ if not self.images then self.images = {} end
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+ local images = self.images
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+
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+ for i,slot in ipairs(self.drawOrder) do
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+ local attachment = slot.attachment
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+ local image = images[attachment]
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+ if not attachment then
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+ -- Attachment is gone, remove the image.
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+ if image then
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+ image:removeSelf()
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+ images[attachment] = nil
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+ end
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+ else
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+ -- Create new image.
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+ if not image then
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+ image = self:createImage(attachment)
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+ if image then
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+ image:setReferencePoint(display.CenterReferencePoint)
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+ image.width = attachment.width
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+ image.height = attachment.height
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+ else
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+ print("Error creating image: " .. attachment.name)
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+ image = spine.Skeleton.failed
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+ end
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+ images[attachment] = image
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+ end
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+ -- Position image based on attachment and bone.
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+ if image ~= spine.Skeleton.failed then
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+ image.x = slot.bone.worldX + attachment.x * slot.bone.m00 + attachment.y * slot.bone.m01
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+ image.y = -(slot.bone.worldY + attachment.x * slot.bone.m10 + attachment.y * slot.bone.m11)
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+ image.rotation = -(slot.bone.worldRotation + attachment.rotation)
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+ image.xScale = slot.bone.worldScaleX + attachment.scaleX - 1
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+ image.yScale = slot.bone.worldScaleY + attachment.scaleY - 1
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+ if self.flipX then
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+ image.xScale = -image.xScale
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+ image.rotation = -image.rotation
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+ end
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+ if self.flipY then
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+ image.yScale = -image.yScale
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+ image.rotation = -image.rotation
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+ end
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+ image:setFillColor(slot.r, slot.g, slot.b, slot.a)
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+ self:insert(image)
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+ end
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+ end
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+ end
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+
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+ if self.debug then
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+ for i,bone in ipairs(self.bones) do
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+ if not bone.line then bone.line = display.newLine(0, 0, bone.data.length, 0) end
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+ bone.line.x = bone.worldX
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+ bone.line.y = -bone.worldY
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+ bone.line.rotation = -bone.worldRotation
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+ if self.flipX then
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+ bone.line.xScale = -1
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+ bone.line.rotation = -bone.line.rotation
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+ else
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+ bone.line.xScale = 1
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+ end
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+ if self.flipY then
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+ bone.line.yScale = -1
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+ bone.line.rotation = -bone.line.rotation
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+ else
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+ bone.line.yScale = 1
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+ end
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+ bone.line:setColor(255, 0, 0)
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+ self:insert(bone.line)
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+
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+ if not bone.circle then bone.circle = display.newCircle(0, 0, 3) end
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+ bone.circle.x = bone.worldX
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+ bone.circle.y = -bone.worldY
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+ bone.circle:setFillColor(0, 255, 0)
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+ self:insert(bone.circle)
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+ end
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+ end
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+ end
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+
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+ return self
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+end
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+
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+return spine
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NathanSweet