spine-runtimes/spine-love/main.lua

-------------------------------------------------------------------------------
-- Spine Runtimes Software License v2.5
--
-- Copyright (c) 2013-2016, Esoteric Software
-- All rights reserved.
--
-- You are granted a perpetual, non-exclusive, non-sublicensable, and
-- non-transferable license to use, install, execute, and perform the Spine
-- Runtimes software and derivative works solely for personal or internal
-- use. Without the written permission of Esoteric Software (see Section 2 of
-- the Spine Software License Agreement), you may not (a) modify, translate,
-- adapt, or develop new applications using the Spine Runtimes or otherwise
-- create derivative works or improvements of the Spine Runtimes or (b) remove,
-- delete, alter, or obscure any trademarks or any copyright, trademark, patent,
-- or other intellectual property or proprietary rights notices on or in the
-- Software, including any copy thereof. Redistributions in binary or source
-- form must include this license and terms.
--
-- THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE "AS IS" AND ANY EXPRESS OR
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-- MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
-- EVENT SHALL ESOTERIC SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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-------------------------------------------------------------------------------

local spine = require "spine-love.spine"

local skeletons = {}
local activeSkeleton = 1

function loadSkeleton (jsonFile, atlasFile, animation, skin, scale, x, y)
	local loader = function (path) return love.graphics.newImage("data/" .. path) end
	local atlas = spine.TextureAtlas.new(spine.utils.readFile("data/" .. atlasFile .. ".atlas"), loader)

	local json = spine.SkeletonJson.new(spine.AtlasAttachmentLoader.new(atlas))
	json.scale = scale
	local skeletonData = json:readSkeletonDataFile("data/" .. jsonFile .. ".json")
	local skeleton = spine.Skeleton.new(skeletonData)
	skeleton.x = x
	skeleton.y = y
	skeleton.flipX = false
	skeleton.flipY = true
	if skin then
		skeleton:setSkin(skin)
	end
	skeleton:setToSetupPose()
	
	local stateData = spine.AnimationStateData.new(skeletonData)
	local state = spine.AnimationState.new(stateData)
	state:setAnimationByName(0, animation, true)
	
	-- set some event callbacks
	state.onStart = function (entry)
		print(entry.trackIndex.." start: "..entry.animation.name)
	end
	state.onInterrupt = function (entry)
		print(entry.trackIndex.." interrupt: "..entry.animation.name)
	end
	state.onEnd = function (entry)
		print(entry.trackIndex.." end: "..entry.animation.name)
	end
	state.onComplete = function (entry)
		print(entry.trackIndex.." complete: "..entry.animation.name)
	end
	state.onDispose = function (entry)
		print(entry.trackIndex.." dispose: "..entry.animation.name)
	end
	state.onEvent = function (entry, event)
		print(entry.trackIndex.." event: "..entry.animation.name..", "..event.data.name..", "..event.intValue..", "..event.floatValue..", '"..(event.stringValue or "").."'")
	end
	
	state:update(0.5)
	state:apply(skeleton)
	
	return { state = state, skeleton = skeleton }
end

function love.load(arg)
	if arg[#arg] == "-debug" then require("mobdebug").start() end
	table.insert(skeletons, loadSkeleton("test", "test", "animation", nil, 0.5, 400, 300))
	table.insert(skeletons, loadSkeleton("TwoColorTest", "TwoColorTest", "animation", nil, 0.3, 400, 300))
	table.insert(skeletons, loadSkeleton("spineboy", "spineboy", "walk", nil, 0.5, 400, 500))
	table.insert(skeletons, loadSkeleton("raptor", "raptor", "walk", nil, 0.3, 400, 500))
	table.insert(skeletons, loadSkeleton("goblins-mesh", "goblins", "walk", "goblin", 1, 400, 500))
	table.insert(skeletons, loadSkeleton("tank", "tank", "drive", nil, 0.2, 600, 500))
	table.insert(skeletons, loadSkeleton("vine", "vine", "animation", nil, 0.3, 400, 500))
	table.insert(skeletons, loadSkeleton("stretchyman", "stretchyman", "sneak", nil, 0.3, 200, 500))
	skeletonRenderer = spine.SkeletonRenderer.new(true)
end

function love.update (delta)
	-- Update the state with the delta time, apply it, and update the world transforms.
	local state = skeletons[activeSkeleton].state
	local skeleton = skeletons[activeSkeleton].skeleton
	state:update(delta)
	state:apply(skeleton)
	skeleton:updateWorldTransform()
end

function love.draw ()
	love.graphics.setBackgroundColor(128, 128, 128, 255)
	love.graphics.setColor(255, 255, 255)
	local skeleton = skeletons[activeSkeleton].skeleton
	skeletonRenderer:draw(skeleton)
end

function love.mousepressed (x, y, button, istouch)
	activeSkeleton = activeSkeleton + 1
	if activeSkeleton > #skeletons then activeSkeleton = 1 end
end