local Character = script.Parent
local Humanoid = Character:WaitForChild("Humanoid")
local pose = "Standing"

local userNoUpdateOnLoopSuccess, userNoUpdateOnLoopValue = pcall(function() return UserSettings():IsUserFeatureEnabled("UserNoUpdateOnLoop") end)
local userNoUpdateOnLoop = userNoUpdateOnLoopSuccess and userNoUpdateOnLoopValue

local currentAnim = ""
local currentAnimInstance = nil
local currentAnimTrack = nil
local currentAnimKeyframeHandler = nil
local currentAnimSpeed = 1.0

local runAnimTrack = nil
local runAnimKeyframeHandler = nil

local animTable = {}
local animNames = {
	idle = 	{
				{ id = "http://www.roblox.com/asset/?id=507766666", weight = 1 },
				{ id = "http://www.roblox.com/asset/?id=507766951", weight = 1 },
				{ id = "http://www.roblox.com/asset/?id=507766388", weight = 9 }
			},
	walk = 	{
				{ id = "http://www.roblox.com/asset/?id=3186354648", weight = 10 }
			},
	run = 	{
				{ id = "http://www.roblox.com/asset/?id=3186354648", weight = 10 }
			},
	swim = 	{
				{ id = "http://www.roblox.com/asset/?id=507784897", weight = 10 }
			},
	swimidle = 	{
				{ id = "http://www.roblox.com/asset/?id=507785072", weight = 10 }
			},
	jump = 	{
				{ id = "http://www.roblox.com/asset/?id=507765000", weight = 10 }
			},
	fall = 	{
				{ id = "http://www.roblox.com/asset/?id=507767968", weight = 10 }
			},
	climb = {
				{ id = "http://www.roblox.com/asset/?id=507765644", weight = 10 }
			},
	sit = 	{
				{ id = "http://www.roblox.com/asset/?id=507768133", weight = 10 }
			},
	toolnone = {
				{ id = "http://www.roblox.com/asset/?id=507768375", weight = 10 }
			},
	toolslash = {
				{ id = "http://www.roblox.com/asset/?id=522635514", weight = 10 }
			},
	toollunge = {
				{ id = "http://www.roblox.com/asset/?id=522638767", weight = 10 }
			},
	wave = {
				{ id = "http://www.roblox.com/asset/?id=507770239", weight = 10 }
			},
	point = {
				{ id = "http://www.roblox.com/asset/?id=507770453", weight = 10 }
			},
	dance = {
				{ id = "http://www.roblox.com/asset/?id=507771019", weight = 10 },
				{ id = "http://www.roblox.com/asset/?id=507771955", weight = 10 },
				{ id = "http://www.roblox.com/asset/?id=507772104", weight = 10 }
			},
	dance2 = {
				{ id = "http://www.roblox.com/asset/?id=507776043", weight = 10 },
				{ id = "http://www.roblox.com/asset/?id=507776720", weight = 10 },
				{ id = "http://www.roblox.com/asset/?id=507776879", weight = 10 }
			},
	dance3 = {
				{ id = "http://www.roblox.com/asset/?id=507777268", weight = 10 },
				{ id = "http://www.roblox.com/asset/?id=507777451", weight = 10 },
				{ id = "http://www.roblox.com/asset/?id=507777623", weight = 10 }
			},
	laugh = {
				{ id = "http://www.roblox.com/asset/?id=507770818", weight = 10 }
			},
	cheer = {
				{ id = "http://www.roblox.com/asset/?id=507770677", weight = 10 }
			},
}

-- Existance in this list signifies that it is an emote, the value indicates if it is a looping emote
local emoteNames = { wave = false, point = false, dance = true, dance2 = true, dance3 = true, laugh = false, cheer = false}

local PreloadAnimsUserFlag = false
local successPreloadAnim, msgPreloadAnim = pcall(function()
	PreloadAnimsUserFlag = UserSettings():IsUserFeatureEnabled("UserPreloadAnimations")
end)
if not successPreloadAnim then
	PreloadAnimsUserFlag = false
end

math.randomseed(tick())

function configureAnimationSet(name, fileList)
	if (animTable[name] ~= nil) then
		for _, connection in pairs(animTable[name].connections) do
			connection:disconnect()
		end
	end
	animTable[name] = {}
	animTable[name].count = 0
	animTable[name].totalWeight = 0
	animTable[name].connections = {}

	local allowCustomAnimations = true
	local AllowDisableCustomAnimsUserFlag = false

	local success, msg = pcall(function()
		AllowDisableCustomAnimsUserFlag = UserSettings():IsUserFeatureEnabled("UserAllowDisableCustomAnims2")
	end)

	if (AllowDisableCustomAnimsUserFlag) then
		local success, msg = pcall(function() allowCustomAnimations = game:GetService("StarterPlayer").AllowCustomAnimations end)
		if not success then
			allowCustomAnimations = true
		end
	end

	-- check for config values
	local config = script:FindFirstChild(name)
	if (allowCustomAnimations and config ~= nil) then
		table.insert(animTable[name].connections, config.ChildAdded:connect(function(child) configureAnimationSet(name, fileList) end))
		table.insert(animTable[name].connections, config.ChildRemoved:connect(function(child) configureAnimationSet(name, fileList) end))
		local idx = 1
		for _, childPart in pairs(config:GetChildren()) do
			if (childPart:IsA("Animation")) then
				table.insert(animTable[name].connections, childPart.Changed:connect(function(property) configureAnimationSet(name, fileList) end))
				animTable[name][idx] = {}
				animTable[name][idx].anim = childPart
				local weightObject = childPart:FindFirstChild("Weight")
				if (weightObject == nil) then
					animTable[name][idx].weight = 1
				else
					animTable[name][idx].weight = weightObject.Value
				end
				animTable[name].count = animTable[name].count + 1
				animTable[name].totalWeight = animTable[name].totalWeight + animTable[name][idx].weight
				idx = idx + 1
			end
		end
	end

	-- fallback to defaults
	if (animTable[name].count <= 0) then
		for idx, anim in pairs(fileList) do
			animTable[name][idx] = {}
			animTable[name][idx].anim = Instance.new("Animation")
			animTable[name][idx].anim.Name = name
			animTable[name][idx].anim.AnimationId = anim.id
			animTable[name][idx].weight = anim.weight
			animTable[name].count = animTable[name].count + 1
			animTable[name].totalWeight = animTable[name].totalWeight + anim.weight
--			print(name .. " [" .. idx .. "] " .. anim.id .. " (" .. anim.weight .. ")")
		end
	end

	-- preload anims
	if PreloadAnimsUserFlag then
		for i, animType in pairs(animTable) do
			for idx = 1, animType.count, 1 do
				Humanoid:LoadAnimation(animType[idx].anim)
			end
		end
	end
end

-- Setup animation objects
function scriptChildModified(child)
	local fileList = animNames[child.Name]
	if (fileList ~= nil) then
		configureAnimationSet(child.Name, fileList)
	end
end

script.ChildAdded:connect(scriptChildModified)
script.ChildRemoved:connect(scriptChildModified)


for name, fileList in pairs(animNames) do
	configureAnimationSet(name, fileList)
end

-- ANIMATION

-- declarations
local toolAnim = "None"
local toolAnimTime = 0

local jumpAnimTime = 0
local jumpAnimDuration = 0.31

local toolTransitionTime = 0.1
local fallTransitionTime = 0.2

-- functions

function stopAllAnimations()
	local oldAnim = currentAnim

	-- return to idle if finishing an emote
	if (emoteNames[oldAnim] ~= nil and emoteNames[oldAnim] == false) then
		oldAnim = "idle"
	end

	currentAnim = ""
	currentAnimInstance = nil
	if (currentAnimKeyframeHandler ~= nil) then
		currentAnimKeyframeHandler:disconnect()
	end

	if (currentAnimTrack ~= nil) then
		currentAnimTrack:Stop()
		currentAnimTrack:Destroy()
		currentAnimTrack = nil
	end

	-- clean up walk if there is one
	if (runAnimKeyframeHandler ~= nil) then
		runAnimKeyframeHandler:disconnect()
	end

	if (runAnimTrack ~= nil) then
		runAnimTrack:Stop()
		runAnimTrack:Destroy()
		runAnimTrack = nil
	end

	return oldAnim
end

function getHeightScale()
	if Humanoid then
		local bodyHeightScale = Humanoid:FindFirstChild("BodyHeightScale")
		if bodyHeightScale and bodyHeightScale:IsA("NumberValue") then
			return bodyHeightScale.Value
		end
	end

	return 1
end

local smallButNotZero = 0.0001
function setRunSpeed(speed)
	if speed < 0.33 then
		currentAnimTrack:AdjustWeight(1.0)
		runAnimTrack:AdjustWeight(smallButNotZero)
	elseif speed < 0.66 then
		local weight = ((speed - 0.33) / 0.33)
		currentAnimTrack:AdjustWeight(1.0 - weight + smallButNotZero)
		runAnimTrack:AdjustWeight(weight + smallButNotZero)
	else
		currentAnimTrack:AdjustWeight(smallButNotZero)
		runAnimTrack:AdjustWeight(1.0)
	end

	local speedScaled = speed * 1.25

	local heightScale = getHeightScale()

	runAnimTrack:AdjustSpeed(speedScaled / heightScale)
	currentAnimTrack:AdjustSpeed(speedScaled / heightScale)
end


function setAnimationSpeed(speed)
	if speed ~= currentAnimSpeed then
		currentAnimSpeed = speed
		if currentAnim == "walk" then
			setRunSpeed(speed)
		else
			currentAnimTrack:AdjustSpeed(currentAnimSpeed)
		end
	end
end

function keyFrameReachedFunc(frameName)
	if (frameName == "End") then
		if currentAnim == "walk" then
			if userNoUpdateOnLoop == true then
				if runAnimTrack.Looped ~= true then
					runAnimTrack.TimePosition = 0.0
				end
				if currentAnimTrack.Looped ~= true then
					currentAnimTrack.TimePosition = 0.0
				end
			else
				runAnimTrack.TimePosition = 0.0
				currentAnimTrack.TimePosition = 0.0
			end
		else
			local repeatAnim = currentAnim
			-- return to idle if finishing an emote
			if (emoteNames[repeatAnim] ~= nil and emoteNames[repeatAnim] == false) then
				repeatAnim = "idle"
			end

			local animSpeed = currentAnimSpeed
			playAnimation(repeatAnim, 0.15, Humanoid)
			setAnimationSpeed(animSpeed)
		end
	end
end

function rollAnimation(animName)
	local roll = math.random(1, animTable[animName].totalWeight)
	local origRoll = roll
	local idx = 1
	while (roll > animTable[animName][idx].weight) do
		roll = roll - animTable[animName][idx].weight
		idx = idx + 1
	end
	return idx
end

function playAnimation(animName, transitionTime, humanoid)
	local idx = rollAnimation(animName)
	local anim = animTable[animName][idx].anim

	-- switch animation
	if (anim ~= currentAnimInstance) then

		if (currentAnimTrack ~= nil) then
			currentAnimTrack:Stop(transitionTime)
			currentAnimTrack:Destroy()
		end

		if (runAnimTrack ~= nil) then
			runAnimTrack:Stop(transitionTime)
			runAnimTrack:Destroy()
			if userNoUpdateOnLoop == true then
				runAnimTrack = nil
			end
		end

		currentAnimSpeed = 1.0

		-- load it to the humanoid; get AnimationTrack
		currentAnimTrack = humanoid:LoadAnimation(anim)
		currentAnimTrack.Priority = Enum.AnimationPriority.Core

		-- play the animation
		currentAnimTrack:Play(transitionTime)
		currentAnim = animName
		currentAnimInstance = anim

		-- set up keyframe name triggers
		if (currentAnimKeyframeHandler ~= nil) then
			currentAnimKeyframeHandler:disconnect()
		end
		currentAnimKeyframeHandler = currentAnimTrack.KeyframeReached:connect(keyFrameReachedFunc)

		-- check to see if we need to blend a walk/run animation
		if animName == "walk" then
			local runAnimName = "run"
			local runIdx = rollAnimation(runAnimName)

			runAnimTrack = humanoid:LoadAnimation(animTable[runAnimName][runIdx].anim)
			runAnimTrack.Priority = Enum.AnimationPriority.Core
			runAnimTrack:Play(transitionTime)

			if (runAnimKeyframeHandler ~= nil) then
				runAnimKeyframeHandler:disconnect()
			end
			runAnimKeyframeHandler = runAnimTrack.KeyframeReached:connect(keyFrameReachedFunc)
		end
	end

end

-------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------

local toolAnimName = ""
local toolAnimTrack = nil
local toolAnimInstance = nil
local currentToolAnimKeyframeHandler = nil

function toolKeyFrameReachedFunc(frameName)
	if (frameName == "End") then
		playToolAnimation(toolAnimName, 0.0, Humanoid)
	end
end


function playToolAnimation(animName, transitionTime, humanoid, priority)
		local idx = rollAnimation(animName)
		local anim = animTable[animName][idx].anim

		if (toolAnimInstance ~= anim) then

			if (toolAnimTrack ~= nil) then
				toolAnimTrack:Stop()
				toolAnimTrack:Destroy()
				transitionTime = 0
			end

			-- load it to the humanoid; get AnimationTrack
			toolAnimTrack = humanoid:LoadAnimation(anim)
			if priority then
				toolAnimTrack.Priority = priority
			end

			-- play the animation
			toolAnimTrack:Play(transitionTime)
			toolAnimName = animName
			toolAnimInstance = anim

			currentToolAnimKeyframeHandler = toolAnimTrack.KeyframeReached:connect(toolKeyFrameReachedFunc)
		end
end

function stopToolAnimations()
	local oldAnim = toolAnimName

	if (currentToolAnimKeyframeHandler ~= nil) then
		currentToolAnimKeyframeHandler:disconnect()
	end

	toolAnimName = ""
	toolAnimInstance = nil
	if (toolAnimTrack ~= nil) then
		toolAnimTrack:Stop()
		toolAnimTrack:Destroy()
		toolAnimTrack = nil
	end

	return oldAnim
end

-------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------
-- STATE CHANGE HANDLERS

function onRunning(speed)
	if speed > 0.5 then
		local scale = 16.0
		playAnimation("walk", 0.2, Humanoid)
		setAnimationSpeed(speed / scale)
		pose = "Running"
	else
		if emoteNames[currentAnim] == nil then
			playAnimation("idle", 0.2, Humanoid)
			pose = "Standing"
		end
	end
end

function onDied()
	pose = "Dead"
end

function onJumping()
	playAnimation("jump", 0.1, Humanoid)
	jumpAnimTime = jumpAnimDuration
	pose = "Jumping"
end

function onClimbing(speed)
	local scale = 5.0
	playAnimation("climb", 0.1, Humanoid)
	setAnimationSpeed(speed / scale)
	pose = "Climbing"
end

function onGettingUp()
	pose = "GettingUp"
end

function onFreeFall()
	if (jumpAnimTime <= 0) then
		playAnimation("fall", fallTransitionTime, Humanoid)
	end
	pose = "FreeFall"
end

function onFallingDown()
	pose = "FallingDown"
end

function onSeated()
	pose = "Seated"
end

function onPlatformStanding()
	pose = "PlatformStanding"
end

-------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------

function onSwimming(speed)
	if speed > 1.00 then
		local scale = 10.0
		playAnimation("swim", 0.4, Humanoid)
		setAnimationSpeed(speed / scale)
		pose = "Swimming"
	else
		playAnimation("swimidle", 0.4, Humanoid)
		pose = "Standing"
	end
end

function animateTool()
	if (toolAnim == "None") then
		playToolAnimation("toolnone", toolTransitionTime, Humanoid, Enum.AnimationPriority.Idle)
		return
	end

	if (toolAnim == "Slash") then
		playToolAnimation("toolslash", 0, Humanoid, Enum.AnimationPriority.Action)
		return
	end

	if (toolAnim == "Lunge") then
		playToolAnimation("toollunge", 0, Humanoid, Enum.AnimationPriority.Action)
		return
	end
end

function getToolAnim(tool)
	for _, c in ipairs(tool:GetChildren()) do
		if c.Name == "toolanim" and c.className == "StringValue" then
			return c
		end
	end
	return nil
end

local lastTick = 0

function stepAnimate(currentTime)
	local amplitude = 1
	local frequency = 1
  	local deltaTime = currentTime - lastTick
  	lastTick = currentTime

	local climbFudge = 0
	local setAngles = false

  	if (jumpAnimTime > 0) then
  		jumpAnimTime = jumpAnimTime - deltaTime
  	end

	if (pose == "FreeFall" and jumpAnimTime <= 0) then
		playAnimation("fall", fallTransitionTime, Humanoid)
	elseif (pose == "Seated") then
		playAnimation("sit", 0.5, Humanoid)
		return
	elseif (pose == "Running") then
		playAnimation("walk", 0.2, Humanoid)
	elseif (pose == "Dead" or pose == "GettingUp" or pose == "FallingDown" or pose == "Seated" or pose == "PlatformStanding") then
		stopAllAnimations()
		amplitude = 0.1
		frequency = 1
		setAngles = true
	end

	-- Tool Animation handling
	local tool = Character:FindFirstChildOfClass("Tool")
	if tool and tool:FindFirstChild("Handle") then
		local animStringValueObject = getToolAnim(tool)

		if animStringValueObject then
			toolAnim = animStringValueObject.Value
			-- message recieved, delete StringValue
			animStringValueObject.Parent = nil
			toolAnimTime = currentTime + .3
		end

		if currentTime > toolAnimTime then
			toolAnimTime = 0
			toolAnim = "None"
		end

		animateTool()
	else
		stopToolAnimations()
		toolAnim = "None"
		toolAnimInstance = nil
		toolAnimTime = 0
	end
end

-- connect events
Humanoid.Died:connect(onDied)
Humanoid.Running:connect(onRunning)
Humanoid.Jumping:connect(onJumping)
Humanoid.Climbing:connect(onClimbing)
Humanoid.GettingUp:connect(onGettingUp)
Humanoid.FreeFalling:connect(onFreeFall)
Humanoid.FallingDown:connect(onFallingDown)
Humanoid.Seated:connect(onSeated)
Humanoid.PlatformStanding:connect(onPlatformStanding)
Humanoid.Swimming:connect(onSwimming)

-- setup emote chat hook
game:GetService("Players").LocalPlayer.Chatted:connect(function(msg)
	local emote = ""
	if (string.sub(msg, 1, 3) == "/e ") then
		emote = string.sub(msg, 4)
	elseif (string.sub(msg, 1, 7) == "/emote ") then
		emote = string.sub(msg, 8)
	end

	if (pose == "Standing" and emoteNames[emote] ~= nil) then
		playAnimation(emote, 0.1, Humanoid)
	end
end)



-- initialize to idle
playAnimation("idle", 0.1, Humanoid)
pose = "Standing"

-- loop to handle timed state transitions and tool animations
while Character.Parent ~= nil do
	local _, currentGameTime = wait(0.1)
	stepAnimate(currentGameTime)
end