Keyframe

local function getSequenceLength(keyframeSequence)
	local length = 0
	for _, keyframe in pairs(keyframeSequence:GetKeyframes()) do
		if keyframe.Time > length then
			length = keyframe.Time
		end
	end
	return length
end

local keyframeSequence = Instance.new("KeyframeSequence")

getSequenceLength(keyframeSequence)

local keyframe = Instance.new("Keyframe")
keyframe.Parent = workspace

local marker = Instance.new("KeyframeMarker")
marker.Name = "FootStep"
marker.Value = 100

keyframe:AddMarker(marker) --marker.Parent = keyframe

task.wait(2)

keyframe:RemoveMarker(marker) --marker.Parent = nil

local function generateKeyframe(model)
	if not model.PrimaryPart then
		warn("No primary part set")
		return
	end

	local rootPart = model.PrimaryPart:GetRootPart()

	if not rootPart then
		warn("Root part not found")
		return
	end

	local partsAdded = {}
	partsAdded[rootPart] = true

	local function addPoses(part, parentPose)
		-- get all of the joints attached to the part
		for _, joint in pairs(part:GetJoints()) do
			-- we're only interested in Motor6Ds
			if joint:IsA("Motor6D") then
				-- find the connected part
				local connectedPart = nil
				if joint.Part0 == part then
					connectedPart = joint.Part1
				elseif joint.Part1 == part then
					connectedPart = joint.Part0
				end
				if connectedPart then
					-- make sure we haven't already added this part
					if not partsAdded[connectedPart] then
						partsAdded[connectedPart] = true
						-- create a pose
						local pose = Instance.new("Pose")
						pose.Name = connectedPart.Name
						parentPose:AddSubPose(pose)
						-- recurse
						addPoses(connectedPart, pose)
					end
				end
			end
		end
	end

	local keyframe = Instance.new("Keyframe")

	-- populate the keyframe
	local rootPose = Instance.new("Pose")
	rootPose.Name = rootPart.Name
	addPoses(rootPart, rootPose)
	keyframe:AddPose(rootPose)

	return keyframe
end

local character = script.Parent

local keyframe = generateKeyframe(character)

print(keyframe)

local keyframe = Instance.new("Keyframe")
keyframe.Parent = workspace

local pose = Instance.new("Pose")
pose.EasingStyle = Enum.PoseEasingStyle.Cubic
pose.EasingDirection = Enum.PoseEasingDirection.Out

local pose2 = Instance.new("Pose")
pose2.EasingStyle = Enum.PoseEasingStyle.Cubic
pose2.EasingDirection = Enum.PoseEasingDirection.Out

keyframe:AddPose(pose) -- pose.Parent = keyframe

task.wait(2)

keyframe:RemovePose(pose) -- pose.Parent = nil

task.wait(2)

keyframe:AddPose(pose) -- pose.Parent = keyframe

task.wait(2)

pose:AddSubPose(pose2) -- pose2.Parent = pose

task.wait(2)

pose:RemoveSubPose(pose2) -- pose2.Parent = nil

local keyframe = Instance.new("Keyframe")
keyframe.Parent = workspace

local marker1 = Instance.new("KeyframeMarker")
marker1.Name = "FootStep"
marker1.Value = 100

local marker2 = Instance.new("KeyframeMarker")
marker2.Name = "Wave"
marker2.Value = 100

keyframe:AddMarker(marker1) --marker.Parent = keyframe
keyframe:AddMarker(marker2) --marker.Parent = keyframe

local markers = keyframe:GetMarkers()
for _, marker in pairs(markers) do
	print(marker.Name)
end

local function resetPoses(parent)
	-- both functions are equivalent to GetChildren
	local poses = parent:IsA("Keyframe") and parent:GetPoses() or parent:IsA("Pose") and parent:GetSubPoses()

	for _, pose in pairs(poses) do
		if pose:IsA("Pose") then
			pose.CFrame = CFrame.new()
			-- recurse
			resetPoses(pose)
		end
	end
end

local keyframe = Instance.new("Keyframe")
keyframe.Parent = workspace

local marker = Instance.new("KeyframeMarker")
marker.Name = "FootStep"
marker.Value = 100

keyframe:AddMarker(marker) --marker.Parent = keyframe

task.wait(2)

keyframe:RemoveMarker(marker) --marker.Parent = nil

local keyframe = Instance.new("Keyframe")
keyframe.Parent = workspace

local pose = Instance.new("Pose")
pose.EasingStyle = Enum.PoseEasingStyle.Cubic
pose.EasingDirection = Enum.PoseEasingDirection.Out

local pose2 = Instance.new("Pose")
pose2.EasingStyle = Enum.PoseEasingStyle.Cubic
pose2.EasingDirection = Enum.PoseEasingDirection.Out

keyframe:AddPose(pose) -- pose.Parent = keyframe

task.wait(2)

keyframe:RemovePose(pose) -- pose.Parent = nil

task.wait(2)

keyframe:AddPose(pose) -- pose.Parent = keyframe

task.wait(2)

pose:AddSubPose(pose2) -- pose2.Parent = pose

task.wait(2)

pose:RemoveSubPose(pose2) -- pose2.Parent = nil