pixel art sheet

part1 = Instance.new("Part", owner.Character.Head)
part1.Size = Vector3.new(7.5,7.5,0.05)
part1.Anchored = true
part1.CFrame = owner.Character.HumanoidRootPart.CFrame * CFrame.new(0,2.5,-5)
local decal = Instance.new("Texture", part1)
decal.Texture = "http://www.roblox.com/asset/?id=8406359828"
decal.Face = Enum.NormalId.Front
decal.Transparency = 0
local Frames = 4
local currentFrame = 4
local rows = 2
local columns = 2

local currentRow,CurrentColumn = 0,0

local linear = false

local fps = 4
local full60fps = false

local size = part1.Size

decal.StudsPerTileU = columns*size.X
decal.StudsPerTileV = rows*size.Y

while true do
	if not full60fps then wait(1/fps) else game:GetService("RunService").Stepped:Wait() end
	if linear then
		decal.OffsetStudsU = decal.OffsetStudsU + size.X
		if decal.OffsetStudsU > decal.StudsPerTileU then
			decal.OffsetStudsU = 0
		end
	else
		CurrentColumn = CurrentColumn + 1
		if CurrentColumn > columns then
			CurrentColumn = 1
			currentRow = currentRow + 1
		end
		if currentFrame > Frames then
			currentRow,CurrentColumn,currentFrame = 1,1,1
		end
		decal.OffsetStudsU = size.X*(CurrentColumn-1)
		decal.OffsetStudsV = size.Y*(currentRow-1)
		currentFrame = currentFrame+1
	end
end