os.loadAPI("ocs/apis/sensor")
local s = sensor.wrap("back")
redstone.setBundledOutput("bottom", 0)
while true do

for key,value in pairs(s.getTargets()) do
  if value.Riding ~= nil then
   if value.Riding.Name == "Skeleton" then
     redstone.setBundledOutput("bottom", colors.gray)
     while redstone.testBundledInput("left", colors.yellow) == false do
       os.sleep(0.2)
     end
     print(value.Riding.Name)
     redstone.setBundledOutput("bottom", 0)
   elseif value.Riding.Name == "Zombie" then
     redstone.setBundledOutput("bottom", colors.green)
    while redstone.testBundledInput("left", colors.yellow) == false do
       os.sleep(0.2)
     end
     print(value.Riding.Name)
     redstone.setBundledOutput("bottom", 0)
   elseif value.Riding.Name == "Spider" then
     redstone.setBundledOutput("bottom", colors.black)
     while redstone.testBundledInput("left", colors.yellow) == false do
       os.sleep(0.2)
    end
     print(value.Riding.Name)
     redstone.setBundledOutput("bottom", 0)
   elseif value.Riding.Name == "Creeper" then
     redstone.setBundledOutput("bottom", colors.white)
     while redstone.testBundledInput("left", colors.yellow) == false do
       os.sleep(0.2)
     end
     print(value.Riding.Name)
     redstone.setBundledOutput("bottom", 0)
   else
     redstone.setBundledOutput("bottom", 0)
     print(value.Riding.Name)
   end
end
end
 os.sleep(0.5)
end