-- Checkpoint Marker script
--  o Create a checkpoint marker object, initially in a deactiavted ( red colour ) state
--	o On receiving an ACTIVATE message, becomes actives and changes colour to green
--	o On receiving a DEACTIVATE message, becomes deactivated and changes colour to red
--	o Sends a COLLECT message when the player gets near and the markers is in the active state


function InitCheckpointMarker()
	print("Initing Crusty CheckpointMarker pickup")
	CheckpointArrowModel = Object.LoadModel("Pickups\\Checkpoint_Arrow.rom")
end

function CreateCheckpointMarker(myID)
	return coroutine.create(UpdateCheckpointMarker)
end

function UpdateCheckpointMarker(myID)

	local dt=0
	local reason=0

	local x,y,z=Object.GetPosition(myID);
	y = y + 2.75
	Object.SetModel(myID,CheckpointArrowModel)
	
	local Orbit1ID=Object.CreateChildScriptedObject(myID,"CheckpointMarkerOrbit1",x,y,z)
	local Orbit2ID=Object.CreateChildScriptedObject(myID,"CheckpointMarkerOrbit2",x,y,z)

	Object.CreateSphereTouchfield(myID,0,0.5,0,3.00)
	Object.UpdateOnReceiveMessage(myID,true)
	Object.SetUpdateRate(myID,0)
	
	Object.SendEventToObject(Orbit1ID,5)
	Object.SendEventToObject(Orbit2ID,5)
	Object.UpdateOnSphereTouchfield(myID,false)

	while true do
		dt,reason = coroutine.yield()
		
		if reason == 1 then
			-- spheretouch
			Object.SetCollected(myID,0)
			
		elseif reason == 4 then
			-- activate
			Object.SendEventToObject(Orbit1ID,4)
			Object.SendEventToObject(Orbit2ID,4)
			Object.UpdateOnSphereTouchfield(myID,true)

		elseif reason == 5 then
			-- deactivate
			Object.SendEventToObject(Orbit1ID,5)
			Object.SendEventToObject(Orbit2ID,5)
			Object.UpdateOnSphereTouchfield(myID,false)
		end
	end
end