--


function Raycast.FindPartOnRayWithCallbackWithIgnoreList(ray, list, terrainCellsAreCubes, ignoreWater, loopout, callbackFunc)
	local maxDistance = ray.Direction.Magnitude
	local direction = ray.Direction.Unit
	
	loopout = loopout or 25
	local loopCount = 0
	
	local lastPosition = ray.Origin
	local distance = 0
	
	local hit, position, normal, material
	
	repeat
		local r = Ray.new(lastPosition, direction * (maxDistance - distance))
		hit, position, normal, material = WORKSPACE:FindPartOnRayWithIgnoreList(ray, list, terrainCellsAreCubes, ignoreWater, true)
		local result = callbackFunc(hit, position, normal, material)
		
		if (result == CALLBACKRESULT.Continue) then
			distance = (ray.Origin - position).Magnitude
			lastPosition = position
		elseif (result == CALLBACKRESULT.Finished) then
			return hit, position, normal, material
		elseif (result == CALLBACKRESULT.Fail or result == nil) then
			break
		end
		
		loopCount = loopCount + 1
	until (loopCount > loopout or distance >= maxDistance - 0.1)
	
	return
end

function Raycast.FindPartOnRayWithCallbackWithWhiteList(ray, list, terrainCellsAreCubes, ignoreWater, callbackFunc)
	local maxDistance = ray.Direction.Magnitude
	local direction = ray.Direction.Unit
	
	local lastPosition = ray.Origin
	local distance = 0
	
	local hit, position, normal, material
	
	repeat
		local r = Ray.new(lastPosition, direction * (maxDistance - distance))
		hit, position, normal, material = WORKSPACE:FindPartOnRayWithWhiteList(ray, list, terrainCellsAreCubes, ignoreWater, true)
		local result = callbackFunc(hit, position, normal, material)
		
		if (result == CALLBACKRESULT.Continue) then
			distance = (ray.Origin - position).Magnitude
			lastPosition = position
		elseif (result == CALLBACKRESULT.Finished) then
			return hit, position, normal, material
		elseif (result == CALLBACKRESULT.Fail or result == nil) then
			break
		end
	until (distance >= maxDistance - 0.1)
	
	return
end

function Raycast.FindPartOnRayWithCallback(ray, ignore, terrainCellsAreCubes, ignoreWater, callbackFunc)
	return Raycast.FindPartOnRayWithCallbackWithIgnoreList(ray, {ignore}, terrainCellsAreCubes, ignoreWater, callbackFunc)
end
