-- Init function called from K3dEngine during initialization
-- Warning -- Don't delete this function -- Function must exist
function Init()
	print("Loading map ./maps/test/add_ray_map.lua")
	K3d_LoadMap("./maps/test/add_ray_map.lua")
	InitScene()
end
-- Update function called from K3dEngine during update scene
-- Warning -- Don't delete this function -- Function must exist
function Update()
	UpdateScene()
	if K3d_CheckKeyboardKey("Esc") then
		-- Load new script and delete this script
		-- This function must be called as last function in this script
		-- else engine shut down in next funcion
		-- because next function doesn`t exist in new script
		K3d_LoadNewScript("./scripts/main_menu_script.lua")
	end
end
-- Delete function called from K3dEngine during delete scene
-- Warning -- Don't delete this function -- Function must exist
function Delete()
	print("Delete() function called")
end

-- Global variables
g_iRayId = -1
g_iLineId = -1

-- Init scene in scene initialization
function InitScene()
	-- Your some scene initialization
	print("InitScene() function called")
	g_iRayId = K3d_GetObject("Ray", ObjType.iRayObj)
	print("g_iRayId =", g_iRayId)
	if g_iRayId == -1 then
		print("Ray doesn`t exists.")
		return false
	end
	g_iLineId = K3d_GetObject("RayLine", ObjType.iLineObj)
	print("g_iLineId =", g_iLineId)
	if g_iLineId == -1 then
		print("Line doesn`t exists.")
		return false
	end
	K3d_Hide(g_iLineId, ObjType.iLineObj, false);
end
-- Update scene in avery frame
function UpdateScene()
	-- Your some scene updates
	
	K3d_Print("K3dEngine 0.1")
	K3d_Print("Testing K3d_GetObject, K3d_SetLine, K3d_GetRayOrigDir, K3d_Hide scripts")
	local x_orig,y_orig,z_orig,x_dir,y_dir, z_dir
	-- Get ray origin and direction and set to the line for visualize ray
	x_orig,y_orig,z_orig,x_dir,y_dir,z_dir = K3d_GetRayOrigDir(g_iRayId)
	K3d_SetLine(g_iLineId, x_orig,y_orig,z_orig,x_dir,y_dir,z_dir)
end