nil checks and 53 support check

api.lua

@@ -27,16 +27,18 @@ function beds.register_bed(name, def)
 		paramtype = "light",
 		paramtype2 = "facedir",
 		stack_max = 1,
-		groups = {choppy = 2, oddly_breakable_by_hand = 2, flammable = 3, bed = 1,
-				fall_damage_add_percent = -40, bouncy = 85},
+		groups = {
+			choppy = 2, oddly_breakable_by_hand = 2, flammable = 3, bed = 1,
+			fall_damage_add_percent = -40, bouncy = 85
+		},
 		sounds = default.node_sound_wood_defaults(),
 		selection_box = {
 			type = "fixed",
-			fixed = def.selectionbox,
+			fixed = def.selectionbox
 		},
 		collision_box = {
 			type = "fixed",
-			fixed = def.collisionbox,
+			fixed = def.collisionbox
 		},
 
 		on_place = function(itemstack, placer, pointed_thing)

functions.lua

@@ -1,5 +1,6 @@
 local S = beds.get_translator
 local is_50 = minetest.get_modpath("player_api")
+local is_53 = minetest.has_feature("object_step_has_moveresult")
 local is_pova = minetest.get_modpath("pova")
 local pi = math.pi
 local is_sp = minetest.is_singleplayer()
@@ -132,7 +133,7 @@ local function lay_down(player, pos, bed_pos, state, skip)
 		end
 
 		-- Check if player is moving
-		if vector.length(player:get_velocity()) > 0.001 then
+		if is_53 and vector.length(player:get_velocity()) > 0.001 then
 
 			minetest.chat_send_player(name,
 					S("You have to stop moving before going to bed!"))
@@ -320,6 +321,8 @@ if enable_respawn then
 	-- respawn player at bed if enabled and valid position is found
 	minetest.register_on_respawnplayer(function(player)
 
+		if not player then return end
+
 		local name = player:get_player_name()
 		local pos = beds.spawn[name]
 
@@ -333,6 +336,8 @@ end
 
 minetest.register_on_leaveplayer(function(player)
 
+	if not player then return end
+
 	local name = player:get_player_name()
 
 	lay_down(player, nil, nil, false, true)