Fix hud type; remove useless code; style

.luacheckrc

@@ -4,7 +4,7 @@ globals = {
 }
 
 read_globals = {
-	"core", "minetest",
+	"minetest",
 	"vector", "ItemStack",
 
 	"player_monoids",

init.lua

@@ -19,7 +19,6 @@ local flak_warning = S("You have entered restricted airspace!@n"
 
 local hanggliding_players = {}
 local physics_overrides = {}
-
 local hud_overlay_ids = {}
 
 
@@ -58,7 +57,7 @@ local function set_hud_overlay(player, name, show)
 	end
 	if not hud_overlay_ids[name] and show == true then
 		hud_overlay_ids[name] = player:hud_add({
-			type = "image",
+			[minetest.features.hud_def_type_field and "type" or "hud_elem_type"] = "image",
 			text = "hangglider_overlay.png",
 			position = {x = 0, y = 0},
 			scale = {x = -100, y = -100},
@@ -84,7 +83,6 @@ local function set_physics_overrides(player, overrides)
 		pova.do_override(player)
 	else
 		local def = player:get_physics_override()
-		if not has_pova or not has_player_monoids then
 		if not physics_overrides[player_name] then
 			physics_overrides[player_name] = {
 				physics = {
@@ -95,7 +93,6 @@ local function set_physics_overrides(player, overrides)
 				deltas = {speed = 0, jump = 0, gravity = 0},
 			}
 		end
-		end
 		-- Compute the new delta to apply (relative to current physics)
 		local delta = {
 			speed = (overrides.speed or def.speed) - def.speed,
@@ -129,6 +126,7 @@ local function remove_physics_overrides(player)
 		if physics_overrides[player_name]
 			and physics_overrides[player_name].physics
 			and physics_overrides[player_name].deltas then
+
 			-- Subtract total delta from current values
 			player:set_physics_override({
 				speed = def.speed - physics_overrides[player_name].deltas.speed,