Add z_index to HUD definition (fixes issue 1).

README.md

@@ -0,0 +1,38 @@
+Vignette Redo
+-------------
+
+A Minetest mod to optionally place a vignette filter over the screen.
+
+![Vignette Screenshot](screenshot.png "Vignette")
+
+By David G (kestral246), based on the concept by TriBlade9.
+
+How to enable
+-------------
+
+This mod defaults to not applying filter. To enable, use the chat command:
+
+> "/vignette"
+
+Repeated use of this command will toggle the effect off and on.
+
+Local mod storage is used to maintain state of vignette filter between sessions, per user.
+
+
+Licenses
+--------
+Source code
+
+> The MIT License (MIT)
+
+Media (textures)
+
+>Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
+ 
+
+
+
+
+
+
+

init.lua

@@ -1,23 +1,45 @@
--- vignette
--- Adds a vignette filter to player's screen
+-- vignette_redo
+-- Optionally place a vignette filter over the screen.
 -- Based on concept by TriBlade9
 -- By David_G (kestral246@gmail.com)
--- Includes chat command "/vignette", which toggles effect off or on
+
+-- Vignette effect defaults to off at start.
+-- Use chat command "/vignette" to enable, and then to toggle effect off or on.
+-- Local storage maintains state of vignette filter per user.
+
+-- 2020-11-20
+-- Add z_index to HUD definition (issue 1)
 
 local vignette = {}
+local storage = minetest.get_mod_storage()
 
 minetest.register_on_joinplayer(function(player)
 	local pname = player:get_player_name()
-	vignette[pname] = {
-		id = player:hud_add({
-			hud_elem_type = "image",
-			text = "vignette.png",
-			position = {x=0, y=0},
-			scale = {x=-100, y=-100},
-			alignment = {x=1, y=1},
-			offset = {x=0, y=0}
-		}),
-		enable = true }
+	if storage:get(pname) and storage:get(pname) == "1" then  -- enabled
+		vignette[pname] = {
+			id = player:hud_add({
+				hud_elem_type = "image",
+				text = "vignette.png",
+				position = {x=0, y=0},
+				scale = {x=-100, y=-100},
+				alignment = {x=1, y=1},
+				offset = {x=0, y=0},
+				z_index = -400
+			}),
+			enable = true }
+	else  -- not enabled
+		vignette[pname] = {
+			id = player:hud_add({
+				hud_elem_type = "image",
+				text = "",
+				position = {x=0, y=0},
+				scale = {x=-100, y=-100},
+				alignment = {x=1, y=1},
+				offset = {x=0, y=0},
+				z_index = -400
+			}),
+			enable = false }
+	end
 end)
 
 minetest.register_chatcommand("vignette", {
@@ -27,11 +49,13 @@ minetest.register_chatcommand("vignette", {
 	func = function(name, param)
 		local player = minetest.get_player_by_name(name)
 		if vignette[name].enable == true then
-			player:hud_change(vignette[name].id, "text", "blank.png")
+			player:hud_change(vignette[name].id, "text", "")
 			vignette[name].enable = false
+			storage:set_string(name, "0")
 		else
 			player:hud_change(vignette[name].id, "text", "vignette.png")
 			vignette[name].enable = true
+			storage:set_string(name, "1")
 		end
 	end,
 })

mod.conf

@@ -0,0 +1,2 @@
+name = vignette_redo
+description = Optionally place a vignette filter over the screen.