From 911bed391150450ed92cd99f99af3ad99ef75edb Mon Sep 17 00:00:00 2001
From: Jean-Patrick Guerrero <jeanpatrick.guerrero@gmail.com>
Date: Sun, 28 Aug 2022 14:18:05 +0200
Subject: [PATCH] Add option in Style settings to show wielditem descriptions
 in HUD

---
 .luacheckrc       |  1 +
 init.lua          |  2 ++
 src/callbacks.lua |  4 ++++
 src/gui.lua       |  8 +++++++
 src/hud.lua       | 57 ++++++++++++++++++++++++++++++++++++++++++++++-
 5 files changed, 71 insertions(+), 1 deletion(-)

diff --git a/.luacheckrc b/.luacheckrc
index 9b1049c..79da584 100644
--- a/.luacheckrc
+++ b/.luacheckrc
@@ -10,6 +10,7 @@ read_globals = {
 	"armor",
 	"skins",
 	"awards",
+	"hb",
 	"vector",
 	"string",
 	"table",
diff --git a/init.lua b/init.lua
index 337d5f8..9097048 100644
--- a/init.lua
+++ b/init.lua
@@ -30,6 +30,7 @@ i3 = {
 		min_fs_version = 6,
 		item_btn_size = 1.1,
 		drop_bag_on_die = true,
+		wielditem_fade_after = 3,
 		save_interval = 600, -- Player data save interval (in seconds)
 
 		hud_speed = 1,
@@ -56,6 +57,7 @@ i3 = {
 		waypoints = true,
 		inv_items = true,
 		known_recipes = true,
+		wielditem_hud = true,
 		legacy_inventory = true,
 	},
 
diff --git a/src/callbacks.lua b/src/callbacks.lua
index 166d6f6..528d521 100644
--- a/src/callbacks.lua
+++ b/src/callbacks.lua
@@ -148,6 +148,10 @@ if core.global_exists"skins" then
 	i3.modules.skins = true
 end
 
+if core.global_exists"hb" then
+	i3.modules.hudbars = true
+end
+
 if core.global_exists"awards" then
 	i3.modules.awards = true
 
diff --git a/src/gui.lua b/src/gui.lua
index f493f14..9953499 100644
--- a/src/gui.lua
+++ b/src/gui.lua
@@ -629,6 +629,7 @@ local function show_settings(fs, data)
 		elseif show_style then
 			checkbox(2.6, 9.95, "cb_hide_tabs", "Hide tabs", tostring(data.hide_tabs))
 			checkbox(2.6, 10.4, "cb_legacy_inventory", "Legacy inventory", tostring(data.legacy_inventory))
+			checkbox(2.6, 10.85, "cb_wielditem_hud", "HUD description", tostring(data.wielditem_hud))
 
 			local sign = (data.font_size > 0 and "+") or (data.font_size > 0 and "-") or ""
 			label(5.3, 9.95, ES"Font size" .. fmt(": %s", sign .. data.font_size))
@@ -637,6 +638,13 @@ local function show_settings(fs, data)
 			fs(fmt("scrollbaroptions[min=-%u;max=%u;smallstep=1;largestep=1;thumbsize=2]", range, range))
 			fs(fmt("scrollbar[5.3,10.25;2.45,0.3;horizontal;sb_font_size;%d]", data.font_size))
 
+			fs(fmt("tooltip[cb_hide_tabs;%s;#707070;#fff]",
+				ES"Enable this option to change the style of the right panel"),
+			   fmt("tooltip[cb_legacy_inventory;%s;#707070;#fff]",
+				ES"Enable this option to set the classic inventory size in Minetest"),
+			   fmt("tooltip[cb_wielditem_hud;%s;#707070;#fff]",
+				ES"Enable this option to show the wielded item description in your HUD"))
+
 		elseif show_sorting then
 			checkbox(2.6, 9.95, "cb_inv_compress", "Compression", tostring(data.inv_compress))
 			checkbox(2.6, 10.4,  "cb_reverse_sorting", "Reverse mode", tostring(data.reverse_sorting))
diff --git a/src/hud.lua b/src/hud.lua
index 135b237..93ee92a 100644
--- a/src/hud.lua
+++ b/src/hud.lua
@@ -1,4 +1,4 @@
-IMPORT("get_connected_players", "str_to_pos", "add_hud_waypoint")
+IMPORT("ceil", "get_connected_players", "str_to_pos", "add_hud_waypoint")
 
 local function init_hud(player)
 	local name = player:get_player_name()
@@ -32,6 +32,17 @@ local function init_hud(player)
 			z_index       = 0xDEAD,
 			style         = 1,
 		},
+
+		wielditem = player:hud_add {
+			hud_elem_type = "text",
+			position      = {x = 0.5, y = 1},
+			offset        = {x = 0,   y = -65 - (i3.modules.hudbars and (ceil(hb.hudbars_count / 2) * 25) or 25)},
+			alignment     = {x = 0,   y = -1},
+			number        = 0xffffff,
+			text          = "",
+			z_index       = 0xDEAD,
+			style         = 1,
+		},
 	}
 end
 
@@ -84,6 +95,50 @@ local function show_hud(player, data)
 	end
 end
 
+core.register_globalstep(function(dt)
+	local players = get_connected_players()
+	players[0] = #players
+
+	for i = 1, players[0] do
+		local player = players[i]
+		local name = player:get_player_name()
+		local data = i3.data[name]
+		if not data then return end
+
+		local function reset()
+			player:hud_change(data.hud.wielditem, "text", "")
+			data.timer = 0
+		end
+
+		if not data.wielditem_hud then
+			return reset()
+		end
+
+		data.timer = (data.timer or 0) + dt
+
+		local wielditem = player:get_wielded_item()
+		local wieldname = wielditem:get_name()
+
+		if wieldname == data.old_wielditem then
+			if data.timer >= i3.settings.wielditem_fade_after then
+				return reset()
+			end
+			return
+		end
+
+		data.old_wielditem = wieldname
+
+		local meta = wielditem:get_meta()
+		local meta_desc = meta:get_string"short_description"
+		      meta_desc = meta_desc:gsub("\27", "")
+		      meta_desc = core.strip_colors(meta_desc)
+
+		local desc = meta_desc ~= "" and meta_desc or wielditem:get_short_description()
+
+		player:hud_change(data.hud.wielditem, "text", desc:trim())
+	end
+end)
+
 core.register_globalstep(function()
 	local players = get_connected_players()
 	players[0] = #players