Merge pull request 'Mobile fixes & improvements (cherry-pick from Mineclonia)' (#4685) from grorp/MineClone2:vl-mobile-fixes-and-improvements into master

Reviewed-on: https://git.minetest.land/VoxeLibre/VoxeLibre/pulls/4685
Reviewed-by: the-real-herowl <the-real-herowl@noreply.git.minetest.land>

mods/HUD/mcl_inventory/creative.lua

@@ -418,6 +418,18 @@ minetest.register_on_joinplayer(function(player)
 	end
 end)
 
+---@param player mt.PlayerObjectRef
+local function is_touch_enabled(playername)
+	-- Minetest < 5.7.0 support
+	if not minetest.get_player_window_information then
+		return false
+	end
+	local window = minetest.get_player_window_information(playername)
+	-- Always return a boolean (not nil) to avoid false-negatives when
+	-- comparing to a boolean later.
+	return window and window.touch_controls or false
+end
+
 ---@param player mt.PlayerObjectRef
 function mcl_inventory.set_creative_formspec(player)
 	local playername = player:get_player_name()
@@ -566,8 +578,10 @@ function mcl_inventory.set_creative_formspec(player)
 			bg_img = "crafting_creative_inactive" .. button_bg_postfix[this_tab] .. ".png"
 		end
 		return table.concat({
-			"style[" .. this_tab .. ";border=false;bgimg=;bgimg_pressed=;noclip=true]",
-			"image[" .. offset[this_tab] .. ";1.5,1.44;" .. bg_img .. "]",
+			"style[" .. this_tab ..       ";border=false;bgimg=;bgimg_pressed=]",
+			"style[" .. this_tab .. "_outer;border=false;bgimg=" .. bg_img ..
+				";bgimg_pressed=" .. bg_img .. "]",
+			"button[" .. offset[this_tab] .. ";1.5,1.44;" .. this_tab .. "_outer;]",
 			"item_image_button[" .. boffset[this_tab] .. ";1,1;" .. tab_icon[this_tab] .. ";" .. this_tab .. ";]",
 		})
 	end
@@ -577,11 +591,21 @@ function mcl_inventory.set_creative_formspec(player)
 		caption = "label[0.375,0.375;" .. F(C(mcl_formspec.label_color, filtername[name])) .. "]"
 	end
 
+	local touch_enabled = is_touch_enabled(playername)
+	players[playername].last_touch_enabled = touch_enabled
+
 	local formspec = table.concat({
 		"formspec_version[6]",
-		"size[13,8.75]",
+		-- Original formspec height was 8.75, increased to include tab buttons.
+		-- This avoids tab buttons going off-screen with high scaling values.
+		"size[13,11.43]",
+		-- Use as much space as possible on mobile - the tab buttons are a lot
+		-- of padding already.
+		touch_enabled and "padding[-0.015,-0.015]" or "",
 
-		"style_type[image;noclip=true]",
+		"no_prepend[]", mcl_vars.gui_nonbg, mcl_vars.gui_bg_color,
+		"background9[0,1.34;13,8.75;mcl_base_textures_background9.png;;7]",
+		"container[0,1.34]",
 
 		-- Hotbar
 		mcl_formspec.get_itemslot_bg_v4(0.375, 7.375, 9, 1),
@@ -638,6 +662,7 @@ function mcl_inventory.set_creative_formspec(player)
 			"set_focus[search;true]",
 		})
 	end
+	formspec = formspec .. "container_end[]"
 	if pagenum then formspec = formspec .. "p" .. tostring(pagenum) end
 	player:set_inventory_formspec(formspec)
 end
@@ -655,54 +680,54 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 
 	local name = player:get_player_name()
 
-	if fields.blocks then
+	if fields.blocks or fields.blocks_outer then
 		if players[name].page == "blocks" then return end
 		set_inv_page("blocks", player)
 		page = "blocks"
-	elseif fields.deco then
+	elseif fields.deco or fields.deco_outer then
 		if players[name].page == "deco" then return end
 		set_inv_page("deco", player)
 		page = "deco"
-	elseif fields.redstone then
+	elseif fields.redstone or fields.redstone_outer then
 		if players[name].page == "redstone" then return end
 		set_inv_page("redstone", player)
 		page = "redstone"
-	elseif fields.rail then
+	elseif fields.rail or fields.rail_outer then
 		if players[name].page == "rail" then return end
 		set_inv_page("rail", player)
 		page = "rail"
-	elseif fields.misc then
+	elseif fields.misc or fields.misc_outer then
 		if players[name].page == "misc" then return end
 		set_inv_page("misc", player)
 		page = "misc"
-	elseif fields.nix then
+	elseif fields.nix or fields.nix_outer then
 		set_inv_page("all", player)
 		page = "nix"
-	elseif fields.food then
+	elseif fields.food or fields.food_outer then
 		if players[name].page == "food" then return end
 		set_inv_page("food", player)
 		page = "food"
-	elseif fields.tools then
+	elseif fields.tools or fields.tools_outer then
 		if players[name].page == "tools" then return end
 		set_inv_page("tools", player)
 		page = "tools"
-	elseif fields.combat then
+	elseif fields.combat or fields.combat_outer then
 		if players[name].page == "combat" then return end
 		set_inv_page("combat", player)
 		page = "combat"
-	elseif fields.mobs then
+	elseif fields.mobs or fields.mobs_outer then
 		if players[name].page == "mobs" then return end
 		set_inv_page("mobs", player)
 		page = "mobs"
-	elseif fields.brew then
+	elseif fields.brew or fields.brew_outer then
 		if players[name].page == "brew" then return end
 		set_inv_page("brew", player)
 		page = "brew"
-	elseif fields.matr then
+	elseif fields.matr or fields.matr_outer  then
 		if players[name].page == "matr" then return end
 		set_inv_page("matr", player)
 		page = "matr"
-	elseif fields.inv then
+	elseif fields.inv or fields.inv_outer then
 		if players[name].page == "inv" then return end
 		page = "inv"
 	elseif fields.search == "" and not fields.creative_next and not fields.creative_prev then
@@ -818,3 +843,19 @@ minetest.register_on_player_inventory_action(function(player, action, inventory,
 		player:get_inventory():set_stack("main", inventory_info.index, stack)
 	end
 end)
+
+-- This is necessary because get_player_window_information may return nil in
+-- on_joinplayer.
+-- (Also, Minetest plans to add support for toggling touchscreen mode in-game.)
+minetest.register_globalstep(function(dtime)
+	for _, player in pairs(minetest.get_connected_players()) do
+		local name = player:get_player_name()
+
+		if minetest.is_creative_enabled(name) then
+			local touch_enabled = is_touch_enabled(name)
+			if touch_enabled ~= players[name].last_touch_enabled then
+				mcl_inventory.set_creative_formspec(player)
+			end
+		end
+	end
+end)

mods/ITEMS/mcl_bows/bow.lua

@@ -169,6 +169,7 @@ S("The speed and damage of the arrow increases the longer you charge. The regula
 		return itemstack
 	end,
 	groups = {weapon=1,weapon_ranged=1,bow=1,cannot_block=1,enchantability=1},
+	touch_interaction = "short_dig_long_place",
 	_mcl_uses = 385,
 })
 
@@ -235,6 +236,7 @@ for level=0, 2 do
 		on_place = function(itemstack)
 			return itemstack
 		end,
+		touch_interaction = "short_dig_long_place",
 		_mcl_uses = 385,
 	})
 end

mods/ITEMS/mcl_bows/crossbow.lua

@@ -159,6 +159,7 @@ S("The speed and damage of the arrow increases the longer you charge. The regula
 		return itemstack
 	end,
 	groups = {weapon=1,weapon_ranged=1,crossbow=1,cannot_block=1,enchantability=1},
+	touch_interaction = "short_dig_long_place",
 	_mcl_uses = 326,
 })
 
@@ -194,6 +195,7 @@ S("The speed and damage of the arrow increases the longer you charge. The regula
 		return itemstack
 	end,
 	groups = {weapon=1,weapon_ranged=1,crossbow=1,cannot_block=1,enchantability=1,not_in_creative_inventory=1},
+	touch_interaction = "short_dig_long_place",
 	_mcl_uses = 326,
 })
 
@@ -257,6 +259,7 @@ for level=0, 2 do
 		on_place = function(itemstack)
 			return itemstack
 		end,
+		touch_interaction = "short_dig_long_place",
 		_mcl_uses = 385,
 	})
 end

mods/ITEMS/mcl_spyglass/init.lua

@@ -6,6 +6,7 @@ minetest.register_tool("mcl_spyglass:spyglass",{
 	inventory_image = "mcl_spyglass.png",
 	stack_max = 1,
 	_mcl_toollike_wield = true,
+	touch_interaction = "short_dig_long_place",
 })
 
 minetest.register_craft({