Settings GUI: Move shadow presets to Shaders, remove Most Used (#13713)

builtin/mainmenu/settings/shadows_component.lua

@@ -0,0 +1,121 @@
+--Minetest
+--Copyright (C) 2021-2 x2048
+--Copyright (C) 2022-3 rubenwardy
+--
+--This program is free software; you can redistribute it and/or modify
+--it under the terms of the GNU Lesser General Public License as published by
+--the Free Software Foundation; either version 2.1 of the License, or
+--(at your option) any later version.
+--
+--This program is distributed in the hope that it will be useful,
+--but WITHOUT ANY WARRANTY; without even the implied warranty of
+--MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+--GNU Lesser General Public License for more details.
+--
+--You should have received a copy of the GNU Lesser General Public License along
+--with this program; if not, write to the Free Software Foundation, Inc.,
+--51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+
+local shadow_levels_labels = {
+	fgettext("Disabled"),
+	fgettext("Very Low"),
+	fgettext("Low"),
+	fgettext("Medium"),
+	fgettext("High"),
+	fgettext("Very High"),
+	fgettext("Custom"),
+}
+local PRESET_DISABLED = 1
+local PRESET_CUSTOM = #shadow_levels_labels
+
+
+-- max distance, texture size, texture_32bit, filters, map color
+local shadow_presets = {
+	[2] = { 62,  512,  true, 0, false },
+	[3] = { 93,  1024, true, 0, false },
+	[4] = { 140, 2048, true, 1, false },
+	[5] = { 210, 4096, true, 2,  true },
+	[6] = { 300, 8192, true, 2,  true },
+}
+
+
+local function detect_mapping_idx()
+	if not core.settings:get_bool("enable_dynamic_shadows", false) then
+		return PRESET_DISABLED
+	end
+
+	local shadow_map_max_distance = tonumber(core.settings:get("shadow_map_max_distance"))
+	local shadow_map_texture_size = tonumber(core.settings:get("shadow_map_texture_size"))
+	local shadow_map_texture_32bit = core.settings:get_bool("shadow_map_texture_32bit", false)
+	local shadow_filters = tonumber(core.settings:get("shadow_filters"))
+	local shadow_map_color = core.settings:get_bool("shadow_map_color", false)
+
+	for i = 2, 6 do
+		local preset = shadow_presets[i]
+		if preset[1] == shadow_map_max_distance and
+				preset[2] == shadow_map_texture_size and
+				preset[3] == shadow_map_texture_32bit and
+				preset[4] == shadow_filters and
+				preset[5] == shadow_map_color then
+			return i
+		end
+	end
+	return PRESET_CUSTOM
+end
+
+
+local function apply_preset(preset)
+	if preset then
+		core.settings:set_bool("enable_dynamic_shadows", true)
+		core.settings:set("shadow_map_max_distance", preset[1])
+		core.settings:set("shadow_map_texture_size", preset[2])
+		core.settings:set_bool("shadow_map_texture_32bit", preset[3])
+		core.settings:set("shadow_filters", preset[4])
+		core.settings:set_bool("shadow_map_color", preset[5])
+	else
+		core.settings:set_bool("enable_dynamic_shadows", false)
+	end
+end
+
+
+return {
+	query_text = "Shadows",
+	requires = {
+		shaders = true,
+		opengl = true,
+	},
+	get_formspec = function(self, avail_w)
+		local labels = table.copy(shadow_levels_labels)
+		local idx = detect_mapping_idx()
+
+		-- Remove "custom" if not already selected
+		if idx ~= PRESET_CUSTOM then
+			table.remove(labels, PRESET_CUSTOM)
+		end
+
+		local fs =
+			"label[0,0.2;" .. fgettext("Dynamic shadows") .. "]" ..
+			"dropdown[0,0.4;3,0.8;dd_shadows;" .. table.concat(labels, ",") .. ";" .. idx .. ";true]" ..
+			"label[0,1.5;" .. core.colorize("#bbb", fgettext("(The game will need to enable shadows as well)")) .. "]"
+		return fs, 1.8
+	end,
+	on_submit = function(self, fields)
+		if fields.dd_shadows then
+			local old_shadow_level_idx = detect_mapping_idx()
+			local shadow_level_idx = tonumber(fields.dd_shadows)
+			if shadow_level_idx == nil or shadow_level_idx == old_shadow_level_idx then
+				return false
+			end
+
+			if shadow_level_idx == PRESET_CUSTOM then
+				core.settings:set_bool("enable_dynamic_shadows", true)
+				return true
+			end
+
+			local preset = shadow_presets[shadow_level_idx]
+			apply_preset(preset)
+			return true
+		end
+	end,
+}