Add an isometric area preview on Waypoints

.luacheckrc

@@ -13,6 +13,8 @@ read_globals = {
 	"string",
 	"table",
 	"ItemStack",
+	"VoxelArea",
+	"VoxelManip",
 }
 
 globals = {

README.md

@@ -14,6 +14,7 @@ This mod requires **Minetest 5.4+**
    - Progressive Mode¹
    - Quick Crafting
    - 3D Player Model Real-Time Preview
+   - Isometric Area Preview
    - Inventory Sorting (+ options: compression, reverse mode, automation, etc.)
    - Item List Compression (**`moreblocks`** is supported)
    - Item Bookmarks

init.lua

@@ -38,6 +38,8 @@ i3 = {
 	fuel_cache = {},
 	usages_cache = {},
 	recipes_cache = {},
+	content_ids = {},
+	cubes = {},
 
 	tabs = {},
 	craft_types = {},
@@ -49,6 +51,7 @@ i3 = {
 	files = {
 		api = lf("/src/api.lua"),
 		bags = lf("/src/bags.lua"),
+		caches = lf("/src/caches.lua"),
 		callbacks = lf("/src/callbacks.lua"),
 		common = lf("/src/common.lua"),
 		compress = lf("/src/compress.lua"),
@@ -57,7 +60,6 @@ i3 = {
 		gui = lf("/src/gui.lua"),
 		model_alias = lf("/src/model_aliases.lua"),
 		progressive = lf("/src/progressive.lua"),
-		recipes = lf("/src/recipes.lua"),
 		styles = lf("/src/styles.lua"),
 	},
 
@@ -80,7 +82,7 @@ i3.data = dslz(storage:get_string"data") or {}
 
 local init_bags = i3.files.bags()
 local init_inventories = i3.files.detached()
-local init_recipes = i3.files.recipes()
+local fill_caches = i3.files.caches()
 
 local function get_lang_code(info)
 	return info and info.lang_code
@@ -208,7 +210,7 @@ local function save_data(player_name)
 end
 
 core.register_on_mods_loaded(function()
-	init_recipes()
+	fill_caches()
 	disable_inventories()
 end)
 

src/caches.lua

@@ -1,8 +1,8 @@
 local replacements = {fuel = {}}
 
 local ItemStack = ItemStack
-local fmt, reg_items, reg_aliases = i3.get("fmt", "reg_items", "reg_aliases")
-local maxn, copy, insert, sort, match = i3.get("maxn", "copy", "insert", "sort", "match")
+local fmt, reg_items, reg_aliases, reg_nodes = i3.get("fmt", "reg_items", "reg_aliases", "reg_nodes")
+local maxn, copy, insert, sort, match, sub = i3.get("maxn", "copy", "insert", "sort", "match", "sub")
 
 local is_group, extract_groups, item_has_groups, groups_to_items =
 	i3.get("is_group", "extract_groups", "item_has_groups", "groups_to_items")
@@ -286,4 +286,23 @@ local function init_recipes()
 	end
 end
 
-return init_recipes
+local function init_cubes()
+	for name, def in pairs(reg_nodes) do
+		if def and def.drawtype == "normal" or def.drawtype == "liquid" or
+				sub(def.drawtype, 1, 9) == "glasslike" or
+				sub(def.drawtype, 1, 8) == "allfaces" then
+			local id = core.get_content_id(name)
+			i3.content_ids[id] = name
+
+			local tile = def.tiles[1].name or def.tiles[1]
+			local cube = core.inventorycube(tile, tile, tile)
+
+			i3.cubes[name] = cube
+		end
+	end
+end
+
+return function()
+	init_recipes()
+	init_cubes()
+end

src/callbacks.lua

@@ -2,8 +2,7 @@ local _, get_inventory_fs = i3.files.gui()
 
 local set_fs = i3.set_fs
 local ItemStack = ItemStack
-local S, clr = i3.get("S", "clr")
-local min, random = i3.get("min", "random")
+local S, min, random = i3.get("S", "min", "random")
 local reg_items, reg_aliases = i3.get("reg_items", "reg_aliases")
 local fmt, find, match, sub, lower, split = i3.get("fmt", "find", "match", "sub", "lower", "split")
 local vec_new, vec_eq, vec_round = i3.get("vec_new", "vec_eq", "vec_round")
@@ -82,14 +81,21 @@ i3.new_tab("inventory", {
 				local waypoint = data.waypoints[id]
 				if not waypoint then return end
 
-				if action == "delete" then
+				if action == "see" then
+					if data.waypoint_see and data.waypoint_see == id then
+						data.waypoint_see = nil
+					else
+						data.waypoint_see = id
+					end
+
+				elseif action == "delete" then
 					player:hud_remove(waypoint.id)
 					remove(data.waypoints, id)
 
 				elseif action == "teleport" then
 					local pos = vec_new(str_to_pos(waypoint.pos))
 					safe_teleport(player, pos)
-					msg(name, fmt("Teleported to %s", clr("#ff0", waypoint.name)))
+					msg(name, S("Teleported to: @1", waypoint.name))
 
 				elseif action == "refresh" then
 					local color = random(0xffffff)
@@ -116,6 +122,7 @@ i3.new_tab("inventory", {
 		if fields.quit then
 			data.confirm_trash = nil
 			data.show_settings = nil
+			data.waypoint_see = nil
 
 		elseif fields.trash then
 			data.show_settings = nil
@@ -140,6 +147,9 @@ i3.new_tab("inventory", {
 		elseif fields.close_settings then
 			data.show_settings = nil
 
+		elseif fields.close_preview then
+			data.waypoint_see = nil
+
 		elseif fields.sort then
 			sort_inventory(player, data)
 

src/common.lua

@@ -1,5 +1,7 @@
 local ItemStack = ItemStack
 local loadstring = loadstring
+
+local vec_add, vec_mul = vector.add, vector.multiply
 local sort, concat, insert = table.sort, table.concat, table.insert
 local min, floor, ceil = math.min, math.floor, math.ceil
 local fmt, find, match, gmatch, sub, split, lower =
@@ -319,7 +321,7 @@ local function spawn_item(player, stack)
 	local dir     = player:get_look_dir()
 	local ppos    = player:get_pos()
 	      ppos.y  = ppos.y + player:get_properties().eye_height
-	local look_at = vector.add(ppos, vector.multiply(dir, 1))
+	local look_at = vec_add(ppos, vec_mul(dir, 1))
 
 	core.add_item(look_at, stack)
 end
@@ -410,7 +412,7 @@ local function safe_teleport(player, pos)
 
 	pos.y = pos.y + 0.5
 	local vel = player:get_velocity()
-	player:add_velocity(vector.multiply(vel, -1))
+	player:add_velocity(vec_mul(vel, -1))
 	player:set_pos(pos)
 end
 
@@ -691,6 +693,8 @@ local _ = {
 	-- Vectors
 	vec_new = vector.new,
 	vec_add = vector.add,
+	vec_sub = vector.subtract,
+	vec_mul = vector.multiply,
 	vec_round = vector.round,
 	vec_eq = vector.equals,
 }

src/gui.lua

@@ -4,16 +4,19 @@ local model_aliases = i3.files.model_alias()
 local PNG, styles, fs_elements, colors = i3.files.styles()
 
 local ItemStack = ItemStack
+local VoxelArea, VoxelManip = VoxelArea, VoxelManip
+
 local S, ES, translate = i3.get("S", "ES", "translate")
 local clr, ESC, check_privs = i3.get("clr", "ESC", "check_privs")
+local vec_new, vec_sub, vec_round = i3.get("vec_new", "vec_sub", "vec_round")
 local min, max, floor, ceil, round = i3.get("min", "max", "floor", "ceil", "round")
 local sprintf, find, match, sub, upper = i3.get("fmt", "find", "match", "sub", "upper")
 local reg_items, reg_tools, reg_entities = i3.get("reg_items", "reg_tools", "reg_entities")
 local maxn, sort, concat, copy, insert, remove, unpack =
 	i3.get("maxn", "sort", "concat", "copy", "insert", "remove", "unpack")
 
-local true_str, is_fav, is_num, get_group =
-	i3.get("true_str", "is_fav", "is_num", "get_group")
+local true_str, is_fav, is_num, get_group, str_to_pos =
+	i3.get("true_str", "is_fav", "is_num", "get_group", "str_to_pos")
 local groups_to_items, compression_active, compressible =
 	i3.get("groups_to_items", "compression_active", "compressible")
 local get_sorting_idx, is_group, extract_groups, item_has_groups =
@@ -224,6 +227,45 @@ local function get_award_list(data, fs, ctn_len, yextra, award_list, awards_unlo
 	end
 end
 
+local function get_isometric_view(fs, pos, X, Y)
+	pos = vec_round(pos)
+	local size = 0.25
+	local width = 8
+
+	local pos1 = vec_new(pos.x - width, pos.y - 1, pos.z - width)
+	local pos2 = vec_new(pos.x + width, pos.y + 3, pos.z + width)
+	core.emerge_area(pos1, pos2)
+
+	local vm = VoxelManip(pos1, pos2)
+	local emin, emax = vm:read_from_map(pos1, pos2)
+	local area = VoxelArea:new{MinEdge = emin, MaxEdge = emax}
+	local data = vm:get_data()
+
+	local t = {}
+	data[0] = #data
+
+	for i = 1, data[0] do
+		local id = data[i]
+		t[i] = i3.content_ids[id]
+	end
+
+	for idx in area:iterp(pos1, pos2) do
+		local name = t[idx]
+		local cube = i3.cubes[name]
+
+		if cube then
+			local p = area:position(idx)
+			      p = vec_sub(p, pos)
+
+			local x = 2 + (size / 2 * (p.z - p.x))
+			local y = 1.15 + (size / 4 * (p.x + p.z - 2 * p.y))
+			local elem = fmt("image[%f,%f;%.1f,%.1f;%s]", x + X, y + Y, size, size, cube)
+
+			insert(fs, elem)
+		end
+	end
+end
+
 local function get_waypoint_fs(fs, data, player, yextra, ctn_len)
 	fs(fmt("box[0,%f;4.9,0.6;#bababa25]", yextra + 1.1))
 	fs("label", 0, yextra + 0.85, ES"Waypoint name:")
@@ -254,10 +296,19 @@ local function get_waypoint_fs(fs, data, player, yextra, ctn_len)
 			hex = "0" .. hex
 		end
 
+		local teleport_priv = check_privs(player, {teleport = true})
+		local waypoint_preview = data.waypoint_see and data.waypoint_see == i
+
 		fs("label", 0.15, y + 0.33, clr(fmt("#%s", hex), waypoint_name))
-		fs("tooltip", 0, y, ctn_len - 2.5, 0.65,
-			fmt("Name: %s\nPosition:%s", clr("#dbeeff", v.name),
-				v.pos:sub(2,-2):gsub("(%-*%d*%.?%d+)", clr("#dbeeff", " %1"))))
+
+		local tooltip = fmt("Name: %s\nPosition:%s", clr("#dbeeff", v.name),
+				v.pos:sub(2,-2):gsub("(%-*%d*%.?%d+)", clr("#dbeeff", " %1")))
+
+		if teleport_priv then
+			tooltip = fmt("%s\n%s", tooltip, clr("#ff0", ES"[Click to teleport]"))
+		end
+
+		fs("tooltip", 0, y, ctn_len - 2.1, 0.65, tooltip)
 
 		local del = fmt("waypoint_%u_delete", i)
 		fs(fmt("style[%s;fgimg=%s;fgimg_hovered=%s;content_offset=0]", del, PNG.trash, PNG.trash_hover))
@@ -269,17 +320,31 @@ local function get_waypoint_fs(fs, data, player, yextra, ctn_len)
 		fs("image_button", ctn_len - 1, yi, icon_size, icon_size, "", rfs, "")
 		fs(fmt("tooltip[%s;%s]", rfs, ES"Change color"))
 
+		local see = fmt("waypoint_%u_see", i)
+		fs(fmt("style[%s;fgimg=%s;fgimg_hovered=%s;content_offset=0]",
+			see, waypoint_preview and PNG.search_hover or PNG.search, PNG.search, PNG.search_hover))
+		fs("image_button", ctn_len - 1.5, yi, icon_size, icon_size, "", see, "")
+		fs(fmt("tooltip[%s;%s]", see, ES"Preview the waypoint area"))
+
 		local vsb = fmt("waypoint_%u_hide", i)
 		fs(fmt("style[%s;fgimg=%s;content_offset=0]", vsb, v.hide and PNG.nonvisible or PNG.visible))
-		fs("image_button", ctn_len - 1.5, yi, icon_size, icon_size, "", vsb, "")
+		fs("image_button", ctn_len - 2, yi, icon_size, icon_size, "", vsb, "")
 		fs(fmt("tooltip[%s;%s]", vsb, v.hide and ES"Show waypoint" or ES"Hide waypoint"))
 
-		if check_privs(player, {teleport = true}) then
+		if teleport_priv then
 			local tp = fmt("waypoint_%u_teleport", i)
-			fs(fmt("style[%s;fgimg=%s;fgimg_hovered=%s;content_offset=0]",
-				tp, PNG.teleport, PNG.teleport_hover))
-			fs("image_button", ctn_len - 2, yi, icon_size, icon_size, "", tp, "")
-			fs(fmt("tooltip[%s;%s]", tp, ES"Teleport to waypoint"))
+			fs("button", 0, y, ctn_len - 2.1, 0.6, tp, "")
+		end
+
+		if waypoint_preview then
+			fs("image", 0.25, y - 3.5, 5, 4, PNG.bg_content)
+			fs("button", 0.25, y - 3.35, 5, 0.55, "area_preview", v.name)
+			fs("image_button", 4.65, y - 3.25, 0.25, 0.25,
+				PNG.cancel_hover .. "^\\[brighten", "close_preview", "")
+
+			local pos = vec_new(str_to_pos(data.waypoints[i].pos))
+			get_isometric_view(fs, pos, 0.6, y - 2.5)
+			fs("image", 2.7, y - 1.5, 0.3, 0.3, PNG.flag)
 		end
 	end
 

src/styles.lua

@@ -32,13 +32,13 @@ local PNG = {
 	awards = "i3_award.png",
 	skins = "i3_skin.png",
 	waypoints = "i3_waypoint.png",
-	teleport = "i3_teleport.png",
 	add = "i3_add.png",
 	refresh = "i3_refresh.png",
 	visible = "i3_visible.png^\\[brighten",
 	nonvisible = "i3_non_visible.png",
 	exit = "i3_exit.png",
 	home = "i3_home.png",
+	flag = "i3_flag.png",
 
 	cancel_hover = "i3_cancel.png^\\[brighten",
 	search_hover = "i3_search.png^\\[brighten",
@@ -57,7 +57,6 @@ local PNG = {
 	awards_hover = "i3_award_hover.png",
 	skins_hover = "i3_skin_hover.png",
 	waypoints_hover = "i3_waypoint_hover.png",
-	teleport_hover = "i3_teleport.png^\\[brighten",
 	add_hover = "i3_add.png^\\[brighten",
 	refresh_hover = "i3_refresh.png^\\[brighten",
 	exit_hover = "i3_exit.png^\\[brighten",