Add waypoints support (requires current minetest from git)

datastorage.lua

@@ -0,0 +1,83 @@
+datastorage={}
+datastorage["!registered_players"]={}
+
+datastorage.save_data = function(table_pointer)
+	local data = minetest.serialize( datastorage[table_pointer] )
+	local path = minetest.get_worldpath().."/datastorage_"..table_pointer..".data"
+	local file = io.open( path, "w" )
+	if( file ) then
+		file:write( data )
+		file:close()
+		return true
+	else return nil
+	end
+end
+
+datastorage.load_data = function(table_pointer)
+	local path = minetest.get_worldpath().."/datastorage_"..table_pointer..".data"
+	local file = io.open( path, "r" )
+	if( file ) then
+		local data = file:read("*all")
+		datastorage[table_pointer] = minetest.deserialize( data )
+		file:close()
+	return true
+	else return nil
+	end
+end
+
+datastorage.get_container = function (player, key)
+	local player_name = player:get_player_name()
+	local container = datastorage[player_name]
+	if container[key] == nil then
+		container[key] = {}
+	end
+	datastorage.save_data(player_name)
+	return container[key]
+end
+
+-- forced save of all player's data
+datastorage.save_container = function (player)
+	local player_name = player:get_player_name()
+	datastorage.save_data(player_name)
+end
+
+
+-- Init
+if datastorage.load_data("!registered_players") == nil then
+	datastorage["!registered_players"]={}
+	datastorage.save_data("!registered_players")
+end
+
+minetest.register_on_joinplayer(function(player)
+	local player_name = player:get_player_name()
+	local registered = nil
+	for __,tab in ipairs(datastorage["!registered_players"]) do
+		if tab["player_name"] == player_name then registered = true break end
+	end
+	if registered == nil then
+		local new={}
+		new["player_name"]=player_name
+		table.insert(datastorage["!registered_players"],new)
+		datastorage[player_name]={}
+		datastorage.save_data("!registered_players")
+		datastorage.save_data(player_name)
+	else 
+		datastorage.load_data(player_name)
+	end
+end
+)
+
+minetest.register_on_leaveplayer(function(player)
+	local player_name = player:get_player_name()
+	datastorage.save_data(player_name)
+	datastorage[player_name] = nil
+end
+)
+
+minetest.register_on_shutdown(function()
+	for __,tab in ipairs(datastorage["!registered_players"]) do
+		if datastorage[tab["player_name"]] == nil then break end
+		datastorage.save_data(tab["player_name"]) 
+	end
+end
+)

init.lua

@@ -38,8 +38,10 @@ if creative_inventory then
 	end
 end
 
+dofile(modpath.."/datastorage.lua")
 dofile(modpath.."/api.lua")
 dofile(modpath.."/internal.lua")
 dofile(modpath.."/callbacks.lua")
 dofile(modpath.."/register.lua")
 dofile(modpath.."/bags.lua")
+dofile(modpath.."/waypoints.lua")

waypoints.lua

@@ -0,0 +1,215 @@
+unified_inventory.hud_colors = {
+			{"#FFFFFF", 0xFFFFFF, "White"},
+			{"#DBBB00", 0xf1d32c, "Yellow"},
+			{"#DD0000", 0xDD0000, "Red"},
+			{"#2cf136", 0x2cf136, "Green"},
+			{"#2c4df1", 0x2c4df1, "Blue"},		
+			}
+unified_inventory.hud_colors_max = #unified_inventory.hud_colors
+			
+unified_inventory.register_page("waypoints", {
+	get_formspec = function(player)
+		local waypoints = datastorage.get_container (player, "waypoints")
+		local formspec = "background[0,4.5;8,4;ui_main_inventory.png]"..
+			"image[0,0;1,1;ui_waypoints_icon.png]"..
+			"label[1,0;Waypoints]" 
+
+		-- Tabs buttons:
+		local i
+		for i = 1, 5, 1 do
+			if i == waypoints.selected then
+				formspec = formspec ..
+					"image_button[0.0,".. 0.2 + i*0.7 ..";.8,.8;ui_blue_icon_background.png^ui_"..
+						i .."_icon.png;select_waypoint".. i .. ";]"
+			else
+				formspec = formspec ..
+					"image_button[0.0,".. 0.2 + i*0.7 ..";.8,.8;ui_"..
+					i .."_icon.png;select_waypoint".. i .. ";]"
+			end
+		end
+		
+		i = waypoints.selected
+		
+		-- Main buttons:
+		formspec = formspec .. 
+				"image_button[4.5,3.7;.8,.8;ui_waypoint_set_icon.png;set_waypoint".. i .. ";]"
+
+		if waypoints[i].active then  
+			formspec = formspec ..
+				"image_button[5.2,3.7;.8,.8;ui_on_icon.png;toggle_waypoint".. i .. ";]"
+		else 
+			formspec = formspec ..
+				"image_button[5.2,3.7;.8,.8;ui_off_icon.png;toggle_waypoint".. i .. ";]"
+		end	
+
+		if waypoints[i].display_pos then
+			formspec = formspec .. 
+				"image_button[5.9,3.7;.8,.8;ui_green_icon_background.png^ui_xyz_icon.png;toggle_display_pos".. i .. ";]"
+		else
+			formspec = formspec .. 
+				"image_button[5.9,3.7;.8,.8;ui_red_icon_background.png^ui_xyz_icon.png;toggle_display_pos".. i .. ";]"
+		end
+
+		formspec = formspec .. 
+				"image_button[6.6,3.7;.8,.8;ui_circular_arrows_icon.png;toggle_color".. i .. ";]"..
+				"image_button[7.3,3.7;.8,.8;ui_pencil_icon.png;rename_waypoint".. i .. ";]"
+		
+		-- Waypoint's info:	
+		if waypoints[i].active then
+			formspec = formspec .. 	"label[1,0.8;Waypoint active]"
+		else 
+			formspec = formspec .. 	"label[1,0.8;Waypoint inactive]"
+		end
+
+		if waypoints[i].edit then
+			formspec = formspec ..
+				"field[1.3,3.2;6,.8;rename_box" .. i .. ";;"..waypoints[i].name.."]" ..
+				"image_button[7.3,2.9;.8,.8;ui_ok_icon.png;confirm_rename".. i .. ";]"
+		end
+		
+		formspec = formspec .. "label[1,1.3;World position: " .. 
+			minetest.pos_to_string(waypoints[i].world_pos) .. "]" ..
+			"label[1,1.8;Name: ".. waypoints[i].name .. "]" ..
+			"label[1,2.3;Hud text color: " ..
+			unified_inventory.hud_colors[waypoints[i].color][3] .. "]"
+			
+		return {formspec=formspec}
+	end,
+})
+
+unified_inventory.register_button("waypoints", {
+	type = "image",
+	image = "ui_waypoints_icon.png",
+})
+
+unified_inventory.update_hud = function (player, waypoint)	
+	local name
+	if waypoint.display_pos then
+		name = "(".. 
+			waypoint.world_pos.x .. "," ..
+			waypoint.world_pos.y .. "," ..
+			waypoint.world_pos.z .. ")"
+		if waypoint.name ~= "" then 	 
+			name = name .. ", " ..
+			waypoint.name
+		end
+	else
+		name = waypoint.name
+	end
+	if waypoint.active then
+		player:hud_remove(waypoint.hud)
+		waypoint.hud = player:hud_add({
+			hud_elem_type = "waypoint",
+			number = unified_inventory.hud_colors[waypoint.color][2] ,
+			name = name,
+			text = "m",
+			world_pos = waypoint.world_pos
+		})
+	else 
+		if waypoint.hud ~= nil then 
+			player:hud_remove(waypoint.hud)
+			waypoint.hud = nil
+		end
+	end
+end
+
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	if formname ~= "" then
+		return
+	end
+
+	local update_formspec = false
+	local update_hud = false
+	
+	local waypoints = datastorage.get_container (player, "waypoints")		
+	for i = 1, 5, 1 do
+
+		if fields["select_waypoint"..i] then
+			waypoints.selected = i
+			update_formspec = true
+		end
+
+		if fields["toggle_waypoint"..i] then
+			waypoints[i].active = not (waypoints[i].active)
+			update_hud = true
+			update_formspec = true
+		end
+		
+		if fields["set_waypoint"..i] then
+			local pos = player:getpos()
+			pos.x = math.floor(pos.x)
+			pos.y = math.floor(pos.y)
+			pos.z = math.floor(pos.z)
+			waypoints[i].world_pos = pos
+			update_hud = true
+			update_formspec = true
+		end
+		
+		if fields["rename_waypoint"..i] then
+			waypoints[i].edit = true
+			update_formspec = true
+		end
+
+		if fields["toggle_display_pos"..i] then
+			waypoints[i].display_pos = not waypoints[i].display_pos
+			update_hud = true
+			update_formspec = true
+		end
+
+		if fields["toggle_color"..i] then
+			local color = waypoints[i].color
+			color = color + 1
+			if color > unified_inventory.hud_colors_max then
+				color = 1
+			end
+			waypoints[i].color = color
+			update_hud = true
+			update_formspec = true
+		end
+
+		if fields["confirm_rename"..i] then
+			waypoints[i].edit = false
+			waypoints[i].name = fields["rename_box"..i] 
+			update_hud = true
+			update_formspec = true
+		end
+
+		if update_hud then
+			unified_inventory.update_hud (player, waypoints[i])
+		end
+	
+		if update_formspec then
+			unified_inventory.set_inventory_formspec(player, "waypoints")
+		end
+	
+	end
+end)
+
+minetest.register_on_joinplayer(function(player)
+	local waypoints = datastorage.get_container (player, "waypoints")
+	local need_save = false
+	-- Create new waypoints data
+		for i = 1, 5, 1 do
+			if waypoints[i] == nil then 
+				need_save = true
+				waypoints[i] = {
+					edit = false,
+					active = false,
+					display_pos = true,
+					color = 1,
+					name = "Waypoint ".. i,
+					world_pos = {x = 0, y = 0, z = 0},
+				}
+			end	
+		end
+	if need_save then datastorage.save_container (player) end
+
+	-- Initialize waypoints
+	minetest.after(0.5, function()
+		waypoints.selected = 1
+		for i = 1, 5, 1 do
+			waypoints[i].edit = false
+			unified_inventory.update_hud (player, waypoints[i])		
+		end
+	end)
+end)