working waypoints

functions.lua

@@ -21,7 +21,7 @@ missions.start_mission = function(player, mission)
 
 	for i,m in pairs(playermissions) do
 		if m.title == mission.title then
-			minetest.chat_send_player(playername, "Mission alread running: " .. mission.title)
+			minetest.chat_send_player(playername, "Mission already running: " .. mission.title)
 			return
 		end
 	end
@@ -32,10 +32,27 @@ missions.start_mission = function(player, mission)
 	missions.save_missions()
 end
 
+missions.remove_mission = function(player, mission)
+	local playername = player:get_player_name()
+	local playermissions = missions.list[playername]
+	if playermissions == nil then playermissions = {} end
 
+	for i,m in pairs(playermissions) do
+		if m.title == mission.title then
+			table.remove(playermissions, i)
+			return
+		end
+	end
+end
 
 
-local update_player_mission = function(player, mission, time)
+local update_player_mission = function(player, mission, remaining)
+	if remaining <= 0 then
+		-- mission timed-out
+		missions.hud_remove_mission(player, mission)
+		missions.remove_mission(player, mission)
+		minetest.chat_send_player(player:get_player_name(), "Mission timed out!: " .. mission.title)
+	end
 end
 
 local timer = 0
@@ -49,14 +66,15 @@ minetest.register_globalstep(function(dtime)
 			local playermissions = missions.list[playername]
 			if playermissions ~= nil then
 				for j,mission in pairs(playermissions) do
-					local diff = now - mission.start
-					print(playername .. ": " .. mission.title .. " == " .. diff .. " seconds")
+					local remaining = mission.time - (now - mission.start)
 
-					update_player_mission(player, mission, diff)
+					update_player_mission(player, mission, remaining)
 				end
 			end
+			missions.hud_update(player, playermissions)
 		end
 
 		timer = 0
 	end
-end)
+end)
+

hud.lua

@@ -0,0 +1,138 @@
+
+local HUD_POSITION = {x = 0.5, y = 0.2}
+local HUD_ALIGNMENT = {x = 1, y = 0}
+
+local hud = {} -- playerName -> {}
+
+minetest.register_on_joinplayer(function(player)
+	local playername = player:get_player_name()
+
+	local data = {}
+
+	data.title = player:hud_add({
+		hud_elem_type = "text",
+		position = HUD_POSITION,
+		offset = {x = 0,   y = 0},
+		text = "",
+		alignment = HUD_ALIGNMENT,
+		scale = {x = 100, y = 100},
+		number = 0xFFFFFF
+	})
+
+	data.mission = player:hud_add({
+		hud_elem_type = "text",
+		position = HUD_POSITION,
+		offset = {x = 0,   y = 35},
+		text = "",
+		alignment = HUD_ALIGNMENT,
+		scale = {x = 100, y = 100},
+		number = 0x00FF00
+	})
+
+	data.time = player:hud_add({
+		hud_elem_type = "text",
+		position = HUD_POSITION,
+		offset = {x = 0,   y = 70},
+		text = "",
+		alignment = HUD_ALIGNMENT,
+		scale = {x = 100, y = 100},
+		number = 0x00FF00
+	})
+
+	hud[playername] = data
+end)
+
+minetest.register_on_leaveplayer(function(player)
+	local playername = player:get_player_name()
+	hud[playername] = nil
+end)
+
+local format_time = function(seconds)
+	local minutes = math.floor(seconds / 60)
+	local secs = seconds - (minutes * 60)
+	if secs < 10 then
+		return minutes .. ":0" .. secs
+	else
+		return minutes .. ":" ..secs
+	end
+end
+
+missions.hud_remove_mission = function(player, mission)
+	-- remove waypoints from elapsed mission
+	if mission.hud ~= nil and mission.hud.source ~= nil then
+		player:hud_remove(mission.hud.source)
+	end
+
+	if mission.hud ~= nil and mission.hud.target ~= nil then
+		player:hud_remove(mission.hud.target)
+	end
+end
+
+missions.hud_update = function(player, playermissions)
+	local playername = player:get_player_name()
+
+	local now = os.time(os.date("!*t"))
+	local data = hud[playername]
+	local topMission = nil
+
+	if data ~= nil and playermissions ~= nil then
+		for i,mission in pairs(playermissions) do
+
+			if mission.hud == nil then
+				-- add waypoint markers if new mission
+				mission.hud = {}
+				if mission.source ~= nil then
+					mission.hud.source = player:hud_add({
+						hud_elem_type = "waypoint",
+						name = mission.source.title .. "(Source)",
+						text = "m",
+						number = 0x0000FF,
+						world_pos = {x=mission.source.x, y=mission.source.y, z=mission.source.z}
+					})
+				end
+				mission.hud.target = player:hud_add({
+					hud_elem_type = "waypoint",
+					name = mission.target.title .. "(Destination)",
+					text = "m",
+					number = 0x0000FF,
+					world_pos = {x=mission.target.x, y=mission.target.y, z=mission.target.z}
+				})
+			end
+
+
+			-- top mission check
+			if topMission == nil then
+				topMission = mission
+			else
+				local remainingTime = mission.time - (now - mission.start)
+				local topRemainingTime = topMission.time - (now - topMission.start)
+
+				if remainingTime < topRemainingTime then
+					topMission = mission
+				end
+			end
+		end
+	end
+
+	if topMission ~= nil then
+		-- show the first mission to time out
+		local remainingTime = topMission.time - (now - topMission.start)
+		player:hud_change(data.title, "text", "Missions: (1/" .. table.getn(playermissions) .. ")")
+		player:hud_change(data.mission, "text", topMission.title)
+		player:hud_change(data.time, "text", "" .. format_time(remainingTime))
+		if remainingTime > 60 then
+			player:hud_change(data.time, "number", 0x00FF00)
+			player:hud_change(data.mission, "number", 0x00FF00)
+		else
+			player:hud_change(data.time, "number", 0xFF0000)
+			player:hud_change(data.mission, "number", 0xFF0000)
+		end
+	else
+		-- no missions running
+		player:hud_change(data.title, "text", "")
+		player:hud_change(data.mission, "text", "")
+		player:hud_change(data.time, "text", "")
+	end
+
+end
+

init.lua

@@ -6,6 +6,7 @@ missions = {
 }
 
 dofile(MP.."/functions.lua")
+dofile(MP.."/hud.lua")
 dofile(MP.."/missionblock.lua")
 dofile(MP.."/missionchest.lua")
 

missionblock.lua

@@ -218,4 +218,5 @@ minetest.register_node("missions:missionblock", {
 		update_formspec(meta)
 	end
 
-})
+})
+