Add basic helpers

Allows loading, saving, setting, and bringing player to spawnpoint.
Includes save and bring code on respawnplayer.

init.lua

@@ -10,3 +10,57 @@ function spawnpoint.log(content, log_type)
   if log_type == nil then log_type = "action" end
   minetest.log(log_type, "[HUD Plus] "..content)
 end
+
+----------------------
+-- HELPER FUNCTIONS --
+----------------------
+
+-- [function] Load
+function spawnpoint.load()
+  local res = io.open(path, "r")
+  if res then
+    spawnpoint.pos = minetest.string_to_pos(res)
+  end
+end
+
+-- [function] Save
+function spawnpoint.save()
+  io.open(path, "w"):write(minetest.pos_to_string(spawnpoint.pos))
+end
+
+-- [function] Set
+function spawnpoint.set(pos)
+  if type(pos) == "string" then
+    pos = minetest.string_to_pos(pos)
+  end
+
+  if type(pos) == "table" then
+    spawnpoint.pos = pos
+  end
+end
+
+-- [function] Bring
+function spawnpoint.bring(player)
+  if type(player) == "string" then
+    player = minetest.get_player_by_name(player)
+  end
+
+  if player then
+    local pos = spawnpoint.pos
+    player:setpos({x=pos.x, y=pos.y+0.5, z=pos.z})
+  end
+end
+
+-------------------
+---- CALLBACKS ----
+-------------------
+
+spawnpoint.load()
+
+-- [register] On Shutdown
+minetest.register_on_shutdown(spawnpoint.save)
+
+-- [register] On Respawn Player
+minetest.register_on_respawnplayer(function(player)
+  spawnpoint.bring(player)
+end)