Too Close Warning of /make-warp

Addons/Guis/warp-system.lua

@@ -97,6 +97,8 @@ commands.add_command('make-warp', 'Make a warp point at your location', {'name',
     local position = game.player.position
     local name = args.name
     if _warps().warps[name] then player_return({'warp-system.name-used'},defines.text_color.med) return commands.error end
+    if position.x^2 + position.y^2 < 100 then player_return({'warp-system.too-close'},defines.text_color.med) return commands.error end
+    -- to do add a test for all warps
     make_warp_point(position,game.player.surface,game.player.force,name)
 end)
 

locale/en/warp-system.cfg

@@ -6,4 +6,5 @@ go-to-tooltip=Go To
 cooldown=You must wait for the cooldown. Time left: __1__
 cooldown-zero=Your cooldown has expired, You can use warp points again.
 name-used=That name is already taken.
+too-close=You are too close to an existing warp point to make a new one.
 not-on-warp=You are not on a warp point right now, you must be on a warp point to go to one.