From c53520aa314960855fc57bf09045c3f977557bb5 Mon Sep 17 00:00:00 2001
From: "jeanpatrick.guerrero@gmail.com" <jeanpatrick.guerrero@gmail.com>
Date: Sat, 4 Jul 2015 15:08:32 +0200
Subject: [PATCH] Fix attempt to start a world when no world is
 selected/created

---
 builtin/mainmenu/tab_singleplayer.lua | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/builtin/mainmenu/tab_singleplayer.lua b/builtin/mainmenu/tab_singleplayer.lua
index a7fa55666..4ae4dde35 100644
--- a/builtin/mainmenu/tab_singleplayer.lua
+++ b/builtin/mainmenu/tab_singleplayer.lua
@@ -152,12 +152,14 @@ local function main_button_handler(this, fields, name, tabdata)
 		world_doubleclick or
 		fields["key_enter"] then
 		local selected = core.get_textlist_index("sp_worlds")
+		gamedata.selected_world = menudata.worldlist:get_raw_index(selected)
 		
-		if selected ~= nil then
-			gamedata.selected_world = menudata.worldlist:get_raw_index(selected)
-			gamedata.singleplayer   = true
-			
+		if selected ~= nil and gamedata.selected_world ~= 0 then
+			gamedata.singleplayer = true
 			core.start()
+		else
+			gamedata.errormessage =
+				fgettext("No world created or selected!")
 		end
 		return true
 	end
-- 
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