prompt to save

rsrc/dialogs/save-before-launch.xml

@@ -0,0 +1,11 @@
+<?xml version='1.0' encoding='UTF-8' standalone='no'?>
+<?xml-stylesheet href="dialog.xsl" type="text/xsl"?>
+<dialog defbtn='save'>
+	<button name='save' type='regular' top='43' left='240'>Save</button>
+	<button name='cancel' type='regular' def-key='esc' top='43' left='175'>Cancel</button>
+	<button name='revert' type='regular' top='43' left='109'>Don't</button>
+	<pict type='dlog' num='16' top='6' left='6'/>
+	<text top='6' left='49' width='256' height='32'>
+		Save changes to your scenario before launching it?
+	</text>
+</dialog>

src/scenedit/scen.main.cpp

@@ -100,7 +100,8 @@ void launch_scenario() {
 		return;
 	}
 
-	// TODO require save first?
+	// Prompt to save first
+	if(!save_check("save-before-launch")) return;
 
 	fs::path game_binary;
 #ifdef SFML_SYSTEM_MACOS