Add initial screen layout.

helloworld.kv

@@ -1,6 +0,0 @@
-
-#:include debug.kv
-
-<HelloWorld>:
-    DebugLabel:
-        text: 'hello world'

main.py

@@ -1,12 +1,14 @@
 from kivy.app import App
 from kivy.uix.floatlayout import FloatLayout
 
-class HelloWorld(FloatLayout):
+
+class StrategyGame(FloatLayout):
     pass
 
-class HelloWorldApp(App):
+
+class StrategyGameApp(App):
     def build(self):
-        return HelloWorld()
+        return StrategyGame()
 
 if __name__ == '__main__':
-    HelloWorldApp().run()
+    StrategyGameApp().run()

strategygame.kv

@@ -0,0 +1,18 @@
+
+#:include debug.kv
+
+<StrategyGame>:
+    BoxLayout:
+        orientation: 'horizontal'
+        DebugLabel:
+            text: 'Main map'
+            size_hint: .75, 1
+        BoxLayout:
+            orientation: 'vertical'
+            size_hint: .25, 1
+            DebugLabel:
+                text: 'status'
+                size_hint: 1, .66
+            DebugLabel:
+                text: 'mini-map'
+                size_hint: 1, .33