game works as before without a few things

todo.txt

@@ -3,6 +3,8 @@ zephr stuff
 - border decorations for shapes (maybe. or maybe only for ui elements)
 - some kind of ui layout/hierarchy system (for later, when we actually need it)
 - texture func (draw_image? or draw_texture? func)
+- input handling (mouse, keyboard, gamepad?) with an event system
+    Watch youtu.be/watch?v=oheNg0k_WDc and related videos to get ideas for the keyboard and gamepad handling
 
 text rendering improvements
   - [ ] unicode support (allows for non-ascii characters)