We doing global variables now

src/mouse.zig

@@ -1,9 +1,9 @@
 const sdl = @import("sdl");
 const key_store = @import("data/keystore.zig");
 
-buttons: key_store.KeyStore(@TypeOf(sdl.BUTTON_LEFT), 4, 0),
+buttons: key_store.KeyStore(@TypeOf(sdl.BUTTON_LEFT), 4, 0) = .{},
 
-x: f32,
-y: f32,
-dx: f32,
-dy: f32,
+x: f32 = 0,
+y: f32 = 0,
+dx: f32 = 0,
+dy: f32 = 0,