Define constants

Use #define instead of const for constants.

src/packages/game/IZ_common.h

@@ -3,10 +3,9 @@
 
 #include <stdint.h>
 
-static const char* APP_NAME = "SDL2";
-
-static const uint8_t CONTROLS = 16;
+#define CONTROLS 16
+#define PLAYERS 1
 
-static const uint8_t PLAYERS = 1;
+static const char* APP_NAME = "SDL2";
 
 #endif