Interceptor Demo update 2020-11-01

Update-2020-11-01:

• Compiled with GBDK-2020 version 4.0, should run smoother, annoy debug emulators less, use less space within the ROM file, etc.
• Added text to the title screen stating that it is a demo build.
• Rewrote pause code so that it no longer maxes out the CPU while paused.
• Added placeholder splash screens to levels that don't have ones made.
• Added new splash screen that appears before title screen.
• Implemented Super Game Boy Enhanced and Game Boy Color modes.
  • Fading transition screens had to be disabled for Game Boy Color mode, will implement a GBC friendly transition screen in a future update.
  • Colors will be tweaked over time for improved visibility and contrast.
• Updated player ship sprite to be more visually in-line with other ships.
• Set a second palette for bullets to allow white to be used, making them more visible in all modes.
• Added additional bullet sprites and sound effects for enemy ships for some variety.
  • New bullet sprites should also be more visible against background.
• Slowed rate of fire on player ship very slightly.
• Fixed minor bug that was causing level intro screen to scroll down one pixel and display garbage data along the top row.
• Fixed a bug where sprites would not reset their position for the next level after the victory animation if the player presses start to skip it.
• While implementing color, I discovered why my game didn't run properly on My OldBoy, the GBC emulator for Android. This has been resolved and it should now run under most, if not all, emulators. However, I cannot guarantee this will run on all emulators as I do not have the time to test all of them.