This was my first ASM hack. It is an air meter that is a new "counter" on the status bar. It is highly adjustable for tile mapping and sound effects. It requires 5 bytes of free RAM.
Added SA-1 compatibility, optimized the code and fixed an issue that would break the score/star counter because the A value and X index weren't being restored properly. Despite this being far less advanced than GHB's one, it is a good alternative.
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