[SOLVED] Sprite 0 hit test for split screen

Hello,

I'm programming a small NES game, and I want to add a status bar to it, to display the score, etc. Without using tons of sprites. I'm using the NROM mapper so I'm trying to wait for the sprite zero hit to split the screen, so I added this to my game, after reading many posts about it and reading the nerdy nights tutorials code:At start I placed it at the beginning of the NMI, or at the end but then I saw that I should put it after updating the graphics, so I put it after loading the sprites... I also tried waiting for the VBLANK... None of it works... On some attempts it just froze the game, on others it did nothing... I started writing NES games two years ago, some parts of the code are also two years old, I don't code NES games very often because I quickly get discouraged by issues with the PPU...

Can someone please help me to understand where this code should run and why?

Thanks a lot.
Mibi88

EDIT:

I'm saving in the zeropage, in one byte the state of my program, if I'm on the title screen, in game or on the game over screen. Just at the start of the NMI I'm loading the sprites with

Statistics: Posted by Mibi88 — Sat May 18, 2024 5:12 am — Replies 3 — Views 362

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