If you're letting players change arbitrary tiles to arbitrary tiles, like moving characters around the screen as tiles as in Fire Emblem, there's no simple way to preserve them across screen changes.
When you load the original screen back in it'll load in all the default collisions for that screen, so you'd have to have saved all the changes, ie tile X/Y and what type it changed to, into RAM somewhere, then reload them all before the screen turns on. There's no standard NES Maker thing to do that, you'd have to write it yourself.
Just had an idea reading that! (it makes things maybe slightly not optimal but it should still WORK in theory). My player cursor moves tile by tile already by just updating x & y via input scripts... maybe I should start the cursor that (if multiplayer no CPUs will currently made in demo but will later) will change who controls it via their turn.
BUT The main thing about the cursor is that depending on how many times it moves left, right, up, or down I'll set a X vartiable and Y variable in RAM that ADC's or SBC's
in the input scripts EX: MoveCursorDown ADC's the Y variable. THEN when moving a unit tile it'll have to save the currentCursorXY Vars to a specificUnit XY Vars and bata-boom
again in theory change these tiles with the power of POSTSCREENLOAD and your saved vars then your done! you might be concerned with two things though
1. that limits How many units you can move because of how many of the variables you can fit and if you want to duplicate the same unit you can't with this idea!
Answer: 4 Units per Side no duplicates and same applies to even in-story levels (trust me it sounds lame but there are gameplay reasons for that to tech ones just a gameplay idea that changes this from FE the most)
2. Then how are you going to handle scrolling?
Answer: No Clue yet LMAO worse comes to worse I won't have enough space 512 whateverbyte-wise to fit eventual solution to that and the scrolling itself
but for now there is no scrolling and because of that in the muliplayer alpha demo there can only be a 1v1 match instead of say potential future 2v2 or free for all.
GRANTED YES I KNOW NESMAKER DOESN'T IMMEADITLY LET YOU USE THE FOUR SCORE PLAYER METHOD BUT THIS MIGHT BE LATER TOO IDK! and the main reason you need
scrolling for a free for all or 2v2 is due to more space to move units and have some distance to move around.
but yeah this idea SHOULD work for the alpha demo but I won't have time to code that today due to me having appointments multiple places today.
so tomorrow is when I'll try this. again if i missed anything from anyone's perspective let me know alright? K talk to all yall later. PEACE!
