Can you make levels go higher than 2 screens vertically?

[kandowontu]

TOE/Clubstep need another screen up at least...Any ideas Zeph?

[zephyrside]

hmm, i have no idea how to do this one
unless we switch to mmc5 which supports swapping out the entire set of nametables

[kandowontu]

Gonna see if Alex is capable of such a feat

[zephyrside]

the whole level format is built around a height of 27 tiles
unless yall mangled my compression as well

[kandowontu]

The compression has been COMPLETELY redone lmao and it automatically packs the data into banks optimally by itself!

[zephyrside]

huh. neat

[ADM228]

ok so several concessions have to be made for this to work:

1. ground gets less special treatment:
   • ground tiles now have to be real metatiles in real collision map space
   • they have to be stored in not the neslib format cuz no more direct-to-VRAM shit
     • it has to be completely separate, which means we can use our own format BUT with the metatile nums XOR'd by #$80 (this would be real good i think)
   • BUT they still get decompressed only once and do not get overwritten
   • this simplifies NUMEROUS shits - rendering, collision, all that
2. loading seams (obv)
3. all this shit takes CPU time so ill make it toggleable

[kandowontu]

Works for me

[ADM228]

the progress can be tracked on the ExtCeiling branch on here btw
kando please add the ground metatiles if they're not already in there

[ADM228]

got the first "playable" build on there
stereomadness works almost (the ship segment's scrolling hasn't been compensated due to the numbers being A FUCKING MYSTERY to me) but test4 (the level with extended ceiling on) fucking breaks collision-wise

[ADM228]

also i introduced plethora of toggleable (!) illegal opcodes that speed things up if enabled

[ADM228]

The newest branch with it is now ExtCeiling-v1 (v0 is p much irrelevant now)

[ADM228]

holy shit it's been 2 months
ill be rewriting the changes over to a new branch starting probably later today

[ADM228]

it is now on branch extCeiling-v3

[ADM228]

Draw_screen_UD has been started
Only draws tiles in 1/16 of X positions
The other 15/16 are coming very soon
And attributes are coming soon
The parallax is coming eventually, maybe after i merge the first version of this as an improvement of sorts