Sonic and the 6 Chaos Emeralds

[differentialgiraffe]

Hello.

I am proud to announce a new game only for the 48k, and for the 128k.

It contains 17 screens, but I will fix bugs later and make a 128K version with loading screen, music, and major improvements, as well as creating a new MPAGD Project to improve.

Check it out here:

gudatsch-new.itch.io/sonic-zx

[mas]

Jul 10, 2024 16:58:42 GMT differentialgiraffe said:

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Hello.

I am proud to announce a new game only for the 48k, and for the 128k.

It contains 17 screens, but I will fix bugs later and make a 128K version with loading screen, music, and major improvements, as well as creating a new MPAGD Project to improve.

Check it out here:

gudatsch-new.itch.io/sonic-zx

It's looking good so far; it definitely has the gamegear / master system feel of Sonic to it, which is nice as those were the versions I played a lot more of. 

For the "jumping up into a new screen" bits you might want to trigger the screen up a little earlier than the usual TOPEDGE - I think I usually have a bit in the player event that looks like:

;; I'll assume I know what topedge is meant to be - on a full screen it would be 0

;; I will trigger screen move just before the topedge

IF 4 > Y

 IF CANGOUP

  SCREENUP

  LET Y = BOTTOMEDGE

  SUBTRACT 8 FROM Y

 ENDIF

ENDIF

You will have to use a platform block the other side (the sprite should be able to pass through the platform block from below, but will stand on top)

It looks like a couple of the underground screens are mis-aligned (so you walk left or right off screen and start the next one stuck in a wallblock) but that's an easy fix.

You might want to record the entry point for the player on each screen entry so you respawn in that place when a life is lost.

(Basically you have 3 variables used to store player X, Y and one to trigger the code to store those. e.g.

in the gameinit event

A = 0 ; trigger for saving player X/Y, 0 = saved, 1 = need to save, 2 = reset to saved

B = 0 ; default for saving player X spawn point

C = 0 ; default for saving player Y spawn point

in the playerevent

IF A = 1      ; new screen, save player position

 LET B = X

 LET C = Y

 LET A = 0

ENDIF

IF A = 2    ; player died, put player back where they entered

 LET X = B

 LET Y = C

 LET A = 0

ENDIF

then when you have a SCREENLEFT/RIGHT/UP/DOWN you add

LET A = 1 ; record new X Y entrypoint

then, in the KILLPLAYER event, you can add after any routine to decrement lives,

LET A = 2 ; player deaded, respawn at previous X Y entry point

(I think I got that code or a version of it from minilop's tutorials which are excellent if you haven't seen them -> www.minilopretro.com/blog/categories/mpagd-beginners-guide )

Good luck with the rest of it!

M.