dMZX Forums: "Char 255" param options per world -> MegaZeux Feature Requests -> Tracker

NOTE This is also meant for increased compatibility for older MZX versions from DOS and it's games, and also in addition to wanting CHAR 255 while sacrificing the Custom Char Parameter function in future worlds, CHAR 0 should be left alone, It's treated as a SPECIAL CHARACTER... (duh!)
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This means that there should be two future options for the global menu before using the CHAR IDs dialog :

• set CHAR 255 to display the actual char, despite actual parameter, (Default from DOS MZX versions at least in version 2.55)
• set CHAR 255 to display selected char, (DEFAULT from current MZX versions)

I don't understand the request. Char ID 255 has always forced objects to display as their parameter since MegaZeux 1.x. Are you asking me to intentionally break compatibility with DOS worlds that use this feature?

From MegaZeux 2.51's source code, IDPUT.ASM:

label id_chars byte    ; Table of characters for each id, a 0 means
                       ; that the ID is based on the parameter.
                       ; 255 means the ID is exactly the parameter.

    ; Screen at DI, array offset in SI, id in AH, character in AL,
    ; parameter in DL, ES holds global data, DS holds local data.

    cmp al,0ffh
    je @@check_2

@@check_2:
    ;
    ; "char:=param" code in char byte ( FF )
    ;

    mov al,dl                     ; Yep, character is now parameter byte

I guess I was wrong. But I still pretty much want an option, Still, Before selecting CHAR IDs in MZX, there should be the option of using "CHAR 255 as Custom Char (Default)" or "Display CHAR 255 as is (Every Char except Custom Thing IDs)"... - Custom Things for example: CustomBlock, CustomBreak, CustomFloor, CustomPush, etc... Should be the ones with Custom Char Selection still intact no matter the selection, as they are IMPORTANT to Megazeux, so they should be compatible.