elseif and switch Support

[HzanRsxa2959]

If elseif support is added first, then switch support could be derived from that.
Otherwise switch support could be added using opcodes 0871 and 0872 (only support integers, though).
GTA3Script already has nested switch support using opcodes 0871 and 0872.

[MatiDragon-YT]

Maybe it is better with conditional jump opcodes

switch 0@
    case 1
        [...]
    end
    case "2"
        [...]
    end
    case Actor.IsDead()
        [...]
    case 0x4
        [...]
    end
    default
        [...]
    end
end

TO COMPILE AND DECOMPILE ⬇

:LABEL_1X // begin SWITH
XXXX: if
XXXX: 0@ == 1  // CASE 1
XXXX: jf @LABEL_2X
[...]
XXXX: goto @LABEL_7 // exit SWITH
:LABEL_2X
XXXX: if
XXXX: 0@ == "2"  // CASE 2
XXXX: jf @LABEL_3X
[...]
XXXX: goto @LABEL_7 // exit SWITH
:LABEL_3X
XXXX: if
XXXX: actor 0@ is_dead  // CASE 3
XXXX: jf @LABEL_5X
[...]
:LABEL_4X
XXXX: if
XXXX: 0@ == 0x4  // CASE 4
XXXX: jf @LABEL_5X
[...]
XXXX: goto @LABEL_7X // exit SWITH
:LABEL_5X
[...]          // DEFAULT
XXXX: goto @LABEL_7X
:LABEL_7X // end SWITH

[MatiDragon-YT]

The same I think could be applied to ELSE-IF

if 0@ == 1
    [...]
else if 0@ == "5"
    [...]
else
    [...]
end

TO COMPILE AND DECOMPILE ⬇

:LABEL_1X // begin ELSE-IF
XXXX: if
XXXX: 0@ == 1   // if
XXXX: jf @LABEL_2X
[...]
XXXX: goto @LABEL_4X // exit ELSE-IF
:LABEL_2X
XXXX: if
XXXX: 0@ == "5"   // else if
XXXX: jf @LABEL_3X
[...]
XXXX: goto @LABEL_4X // exit ELSE-IF
:LABEL_3X
[...]           // else
:LABEL_4X // end ELSE-IF

[XMDS]

Maybe it is better with conditional jump opcodes

switch 0@
    case 1
        [...]
    end
    case "2"
        [...]
    end
    case Actor.IsDead()
        [...]
    case 0x4
        [...]
    end
    default
        [...]
    end
end

TO COMPILE AND DECOMPILE ⬇

:LABEL_1X // begin SWITH
XXXX: if
XXXX: 0@ == 1  // CASE 1
XXXX: jf @LABEL_2X
[...]
XXXX: goto @LABEL_7 // exit SWITH
:LABEL_2X
XXXX: if
XXXX: 0@ == "2"  // CASE 2
XXXX: jf @LABEL_3X
[...]
XXXX: goto @LABEL_7 // exit SWITH
:LABEL_3X
XXXX: if
XXXX: actor 0@ is_dead  // CASE 3
XXXX: jf @LABEL_5X
[...]
:LABEL_4X
XXXX: if
XXXX: 0@ == 0x4  // CASE 4
XXXX: jf @LABEL_5X
[...]
XXXX: goto @LABEL_7X // exit SWITH
:LABEL_5X
[...]          // DEFAULT
XXXX: goto @LABEL_7X
:LABEL_7X // end SWITH

It is best for SA to give priority to 0871 and 0872.
Conditional opcodes need to be distinguished,
But the latter is more suitable for VC and 3. Because VC and 3 do not have these commands

[MatiDragon-YT]

0871 & 0872 could be used in the case that the SWITCH only contains INTERGERS and if it is also the same as the one with which it is compared.
You couldn't tell if one number is greater than another or something else :(

[wmysterio]

@MatiDragon-YT

0871 & 0872 could be used in the case that the SWITCH only contains INTERGERS and if it is also the same as the one with which it is compared.
You couldn't tell if one number is greater than another or something else :(

It looks more like "expressions (mapping)" than a classic "switch". However, design compatibility across all games would be a priority for me over a limited case jump table.

[MatiDragon-YT]

It looks more like "expressions (mapping)" than a classic "switch".

Exactly @wmysterio