Struct usage

Just declare struct values the way you declare variables/functions/arguments of normal types.

Once an struct is declared and you create it and you want to access it, you have to access its members, the way is often (struct value).(member name), in the case of pairs you use pair.x to access the x member and pair.y to access the y member.

Once a member is accessed the usage is quite similar to the usage of a variable. You can use it in set statements or as a value inside expressions.

struct pair
    integer x=1
    integer y=2
endstruct

function pair_sum takes pair A, pair B returns pair
    local pair C=pair.create()
    set C.x=A.x+B.x
    set C.y=A.y+B.y
    return C
endfunction

function testpairs takes nothing returns nothing
    local pair A=pair.create()
    local pair B=pair_sum(A, A)
    local pair C=pair_sum(A,B)

    call BJDebugMsg(I2S(C.x)+" : "+I2S(C.y))

    //Dont forget, if you are not using an struct instance anymore, you destroy it
    call B.destroy()
    call C.destroy()
    call pair.destroy(A)

endfunction

It would display 3 : 6;

Last modified: 16 October 2024