Syntax Error on fuction definition, please help

12-26-2006, 05:42 PM

Hi, well I made this function and it gives me syntax error on line 1:

JASS:

function RecipeMatch takes integer array recipe, integer array itOn returns boolean
    local boolean array used
    local boolean found
    local integer i
    
    set i = 1
    loop
        exitwhen i > 6
        set used[i] = false
        set i = i + 1
    endloop
    
    set i = 1
    loop
        exitwhen i > recipe[0]
        set found = false
        set j = 1
        loop
            exitwhen j > 6
            if (recipe[i] == itOn[j] and used[j] == false) then
                set used[j] == true
                set found = true
            endif
            set j = j + 1
        endloop
        if (found == false) then
            return false
        endif
        set i = i + 1
    endloop
    
    return true
endfunction

Is there any problem about passing arrays as parameters?

12-26-2006, 05:51 PM	#2
Fireeye	yes, you can not take arrays, you have to split up the array into several variables. (As much as i know) Also you didn't declare j as variable.

12-26-2006, 06:01 PM	#3
wyrmlord	JASS doesn't have any pointers. When a function takes values, the function you're passing the values from creates a copy of them and sends them to the new function (I think).

12-26-2006, 06:30 PM

The)TideHunter(

Quote:

Originally Posted by wyrmlord

JASS doesn't have any pointers. When a function takes values, the function you're passing the values from creates a copy of them and sends them to the new function (I think).

Jass does have pointers, depending on the variable. Integer, string, boolean and real when passed into a function are created as a copy, a handle when passed in is a pointer to it.

EDIT: And so solve your problem, you cannot use arrays as as function parameter

12-26-2006, 09:59 PM

PipeDream

Quote:

Jass does have pointers, depending on the variable. Integer, string, boolean and real when passed into a function are created as a copy, a handle when passed in is a pointer to it.

All values (handles are just values too!) are passed as copies-they're all just words. There's no special treatment-handles and strings, by virtue of being integers as far as the VM cares, do not have their contents copied.
I'm not really disagreeing with you, your statement just struck me as a confusing way to reason about JASS.

JASS doesn't have pointers in the sense that you have no 'address of' operation. Passing arrays doesn't need this, since you declare them as an object to begin with. We do have some hacks if you really need arrays, but for this application you can do fine with game cache or lists.

Actually since you're limited at 6, why not use dummy units to store the recipes? Fill its inventory with the recipe items, iterate through them and check if the triggering UnitHasItem().