what do int+str give if its work?

11-01-2005, 12:53 PM	#1
Sysiu	I am reading a map. And I find this funny function which work actually. Code: function funny takes integer i, integer j returns string local string s = I2S(i - j - 'O000') // its O zero zero zero return s endfunction I've simplfiy the function. However, there may be some tricks that I missed since I've failed to try it myself. How does it work?

11-02-2005, 09:43 AM

Earth-Fury

Code:

takes integer i, integer j returns string
//This line is what defines what the function "takes", i and j are 2 integers passed throgh the function
//eg: funnyfunctionn(1, 2)

  local string  s = I2S(i - j - 'O000') // its O zero zero zero
//s is a local string variable. I2S converts and integer to a string, because doing something like this:
//local string s = i - j - 0000
//Wont work, because you are mixing 2 data types.

    return s
//Return the variable so it may be used, eg:
//local string a = funnyfunction(3, 4)

now, i dont really understand the point of this function, but thats what it doas... it takes 2 integers, and returns a string.

11-03-2005, 01:47 PM

Sysiu

JASS:

function I2Sp takes integer i, integer iLen returns string
  local string s = I2S(i)
  loop
    exitwhen StringLength(s) &gt;= iLen
    set s = "0" + s
  endloop
  return s
endfunction

function Checksum takes integer X1, integer X2, integer X3, integer Y1, integer X4, integer Y2, integer Z5 returns string
  local string  s = I2Sp(X1 + (X2 - X3 - 'O000') + X4*X4 + RedDiv(Z5, 1000), 4)
  local integer i = IMinBJ(Y1, 3)
  set Y2 = Y2 + 1
  loop
    exitwhen i == 3
    set s = SubString(s, 1, 4) + SubString(s, 0, 1)
    set i = i + 1
  endloop
  set i = S2I(s)
  if i &gt; 5999 then
    return I2Sp(i - Y2*(1+ModuloInteger(Z5, 1000)), 4)
  else
    return I2Sp(i + Y2*(1+ModuloInteger(Z5, 1000)), 4)
  endif
endfunction

X1 = 261
X2 = 2
X3 = 0
X4 = 2
Y1 = 2
Y2 = 2
Z5 = 17444
Checksum return = 4175
That's all.
Nothing special, except the "integer + string" action.

11-03-2005, 01:48 PM	#4
Sysiu	My question is : How do the war3 machine subtract string and integer ? Will it read them as hex and do it? or, how do it work with them? I can only imagine the adding up of string but not a subtraction...

11-03-2005, 02:26 PM	#5
iNfraNe	something between ' and ' isnt a string, but an integer, just look @ unit id's, those are integers 2 just check out what they are by displaying I2S('O000')

11-03-2005, 03:11 PM	#6
Sysiu	ah! Then, I think its a handle. A unit type is called O000

11-04-2005, 08:20 AM

Sysiu

ops finally I've found it out.
THe machine just read 'O000' string into memory, and then do calculation as hex "4F30 3030" with other integer.

argh... what a stupid...thing in ' ' aren't really a hex or string or handle.
If you display it directly, system will hang once you click the map in creating room.
If you display (o + ' '), it will become integer.
If you treat it like string, it will become string......