Valid java code

This is a pretty stupid question but a equation example: (1 = 1) returns 1 or 0 right so why would this not work?:

	Code:
	int right = dir + 1 - 4(dir = 4); int left = dir - 1 + 4(dir = 0);

This code calculates right and left dir so i can use after this the code:

	Code:
	public static int[][] offsets = { { 1, 0 }, { 0, -1 }, { -1, 0 }, { 0, 1 } }; int nx = x + offsets[dir][0]; int ny = y + offsets[dir][1]; int nxr = x + offsets[right][0]; int nyr = y + offsets[right][1]; int nxl = x + offsets[left][0]; int nyl = y + offsets[left][1];

if I use the first code, it says [code]";" expected[code]
why does he ask that

= is assignment
== is comparison
It's really a bad idea to assign to a variable which is used in the same statement again. You can never know which part of the statement is executed first.
But you actually wanna use modulo (%) for this task.

wicherh wrote:

This is a pretty stupid question but a equation example: (1 = 1) returns 1 or 0 right so why would this not work?:

	Code:
	int right = dir + 1 - 4(dir = 4); int left = dir - 1 + 4(dir = 0);

Not sure what that code is supposed to do, but it's definitely invalid as long as there is no operator in front of the parentheses. Also, what tog said.

Yea got right code now with modulo.
If you are at a if statement there stays example

	Code:
	if (x = 1) { }

X =1 returns a value boolean true or false, 1 or 0.
int right = dir + 1 - 4(dir = 4); means:

int right = dir + 1 - 4 * (if dir = 4(if = true it returns a 1 value)) then the equanation does it -3