How to: script Artificial Intelligence

[The Hari]

Code:

int ego(){

int xdistance = (self.x-target.x)*(2*(self.facing?1:0)-1);

int hitable = (target.y == 0 && target.state != 6 || target.state != 14);

How can i create more variables? When there is only one (int xdistance) everythings working, after add another one (int hitable), I'm getting this error:
Can't implicitly convert from 'bool' to 'int'.