C :: Using RA2 As Both Input And Interrupt

I brought some code from a PICDEM DV lab example into a simple program I'd written. The example showed how to use the external interrupt on the PIC16F690 to switch directions in a function.

I've been trying to use that RA2 pin as both the input (start) trigger for one of my functions and as an interrupt to get out of that function, too. So far the interrupt doesn't work, but the function trigger does. Should I use two pushbuttons or add a random timer to the for() loop to execute the function to roll the dice?

Trying to incorporate that example code also seems to have messed up the little random counter [a for() loop] that I used. The dice pattern was reliably random before adding this new stuff, and now I can clearly see repetition.

I'm only just starting a MC class.

Code:
#pragma config FOSC = INTRCIO // Oscillator Selection bit
#pragma config WDTE = OFF // Watchdog Timer Enable bit
#pragma config PWRTE = OFF // Power-up Timer Enable bit

[Code].....