Counter for Arduino when pressing a Button

fast_clicker_for_microview

#include <MicroView.h>		// include MicroView library

int buttonPin = A0;     	// push button pin
int buttonState = 0;		// variable to store the pushbutton status
int counter = 0;                // counts the number of clicks
int current = 0;                // holds the current state
int ticks = 0;                  // cycle counter
int current_ticks = 0;          // Last ticks when the button was released
int doubleclick_max = 50;       // topmost double click, if you can't do better call someone younger :P
int difference = 0;             // Your record in double click

void setup() {
	uView.begin();			// start MicroView
	uView.clear(PAGE);		// clear page
	
	pinMode(buttonPin, INPUT);  	// initialize the pushbutton pin as an input
	digitalWrite(buttonPin,HIGH);  	// set Internal pull-up
}

void loop() {
	buttonState = digitalRead(buttonPin);	// read the state of the pushbutton value

	// check if the pushbutton is pressed.
	// if it is not pressed, the buttonState is HIGH:
	if (buttonState == HIGH) {
                if (current != buttonState) {
                  //Identifies when you released the button
                  if (ticks - current_ticks < doubleclick_max) {
                    // You will be marked as fast click
                    counter = 0;
                    difference = ticks - current_ticks;
                    if (difference != 0 && difference < doubleclick_max) {
                      //With this fast multiprocessor you should have played so much if you manage to reach 0 ;)
                      doubleclick_max = difference;
                    }
                  }
                  else {
                    counter = counter + 1;
                  }
                  current_ticks = ticks;
                }  
		uView.circle(31, 23, 10);
		uView.circleFill(31, 23, 9, BLACK, PAGE);
		uView.circle(31, 23, 5);
		uView.circleFill(31, 23, 4, BLACK, PAGE);
                uView.display();
 	} 
	else {
                // Let's show some reaction, why don't you play when you feel bored?
		uView.circleFill(31, 23, 10, WHITE, PAGE);
                uView.circleFill(31, 23, 4, BLACK, PAGE);
		uView.display();
        }
        current = buttonState;
        uView.setCursor(0, 0);
        uView.print("    ");
        uView.setCursor(0, 0);
        uView.print(counter);
        ticks = ticks + 1;
        if (difference != 0) {
          // Show off you can bang the most of all.
          uView.setCursor(50, 23);
          uView.print("    ");
          uView.setCursor(50, 23);
          uView.print(doubleclick_max);
        }
        uView.setCursor(0, 40);
        uView.print("FstClickr");
        
}