Quiz Show controller

/*
  Quiz Show buttons
  Emery Premeaux
  <a href="http://www.DIY-SciB.org
 
">http://www.DIY-SciB.org
 
</a>  This simple quiz show kit supports 6 buttons and LEDs.
  Buttons should be pulled high by resistors, and tied to A0-A6.
  LEDs are attached via resistors to digital pins 2 through 7.
 
  Default condition, all LEDs are light (It helps to know power is on ;)
  When a button is pressed, Three things happen:
    1: All LEDs are extinguished, and the winning LED is relit.
    2: A message is sent out the serial port. Use it to communicate with a PC game if you like.
    3: A 5 second timer locks out all other buttons. After the timer completes, the LEDs are reset and buttons
       are ready for input again.
 */
 
// Let's assign names
#define P1LED 2
#define P2LED 3
#define P3LED 4
#define P4LED 5
#define P5LED 6
#define P6LED 7
 
#define P1SW A0
#define P2SW A1
#define P3SW A2
#define P4SW A3
#define P5SW A4
#define P6SW A5
 
int P1, P2, P3, P4, P5, P6;
 
int WinDelay = 5000;
 
// the setup routine runs once when you press reset:
void setup() {                
  // initialize the digital pin as an output.
  pinMode(P1LED, OUTPUT);  
  pinMode(P2LED, OUTPUT);  
  pinMode(P3LED, OUTPUT);  
  pinMode(P4LED, OUTPUT);  
  pinMode(P5LED, OUTPUT);  
  pinMode(P6LED, OUTPUT);
 
  pinMode(P1SW, INPUT);
  pinMode(P2SW, INPUT);
  pinMode(P3SW, INPUT);
  pinMode(P4SW, INPUT);
  pinMode(P5SW, INPUT);
  pinMode(P6SW, INPUT);
 
  Serial.begin(9600);
}
 
// the loop routine runs over and over again forever:
void loop() {
 LEDsOn();
 P1 = digitalRead(P1SW);
 if(P1==0){
   Win(1);
 }
 P2 = digitalRead(P2SW);
 if(P2==0){
   Win(2);
 }
 P3 = digitalRead(P3SW);
 if(P3==0){
   Win(3);
 }
 P4 = digitalRead(P4SW);
 if(P4==0){
   Win(4);
 }
 P5 = digitalRead(P5SW);
 if(P5==0){
   Win(5);
 }
 P6 = digitalRead(P6SW);
 if(P6==0){
   Win(6);
 }
}
 
void Win(int Winner){
 switch (Winner){
   case 1:
     LEDsOff();
     digitalWrite(P1LED, HIGH);
     Serial.println("Player 1");
     delay(WinDelay);
     LEDsOn();
     break;
   case 2:
     LEDsOff();
     digitalWrite(P2LED, HIGH);
     Serial.println("Player 2");
     delay(WinDelay);
     LEDsOn();
     break;
   case 3:
     LEDsOff();
     digitalWrite(P3LED, HIGH);
     Serial.println("Player 3");
     delay(WinDelay);
     LEDsOn();
     break;
   case 4:
     LEDsOff();
     digitalWrite(P4LED, HIGH);
     Serial.println("Player 4");
     delay(WinDelay);
     LEDsOn();
     break;
   case 5:
     LEDsOff();
     digitalWrite(P5LED, HIGH);
     Serial.println("Player 5");
     delay(WinDelay);
     LEDsOn();
     break;
   case 6:
     LEDsOff();
     digitalWrite(P6LED, HIGH);
     Serial.println("Player 6");
     delay(WinDelay);
     LEDsOn();
     break;
 }
}
 
 
void LEDsOn (){
 digitalWrite(P1LED, HIGH);
 digitalWrite(P2LED, HIGH);
 digitalWrite(P3LED, HIGH);
 digitalWrite(P4LED, HIGH);
 digitalWrite(P5LED, HIGH);
 digitalWrite(P6LED, HIGH);
 }
 
 void LEDsOff (){
 digitalWrite(P1LED, LOW);
 digitalWrite(P2LED, LOW);
 digitalWrite(P3LED, LOW);
 digitalWrite(P4LED, LOW);
 digitalWrite(P5LED, LOW);
 digitalWrite(P6LED, LOW);
 }