int pin1= 13;
int pin2 = 12;
int pin3 = 11;
int pin4 = 10;
int pin5 = 9;
int pin6 = 8;
int pin7 = 7;
int pin8 = 6;
int pin9 = 5;
int pin10 = 4;
int lightCycle = 0;
int timesToRepeat = 5;
int timeDelay = 1000;
int modeLimit = 4;
void setup(){
pinMode(pin1,OUTPUT);
pinMode(pin2,OUTPUT);
pinMode(pin3,OUTPUT);
pinMode(pin4,OUTPUT);
pinMode(pin5,OUTPUT);
pinMode(pin6,OUTPUT);
pinMode(pin7,OUTPUT);
pinMode(pin8,OUTPUT);
pinMode(pin9,OUTPUT);
pinMode(pin10,OUTPUT);
}

void loop(){
if(lightCycle > modeLimit){
lightCycle = 0;
}
switch(lightCycle){
case 0:
LightFlash();
break;
case 1:
LightTravel();
break;
case 2:
NightRider();
break;
case 3:
PassBy();
break;
}
lightCycle++;
}
//Lights from both sides will pass by each other.
void PassBy(){
for(int i = 0; i < timesToRepeat; i++){
int positiveMovement = 0;
int negativeMovement = 13;
for(int z = 4; z <= 13; z++){
digitalWrite(positiveMovement, HIGH);
digitalWrite(negativeMovement, HIGH);
delay(timeDelay);
digitalWrite(positiveMovement, LOW);
digitalWrite(negativeMovement, LOW);
}
}
}
//Lights scroll left and right.
void NightRider(){
for(int i = 0; i < timesToRepeat; i++){
for(int z = 4; z <= 13; z++){
digitalWrite(z, HIGH);
delay(timeDelay);
digitalWrite(z, LOW);
}
for(int z = 13; z >= 4; z--){
digitalWrite(z, HIGH);
delay(timeDelay);
digitalWrite(z, LOW);
}
}
}

//All lights flash on and off.
void LightFlash(){
for(int i = 0; i < timesToRepeat; i++){
for(int z = 0; z < 2; z++){
delay(timeDelay);
switch(z){
case 0:
digitalWrite(pin1, HIGH);
digitalWrite(pin2, HIGH);
digitalWrite(pin3, HIGH);
digitalWrite(pin4, HIGH);
digitalWrite(pin5, HIGH);
digitalWrite(pin6, HIGH);
digitalWrite(pin7, HIGH);
digitalWrite(pin8, HIGH);
digitalWrite(pin9, HIGH);
digitalWrite(pin10, HIGH);
break;
case 1:
digitalWrite(pin1, LOW);
digitalWrite(pin2, LOW);
digitalWrite(pin3, LOW);
digitalWrite(pin4, LOW);
digitalWrite(pin5, LOW);
digitalWrite(pin6, LOW);
digitalWrite(pin7, LOW);
digitalWrite(pin8, LOW);
digitalWrite(pin9, LOW);
digitalWrite(pin10, LOW);
break;
}
}
}
}
//Lights look like they're moving.
void LightTravel(){
for(int i = 0; i < timesToRepeat; i++){
for(int z = 0; z < 2; z++){
delay(timeDelay);
switch(z){
case 0:
digitalWrite(pin1, HIGH);
digitalWrite(pin2, LOW);
digitalWrite(pin3, HIGH);
digitalWrite(pin4, LOW);
digitalWrite(pin5, HIGH);
digitalWrite(pin6, LOW);
digitalWrite(pin7, HIGH);
digitalWrite(pin8, LOW);
digitalWrite(pin9, HIGH);
digitalWrite(pin10, LOW);
break;
case 1:
digitalWrite(pin1, LOW);
digitalWrite(pin2, HIGH);
digitalWrite(pin3, LOW);
digitalWrite(pin4, HIGH);
digitalWrite(pin5, LOW);
digitalWrite(pin6, HIGH);
digitalWrite(pin7, LOW);
digitalWrite(pin8, HIGH);
digitalWrite(pin9, LOW);
digitalWrite(pin10, HIGH);
break;
}
}
}
}