#include <SoftwareSerial.h>
#define redLed 8
#define blueLed 7
#define greenLed 6
#define swordsLed 3
#define TX 0
#define RX 1
#define triggerValue 75
SoftwareSerial mySerial(RX,TX);
byte color=0;

void setup() {
  mySerial.begin(9600);
  pinMode(redLed,OUTPUT);
  pinMode(blueLed,OUTPUT);
  pinMode(greenLed,OUTPUT);
  digitalWrite(redLed,HIGH);
  digitalWrite(blueLed,HIGH);
  digitalWrite(greenLed,HIGH);
}

void loop() {
  byte sensorValue;
  if (mySerial.available()){
    sensorValue= mySerial.parseInt();
  }
  else {
    sensorValue =0;
  }
  if (sensorValue >= triggerValue){
    rgbControl();
  }
}

void rgbControl (){
  digitalWrite (swordsLed,HIGH);
  switch (color){
    case 0:     //blue color
    analogWrite(redLed,220);
    analogWrite(blueLed,100);
    analogWrite(greenLed,255);
    color++;
    break;
    case 1:   //red color
    analogWrite(redLed,100);
    analogWrite(blueLed,255);
    analogWrite(greenLed,255);
    color++;
    break;
    case 2:   //green color
    analogWrite(redLed,255);
    analogWrite(blueLed,255);
    analogWrite(greenLed,100);
    color++;
    break;
    case 3:   //yellow color
    analogWrite(redLed,70);
    analogWrite(blueLed,250);
    analogWrite(greenLed,150);
    color++;
    break;
    case 4:   //Turn off
    digitalWrite(redLed,HIGH);
    digitalWrite(blueLed,HIGH);
    digitalWrite(greenLed,HIGH);
    color=0;
    digitalWrite (swordsLed,LOW);
    break;
  }
}