#include "pitches.h"
  
int motor1Pin1 = 12; // pin 2 on L293D IC
int motor1Pin2 = 11; // pin 7 on L293D IC
int motor2Pin1 = 10; // pin 10 on L293D IC
int motor2Pin2 = 9; // pin 15 on L293D IC


int right = 5; //turet right
int left = 4; // turet left
int up = 3; //turet up down
int fire = 2; // fire
int state;

void setup() {
    // sets the pins as outputs:
    pinMode(motor1Pin1, OUTPUT);
    pinMode(motor1Pin2, OUTPUT);
    //pinMode(enable1Pin, OUTPUT);
    pinMode(motor2Pin1, OUTPUT);
    pinMode(motor2Pin2, OUTPUT);
   pinMode(up, OUTPUT);
   pinMode(fire, OUTPUT);
    pinMode(right, OUTPUT);
    pinMode(left, OUTPUT);   


    Serial.begin(9600);
}

void loop() {
    //if some date is sent, reads it and saves in state
    if(Serial.available() > 0){     
      state = Serial.read();   
    }  
    // forward
    if (state == 'w') {
        digitalWrite(motor1Pin1, HIGH);
        digitalWrite(motor1Pin2, LOW); 
        digitalWrite(motor2Pin1, LOW);
        digitalWrite(motor2Pin2, HIGH);
    }
       // left
    else if (state == 'e') {
        digitalWrite(motor1Pin1, HIGH); 
        digitalWrite(motor1Pin2, LOW); 
        digitalWrite(motor2Pin1, HIGH);
        digitalWrite(motor2Pin2, LOW);
    }
    // right
    else if (state == 'q') {
        digitalWrite(motor1Pin1, LOW); 
        digitalWrite(motor1Pin2, HIGH); 
        digitalWrite(motor2Pin1, LOW);
        digitalWrite(motor2Pin2, HIGH);
    }
    // up left
    else if (state == 'a') {
        digitalWrite(motor1Pin1, HIGH); 
        digitalWrite(motor1Pin2, LOW); 
        digitalWrite(motor2Pin1, LOW);
        digitalWrite(motor2Pin2, LOW);
    }
    // up right
    else if (state == 's') {
        digitalWrite(motor1Pin1, LOW); 
        digitalWrite(motor1Pin2, LOW); 
        digitalWrite(motor2Pin1, LOW);
        digitalWrite(motor2Pin2, HIGH);
    }
    // down left
    else if (state == 'z') {
        digitalWrite(motor1Pin1, LOW); 
        digitalWrite(motor1Pin2, HIGH); 
        digitalWrite(motor2Pin1, LOW);
        digitalWrite(motor2Pin2, LOW);
    }
    // down right
    else if (state == 'c') {
        digitalWrite(motor1Pin1, LOW); 
        digitalWrite(motor1Pin2, LOW); 
        digitalWrite(motor2Pin1, HIGH);
        digitalWrite(motor2Pin2, LOW);
    }
    // backward
    else if (state == 'd') {
      
        digitalWrite(motor1Pin1, LOW); 
        digitalWrite(motor1Pin2, HIGH);
        digitalWrite(motor2Pin1, HIGH);
        digitalWrite(motor2Pin2, LOW);
    }
  // turet right
    else if (state == 'o') {
        digitalWrite(right, HIGH); 
        digitalWrite(left, LOW);
    }
       // turet left
    else if (state == 'p') {
        digitalWrite(right, LOW); 
        digitalWrite(left, HIGH);
    }
       // turet up down
    else if (state == 'k') {
        digitalWrite(up, HIGH); 
    }
       // fire
    else if (state == 'f') {
        digitalWrite(fire, HIGH); 
    }
       //horn
    else if (state == 'h') {
    tone(13, NOTE_C4);
    }
  
     // Stop
    else  {
        digitalWrite(motor1Pin1, LOW); 
        digitalWrite(motor1Pin2, LOW); 
        digitalWrite(motor2Pin1, LOW);
        digitalWrite(motor2Pin2, LOW);
        digitalWrite(up, LOW);
        digitalWrite(fire, LOW);
        digitalWrite(right, LOW); 
        digitalWrite(left, LOW);
        noTone(13);
    }
delay(100);
}