/*
int led = 13;
void setup(){
	pinMode(led, OUTPUT);
  	Serial.begin(9600);
}
void loop(){
	digitalWrite(led,HIGH);
  	delay(1000);
  	digitalWrite(led,LOW);
  	delay (1000);
}
*/
#include <Servo.h>
Servo myservo;  // create servo object to control a servo
int pos = 0;    // variable to store the servo position
int led = 13;                // the pin that the LED is atteched to
int sensor = 2;              // the pin that the sensor is atteched to
int state = LOW;             // by default, no motion detected
int val = 0;
int j = 0;
// variable to store the sensor status (value)
int sound = 12;

void setup() {
  myservo.attach(3);  // attaches the servo on pin 9 to the servo object
  pinMode(led, OUTPUT);      // initalize LED as an output
  pinMode(sensor, INPUT);    // initialize sensor as an input
  Serial.begin(9600);        // initialize serial
  myservo.write(0);
}
void phrase1() {
    
    int k = random(1000,2000);
    digitalWrite(led, HIGH);
    for (int i = 0; i <=  random(100,2000); i++){
        myservo.write(pos); 
        pos=+90;
        tone(sound, k+(-i*2));          
        delay(random(.9,2));             
    } 
    digitalWrite(led, LOW);   
    for (int i = 0; i <= random(100,1000); i++){
        myservo.write(pos); 
        pos=+90;
        tone(sound, k + (i * 10));          
        delay(random(.9,2));             
    } 
}

void phrase2() {
    
    int k = random(1000,2000);
    digitalWrite(led, HIGH);  
    for (int i = 0; i <= random(100,2000); i++){
        myservo.write(pos); 
        pos=-90;             // tell servo to go to position in variable 'pos'
        //delay(15);
        tone(sound, k+(i*2));          
        delay(random(.9,2));             
    } 
    digitalWrite(led, LOW);   
    for (int i = 0; i <= random(100,1000); i++){
        myservo.write(pos); 
        pos=-90;             // tell servo to go to position in variable 'pos'
        //delay(15);
        tone(sound, k + (-i * 10));          
        delay(random(.9,2));             
    } 
}

void sweep() {
  for (pos = 0; pos <= 180; pos += 1) { // goes from 0 degrees to 180 degrees
    // in steps of 1 degree
    myservo.write(pos);              // tell servo to go to position in variable 'pos'
    delay(15);                       // waits 15ms for the servo to reach the position
  }
  for (pos = 180; pos >= 0; pos -= 1) { // goes from 180 degrees to 0 degrees
    myservo.write(pos);              // tell servo to go to position in variable 'pos'
    delay(15);                       // waits 15ms for the servo to reach the position
  }
}

void loop(){
  val = digitalRead(sensor);   // read sensor value
  if (val == HIGH) {  
    j++; 
    if (j % 2 == 0){  
    	phrase1();
    	Serial.println("Par");
      delay(100);                // delay 100 milliseconds 
    }else{
      phrase2();
      Serial.println("Impar");
      delay(100);
    }
    if (state == LOW) {
      Serial.println("Motion detected!"); 
      state = HIGH;       // update variable state to HIGH
      
    }
  } 
  else {
      digitalWrite(led, LOW); // turn LED OFF
      delay(200);             // delay 200 milliseconds 
      
      if (state == HIGH){
        Serial.println("Motion stopped!");
        state = LOW; // update variable state to LOW
        noTone(sound);
        
    }
  }
}