Halloween Arduino Slug: Arduino code for a motion-activated screaming pumpkin slug

HalloweenSlugOLantern.ino

#include <RBD_Timer.h>
#include <RBD_Light.h>
#include "SD.h"
#include "TMRpcm.h"
#include "SPI.h"

#define SD_ChipSelectPin 4


TMRpcm tmrpcm;
int redpin=3;      //Pin 10
int greenpin=5;    //Pin 11
int bluepin=6;      //Pin 12
int colorr = 0;
int colorg = 0;
int colorb = 0;
long flickerTime = 0;
int played = 0;
RBD::Light eye(10);
int pirPin = 7;

char *sounds[6] = {"slimer.wav", "growl.wav", "growl2.wav", "scream.wav", "scream2.wav", "scream3.wav"};

void setup(){
  // SOUND
  tmrpcm.speakerPin = 9;
  Serial.begin(9600);
  if (!SD.begin(SD_ChipSelectPin)) {
    Serial.println("SD fail");
  } 

  // MOTION SENSOR
  pinMode(pirPin, INPUT);

  // COLOR LED
  randomSeed(analogRead(0));
  tmrpcm.setVolume(6);  

  eye.fade(1000,6000,1000,2000);
}

void loop(){
  
  // DETECT MOTION
  if (digitalRead(pirPin)){
    // PLAY SOUND IF SOUND ISN'T PLAYING AND HASN'T ALREADY PLAYED
    if (!played && !tmrpcm.isPlaying()){
      tmrpcm.play(sounds[random(6)%6]); 
      played = 1;
    }

    // TURN LIGHT RED
    analogWrite(redpin, 255);
    analogWrite(greenpin, 0);
    analogWrite(bluepin, 0);
    
  } else {
    played = 0;

    // CANDLE FLICKER
    if (millis() >= flickerTime){
      flickerTime = millis() + random(600);
      colorr = random(128);
      colorg = random(255-colorr);
      colorb = random(20);
      
      analogWrite(redpin, 128+colorr);
      analogWrite(greenpin, colorg);
      analogWrite(bluepin, colorb);
    }
  }

  eye.update();

}