///////////////////////////////////////////////////////////////////////////////
// Circuit Playground D6 Dice
// 
// Roll them bones.
//
// Author: Carter Nelson
// MIT License (https://opensource.org/licenses/MIT)

#include <Adafruit_CircuitPlayground.h>

#define ROLL_THRESHOLD      30          // Total acceleration threshold for roll detect
#define TAP_THRESHOLD       10          // Tap detect threshold
#define DICE_COLOR          0xEA6292    // Dice digits color

unsigned long rollStartTime;
bool rolling;
bool newRoll;
bool tapDetected;
uint8_t rollNumber;
float X, Y, Z, totalAccel;

uint8_t dicePixels[6][6] = {  // Pixel pattern for dice roll
  { 2, 0, 0, 0, 0, 0 } ,      // Roll = 1
  { 4, 9, 0, 0, 0, 0 } ,      //        2
  { 0, 4, 7, 0, 0, 0 } ,      //        3
  { 1, 3, 6, 8, 0, 0 } ,      //        4
  { 0, 2, 4, 5, 9, 0 } ,      //        5
  { 0, 2, 4, 5, 7, 9 } ,      //        6
};

///////////////////////////////////////////////////////////////////////////////
void tapCallback() {
  tapDetected = true;
}

///////////////////////////////////////////////////////////////////////////////
void setup() {
  Serial.begin(9600);
  
  CircuitPlayground.begin();
  CircuitPlayground.setBrightness(100);
  CircuitPlayground.setAccelRange(LIS3DH_RANGE_8_G);
  CircuitPlayground.setAccelTap(2, TAP_THRESHOLD);
  
  // Setup tap detection and callback function
  attachInterrupt(digitalPinToInterrupt(7), tapCallback, RISING);
  
  // Seed the random function with light sensor value
  randomSeed(CircuitPlayground.lightSensor());

  // Initialize the global states
  newRoll = false;
  rolling = false;
  tapDetected = false;
}

///////////////////////////////////////////////////////////////////////////////
void loop() {
  // Compute total acceleration
  X = 0;
  Y = 0;
  Z = 0;
  for (int i=0; i<10; i++) {
    X += CircuitPlayground.motionX();
    Y += CircuitPlayground.motionY();
    Z += CircuitPlayground.motionZ();
    delay(1);
  }
  X /= 10;
  Y /= 10;
  Z /= 10;

  totalAccel = sqrt(X*X + Y*Y + Z*Z);
  
  // Check for rolling
  if ((totalAccel > ROLL_THRESHOLD) || tapDetected) {
    rollStartTime = millis();
    newRoll = true;
    rolling = true;
    tapDetected = false;
  }
  
  // Rolling momentum
  // Keep rolling for a period of time even after shaking has stopped.
  if (newRoll) {
    if (millis() - rollStartTime > 1000) rolling = false;
  }

  // Compute a random number from 1 to 6
  rollNumber = random(1,7);

  // Display status on NeoPixels
  if (rolling) {
    // Make some noise and show the dice roll number
    CircuitPlayground.playTone(random(400,2000), 20, false);        
    CircuitPlayground.clearPixels();
    for (int p=0; p<rollNumber; p++) {
      CircuitPlayground.setPixelColor(dicePixels[rollNumber-1][p], DICE_COLOR);
    }    
    delay(20);    
  } else if (newRoll) {
    // Show the dice roll number
    newRoll = false;
    CircuitPlayground.clearPixels();
    for (int p=0; p<rollNumber; p++) {
      CircuitPlayground.setPixelColor(dicePixels[rollNumber-1][p], DICE_COLOR);
    }
  }
}

///////////////////////////////////////////////////////////////////////////////
// Circuit Playground D6 Dice
// 
// Roll them bones.
//
// Author: Carter Nelson
// MIT License (https://opensource.org/licenses/MIT)

#include <Adafruit_CircuitPlayground.h>

#define ROLL_THRESHOLD      30          // Total acceleration threshold for roll detect
#define TAP_THRESHOLD       10          // Tap detect threshold
#define DICE_COLOR          0xEA6292    // Dice digits color

unsigned long rollStartTime;
bool rolling;
bool newRoll;
bool tapDetected;
uint8_t rollNumber;
float X, Y, Z, totalAccel;

uint8_t dicePixels[6][6] = {  // Pixel pattern for dice roll
  { 2, 0, 0, 0, 0, 0 } ,      // Roll = 1
  { 4, 9, 0, 0, 0, 0 } ,      //        2
  { 0, 4, 7, 0, 0, 0 } ,      //        3
  { 1, 3, 6, 8, 0, 0 } ,      //        4
  { 0, 2, 4, 5, 9, 0 } ,      //        5
  { 0, 2, 4, 5, 7, 9 } ,      //        6
};

///////////////////////////////////////////////////////////////////////////////
void tapCallback() {
  tapDetected = true;
}

///////////////////////////////////////////////////////////////////////////////
void setup() {
  Serial.begin(9600);
  
  CircuitPlayground.begin();
  CircuitPlayground.setBrightness(100);
  CircuitPlayground.setAccelRange(LIS3DH_RANGE_8_G);
  CircuitPlayground.setAccelTap(2, TAP_THRESHOLD);
  
  // Setup tap detection and callback function
  attachInterrupt(digitalPinToInterrupt(7), tapCallback, RISING);
  
  // Seed the random function with light sensor value
  randomSeed(CircuitPlayground.lightSensor());

  // Initialize the global states
  newRoll = false;
  rolling = false;
  tapDetected = false;
}

///////////////////////////////////////////////////////////////////////////////
void loop() {
  // Compute total acceleration
  X = 0;
  Y = 0;
  Z = 0;
  for (int i=0; i<10; i++) {
    X += CircuitPlayground.motionX();
    Y += CircuitPlayground.motionY();
    Z += CircuitPlayground.motionZ();
    delay(1);
  }
  X /= 10;
  Y /= 10;
  Z /= 10;

  totalAccel = sqrt(X*X + Y*Y + Z*Z);
  
  // Check for rolling
  if ((totalAccel > ROLL_THRESHOLD) || tapDetected) {
    rollStartTime = millis();
    newRoll = true;
    rolling = true;
    tapDetected = false;
  }
  
  // Rolling momentum
  // Keep rolling for a period of time even after shaking has stopped.
  if (newRoll) {
    if (millis() - rollStartTime > 1000) rolling = false;
  }

  // Compute a random number from 1 to 6
  rollNumber = random(1,7);

  // Display status on NeoPixels
  if (rolling) {
    // Make some noise and show the dice roll number
    CircuitPlayground.playTone(random(400,2000), 20, false);        
    CircuitPlayground.clearPixels();
    for (int p=0; p<rollNumber; p++) {
      CircuitPlayground.setPixelColor(dicePixels[rollNumber-1][p], DICE_COLOR);
    }    
    delay(20);    
  } else if (newRoll) {
    // Show the dice roll number
    newRoll = false;
    CircuitPlayground.clearPixels();
    for (int p=0; p<rollNumber; p++) {
      CircuitPlayground.setPixelColor(dicePixels[rollNumber-1][p], DICE_COLOR);
    }
  }
}