Gravity Simon Game

LED-Matrix Simon Game with orientation-control (accelerometer ADXL335) and integrated sound.

Oct 16, 2020

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audio

games

Components and supplies

Arduino Nano R3

Tactile Switch, Top Actuated

Resistor 475 ohm

Analog Accelerometer: ADXL335

Speaker, Piezo

LED Dot Matrix Display, Red

Resistor 10k ohm

Solderless Breadboard Full Size

Project description

Code

Gravity Simon Game Code

arduino

Setup and gameplay

1// GRAVITY SIMON GAME
2// This program will execute a remake version   of Simon Game controlled with an
3// accelerometer sensor and will display and   play sounds accordingly to the 
4// orientation of the sensor.
5
6// Created   October 16, 2020
7// by Policarpo Baquera
8// Carnegie Mellon University 
9//   More info at: https://create.arduino.cc/projecthub/plcrpbqr/gravity-simon-game-df5d00
10
11/*   //////////////////////////////////// ADXL335 SETUP ////////////////////////////////////   */
12#include "Arduino.h"
13#include <math.h>
14const byte pinX = A7;
15const   byte pinY = A6;
16const int xMinVal = 289; const int yMinVal = 279; //const int   zMinVal = 291;
17const int xMaxVal = 424; const int yMaxVal = 416; //const int   zMaxVal = 424;
18int angle = 0;
19
20/* ////////////////////////////////////////   BUTTON /////////////////////////////////////// */
21const byte pinButton = 13;
22
23/*   Struct to track and debounce the state of a push button switch */
24typedef struct   buttonTracker {
25  int  lastReading;       // last raw value read
26  long lastChangeTime;     // last time the raw value changed
27  byte pin;               // the pin this   is tracking changes on
28  byte buttonState;       // debounced state of the button
29}   butt;
30
31butt b;
32
33/* /////////////////////////////////////// SPEAKER ///////////////////////////////////////   */
34#include"pitches.h"
35const byte pinSpeaker = 10;
36const int SCALE[8]   = {NOTE_C3, NOTE_D3, NOTE_E3, NOTE_F3, NOTE_G3, NOTE_A3, NOTE_B3, NOTE_C4};
37const   int readyMelody[4]   = {NOTE_C3, NOTE_C3, NOTE_C3, NOTE_C4};
38const int correctMelody[2]   = {NOTE_B3, NOTE_C4};
39const int wrongMelody[4]   = {NOTE_D3, NOTE_CS3};
40
41/*   /////////////////////////////////////// DISPLAY ///////////////////////////////////////   */
42/* LED Matrix pin values */
43const byte pin01 = 6;
44const byte pin02 =   7;
45const byte pin03 = 8;
46const byte pin04 = 9;
47const byte pin05 = 2;
48const   byte pin06 = 3;
49const byte pin07 = 4;
50const byte pin08 = 5;
51const byte   pin09 = A0;
52const byte pin10 = A1;
53const byte pin11 = A2;
54const byte pin12   = A3;
55const byte pin13 = 12;
56const byte pin14 = 11;
57const byte pin15 =   A4;
58const byte pin16 = A5;
59
60/* Define cols and rows pin values for LED   Matrix */
61#define SIZE 8
62const byte COLS[8] = {pin05, pin02, pin07, pin01,   pin12, pin08, pin14, pin09};
63const byte ROWS[8] = {pin13, pin03, pin04, pin10,   pin06, pin11, pin15, pin16};
64      byte CROW    =  0;
65
66/* Struct for animation   frames */
67typedef struct {
68  byte *p;       // Hex Pattern
69  int t;         //   Animation time
70} pattern;
71
72/* Patterns */
73byte ARRp[8]     = {0x18,   0x3C, 0x7E, 0xDB, 0x18, 0x18, 0x18, 0x18};
74byte GOp[8]      = {0x00, 0x66, 0x99,   0xB9, 0x89, 0x99, 0x66, 0x00};
75byte THREEp[8]   = {0x00, 0x38, 0x04, 0x04, 0x38,   0x04, 0x38, 0x00};
76byte TWOp[8]     = {0x00, 0x3C, 0x10, 0x08, 0x04, 0x24, 0x18,   0x00};
77byte ONEp[8]     = {0x00, 0x08, 0x08, 0x08, 0x28, 0x18, 0x08, 0x00};
78byte   CORRECTp[8] = {0x00, 0x00, 0x10, 0x28, 0x44, 0x02, 0x00, 0x00};
79byte WRONGp[8]    = {0x00, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x00};
80byte C1p[8]      = {0xFF,   0xFF, 0xFF, 0x81, 0x81, 0x81, 0x81, 0xFF};
81byte D1p[8]      = {0xFF, 0x8F, 0x87,   0x83, 0x81, 0x81, 0x81, 0xFF};
82byte E1p[8]      = {0xFF, 0x87, 0x87, 0x87, 0x87,   0x87, 0x87, 0xFF};
83byte F1p[8]      = {0xFF, 0x81, 0x81, 0x81, 0x83, 0x87, 0x8F,   0xFF};
84byte G1p[8]      = {0xFF, 0x81, 0x81, 0x81, 0x81, 0xFF, 0xFF, 0xFF};
85byte   A1p[8]      = {0xFF, 0x81, 0x81, 0x81, 0xC1, 0xE1, 0xF1, 0xFF};
86byte B1p[8]      =   {0xFF, 0xE1, 0xE1, 0xE1, 0xE1, 0xE1, 0xE1, 0xFF};
87byte C2p[8]      = {0xFF, 0xF1,   0xE1, 0xC1, 0x81, 0x81, 0x81, 0xFF};
88
89/* Frames and animations */
90pattern   ARR1;        // ARROW 0.8s frame 
91pattern ARR2;        // ARROW 0.2s frame 
92pattern   ARR[2];      // ARROW 1.0s animation
93pattern GO;          // GO    1s frame
94pattern   THREE;       // THREE 1s frame 
95pattern TWO;         // TWO   1s frame 
96pattern   ONE;         // ONE   1s frame 
97pattern COUNT[4];    // COUNT 4s animation
98pattern   CORRECT;     // CORRECT 2s frame 
99pattern WRONG;       // WRONG   2s frame 
100pattern   noteC1;
101pattern noteD1;
102pattern noteE1;
103pattern noteF1;
104pattern noteG1;
105pattern   noteA1;
106pattern noteB1;
107pattern noteC2; 
108pattern NOTES[8];
109
110/* ////////////////////////////////////////   GAME ///////////////////////////////////////// */
111/* Game state */
112enum modes{introMode,   readyMode, melodyMode, gameMode, resultMode};
113enum modes state;
114byte currentMelody;
115int   currentNote;
116
117/* Game rounds */
118typedef struct{
119  byte *notes;
120   int *duration;
121  int len;
122} game;
123
124game game1;
125game game2;
126game   game3;
127game game4;
128game gameCollection[4];
129
130/* Game melodies */
131byte   notes1[4] = {   0,    0,    4,    2};
132int  durat1[4] = {1000, 1000, 1000, 1000};
133byte   notes2[5] = {   4,    1,    2,    5,    4};
134int  durat2[5] = {1500,  500, 1000,   1000, 2000};
135byte notes3[7] = {   1,    3,    1,    2,    0,    4,    7};
136int   durat3[7] = { 800,  800,  800,  800,  800,  800,  800};
137byte notes4[9] = {    0,    7,    6,    5,    4,    1,    2,    3,    4};
138int  durat4[9] = {1000,   1000, 1500,  500,  500,  500,  500,  500, 1000};
139
140/* Player status */
141typedef   struct playerTracker {
142  byte lastReading;      // last raw value read
143  long   lastChangeTime;   // last time the raw value changed
144  byte state;            //   debounced state of the button
145  bool success;
146} player;
147
148player p;
149
150/*   //////////////////////////////////////// SETUP ////////////////////////////////////////   */
151void setup() {
152  // Button
153  initButton(b, pinButton);
154  // Accelerometer
155   pinMode(pinX, INPUT);
156  pinMode(pinY, INPUT);
157  // Matrix setup and patterns
158   initMatrix();
159  initPatterns();
160  initGame(p);
161}
162
163void initButton(butt   &button, int pinButton) {  
164  pinMode(pinButton, INPUT);
165  button.lastReading   = digitalRead(pinButton);
166  button.lastChangeTime = millis();
167  button.pin   = pinButton;
168  button.buttonState = button.lastReading;
169}
170
171void initMatrix()   {
172  for(int i = 0; i < 8; i++) {
173    pinMode(COLS[i], OUTPUT);
174    pinMode(ROWS[i],   OUTPUT);
175  }
176  for(int i = 0; i < SIZE; i++) {
177    digitalWrite(COLS[i],   LOW);
178  }
179  for(int i = 0; i < 8; i++) {
180    digitalWrite(ROWS[i], HIGH);
181   }
182}
183
184void initPatterns() {
185  ARR1.p = ARRp; ARR1.t = 1000;
186  ARR2.p   = ARRp; ARR2.t = 500;
187  ARR[0] = ARR1; ARR[1] = ARR2;
188  GO.p = GOp; GO.t =   1000;
189  THREE.p = THREEp; THREE.t = 1000;
190  TWO.p = TWOp; TWO.t = 1000;
191   ONE.p = ONEp; ONE.t = 1000;
192  COUNT[0] = THREE; COUNT[1] = TWO; COUNT[2] =   ONE; COUNT[3] = GO;
193  CORRECT.p = CORRECTp; CORRECT.t = 2000;
194  WRONG.p =   WRONGp; WRONG.t = 2000;
195  noteC1.p = C1p;
196  noteD1.p = D1p;
197  noteE1.p   = E1p;
198  noteF1.p = F1p;
199  noteG1.p = G1p;
200  noteA1.p = A1p;
201  noteB1.p   = B1p;
202  noteC2.p = C2p;
203  NOTES[0] = noteC1; NOTES[1] = noteD1; NOTES[2]   = noteE1; NOTES[3] = noteF1;
204  NOTES[4] = noteG1; NOTES[5] = noteA1; NOTES[6]   = noteB1; NOTES[7] = noteC2;
205}
206
207void initGame(player &pl) {
208  // Initialize   the game
209  state = introMode;
210  currentMelody = 0;
211  currentNote = 0;
212   // Initialize player's status
213  pl.lastReading = 0;
214  pl.lastChangeTime   = millis();
215  pl.state = pl.lastReading; 
216  pl.success = false;       // false   means the user has failed, true means he has succeed
217  // Initialize game rounds   and assign melodies
218  game1.notes = notes1; game1.duration = durat1; game1.len   = 4;
219  game2.notes = notes2; game2.duration = durat2; game2.len = 5;
220  game3.notes   = notes3; game3.duration = durat3; game3.len = 7;
221  game4.notes = notes4; game4.duration   = durat4; game4.len = 9;
222  gameCollection[0] = game1; 
223  gameCollection[1]   = game2;
224  gameCollection[2] = game3;
225  gameCollection[3] = game4;
226}
227
228/*   ///////////////////////////////////////// LOOP /////////////////////////////////////////   */
229void loop() {
230  if (state == introMode){
231    introScreen();
232    if   (buttonPressed(b) == true) state = readyMode;
233  }
234  if (state == readyMode)   {
235    readyScreen();
236    state = melodyMode;
237  }
238  if (state == melodyMode)   {
239    melodyScreen();
240    state = gameMode;
241  }
242  if (state == gameMode)   {
243    gameScreen();
244  }
245  if (state == resultMode) {
246    resultScreen();
247     state = readyMode;
248  }
249}
250
251void introScreen() {
252  for (byte i   = 0; i < 2; i++){
253    unsigned long startTime = millis();
254    while(ARR[i].t   > ((millis() - startTime))) {
255      if (i == 0) lightRow(ARR[i].p[CROW]);
256       else lightRowDim(ARR[i].p[CROW]);
257    }
258  }
259}
260
261void readyScreen()   {
262  for (byte i = 0; i < 4; i++){
263    tone(pinSpeaker, readyMelody[i]);
264     unsigned long startTime = millis();
265    while(COUNT[i].t > ((millis() - startTime)))   {
266      if ((COUNT[i].t - 400) < ((millis() - startTime))) noTone(pinSpeaker);
267       lightRow(COUNT[i].p[CROW]);
268    }
269  }
270}
271
272void melodyScreen()   {
273  int   lenM       = gameCollection[currentMelody].len;
274  byte* notesM     =   gameCollection[currentMelody].notes;
275  int*  durationM  = gameCollection[currentMelody].duration;
276   for (byte i = 0; i < lenM; i++){
277    tone(pinSpeaker, SCALE[notesM[i]]);
278     unsigned long startTime = millis();
279    while(durationM[i] > ((millis() -   startTime))) {
280      if ((durationM[i]- 100) < ((millis() - startTime))) noTone(pinSpeaker);
281       lightRow(NOTES[notesM[i]].p[CROW]);
282    }
283  }
284}
285
286void gameScreen()   {
287  readAccel();
288  readPos(p);
289  if (buttonPressed(b) == false) {
290    noTone(pinSpeaker);
291     for (int i = 0; i < 8; i++){
292      lightRowDim(NOTES[p.state].p[CROW]);  
293     }
294  } else checkGame();
295}
296
297void resultScreen() {
298  for (byte   i = 0; i < 2; i++){
299    unsigned long startTime = millis();
300    if (p.success)   {
301      tone(pinSpeaker, correctMelody[i]);
302      while(500 > ((millis() -   startTime))) {
303        lightRow(CORRECT.p[CROW]);
304      }
305    } else {
306       tone(pinSpeaker, wrongMelody[i]);
307      while(500 > ((millis() - startTime)))   {
308        lightRow(WRONG.p[CROW]);
309      }    
310    }
311  }
312  noTone(pinSpeaker);
313   delay(1000);
314}
315
316void checkGame(){
317  byte note = gameCollection[currentMelody].notes[currentNote];
318   if (p.state != note) {
319    p.success = false;
320    currentNote = 0;
321    state   = resultMode;
322    delay(200);
323    noTone(pinSpeaker);  
324    delay(50);
325   } else if (p.state == note && currentNote == (gameCollection[currentMelody].len   - 1)) {
326    p.success = true;
327    currentNote = 0;
328    currentMelody =   (currentMelody + 1) % 4;
329    state = resultMode;
330    delay(200);
331    noTone(pinSpeaker);   
332    delay(50);
333  } else {
334    p.success = false;
335    currentNote++;
336   }
337  while (digitalRead(b.pin) == true) {
338    for (int i = 0; i < 8; i++){
339       lightRow(NOTES[p.state].p[CROW]);
340      tone(pinSpeaker, SCALE[p.state]);
341     }
342  }
343}
344
345bool buttonPressed(butt &button) { 
346  // Swith must   stay stable this long (in msec) to register
347  const long debounceTime = 50;   
348   // Default to no change until we find out otherwise
349  boolean result = false;   
350  // Get the current raw reading from the switch
351  int reading = digitalRead(button.pin);
352   if (reading != button.lastReading) {
353    button.lastChangeTime = millis();
354     button.lastReading = reading;
355  }
356  if ((millis() - button.lastChangeTime)   > debounceTime) {
357    button.buttonState = reading;
358    result = (button.buttonState   == 1);
359  }
360  return result;
361}
362
363void readAccel() {
364  int xRead   = 0, yRead = 0;
365  int  xAng = 0,  yAng = 0;
366  int sampleSize = 4;
367  for(int   i = 0; i < sampleSize ; i++) {
368    xRead += analogRead(pinX);
369    yRead +=   analogRead(pinY);
370    //zRead += analogRead(pinZ);
371  }
372  xRead = xRead   / sampleSize;
373  yRead = yRead / sampleSize;
374  //zRead = zRead / sampleSize;
375   xAng = map(xRead, xMinVal, xMaxVal, -90, 90);
376  yAng = map(yRead, yMinVal,   yMaxVal, -90, 90);
377  //zAng = map(zRead, zMinVal, zMaxVal, -90, 90);
378  //x   = RAD_TO_DEG * (atan2(-yAng, -zAng) + PI);
379  //y = RAD_TO_DEG * (atan2(-xAng,   -zAng) + PI);
380  angle = RAD_TO_DEG * (atan2(-yAng, -xAng) + PI);
381  //Serial.print("angle   = "); Serial.println(z);
382}
383
384void readPos(player &pl) {
385  // Player   position must stay stable this long (in msec) to register
386  const long debounceTime   = 20;
387  // Get the current raw reading from the accelerometer
388  byte reading   = 0;
389  if (158 < angle && angle <= 203) reading = 0;
390  if (203 < angle &&   angle <= 248) reading = 1;
391  if (248 < angle && angle <= 293) reading = 2;
392   if (293 < angle && angle <= 338) reading = 3;
393  if (338 < angle || angle <=   23) reading = 4;
394  if ( 23 < angle && angle <=  68) reading = 5;
395  if (   68 < angle && angle <= 113) reading = 6;
396  if (113 < angle && angle <= 158) reading   = 7;
397  if (reading != pl.lastReading) {
398    pl.lastChangeTime = millis();
399     pl.lastReading = reading;
400  }
401  if ((millis() - pl.lastChangeTime) > debounceTime)   {
402    pl.state = reading;
403  }
404}
405
406void lightRow(byte hex) {
407  digitalWrite(ROWS[CROW],   LOW);
408  for(byte i = 0; i < 8; i++) {
409    digitalWrite(COLS[i], (hex>>i) &   0x01);
410  }
411  for(byte i = 0; i < 8; i++) {
412    digitalWrite(COLS[i], LOW);
413   }
414  digitalWrite(ROWS[CROW], HIGH);
415  CROW = (CROW + 1) % SIZE;
416}
417
418void   lightRowDim(byte hex) {
419  digitalWrite(ROWS[CROW], LOW);
420  for(byte i = 0;   i < 8; i++) {
421    digitalWrite(COLS[i], (hex>>i) & 0x01);
422  }
423  for(byte   i = 0; i < 8; i++) {
424    digitalWrite(COLS[i], LOW);
425  }
426  digitalWrite(ROWS[CROW],   HIGH);
427  delay(1);
428  CROW = (CROW + 1) % SIZE;
429}

// GRAVITY SIMON GAME
// This program will execute a remake version   of Simon Game controlled with an
// accelerometer sensor and will display and   play sounds accordingly to the 
// orientation of the sensor.

// Created   October 16, 2020
// by Policarpo Baquera
// Carnegie Mellon University 
//   More info at: https://create.arduino.cc/projecthub/plcrpbqr/gravity-simon-game-df5d00

/*   //////////////////////////////////// ADXL335 SETUP ////////////////////////////////////   */
#include "Arduino.h"
#include <math.h>
const byte pinX = A7;
const   byte pinY = A6;
const int xMinVal = 289; const int yMinVal = 279; //const int   zMinVal = 291;
const int xMaxVal = 424; const int yMaxVal = 416; //const int   zMaxVal = 424;
int angle = 0;

/* ////////////////////////////////////////   BUTTON /////////////////////////////////////// */
const byte pinButton = 13;

/*   Struct to track and debounce the state of a push button switch */
typedef struct   buttonTracker {
  int  lastReading;       // last raw value read
  long lastChangeTime;     // last time the raw value changed
  byte pin;               // the pin this   is tracking changes on
  byte buttonState;       // debounced state of the button
}   butt;

butt b;

/* /////////////////////////////////////// SPEAKER ///////////////////////////////////////   */
#include"pitches.h"
const byte pinSpeaker = 10;
const int SCALE[8]   = {NOTE_C3, NOTE_D3, NOTE_E3, NOTE_F3, NOTE_G3, NOTE_A3, NOTE_B3, NOTE_C4};
const   int readyMelody[4]   = {NOTE_C3, NOTE_C3, NOTE_C3, NOTE_C4};
const int correctMelody[2]   = {NOTE_B3, NOTE_C4};
const int wrongMelody[4]   = {NOTE_D3, NOTE_CS3};

/*   /////////////////////////////////////// DISPLAY ///////////////////////////////////////   */
/* LED Matrix pin values */
const byte pin01 = 6;
const byte pin02 =   7;
const byte pin03 = 8;
const byte pin04 = 9;
const byte pin05 = 2;
const   byte pin06 = 3;
const byte pin07 = 4;
const byte pin08 = 5;
const byte   pin09 = A0;
const byte pin10 = A1;
const byte pin11 = A2;
const byte pin12   = A3;
const byte pin13 = 12;
const byte pin14 = 11;
const byte pin15 =   A4;
const byte pin16 = A5;

/* Define cols and rows pin values for LED   Matrix */
#define SIZE 8
const byte COLS[8] = {pin05, pin02, pin07, pin01,   pin12, pin08, pin14, pin09};
const byte ROWS[8] = {pin13, pin03, pin04, pin10,   pin06, pin11, pin15, pin16};
      byte CROW    =  0;

/* Struct for animation   frames */
typedef struct {
  byte *p;       // Hex Pattern
  int t;         //   Animation time
} pattern;

/* Patterns */
byte ARRp[8]     = {0x18,   0x3C, 0x7E, 0xDB, 0x18, 0x18, 0x18, 0x18};
byte GOp[8]      = {0x00, 0x66, 0x99,   0xB9, 0x89, 0x99, 0x66, 0x00};
byte THREEp[8]   = {0x00, 0x38, 0x04, 0x04, 0x38,   0x04, 0x38, 0x00};
byte TWOp[8]     = {0x00, 0x3C, 0x10, 0x08, 0x04, 0x24, 0x18,   0x00};
byte ONEp[8]     = {0x00, 0x08, 0x08, 0x08, 0x28, 0x18, 0x08, 0x00};
byte   CORRECTp[8] = {0x00, 0x00, 0x10, 0x28, 0x44, 0x02, 0x00, 0x00};
byte WRONGp[8]    = {0x00, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x00};
byte C1p[8]      = {0xFF,   0xFF, 0xFF, 0x81, 0x81, 0x81, 0x81, 0xFF};
byte D1p[8]      = {0xFF, 0x8F, 0x87,   0x83, 0x81, 0x81, 0x81, 0xFF};
byte E1p[8]      = {0xFF, 0x87, 0x87, 0x87, 0x87,   0x87, 0x87, 0xFF};
byte F1p[8]      = {0xFF, 0x81, 0x81, 0x81, 0x83, 0x87, 0x8F,   0xFF};
byte G1p[8]      = {0xFF, 0x81, 0x81, 0x81, 0x81, 0xFF, 0xFF, 0xFF};
byte   A1p[8]      = {0xFF, 0x81, 0x81, 0x81, 0xC1, 0xE1, 0xF1, 0xFF};
byte B1p[8]      =   {0xFF, 0xE1, 0xE1, 0xE1, 0xE1, 0xE1, 0xE1, 0xFF};
byte C2p[8]      = {0xFF, 0xF1,   0xE1, 0xC1, 0x81, 0x81, 0x81, 0xFF};

/* Frames and animations */
pattern   ARR1;        // ARROW 0.8s frame 
pattern ARR2;        // ARROW 0.2s frame 
pattern   ARR[2];      // ARROW 1.0s animation
pattern GO;          // GO    1s frame
pattern   THREE;       // THREE 1s frame 
pattern TWO;         // TWO   1s frame 
pattern   ONE;         // ONE   1s frame 
pattern COUNT[4];    // COUNT 4s animation
pattern   CORRECT;     // CORRECT 2s frame 
pattern WRONG;       // WRONG   2s frame 
pattern   noteC1;
pattern noteD1;
pattern noteE1;
pattern noteF1;
pattern noteG1;
pattern   noteA1;
pattern noteB1;
pattern noteC2; 
pattern NOTES[8];

/* ////////////////////////////////////////   GAME ///////////////////////////////////////// */
/* Game state */
enum modes{introMode,   readyMode, melodyMode, gameMode, resultMode};
enum modes state;
byte currentMelody;
int   currentNote;

/* Game rounds */
typedef struct{
  byte *notes;
   int *duration;
  int len;
} game;

game game1;
game game2;
game   game3;
game game4;
game gameCollection[4];

/* Game melodies */
byte   notes1[4] = {   0,    0,    4,    2};
int  durat1[4] = {1000, 1000, 1000, 1000};
byte   notes2[5] = {   4,    1,    2,    5,    4};
int  durat2[5] = {1500,  500, 1000,   1000, 2000};
byte notes3[7] = {   1,    3,    1,    2,    0,    4,    7};
int   durat3[7] = { 800,  800,  800,  800,  800,  800,  800};
byte notes4[9] = {    0,    7,    6,    5,    4,    1,    2,    3,    4};
int  durat4[9] = {1000,   1000, 1500,  500,  500,  500,  500,  500, 1000};

/* Player status */
typedef   struct playerTracker {
  byte lastReading;      // last raw value read
  long   lastChangeTime;   // last time the raw value changed
  byte state;            //   debounced state of the button
  bool success;
} player;

player p;

/*   //////////////////////////////////////// SETUP ////////////////////////////////////////   */
void setup() {
  // Button
  initButton(b, pinButton);
  // Accelerometer
   pinMode(pinX, INPUT);
  pinMode(pinY, INPUT);
  // Matrix setup and patterns
   initMatrix();
  initPatterns();
  initGame(p);
}

void initButton(butt   &button, int pinButton) {  
  pinMode(pinButton, INPUT);
  button.lastReading   = digitalRead(pinButton);
  button.lastChangeTime = millis();
  button.pin   = pinButton;
  button.buttonState = button.lastReading;
}

void initMatrix()   {
  for(int i = 0; i < 8; i++) {
    pinMode(COLS[i], OUTPUT);
    pinMode(ROWS[i],   OUTPUT);
  }
  for(int i = 0; i < SIZE; i++) {
    digitalWrite(COLS[i],   LOW);
  }
  for(int i = 0; i < 8; i++) {
    digitalWrite(ROWS[i], HIGH);
   }
}

void initPatterns() {
  ARR1.p = ARRp; ARR1.t = 1000;
  ARR2.p   = ARRp; ARR2.t = 500;
  ARR[0] = ARR1; ARR[1] = ARR2;
  GO.p = GOp; GO.t =   1000;
  THREE.p = THREEp; THREE.t = 1000;
  TWO.p = TWOp; TWO.t = 1000;
   ONE.p = ONEp; ONE.t = 1000;
  COUNT[0] = THREE; COUNT[1] = TWO; COUNT[2] =   ONE; COUNT[3] = GO;
  CORRECT.p = CORRECTp; CORRECT.t = 2000;
  WRONG.p =   WRONGp; WRONG.t = 2000;
  noteC1.p = C1p;
  noteD1.p = D1p;
  noteE1.p   = E1p;
  noteF1.p = F1p;
  noteG1.p = G1p;
  noteA1.p = A1p;
  noteB1.p   = B1p;
  noteC2.p = C2p;
  NOTES[0] = noteC1; NOTES[1] = noteD1; NOTES[2]   = noteE1; NOTES[3] = noteF1;
  NOTES[4] = noteG1; NOTES[5] = noteA1; NOTES[6]   = noteB1; NOTES[7] = noteC2;
}

void initGame(player &pl) {
  // Initialize   the game
  state = introMode;
  currentMelody = 0;
  currentNote = 0;
   // Initialize player's status
  pl.lastReading = 0;
  pl.lastChangeTime   = millis();
  pl.state = pl.lastReading; 
  pl.success = false;       // false   means the user has failed, true means he has succeed
  // Initialize game rounds   and assign melodies
  game1.notes = notes1; game1.duration = durat1; game1.len   = 4;
  game2.notes = notes2; game2.duration = durat2; game2.len = 5;
  game3.notes   = notes3; game3.duration = durat3; game3.len = 7;
  game4.notes = notes4; game4.duration   = durat4; game4.len = 9;
  gameCollection[0] = game1; 
  gameCollection[1]   = game2;
  gameCollection[2] = game3;
  gameCollection[3] = game4;
}

/*   ///////////////////////////////////////// LOOP /////////////////////////////////////////   */
void loop() {
  if (state == introMode){
    introScreen();
    if   (buttonPressed(b) == true) state = readyMode;
  }
  if (state == readyMode)   {
    readyScreen();
    state = melodyMode;
  }
  if (state == melodyMode)   {
    melodyScreen();
    state = gameMode;
  }
  if (state == gameMode)   {
    gameScreen();
  }
  if (state == resultMode) {
    resultScreen();
     state = readyMode;
  }
}

void introScreen() {
  for (byte i   = 0; i < 2; i++){
    unsigned long startTime = millis();
    while(ARR[i].t   > ((millis() - startTime))) {
      if (i == 0) lightRow(ARR[i].p[CROW]);
       else lightRowDim(ARR[i].p[CROW]);
    }
  }
}

void readyScreen()   {
  for (byte i = 0; i < 4; i++){
    tone(pinSpeaker, readyMelody[i]);
     unsigned long startTime = millis();
    while(COUNT[i].t > ((millis() - startTime)))   {
      if ((COUNT[i].t - 400) < ((millis() - startTime))) noTone(pinSpeaker);
       lightRow(COUNT[i].p[CROW]);
    }
  }
}

void melodyScreen()   {
  int   lenM       = gameCollection[currentMelody].len;
  byte* notesM     =   gameCollection[currentMelody].notes;
  int*  durationM  = gameCollection[currentMelody].duration;
   for (byte i = 0; i < lenM; i++){
    tone(pinSpeaker, SCALE[notesM[i]]);
     unsigned long startTime = millis();
    while(durationM[i] > ((millis() -   startTime))) {
      if ((durationM[i]- 100) < ((millis() - startTime))) noTone(pinSpeaker);
       lightRow(NOTES[notesM[i]].p[CROW]);
    }
  }
}

void gameScreen()   {
  readAccel();
  readPos(p);
  if (buttonPressed(b) == false) {
    noTone(pinSpeaker);
     for (int i = 0; i < 8; i++){
      lightRowDim(NOTES[p.state].p[CROW]);  
     }
  } else checkGame();
}

void resultScreen() {
  for (byte   i = 0; i < 2; i++){
    unsigned long startTime = millis();
    if (p.success)   {
      tone(pinSpeaker, correctMelody[i]);
      while(500 > ((millis() -   startTime))) {
        lightRow(CORRECT.p[CROW]);
      }
    } else {
       tone(pinSpeaker, wrongMelody[i]);
      while(500 > ((millis() - startTime)))   {
        lightRow(WRONG.p[CROW]);
      }    
    }
  }
  noTone(pinSpeaker);
   delay(1000);
}

void checkGame(){
  byte note = gameCollection[currentMelody].notes[currentNote];
   if (p.state != note) {
    p.success = false;
    currentNote = 0;
    state   = resultMode;
    delay(200);
    noTone(pinSpeaker);  
    delay(50);
   } else if (p.state == note && currentNote == (gameCollection[currentMelody].len   - 1)) {
    p.success = true;
    currentNote = 0;
    currentMelody =   (currentMelody + 1) % 4;
    state = resultMode;
    delay(200);
    noTone(pinSpeaker);   
    delay(50);
  } else {
    p.success = false;
    currentNote++;
   }
  while (digitalRead(b.pin) == true) {
    for (int i = 0; i < 8; i++){
       lightRow(NOTES[p.state].p[CROW]);
      tone(pinSpeaker, SCALE[p.state]);
     }
  }
}

bool buttonPressed(butt &button) { 
  // Swith must   stay stable this long (in msec) to register
  const long debounceTime = 50;   
   // Default to no change until we find out otherwise
  boolean result = false;   
  // Get the current raw reading from the switch
  int reading = digitalRead(button.pin);
   if (reading != button.lastReading) {
    button.lastChangeTime = millis();
     button.lastReading = reading;
  }
  if ((millis() - button.lastChangeTime)   > debounceTime) {
    button.buttonState = reading;
    result = (button.buttonState   == 1);
  }
  return result;
}

void readAccel() {
  int xRead   = 0, yRead = 0;
  int  xAng = 0,  yAng = 0;
  int sampleSize = 4;
  for(int   i = 0; i < sampleSize ; i++) {
    xRead += analogRead(pinX);
    yRead +=   analogRead(pinY);
    //zRead += analogRead(pinZ);
  }
  xRead = xRead   / sampleSize;
  yRead = yRead / sampleSize;
  //zRead = zRead / sampleSize;
   xAng = map(xRead, xMinVal, xMaxVal, -90, 90);
  yAng = map(yRead, yMinVal,   yMaxVal, -90, 90);
  //zAng = map(zRead, zMinVal, zMaxVal, -90, 90);
  //x   = RAD_TO_DEG * (atan2(-yAng, -zAng) + PI);
  //y = RAD_TO_DEG * (atan2(-xAng,   -zAng) + PI);
  angle = RAD_TO_DEG * (atan2(-yAng, -xAng) + PI);
  //Serial.print("angle   = "); Serial.println(z);
}

void readPos(player &pl) {
  // Player   position must stay stable this long (in msec) to register
  const long debounceTime   = 20;
  // Get the current raw reading from the accelerometer
  byte reading   = 0;
  if (158 < angle && angle <= 203) reading = 0;
  if (203 < angle &&   angle <= 248) reading = 1;
  if (248 < angle && angle <= 293) reading = 2;
   if (293 < angle && angle <= 338) reading = 3;
  if (338 < angle || angle <=   23) reading = 4;
  if ( 23 < angle && angle <=  68) reading = 5;
  if (   68 < angle && angle <= 113) reading = 6;
  if (113 < angle && angle <= 158) reading   = 7;
  if (reading != pl.lastReading) {
    pl.lastChangeTime = millis();
     pl.lastReading = reading;
  }
  if ((millis() - pl.lastChangeTime) > debounceTime)   {
    pl.state = reading;
  }
}

void lightRow(byte hex) {
  digitalWrite(ROWS[CROW],   LOW);
  for(byte i = 0; i < 8; i++) {
    digitalWrite(COLS[i], (hex>>i) &   0x01);
  }
  for(byte i = 0; i < 8; i++) {
    digitalWrite(COLS[i], LOW);
   }
  digitalWrite(ROWS[CROW], HIGH);
  CROW = (CROW + 1) % SIZE;
}

void   lightRowDim(byte hex) {
  digitalWrite(ROWS[CROW], LOW);
  for(byte i = 0;   i < 8; i++) {
    digitalWrite(COLS[i], (hex>>i) & 0x01);
  }
  for(byte   i = 0; i < 8; i++) {
    digitalWrite(COLS[i], LOW);
  }
  digitalWrite(ROWS[CROW],   HIGH);
  delay(1);
  CROW = (CROW + 1) % SIZE;
}

Pitches Library

arduino

Library with musical note frequencies.

1#define NOTE_B0  31
2#define NOTE_C1  33
3#define NOTE_CS1 35
4#define  NOTE_D1  37
5#define NOTE_DS1 39
6#define NOTE_E1  41
7#define NOTE_F1  44
8#define  NOTE_FS1 46
9#define NOTE_G1  49
10#define NOTE_GS1 52
11#define NOTE_A1  55
12#define  NOTE_AS1 58
13#define NOTE_B1  62
14#define NOTE_C2  65
15#define NOTE_CS2 69
16#define  NOTE_D2  73
17#define NOTE_DS2 78
18#define NOTE_E2  82
19#define NOTE_F2  87
20#define  NOTE_FS2 93
21#define NOTE_G2  98
22#define NOTE_GS2 104
23#define NOTE_A2  110
24#define  NOTE_AS2 117
25#define NOTE_B2  123
26#define NOTE_C3  131
27#define NOTE_CS3  139
28#define NOTE_D3  147
29#define NOTE_DS3 156
30#define NOTE_E3  165
31#define  NOTE_F3  175
32#define NOTE_FS3 185
33#define NOTE_G3  196
34#define NOTE_GS3  208
35#define NOTE_A3  220
36#define NOTE_AS3 233
37#define NOTE_B3  247
38#define  NOTE_C4  262
39#define NOTE_CS4 277
40#define NOTE_D4  294
41#define NOTE_DS4  311
42#define NOTE_E4  330
43#define NOTE_F4  349
44#define NOTE_FS4 370
45#define  NOTE_G4  392
46#define NOTE_GS4 415
47#define NOTE_A4  440
48#define NOTE_AS4  466
49#define NOTE_B4  494
50#define NOTE_C5  523
51#define NOTE_CS5 554
52#define  NOTE_D5  587
53#define NOTE_DS5 622
54#define NOTE_E5  659
55#define NOTE_F5  698
56#define NOTE_FS5 740
57#define NOTE_G5  784
58#define NOTE_GS5 831
59#define  NOTE_A5  880
60#define NOTE_AS5 932
61#define NOTE_B5  988
62#define NOTE_C6  1047
63#define NOTE_CS6 1109
64#define NOTE_D6  1175
65#define NOTE_DS6 1245
66#define  NOTE_E6  1319
67#define NOTE_F6  1397
68#define NOTE_FS6 1480
69#define NOTE_G6  1568
70#define NOTE_GS6 1661
71#define NOTE_A6  1760
72#define NOTE_AS6 1865
73#define  NOTE_B6  1976
74#define NOTE_C7  2093
75#define NOTE_CS7 2217
76#define NOTE_D7  2349
77#define NOTE_DS7 2489
78#define NOTE_E7  2637
79#define NOTE_F7  2794
80#define  NOTE_FS7 2960
81#define NOTE_G7  3136
82#define NOTE_GS7 3322
83#define NOTE_A7  3520
84#define NOTE_AS7 3729
85#define NOTE_B7  3951
86#define NOTE_C8  4186
87#define  NOTE_CS8 4435
88#define NOTE_D8  4699
89#define NOTE_DS8 4978
90#define END -1

#define NOTE_B0  31
#define NOTE_C1  33
#define NOTE_CS1 35
#define  NOTE_D1  37
#define NOTE_DS1 39
#define NOTE_E1  41
#define NOTE_F1  44
#define  NOTE_FS1 46
#define NOTE_G1  49
#define NOTE_GS1 52
#define NOTE_A1  55
#define  NOTE_AS1 58
#define NOTE_B1  62
#define NOTE_C2  65
#define NOTE_CS2 69
#define  NOTE_D2  73
#define NOTE_DS2 78
#define NOTE_E2  82
#define NOTE_F2  87
#define  NOTE_FS2 93
#define NOTE_G2  98
#define NOTE_GS2 104
#define NOTE_A2  110
#define  NOTE_AS2 117
#define NOTE_B2  123
#define NOTE_C3  131
#define NOTE_CS3  139
#define NOTE_D3  147
#define NOTE_DS3 156
#define NOTE_E3  165
#define  NOTE_F3  175
#define NOTE_FS3 185
#define NOTE_G3  196
#define NOTE_GS3  208
#define NOTE_A3  220
#define NOTE_AS3 233
#define NOTE_B3  247
#define  NOTE_C4  262
#define NOTE_CS4 277
#define NOTE_D4  294
#define NOTE_DS4  311
#define NOTE_E4  330
#define NOTE_F4  349
#define NOTE_FS4 370
#define  NOTE_G4  392
#define NOTE_GS4 415
#define NOTE_A4  440
#define NOTE_AS4  466
#define NOTE_B4  494
#define NOTE_C5  523
#define NOTE_CS5 554
#define  NOTE_D5  587
#define NOTE_DS5 622
#define NOTE_E5  659
#define NOTE_F5  698
#define NOTE_FS5 740
#define NOTE_G5  784
#define NOTE_GS5 831
#define  NOTE_A5  880
#define NOTE_AS5 932
#define NOTE_B5  988
#define NOTE_C6  1047
#define NOTE_CS6 1109
#define NOTE_D6  1175
#define NOTE_DS6 1245
#define  NOTE_E6  1319
#define NOTE_F6  1397
#define NOTE_FS6 1480
#define NOTE_G6  1568
#define NOTE_GS6 1661
#define NOTE_A6  1760
#define NOTE_AS6 1865
#define  NOTE_B6  1976
#define NOTE_C7  2093
#define NOTE_CS7 2217
#define NOTE_D7  2349
#define NOTE_DS7 2489
#define NOTE_E7  2637
#define NOTE_F7  2794
#define  NOTE_FS7 2960
#define NOTE_G7  3136
#define NOTE_GS7 3322
#define NOTE_A7  3520
#define NOTE_AS7 3729
#define NOTE_B7  3951
#define NOTE_C8  4186
#define  NOTE_CS8 4435
#define NOTE_D8  4699
#define NOTE_DS8 4978
#define END -1

Gravity Simon Game Code

arduino

Setup and gameplay

1// GRAVITY SIMON GAME
2// This program will execute a remake version  of Simon Game controlled with an
3// accelerometer sensor and will display and  play sounds accordingly to the 
4// orientation of the sensor.
5
6// Created  October 16, 2020
7// by Policarpo Baquera
8// Carnegie Mellon University 
9//  More info at: https://create.arduino.cc/projecthub/plcrpbqr/gravity-simon-game-df5d00
10
11/*  //////////////////////////////////// ADXL335 SETUP ////////////////////////////////////  */
12#include "Arduino.h"
13#include <math.h>
14const byte pinX = A7;
15const  byte pinY = A6;
16const int xMinVal = 289; const int yMinVal = 279; //const int  zMinVal = 291;
17const int xMaxVal = 424; const int yMaxVal = 416; //const int  zMaxVal = 424;
18int angle = 0;
19
20/* ////////////////////////////////////////  BUTTON /////////////////////////////////////// */
21const byte pinButton = 13;
22
23/*  Struct to track and debounce the state of a push button switch */
24typedef struct  buttonTracker {
25  int  lastReading;       // last raw value read
26  long lastChangeTime;    // last time the raw value changed
27  byte pin;               // the pin this  is tracking changes on
28  byte buttonState;       // debounced state of the button
29}  butt;
30
31butt b;
32
33/* /////////////////////////////////////// SPEAKER ///////////////////////////////////////  */
34#include"pitches.h"
35const byte pinSpeaker = 10;
36const int SCALE[8]  = {NOTE_C3, NOTE_D3, NOTE_E3, NOTE_F3, NOTE_G3, NOTE_A3, NOTE_B3, NOTE_C4};
37const  int readyMelody[4]   = {NOTE_C3, NOTE_C3, NOTE_C3, NOTE_C4};
38const int correctMelody[2]  = {NOTE_B3, NOTE_C4};
39const int wrongMelody[4]   = {NOTE_D3, NOTE_CS3};
40
41/*  /////////////////////////////////////// DISPLAY ///////////////////////////////////////  */
42/* LED Matrix pin values */
43const byte pin01 = 6;
44const byte pin02 =  7;
45const byte pin03 = 8;
46const byte pin04 = 9;
47const byte pin05 = 2;
48const  byte pin06 = 3;
49const byte pin07 = 4;
50const byte pin08 = 5;
51const byte  pin09 = A0;
52const byte pin10 = A1;
53const byte pin11 = A2;
54const byte pin12  = A3;
55const byte pin13 = 12;
56const byte pin14 = 11;
57const byte pin15 =  A4;
58const byte pin16 = A5;
59
60/* Define cols and rows pin values for LED  Matrix */
61#define SIZE 8
62const byte COLS[8] = {pin05, pin02, pin07, pin01,  pin12, pin08, pin14, pin09};
63const byte ROWS[8] = {pin13, pin03, pin04, pin10,  pin06, pin11, pin15, pin16};
64      byte CROW    =  0;
65
66/* Struct for animation  frames */
67typedef struct {
68  byte *p;       // Hex Pattern
69  int t;         //  Animation time
70} pattern;
71
72/* Patterns */
73byte ARRp[8]     = {0x18,  0x3C, 0x7E, 0xDB, 0x18, 0x18, 0x18, 0x18};
74byte GOp[8]      = {0x00, 0x66, 0x99,  0xB9, 0x89, 0x99, 0x66, 0x00};
75byte THREEp[8]   = {0x00, 0x38, 0x04, 0x04, 0x38,  0x04, 0x38, 0x00};
76byte TWOp[8]     = {0x00, 0x3C, 0x10, 0x08, 0x04, 0x24, 0x18,  0x00};
77byte ONEp[8]     = {0x00, 0x08, 0x08, 0x08, 0x28, 0x18, 0x08, 0x00};
78byte  CORRECTp[8] = {0x00, 0x00, 0x10, 0x28, 0x44, 0x02, 0x00, 0x00};
79byte WRONGp[8]   = {0x00, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x00};
80byte C1p[8]      = {0xFF,  0xFF, 0xFF, 0x81, 0x81, 0x81, 0x81, 0xFF};
81byte D1p[8]      = {0xFF, 0x8F, 0x87,  0x83, 0x81, 0x81, 0x81, 0xFF};
82byte E1p[8]      = {0xFF, 0x87, 0x87, 0x87, 0x87,  0x87, 0x87, 0xFF};
83byte F1p[8]      = {0xFF, 0x81, 0x81, 0x81, 0x83, 0x87, 0x8F,  0xFF};
84byte G1p[8]      = {0xFF, 0x81, 0x81, 0x81, 0x81, 0xFF, 0xFF, 0xFF};
85byte  A1p[8]      = {0xFF, 0x81, 0x81, 0x81, 0xC1, 0xE1, 0xF1, 0xFF};
86byte B1p[8]      =  {0xFF, 0xE1, 0xE1, 0xE1, 0xE1, 0xE1, 0xE1, 0xFF};
87byte C2p[8]      = {0xFF, 0xF1,  0xE1, 0xC1, 0x81, 0x81, 0x81, 0xFF};
88
89/* Frames and animations */
90pattern  ARR1;        // ARROW 0.8s frame 
91pattern ARR2;        // ARROW 0.2s frame 
92pattern  ARR[2];      // ARROW 1.0s animation
93pattern GO;          // GO    1s frame
94pattern  THREE;       // THREE 1s frame 
95pattern TWO;         // TWO   1s frame 
96pattern  ONE;         // ONE   1s frame 
97pattern COUNT[4];    // COUNT 4s animation
98pattern  CORRECT;     // CORRECT 2s frame 
99pattern WRONG;       // WRONG   2s frame 
100pattern  noteC1;
101pattern noteD1;
102pattern noteE1;
103pattern noteF1;
104pattern noteG1;
105pattern  noteA1;
106pattern noteB1;
107pattern noteC2; 
108pattern NOTES[8];
109
110/* ////////////////////////////////////////  GAME ///////////////////////////////////////// */
111/* Game state */
112enum modes{introMode,  readyMode, melodyMode, gameMode, resultMode};
113enum modes state;
114byte currentMelody;
115int  currentNote;
116
117/* Game rounds */
118typedef struct{
119  byte *notes;
120  int *duration;
121  int len;
122} game;
123
124game game1;
125game game2;
126game  game3;
127game game4;
128game gameCollection[4];
129
130/* Game melodies */
131byte  notes1[4] = {   0,    0,    4,    2};
132int  durat1[4] = {1000, 1000, 1000, 1000};
133byte  notes2[5] = {   4,    1,    2,    5,    4};
134int  durat2[5] = {1500,  500, 1000,  1000, 2000};
135byte notes3[7] = {   1,    3,    1,    2,    0,    4,    7};
136int  durat3[7] = { 800,  800,  800,  800,  800,  800,  800};
137byte notes4[9] = {   0,    7,    6,    5,    4,    1,    2,    3,    4};
138int  durat4[9] = {1000,  1000, 1500,  500,  500,  500,  500,  500, 1000};
139
140/* Player status */
141typedef  struct playerTracker {
142  byte lastReading;      // last raw value read
143  long  lastChangeTime;   // last time the raw value changed
144  byte state;            //  debounced state of the button
145  bool success;
146} player;
147
148player p;
149
150/*  //////////////////////////////////////// SETUP ////////////////////////////////////////  */
151void setup() {
152  // Button
153  initButton(b, pinButton);
154  // Accelerometer
155  pinMode(pinX, INPUT);
156  pinMode(pinY, INPUT);
157  // Matrix setup and patterns
158  initMatrix();
159  initPatterns();
160  initGame(p);
161}
162
163void initButton(butt  &button, int pinButton) {  
164  pinMode(pinButton, INPUT);
165  button.lastReading  = digitalRead(pinButton);
166  button.lastChangeTime = millis();
167  button.pin  = pinButton;
168  button.buttonState = button.lastReading;
169}
170
171void initMatrix()  {
172  for(int i = 0; i < 8; i++) {
173    pinMode(COLS[i], OUTPUT);
174    pinMode(ROWS[i],  OUTPUT);
175  }
176  for(int i = 0; i < SIZE; i++) {
177    digitalWrite(COLS[i],  LOW);
178  }
179  for(int i = 0; i < 8; i++) {
180    digitalWrite(ROWS[i], HIGH);
181  }
182}
183
184void initPatterns() {
185  ARR1.p = ARRp; ARR1.t = 1000;
186  ARR2.p  = ARRp; ARR2.t = 500;
187  ARR[0] = ARR1; ARR[1] = ARR2;
188  GO.p = GOp; GO.t =  1000;
189  THREE.p = THREEp; THREE.t = 1000;
190  TWO.p = TWOp; TWO.t = 1000;
191  ONE.p = ONEp; ONE.t = 1000;
192  COUNT[0] = THREE; COUNT[1] = TWO; COUNT[2] =  ONE; COUNT[3] = GO;
193  CORRECT.p = CORRECTp; CORRECT.t = 2000;
194  WRONG.p =  WRONGp; WRONG.t = 2000;
195  noteC1.p = C1p;
196  noteD1.p = D1p;
197  noteE1.p  = E1p;
198  noteF1.p = F1p;
199  noteG1.p = G1p;
200  noteA1.p = A1p;
201  noteB1.p  = B1p;
202  noteC2.p = C2p;
203  NOTES[0] = noteC1; NOTES[1] = noteD1; NOTES[2]  = noteE1; NOTES[3] = noteF1;
204  NOTES[4] = noteG1; NOTES[5] = noteA1; NOTES[6]  = noteB1; NOTES[7] = noteC2;
205}
206
207void initGame(player &pl) {
208  // Initialize  the game
209  state = introMode;
210  currentMelody = 0;
211  currentNote = 0;
212  // Initialize player's status
213  pl.lastReading = 0;
214  pl.lastChangeTime  = millis();
215  pl.state = pl.lastReading; 
216  pl.success = false;       // false  means the user has failed, true means he has succeed
217  // Initialize game rounds  and assign melodies
218  game1.notes = notes1; game1.duration = durat1; game1.len  = 4;
219  game2.notes = notes2; game2.duration = durat2; game2.len = 5;
220  game3.notes  = notes3; game3.duration = durat3; game3.len = 7;
221  game4.notes = notes4; game4.duration  = durat4; game4.len = 9;
222  gameCollection[0] = game1; 
223  gameCollection[1]  = game2;
224  gameCollection[2] = game3;
225  gameCollection[3] = game4;
226}
227
228/*  ///////////////////////////////////////// LOOP /////////////////////////////////////////  */
229void loop() {
230  if (state == introMode){
231    introScreen();
232    if  (buttonPressed(b) == true) state = readyMode;
233  }
234  if (state == readyMode)  {
235    readyScreen();
236    state = melodyMode;
237  }
238  if (state == melodyMode)  {
239    melodyScreen();
240    state = gameMode;
241  }
242  if (state == gameMode)  {
243    gameScreen();
244  }
245  if (state == resultMode) {
246    resultScreen();
247    state = readyMode;
248  }
249}
250
251void introScreen() {
252  for (byte i  = 0; i < 2; i++){
253    unsigned long startTime = millis();
254    while(ARR[i].t  > ((millis() - startTime))) {
255      if (i == 0) lightRow(ARR[i].p[CROW]);
256      else lightRowDim(ARR[i].p[CROW]);
257    }
258  }
259}
260
261void readyScreen()  {
262  for (byte i = 0; i < 4; i++){
263    tone(pinSpeaker, readyMelody[i]);
264    unsigned long startTime = millis();
265    while(COUNT[i].t > ((millis() - startTime)))  {
266      if ((COUNT[i].t - 400) < ((millis() - startTime))) noTone(pinSpeaker);
267      lightRow(COUNT[i].p[CROW]);
268    }
269  }
270}
271
272void melodyScreen()  {
273  int   lenM       = gameCollection[currentMelody].len;
274  byte* notesM     =  gameCollection[currentMelody].notes;
275  int*  durationM  = gameCollection[currentMelody].duration;
276  for (byte i = 0; i < lenM; i++){
277    tone(pinSpeaker, SCALE[notesM[i]]);
278    unsigned long startTime = millis();
279    while(durationM[i] > ((millis() -  startTime))) {
280      if ((durationM[i]- 100) < ((millis() - startTime))) noTone(pinSpeaker);
281      lightRow(NOTES[notesM[i]].p[CROW]);
282    }
283  }
284}
285
286void gameScreen()  {
287  readAccel();
288  readPos(p);
289  if (buttonPressed(b) == false) {
290    noTone(pinSpeaker);
291    for (int i = 0; i < 8; i++){
292      lightRowDim(NOTES[p.state].p[CROW]);  
293    }
294  } else checkGame();
295}
296
297void resultScreen() {
298  for (byte  i = 0; i < 2; i++){
299    unsigned long startTime = millis();
300    if (p.success)  {
301      tone(pinSpeaker, correctMelody[i]);
302      while(500 > ((millis() -  startTime))) {
303        lightRow(CORRECT.p[CROW]);
304      }
305    } else {
306      tone(pinSpeaker, wrongMelody[i]);
307      while(500 > ((millis() - startTime)))  {
308        lightRow(WRONG.p[CROW]);
309      }    
310    }
311  }
312  noTone(pinSpeaker);
313  delay(1000);
314}
315
316void checkGame(){
317  byte note = gameCollection[currentMelody].notes[currentNote];
318  if (p.state != note) {
319    p.success = false;
320    currentNote = 0;
321    state  = resultMode;
322    delay(200);
323    noTone(pinSpeaker);  
324    delay(50);
325  } else if (p.state == note && currentNote == (gameCollection[currentMelody].len  - 1)) {
326    p.success = true;
327    currentNote = 0;
328    currentMelody =  (currentMelody + 1) % 4;
329    state = resultMode;
330    delay(200);
331    noTone(pinSpeaker);  
332    delay(50);
333  } else {
334    p.success = false;
335    currentNote++;
336  }
337  while (digitalRead(b.pin) == true) {
338    for (int i = 0; i < 8; i++){
339      lightRow(NOTES[p.state].p[CROW]);
340      tone(pinSpeaker, SCALE[p.state]);
341    }
342  }
343}
344
345bool buttonPressed(butt &button) { 
346  // Swith must  stay stable this long (in msec) to register
347  const long debounceTime = 50;   
348  // Default to no change until we find out otherwise
349  boolean result = false;  
350  // Get the current raw reading from the switch
351  int reading = digitalRead(button.pin);
352  if (reading != button.lastReading) {
353    button.lastChangeTime = millis();
354    button.lastReading = reading;
355  }
356  if ((millis() - button.lastChangeTime)  > debounceTime) {
357    button.buttonState = reading;
358    result = (button.buttonState  == 1);
359  }
360  return result;
361}
362
363void readAccel() {
364  int xRead  = 0, yRead = 0;
365  int  xAng = 0,  yAng = 0;
366  int sampleSize = 4;
367  for(int  i = 0; i < sampleSize ; i++) {
368    xRead += analogRead(pinX);
369    yRead +=  analogRead(pinY);
370    //zRead += analogRead(pinZ);
371  }
372  xRead = xRead  / sampleSize;
373  yRead = yRead / sampleSize;
374  //zRead = zRead / sampleSize;
375  xAng = map(xRead, xMinVal, xMaxVal, -90, 90);
376  yAng = map(yRead, yMinVal,  yMaxVal, -90, 90);
377  //zAng = map(zRead, zMinVal, zMaxVal, -90, 90);
378  //x  = RAD_TO_DEG * (atan2(-yAng, -zAng) + PI);
379  //y = RAD_TO_DEG * (atan2(-xAng,  -zAng) + PI);
380  angle = RAD_TO_DEG * (atan2(-yAng, -xAng) + PI);
381  //Serial.print("angle  = "); Serial.println(z);
382}
383
384void readPos(player &pl) {
385  // Player  position must stay stable this long (in msec) to register
386  const long debounceTime  = 20;
387  // Get the current raw reading from the accelerometer
388  byte reading  = 0;
389  if (158 < angle && angle <= 203) reading = 0;
390  if (203 < angle &&  angle <= 248) reading = 1;
391  if (248 < angle && angle <= 293) reading = 2;
392  if (293 < angle && angle <= 338) reading = 3;
393  if (338 < angle || angle <=  23) reading = 4;
394  if ( 23 < angle && angle <=  68) reading = 5;
395  if (  68 < angle && angle <= 113) reading = 6;
396  if (113 < angle && angle <= 158) reading  = 7;
397  if (reading != pl.lastReading) {
398    pl.lastChangeTime = millis();
399    pl.lastReading = reading;
400  }
401  if ((millis() - pl.lastChangeTime) > debounceTime)  {
402    pl.state = reading;
403  }
404}
405
406void lightRow(byte hex) {
407  digitalWrite(ROWS[CROW],  LOW);
408  for(byte i = 0; i < 8; i++) {
409    digitalWrite(COLS[i], (hex>>i) &  0x01);
410  }
411  for(byte i = 0; i < 8; i++) {
412    digitalWrite(COLS[i], LOW);
413  }
414  digitalWrite(ROWS[CROW], HIGH);
415  CROW = (CROW + 1) % SIZE;
416}
417
418void  lightRowDim(byte hex) {
419  digitalWrite(ROWS[CROW], LOW);
420  for(byte i = 0;  i < 8; i++) {
421    digitalWrite(COLS[i], (hex>>i) & 0x01);
422  }
423  for(byte  i = 0; i < 8; i++) {
424    digitalWrite(COLS[i], LOW);
425  }
426  digitalWrite(ROWS[CROW],  HIGH);
427  delay(1);
428  CROW = (CROW + 1) % SIZE;
429}

// GRAVITY SIMON GAME
// This program will execute a remake version  of Simon Game controlled with an
// accelerometer sensor and will display and  play sounds accordingly to the 
// orientation of the sensor.

// Created  October 16, 2020
// by Policarpo Baquera
// Carnegie Mellon University 
//  More info at: https://create.arduino.cc/projecthub/plcrpbqr/gravity-simon-game-df5d00

/*  //////////////////////////////////// ADXL335 SETUP ////////////////////////////////////  */
#include "Arduino.h"
#include <math.h>
const byte pinX = A7;
const  byte pinY = A6;
const int xMinVal = 289; const int yMinVal = 279; //const int  zMinVal = 291;
const int xMaxVal = 424; const int yMaxVal = 416; //const int  zMaxVal = 424;
int angle = 0;

/* ////////////////////////////////////////  BUTTON /////////////////////////////////////// */
const byte pinButton = 13;

/*  Struct to track and debounce the state of a push button switch */
typedef struct  buttonTracker {
  int  lastReading;       // last raw value read
  long lastChangeTime;    // last time the raw value changed
  byte pin;               // the pin this  is tracking changes on
  byte buttonState;       // debounced state of the button
}  butt;

butt b;

/* /////////////////////////////////////// SPEAKER ///////////////////////////////////////  */
#include"pitches.h"
const byte pinSpeaker = 10;
const int SCALE[8]  = {NOTE_C3, NOTE_D3, NOTE_E3, NOTE_F3, NOTE_G3, NOTE_A3, NOTE_B3, NOTE_C4};
const  int readyMelody[4]   = {NOTE_C3, NOTE_C3, NOTE_C3, NOTE_C4};
const int correctMelody[2]  = {NOTE_B3, NOTE_C4};
const int wrongMelody[4]   = {NOTE_D3, NOTE_CS3};

/*  /////////////////////////////////////// DISPLAY ///////////////////////////////////////  */
/* LED Matrix pin values */
const byte pin01 = 6;
const byte pin02 =  7;
const byte pin03 = 8;
const byte pin04 = 9;
const byte pin05 = 2;
const  byte pin06 = 3;
const byte pin07 = 4;
const byte pin08 = 5;
const byte  pin09 = A0;
const byte pin10 = A1;
const byte pin11 = A2;
const byte pin12  = A3;
const byte pin13 = 12;
const byte pin14 = 11;
const byte pin15 =  A4;
const byte pin16 = A5;

/* Define cols and rows pin values for LED  Matrix */
#define SIZE 8
const byte COLS[8] = {pin05, pin02, pin07, pin01,  pin12, pin08, pin14, pin09};
const byte ROWS[8] = {pin13, pin03, pin04, pin10,  pin06, pin11, pin15, pin16};
      byte CROW    =  0;

/* Struct for animation  frames */
typedef struct {
  byte *p;       // Hex Pattern
  int t;         //  Animation time
} pattern;

/* Patterns */
byte ARRp[8]     = {0x18,  0x3C, 0x7E, 0xDB, 0x18, 0x18, 0x18, 0x18};
byte GOp[8]      = {0x00, 0x66, 0x99,  0xB9, 0x89, 0x99, 0x66, 0x00};
byte THREEp[8]   = {0x00, 0x38, 0x04, 0x04, 0x38,  0x04, 0x38, 0x00};
byte TWOp[8]     = {0x00, 0x3C, 0x10, 0x08, 0x04, 0x24, 0x18,  0x00};
byte ONEp[8]     = {0x00, 0x08, 0x08, 0x08, 0x28, 0x18, 0x08, 0x00};
byte  CORRECTp[8] = {0x00, 0x00, 0x10, 0x28, 0x44, 0x02, 0x00, 0x00};
byte WRONGp[8]   = {0x00, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x00};
byte C1p[8]      = {0xFF,  0xFF, 0xFF, 0x81, 0x81, 0x81, 0x81, 0xFF};
byte D1p[8]      = {0xFF, 0x8F, 0x87,  0x83, 0x81, 0x81, 0x81, 0xFF};
byte E1p[8]      = {0xFF, 0x87, 0x87, 0x87, 0x87,  0x87, 0x87, 0xFF};
byte F1p[8]      = {0xFF, 0x81, 0x81, 0x81, 0x83, 0x87, 0x8F,  0xFF};
byte G1p[8]      = {0xFF, 0x81, 0x81, 0x81, 0x81, 0xFF, 0xFF, 0xFF};
byte  A1p[8]      = {0xFF, 0x81, 0x81, 0x81, 0xC1, 0xE1, 0xF1, 0xFF};
byte B1p[8]      =  {0xFF, 0xE1, 0xE1, 0xE1, 0xE1, 0xE1, 0xE1, 0xFF};
byte C2p[8]      = {0xFF, 0xF1,  0xE1, 0xC1, 0x81, 0x81, 0x81, 0xFF};

/* Frames and animations */
pattern  ARR1;        // ARROW 0.8s frame 
pattern ARR2;        // ARROW 0.2s frame 
pattern  ARR[2];      // ARROW 1.0s animation
pattern GO;          // GO    1s frame
pattern  THREE;       // THREE 1s frame 
pattern TWO;         // TWO   1s frame 
pattern  ONE;         // ONE   1s frame 
pattern COUNT[4];    // COUNT 4s animation
pattern  CORRECT;     // CORRECT 2s frame 
pattern WRONG;       // WRONG   2s frame 
pattern  noteC1;
pattern noteD1;
pattern noteE1;
pattern noteF1;
pattern noteG1;
pattern  noteA1;
pattern noteB1;
pattern noteC2; 
pattern NOTES[8];

/* ////////////////////////////////////////  GAME ///////////////////////////////////////// */
/* Game state */
enum modes{introMode,  readyMode, melodyMode, gameMode, resultMode};
enum modes state;
byte currentMelody;
int  currentNote;

/* Game rounds */
typedef struct{
  byte *notes;
  int *duration;
  int len;
} game;

game game1;
game game2;
game  game3;
game game4;
game gameCollection[4];

/* Game melodies */
byte  notes1[4] = {   0,    0,    4,    2};
int  durat1[4] = {1000, 1000, 1000, 1000};
byte  notes2[5] = {   4,    1,    2,    5,    4};
int  durat2[5] = {1500,  500, 1000,  1000, 2000};
byte notes3[7] = {   1,    3,    1,    2,    0,    4,    7};
int  durat3[7] = { 800,  800,  800,  800,  800,  800,  800};
byte notes4[9] = {   0,    7,    6,    5,    4,    1,    2,    3,    4};
int  durat4[9] = {1000,  1000, 1500,  500,  500,  500,  500,  500, 1000};

/* Player status */
typedef  struct playerTracker {
  byte lastReading;      // last raw value read
  long  lastChangeTime;   // last time the raw value changed
  byte state;            //  debounced state of the button
  bool success;
} player;

player p;

/*  //////////////////////////////////////// SETUP ////////////////////////////////////////  */
void setup() {
  // Button
  initButton(b, pinButton);
  // Accelerometer
  pinMode(pinX, INPUT);
  pinMode(pinY, INPUT);
  // Matrix setup and patterns
  initMatrix();
  initPatterns();
  initGame(p);
}

void initButton(butt  &button, int pinButton) {  
  pinMode(pinButton, INPUT);
  button.lastReading  = digitalRead(pinButton);
  button.lastChangeTime = millis();
  button.pin  = pinButton;
  button.buttonState = button.lastReading;
}

void initMatrix()  {
  for(int i = 0; i < 8; i++) {
    pinMode(COLS[i], OUTPUT);
    pinMode(ROWS[i],  OUTPUT);
  }
  for(int i = 0; i < SIZE; i++) {
    digitalWrite(COLS[i],  LOW);
  }
  for(int i = 0; i < 8; i++) {
    digitalWrite(ROWS[i], HIGH);
  }
}

void initPatterns() {
  ARR1.p = ARRp; ARR1.t = 1000;
  ARR2.p  = ARRp; ARR2.t = 500;
  ARR[0] = ARR1; ARR[1] = ARR2;
  GO.p = GOp; GO.t =  1000;
  THREE.p = THREEp; THREE.t = 1000;
  TWO.p = TWOp; TWO.t = 1000;
  ONE.p = ONEp; ONE.t = 1000;
  COUNT[0] = THREE; COUNT[1] = TWO; COUNT[2] =  ONE; COUNT[3] = GO;
  CORRECT.p = CORRECTp; CORRECT.t = 2000;
  WRONG.p =  WRONGp; WRONG.t = 2000;
  noteC1.p = C1p;
  noteD1.p = D1p;
  noteE1.p  = E1p;
  noteF1.p = F1p;
  noteG1.p = G1p;
  noteA1.p = A1p;
  noteB1.p  = B1p;
  noteC2.p = C2p;
  NOTES[0] = noteC1; NOTES[1] = noteD1; NOTES[2]  = noteE1; NOTES[3] = noteF1;
  NOTES[4] = noteG1; NOTES[5] = noteA1; NOTES[6]  = noteB1; NOTES[7] = noteC2;
}

void initGame(player &pl) {
  // Initialize  the game
  state = introMode;
  currentMelody = 0;
  currentNote = 0;
  // Initialize player's status
  pl.lastReading = 0;
  pl.lastChangeTime  = millis();
  pl.state = pl.lastReading; 
  pl.success = false;       // false  means the user has failed, true means he has succeed
  // Initialize game rounds  and assign melodies
  game1.notes = notes1; game1.duration = durat1; game1.len  = 4;
  game2.notes = notes2; game2.duration = durat2; game2.len = 5;
  game3.notes  = notes3; game3.duration = durat3; game3.len = 7;
  game4.notes = notes4; game4.duration  = durat4; game4.len = 9;
  gameCollection[0] = game1; 
  gameCollection[1]  = game2;
  gameCollection[2] = game3;
  gameCollection[3] = game4;
}

/*  ///////////////////////////////////////// LOOP /////////////////////////////////////////  */
void loop() {
  if (state == introMode){
    introScreen();
    if  (buttonPressed(b) == true) state = readyMode;
  }
  if (state == readyMode)  {
    readyScreen();
    state = melodyMode;
  }
  if (state == melodyMode)  {
    melodyScreen();
    state = gameMode;
  }
  if (state == gameMode)  {
    gameScreen();
  }
  if (state == resultMode) {
    resultScreen();
    state = readyMode;
  }
}

void introScreen() {
  for (byte i  = 0; i < 2; i++){
    unsigned long startTime = millis();
    while(ARR[i].t  > ((millis() - startTime))) {
      if (i == 0) lightRow(ARR[i].p[CROW]);
      else lightRowDim(ARR[i].p[CROW]);
    }
  }
}

void readyScreen()  {
  for (byte i = 0; i < 4; i++){
    tone(pinSpeaker, readyMelody[i]);
    unsigned long startTime = millis();
    while(COUNT[i].t > ((millis() - startTime)))  {
      if ((COUNT[i].t - 400) < ((millis() - startTime))) noTone(pinSpeaker);
      lightRow(COUNT[i].p[CROW]);
    }
  }
}

void melodyScreen()  {
  int   lenM       = gameCollection[currentMelody].len;
  byte* notesM     =  gameCollection[currentMelody].notes;
  int*  durationM  = gameCollection[currentMelody].duration;
  for (byte i = 0; i < lenM; i++){
    tone(pinSpeaker, SCALE[notesM[i]]);
    unsigned long startTime = millis();
    while(durationM[i] > ((millis() -  startTime))) {
      if ((durationM[i]- 100) < ((millis() - startTime))) noTone(pinSpeaker);
      lightRow(NOTES[notesM[i]].p[CROW]);
    }
  }
}

void gameScreen()  {
  readAccel();
  readPos(p);
  if (buttonPressed(b) == false) {
    noTone(pinSpeaker);
    for (int i = 0; i < 8; i++){
      lightRowDim(NOTES[p.state].p[CROW]);  
    }
  } else checkGame();
}

void resultScreen() {
  for (byte  i = 0; i < 2; i++){
    unsigned long startTime = millis();
    if (p.success)  {
      tone(pinSpeaker, correctMelody[i]);
      while(500 > ((millis() -  startTime))) {
        lightRow(CORRECT.p[CROW]);
      }
    } else {
      tone(pinSpeaker, wrongMelody[i]);
      while(500 > ((millis() - startTime)))  {
        lightRow(WRONG.p[CROW]);
      }    
    }
  }
  noTone(pinSpeaker);
  delay(1000);
}

void checkGame(){
  byte note = gameCollection[currentMelody].notes[currentNote];
  if (p.state != note) {
    p.success = false;
    currentNote = 0;
    state  = resultMode;
    delay(200);
    noTone(pinSpeaker);  
    delay(50);
  } else if (p.state == note && currentNote == (gameCollection[currentMelody].len  - 1)) {
    p.success = true;
    currentNote = 0;
    currentMelody =  (currentMelody + 1) % 4;
    state = resultMode;
    delay(200);
    noTone(pinSpeaker);  
    delay(50);
  } else {
    p.success = false;
    currentNote++;
  }
  while (digitalRead(b.pin) == true) {
    for (int i = 0; i < 8; i++){
      lightRow(NOTES[p.state].p[CROW]);
      tone(pinSpeaker, SCALE[p.state]);
    }
  }
}

bool buttonPressed(butt &button) { 
  // Swith must  stay stable this long (in msec) to register
  const long debounceTime = 50;   
  // Default to no change until we find out otherwise
  boolean result = false;  
  // Get the current raw reading from the switch
  int reading = digitalRead(button.pin);
  if (reading != button.lastReading) {
    button.lastChangeTime = millis();
    button.lastReading = reading;
  }
  if ((millis() - button.lastChangeTime)  > debounceTime) {
    button.buttonState = reading;
    result = (button.buttonState  == 1);
  }
  return result;
}

void readAccel() {
  int xRead  = 0, yRead = 0;
  int  xAng = 0,  yAng = 0;
  int sampleSize = 4;
  for(int  i = 0; i < sampleSize ; i++) {
    xRead += analogRead(pinX);
    yRead +=  analogRead(pinY);
    //zRead += analogRead(pinZ);
  }
  xRead = xRead  / sampleSize;
  yRead = yRead / sampleSize;
  //zRead = zRead / sampleSize;
  xAng = map(xRead, xMinVal, xMaxVal, -90, 90);
  yAng = map(yRead, yMinVal,  yMaxVal, -90, 90);
  //zAng = map(zRead, zMinVal, zMaxVal, -90, 90);
  //x  = RAD_TO_DEG * (atan2(-yAng, -zAng) + PI);
  //y = RAD_TO_DEG * (atan2(-xAng,  -zAng) + PI);
  angle = RAD_TO_DEG * (atan2(-yAng, -xAng) + PI);
  //Serial.print("angle  = "); Serial.println(z);
}

void readPos(player &pl) {
  // Player  position must stay stable this long (in msec) to register
  const long debounceTime  = 20;
  // Get the current raw reading from the accelerometer
  byte reading  = 0;
  if (158 < angle && angle <= 203) reading = 0;
  if (203 < angle &&  angle <= 248) reading = 1;
  if (248 < angle && angle <= 293) reading = 2;
  if (293 < angle && angle <= 338) reading = 3;
  if (338 < angle || angle <=  23) reading = 4;
  if ( 23 < angle && angle <=  68) reading = 5;
  if (  68 < angle && angle <= 113) reading = 6;
  if (113 < angle && angle <= 158) reading  = 7;
  if (reading != pl.lastReading) {
    pl.lastChangeTime = millis();
    pl.lastReading = reading;
  }
  if ((millis() - pl.lastChangeTime) > debounceTime)  {
    pl.state = reading;
  }
}

void lightRow(byte hex) {
  digitalWrite(ROWS[CROW],  LOW);
  for(byte i = 0; i < 8; i++) {
    digitalWrite(COLS[i], (hex>>i) &  0x01);
  }
  for(byte i = 0; i < 8; i++) {
    digitalWrite(COLS[i], LOW);
  }
  digitalWrite(ROWS[CROW], HIGH);
  CROW = (CROW + 1) % SIZE;
}

void  lightRowDim(byte hex) {
  digitalWrite(ROWS[CROW], LOW);
  for(byte i = 0;  i < 8; i++) {
    digitalWrite(COLS[i], (hex>>i) & 0x01);
  }
  for(byte  i = 0; i < 8; i++) {
    digitalWrite(COLS[i], LOW);
  }
  digitalWrite(ROWS[CROW],  HIGH);
  delay(1);
  CROW = (CROW + 1) % SIZE;
}

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