MAX72XX LED matrix display asteroids game

a simple starship game using the MAX72XX LED-Matrix

Feb 4, 2018

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games

Components and supplies

Buzzer

Pushbutton switch 12mm

Breadboard (generic)

MAXREFDES99# MAX7219 Display Driver Shield

Arduino Mega 2560

Project description

Code

asteroids game code

arduino

1/********************************************************
2 * This is  a simple game using the MAX72XX LED-Matrix.
3 * You are a star ship and you have  to avoid contact with 
4 * the asteroids falling down.
5 * 
6 *  (c) 2018  by Joshua Weßner 
7 * 
8 * 
9 * 
10 *******************************************************/
11
12
13//LedControl  by Eberhard Fahle
14// see: http://wayoda.github.io/LedControl/
15#include "LedControl.h"
16
17/*
18  Now we need a LedControl to work with.
19 ***** These pin numbers will probably  not work with your hardware *****
20 pin 12 is connected to the DataIn 
21 pin  11 is connected to the CLK 
22 pin 10 is connected to LOAD 
23 We have only a  single MAX72XX.
24 */
25LedControl lc=LedControl(12,11,10,1);
26
27
28/**************************************************************
29  * Global Variables
30 */
31 
32/* delay between updates of the display */
33unsigned  long delaytime=1000;
34
35/* to Display the score */
36String scoreString;
37int  score;
38int hundreds;
39String scoreStr;
40String scoreArr[] = {"" ,"" ,""  };
41
42/* micro switches for control */
43int pinLeft = 2;
44int pinRight =  3;
45volatile unsigned long buttonPressed;
46int buttonDelay = 150;  //handle  contact bounce
47
48volatile bool gameOver = false;
49
50/* "rythm" of the  game, im milliseconds */
51int tick;
52int tickCounter = 1;
53
54/* timestamp  */
55unsigned long now;
56
57/* display */
58int ship; /* Initial ship position  */
59int columns[] = {0,0,0,0,0,0,0,0}; // 8 columns, every int is row 1-8.
60int  randomInt;
61
62/**************************************************************
63  * setup
64 */
65
66void setup() {
67  /* Initializing */
68  gameOver = false;
69  hundreds = 0;
70  scoreArr[0] = "";
71  scoreArr[1] = "";
72  scoreArr[2]  = "";
73  score = 0;
74  tick = 300;
75  tickCounter = 1;
76  ship = 3;
77  now = millis();
78  buttonPressed = millis();
79  randomSeed(analogRead(15));  // better random numbers
80
81  for(int i = 0; i<8; i++)
82    columns[i] = 0;
83  
84  // Debugging
85  // Serial.begin(9600);
86  // Serial.print(columns[0]);
87  
88  /*
89   The MAX72XX is in power-saving mode on startup,
90   we have to  do a wakeup call
91   */
92  lc.shutdown(0,false);
93  /* Set the brightness  to a medium values */
94  lc.setIntensity(0,1);
95  /* and clear the display */
96  lc.clearDisplay(0);
97
98  pinMode(pinLeft, INPUT_PULLUP);
99  pinMode(pinRight,  INPUT_PULLUP);
100
101  /* attach button press to interrupts */
102  attachInterrupt(digitalPinToInterrupt(pinLeft),  left, FALLING);
103  attachInterrupt(digitalPinToInterrupt(pinRight), right, FALLING);
104  
105}
106
107/**************************************************************
108  * handle left button press
109 */
110void left()
111{
112  if(millis() - buttonPressed  > buttonDelay) // handle switch contact bounce
113  {
114        if(ship != 0)
115        ship--;
116      else
117        ship = 7;
118    
119      lc.clearDisplay(0);
120      buttonPressed = millis();
121  }
122
123  // after game over, button press  will restart game
124  if(gameOver == true){
125  gameOver = false;
126  setup();
127  }
128}
129
130/**************************************************************
131  *  handle right button press
132 */
133void right()
134{
135    if(millis() - buttonPressed  > buttonDelay) // handle switch contact bounce
136    {
137      if(ship != 7)
138        ship++;
139      else
140        ship = 0;
141      
142      lc.clearDisplay(0);
143       buttonPressed = millis();
144    }
145
146  // after game over, button press  will restart game
147  if(gameOver == true){
148  gameOver = false;
149  setup();
150  }   
151}
152
153
154/**************************************************************
155  *  loop
156 */
157void loop() { 
158
159  if(millis() - now > tick){  //do every  tick
160
161    // score is: how many ticks you survived
162    score++;
163  
164    now = millis();
165
166    if(tickCounter == 1){ //every 4th tick
167
168       //  make game faster over time
169       tick = tick/1.02;
170
171      // randomly  choose column
172      randomInt = random(0, 8);
173
174      // if no asteroid  exists in column, create one in row 1.
175      if(columns[randomInt] == 0){  
176        columns[randomInt] = 1;
177      }
178    }
179
180    if(tickCounter !=  4)
181      tickCounter++;
182     else
183      tickCounter = 1;
184
185    //  do for every column
186    for(int i = 0; i<8; i++){
187      
188      if(columns[i]  == 10) // delete asteroids when out of display
189        columns[i] = 0;
190        
191      if(columns[i] != 0) // make asteroids fall down
192        columns[i]++;
193    }
194
195    lc.clearDisplay(0);
196  }
197
198
199  /* write to display */
200
201  // ship
202  lc.setLed(0, 7, ship, true);
203
204  // asteroids
205  for(int i  = 0; i<8; i++){
206    if(columns[i] > 0)
207      lc.setLed(0, columns[i]-2, i,  true);
208      lc.setLed(0, columns[i]-3, i, true);
209  }
210
211  // detect collision  of ship with asteroid
212  if(columns[ship] == 10 or columns[ship] == 9){
213    lc.clearDisplay(0);
214
215    // animate explosion
216    for(int i = 0; i<4; i++){
217      lc.setLed(0,7,ship+i,true);
218      lc.setLed(0,7,ship-i,true);
219      lc.setLed(0,7-i,ship+i,true);
220      lc.setLed(0,7-i,ship-i,true);
221      lc.setLed(0,7-1.5*i,ship,true);
222
223      // explosion sound
224      unsigned  long time = millis();
225      int randomSound=1000;
226      while(millis() - time  <= 250)  {  
227        randomSound--;
228        tone(9, random(randomSound, 1000));   // change the parameters of random() for different sound
229      }
230
231      lc.clearDisplay(0);
232      noTone(9);
233    }
234
235    delay(500);
236
237    /* display score */
238   
239    scoreStr = String(score);
240
241    // get single digits from score  int
242    scoreArr[0] = scoreStr.charAt(0);
243    scoreArr[1] = scoreStr.charAt(1);
244    scoreArr[2] = scoreStr.charAt(2);
245
246    // matrix can only display up to  2 digits (up to 99)
247    if(score < 100){
248        for(int i = 0; i<2; i++){
249          if(scoreArr[i] == "0")
250            draw0(1+i*4);
251          if(scoreArr[i]  == "1")
252            draw1(1+i*4);
253          if(scoreArr[i] == "2")
254            draw2(1+i*4);
255          if(scoreArr[i] == "3")
256            draw3(1+i*4);
257          if(scoreArr[i] == "4")
258            draw4(1+i*4);
259          if(scoreArr[i]  == "5")
260            draw5(1+i*4);
261          if(scoreArr[i] == "6")
262            draw6(1+i*4);
263          if(scoreArr[i] == "7")
264            draw7(1+i*4);
265          if(scoreArr[i] == "8")
266            draw8(1+i*4);
267          if(scoreArr[i]  == "9")
268            draw9(1+i*4);
269        }
270          
271        }
272        // if score is > 100, display only last two digits of score
273    else{
274
275        for(int i = 1; i<3; i++){
276          if(scoreArr[i] == "0")
277            draw0(1+(i-1)*4);
278          if(scoreArr[i] == "1")
279            draw1(1+(i-1)*4);
280          if(scoreArr[i]  == "2")
281            draw2(1+(i-1)*4);
282          if(scoreArr[i] == "3")
283            draw3(1+(i-1)*4);
284          if(scoreArr[i] == "4")
285            draw4(1+(i-1)*4);
286          if(scoreArr[i] == "5")
287            draw5(1+(i-1)*4);
288          if(scoreArr[i]  == "6")
289            draw6(1+(i-1)*4);
290          if(scoreArr[i] == "7")
291            draw7(1+(i-1)*4);
292          if(scoreArr[i] == "8")
293            draw8(1+(i-1)*4);
294          if(scoreArr[i] == "9")
295            draw9(1+(i-1)*4);
296        }
297        // first digit of score ("hundreds") is displayed as dots: One dot for  every hundred.
298        for(int i = 1; i<10; i++){
299          if(scoreArr[0]  == String(i))
300            hundreds = i;
301        }
302        for(int i = 1;  i <= hundreds; i++){
303          lc.setLed(0,0,i-1,true);
304          lc.setLed(0,1,i-1,true);
305          delay(200);          
306        }
307        
308    }
309   gameOver  = true;
310    while(gameOver == true){
311          // do nothing but wait for  button press
312      }
313  }
314    
315}
316
317/////////////////////////////  Draw score digits /////////////////////////////////////////
318void draw1(int position){
319
320    lc.setColumn(0,0+position,B00001000);
321    lc.setColumn(0,1+position,B00011111);
322  
323}
324
325void draw2(int position){
326
327    lc.setColumn(0,0+position,B00010111);
328    lc.setColumn(0,1+position,B00010101);
329    lc.setColumn(0,2+position,B00011101);  
330}
331void draw3(int position){
332
333    lc.setColumn(0,0+position,B00010001);
334    lc.setColumn(0,1+position,B00010101);
335    lc.setColumn(0,2+position,B00011111);  
336}
337void draw4(int position){
338
339    lc.setColumn(0,0+position,B00011100);
340    lc.setColumn(0,1+position,B00000100);
341    lc.setColumn(0,2+position,B00011111);  
342}
343void draw5(int position){
344
345    lc.setColumn(0,0+position,B00011101);
346    lc.setColumn(0,1+position,B00010101);
347    lc.setColumn(0,2+position,B00010111);  
348}
349void draw6(int position){
350
351    lc.setColumn(0,0+position,B00011111);
352    lc.setColumn(0,1+position,B00010101);
353    lc.setColumn(0,2+position,B00010111);  
354}
355void draw7(int position){
356
357    lc.setColumn(0,0+position,B00010000);
358    lc.setColumn(0,1+position,B00010011);
359    lc.setColumn(0,2+position,B00011100);  
360}
361void draw8(int position){
362
363    lc.setColumn(0,0+position,B00011111);
364    lc.setColumn(0,1+position,B00010101);
365    lc.setColumn(0,2+position,B00011111);  
366}
367void draw9(int position){
368
369    lc.setColumn(0,0+position,B00011101);
370    lc.setColumn(0,1+position,B00010101);
371    lc.setColumn(0,2+position,B00011111);  
372}
373
374void draw0(int position){
375
376    lc.setColumn(0,0+position,B00011111);
377    lc.setColumn(0,1+position,B00010001);
378    lc.setColumn(0,2+position,B00011111);  
379}
380
381

/********************************************************
 * This is  a simple game using the MAX72XX LED-Matrix.
 * You are a star ship and you have  to avoid contact with 
 * the asteroids falling down.
 * 
 *  (c) 2018  by Joshua Weßner 
 * 
 * 
 * 
 *******************************************************/


//LedControl  by Eberhard Fahle
// see: http://wayoda.github.io/LedControl/
#include "LedControl.h"

/*
  Now we need a LedControl to work with.
 ***** These pin numbers will probably  not work with your hardware *****
 pin 12 is connected to the DataIn 
 pin  11 is connected to the CLK 
 pin 10 is connected to LOAD 
 We have only a  single MAX72XX.
 */
LedControl lc=LedControl(12,11,10,1);


/**************************************************************
  * Global Variables
 */
 
/* delay between updates of the display */
unsigned  long delaytime=1000;

/* to Display the score */
String scoreString;
int  score;
int hundreds;
String scoreStr;
String scoreArr[] = {"" ,"" ,""  };

/* micro switches for control */
int pinLeft = 2;
int pinRight =  3;
volatile unsigned long buttonPressed;
int buttonDelay = 150;  //handle  contact bounce

volatile bool gameOver = false;

/* "rythm" of the  game, im milliseconds */
int tick;
int tickCounter = 1;

/* timestamp  */
unsigned long now;

/* display */
int ship; /* Initial ship position  */
int columns[] = {0,0,0,0,0,0,0,0}; // 8 columns, every int is row 1-8.
int  randomInt;

/**************************************************************
  * setup
 */

void setup() {
  /* Initializing */
  gameOver = false;
  hundreds = 0;
  scoreArr[0] = "";
  scoreArr[1] = "";
  scoreArr[2]  = "";
  score = 0;
  tick = 300;
  tickCounter = 1;
  ship = 3;
  now = millis();
  buttonPressed = millis();
  randomSeed(analogRead(15));  // better random numbers

  for(int i = 0; i<8; i++)
    columns[i] = 0;
  
  // Debugging
  // Serial.begin(9600);
  // Serial.print(columns[0]);
  
  /*
   The MAX72XX is in power-saving mode on startup,
   we have to  do a wakeup call
   */
  lc.shutdown(0,false);
  /* Set the brightness  to a medium values */
  lc.setIntensity(0,1);
  /* and clear the display */
  lc.clearDisplay(0);

  pinMode(pinLeft, INPUT_PULLUP);
  pinMode(pinRight,  INPUT_PULLUP);

  /* attach button press to interrupts */
  attachInterrupt(digitalPinToInterrupt(pinLeft),  left, FALLING);
  attachInterrupt(digitalPinToInterrupt(pinRight), right, FALLING);
  
}

/**************************************************************
  * handle left button press
 */
void left()
{
  if(millis() - buttonPressed  > buttonDelay) // handle switch contact bounce
  {
        if(ship != 0)
        ship--;
      else
        ship = 7;
    
      lc.clearDisplay(0);
      buttonPressed = millis();
  }

  // after game over, button press  will restart game
  if(gameOver == true){
  gameOver = false;
  setup();
  }
}

/**************************************************************
  *  handle right button press
 */
void right()
{
    if(millis() - buttonPressed  > buttonDelay) // handle switch contact bounce
    {
      if(ship != 7)
        ship++;
      else
        ship = 0;
      
      lc.clearDisplay(0);
       buttonPressed = millis();
    }

  // after game over, button press  will restart game
  if(gameOver == true){
  gameOver = false;
  setup();
  }   
}


/**************************************************************
  *  loop
 */
void loop() { 

  if(millis() - now > tick){  //do every  tick

    // score is: how many ticks you survived
    score++;
  
    now = millis();

    if(tickCounter == 1){ //every 4th tick

       //  make game faster over time
       tick = tick/1.02;

      // randomly  choose column
      randomInt = random(0, 8);

      // if no asteroid  exists in column, create one in row 1.
      if(columns[randomInt] == 0){  
        columns[randomInt] = 1;
      }
    }

    if(tickCounter !=  4)
      tickCounter++;
     else
      tickCounter = 1;

    //  do for every column
    for(int i = 0; i<8; i++){
      
      if(columns[i]  == 10) // delete asteroids when out of display
        columns[i] = 0;
        
      if(columns[i] != 0) // make asteroids fall down
        columns[i]++;
    }

    lc.clearDisplay(0);
  }


  /* write to display */

  // ship
  lc.setLed(0, 7, ship, true);

  // asteroids
  for(int i  = 0; i<8; i++){
    if(columns[i] > 0)
      lc.setLed(0, columns[i]-2, i,  true);
      lc.setLed(0, columns[i]-3, i, true);
  }

  // detect collision  of ship with asteroid
  if(columns[ship] == 10 or columns[ship] == 9){
    lc.clearDisplay(0);

    // animate explosion
    for(int i = 0; i<4; i++){
      lc.setLed(0,7,ship+i,true);
      lc.setLed(0,7,ship-i,true);
      lc.setLed(0,7-i,ship+i,true);
      lc.setLed(0,7-i,ship-i,true);
      lc.setLed(0,7-1.5*i,ship,true);

      // explosion sound
      unsigned  long time = millis();
      int randomSound=1000;
      while(millis() - time  <= 250)  {  
        randomSound--;
        tone(9, random(randomSound, 1000));   // change the parameters of random() for different sound
      }

      lc.clearDisplay(0);
      noTone(9);
    }

    delay(500);

    /* display score */
   
    scoreStr = String(score);

    // get single digits from score  int
    scoreArr[0] = scoreStr.charAt(0);
    scoreArr[1] = scoreStr.charAt(1);
    scoreArr[2] = scoreStr.charAt(2);

    // matrix can only display up to  2 digits (up to 99)
    if(score < 100){
        for(int i = 0; i<2; i++){
          if(scoreArr[i] == "0")
            draw0(1+i*4);
          if(scoreArr[i]  == "1")
            draw1(1+i*4);
          if(scoreArr[i] == "2")
            draw2(1+i*4);
          if(scoreArr[i] == "3")
            draw3(1+i*4);
          if(scoreArr[i] == "4")
            draw4(1+i*4);
          if(scoreArr[i]  == "5")
            draw5(1+i*4);
          if(scoreArr[i] == "6")
            draw6(1+i*4);
          if(scoreArr[i] == "7")
            draw7(1+i*4);
          if(scoreArr[i] == "8")
            draw8(1+i*4);
          if(scoreArr[i]  == "9")
            draw9(1+i*4);
        }
          
        }
        // if score is > 100, display only last two digits of score
    else{

        for(int i = 1; i<3; i++){
          if(scoreArr[i] == "0")
            draw0(1+(i-1)*4);
          if(scoreArr[i] == "1")
            draw1(1+(i-1)*4);
          if(scoreArr[i]  == "2")
            draw2(1+(i-1)*4);
          if(scoreArr[i] == "3")
            draw3(1+(i-1)*4);
          if(scoreArr[i] == "4")
            draw4(1+(i-1)*4);
          if(scoreArr[i] == "5")
            draw5(1+(i-1)*4);
          if(scoreArr[i]  == "6")
            draw6(1+(i-1)*4);
          if(scoreArr[i] == "7")
            draw7(1+(i-1)*4);
          if(scoreArr[i] == "8")
            draw8(1+(i-1)*4);
          if(scoreArr[i] == "9")
            draw9(1+(i-1)*4);
        }
        // first digit of score ("hundreds") is displayed as dots: One dot for  every hundred.
        for(int i = 1; i<10; i++){
          if(scoreArr[0]  == String(i))
            hundreds = i;
        }
        for(int i = 1;  i <= hundreds; i++){
          lc.setLed(0,0,i-1,true);
          lc.setLed(0,1,i-1,true);
          delay(200);          
        }
        
    }
   gameOver  = true;
    while(gameOver == true){
          // do nothing but wait for  button press
      }
  }
    
}

/////////////////////////////  Draw score digits /////////////////////////////////////////
void draw1(int position){

    lc.setColumn(0,0+position,B00001000);
    lc.setColumn(0,1+position,B00011111);
  
}

void draw2(int position){

    lc.setColumn(0,0+position,B00010111);
    lc.setColumn(0,1+position,B00010101);
    lc.setColumn(0,2+position,B00011101);  
}
void draw3(int position){

    lc.setColumn(0,0+position,B00010001);
    lc.setColumn(0,1+position,B00010101);
    lc.setColumn(0,2+position,B00011111);  
}
void draw4(int position){

    lc.setColumn(0,0+position,B00011100);
    lc.setColumn(0,1+position,B00000100);
    lc.setColumn(0,2+position,B00011111);  
}
void draw5(int position){

    lc.setColumn(0,0+position,B00011101);
    lc.setColumn(0,1+position,B00010101);
    lc.setColumn(0,2+position,B00010111);  
}
void draw6(int position){

    lc.setColumn(0,0+position,B00011111);
    lc.setColumn(0,1+position,B00010101);
    lc.setColumn(0,2+position,B00010111);  
}
void draw7(int position){

    lc.setColumn(0,0+position,B00010000);
    lc.setColumn(0,1+position,B00010011);
    lc.setColumn(0,2+position,B00011100);  
}
void draw8(int position){

    lc.setColumn(0,0+position,B00011111);
    lc.setColumn(0,1+position,B00010101);
    lc.setColumn(0,2+position,B00011111);  
}
void draw9(int position){

    lc.setColumn(0,0+position,B00011101);
    lc.setColumn(0,1+position,B00010101);
    lc.setColumn(0,2+position,B00011111);  
}

void draw0(int position){

    lc.setColumn(0,0+position,B00011111);
    lc.setColumn(0,1+position,B00010001);
    lc.setColumn(0,2+position,B00011111);  
}

Downloadable files

circuit diagram for the asteroids game

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