Diff: main.cpp

Revision:

7:2942e97924f0

Parent:

6:1de103a19681

Child:

8:b857684a3983

diff -r 1de103a19681 -r 2942e97924f0 main.cpp
--- a/main.cpp	Mon Apr 27 20:27:23 2015 +0000
+++ b/main.cpp	Thu Apr 30 15:39:20 2015 +0000
@@ -17,7 +17,7 @@
     HARD,
 };
 
-Difficulty currentDifficulty=EASY;
+Difficulty currentDifficulty=EASY;// initialise to easy mode
 
 
 // struct for Joystick
@@ -33,7 +33,7 @@
 // create struct variable
 Joystick joystick;
 
-DirectionName previousDirection =RIGHT;
+DirectionName previousDirection =RIGHT;//initial direction =Right
 
 // read default positions of the joystick to calibrate later readings
 void calibrateJoystick()
@@ -74,8 +74,8 @@
 
 void displaySplash()
 {
-    // these are default settings so not strictly needed
-    lcd.inverseMode();      // normal colour mode
+ 
+    lcd.inverseMode();      // change colour mode
     lcd.setBrightness(0.5); // put LED backlight on 50%
 
     //Draw S
@@ -89,7 +89,7 @@
 
     lcd.printString("NAKE ",34,3);
     lcd.printString("By M.Birney",10,5);
-    lcd.drawRect(10,5,65,30,0);
+    lcd.drawRect(10,5,65,30,0); // outline for splash
 
     // need to refresh display after setting pixels
 
@@ -112,9 +112,9 @@
     lcd.drawCircle(10,35,2,0);
     lcd.drawCircle(10,43,2,0);
 
-    gameSpeed= 0.5;
+    gameSpeed= 1.0/5; // set easy game speed(for game time)
 }
-void mediumSelected() // display when medium is selected
+void mediumSelected() // display when medium is selected 
 {
     currentDifficulty=MEDIUM;
     lcd.clear();
@@ -127,7 +127,7 @@
     lcd.drawCircle(10,27,2,0);
     lcd.drawCircle(10,35,2,1);
     lcd.drawCircle(10,43,2,0);
-    gameSpeed=0.5;
+    gameSpeed=1.0/7; // set medium game speed 
 }
 
 void hardSelected() // display when hard is selected
@@ -143,9 +143,10 @@
     lcd.drawCircle(10,27,2,0);
     lcd.drawCircle(10,35,2,0);
     lcd.drawCircle(10,43,2,1);
-    gameSpeed=1.0/32;
+    gameSpeed=1.0/12; // set hard game speed
 }
 
+
 void checkSelectedDifficulty()
 {
 
@@ -209,64 +210,72 @@
 
 void startingSnake()
 {
+   snakeX.resize(5);
+   snakeY.resize(5);
     snakeX[0]=20;
-            snakeX[1]=22;
-            snakeX[2]=24;
-           snakeX[3]=26;
-            snakeX[4]=28;
+    snakeX[1]=22;
+    snakeX[2]=24;
+    snakeX[3]=26;
+    snakeX[4]=28;
+    snakeY[0]=27;
+    snakeY[1]=27;
+    snakeY[2]=27;
+    snakeY[3]=27;
+    snakeY[4]=27;
+    
 
-   for (int i=0; i<5; i++) {
-       // lcd.setPixel(snakeX[i],snakeY[i]);
-         lcd.drawRect(snakeX[i],snakeY[i],1,1,1);
+    for (int i=0; i<5; i++) {
+        // lcd.setPixel(snakeX[i],snakeY[i]);
+        lcd.drawRect(snakeX[i],snakeY[i],1,1,1);
     }
-    
-     
-     wait(5);
+
 }
 
 
 void randomiseFood()
 {
+//   http://stackoverflow.com/questions/3383286/create-a-random-even-number-between-range
+
 
     srand(time(NULL));
 
-    int randomX = rand() % (83-1)+1; // generate random number between 1 and 82  // spaces within boundar
+    int randomX = 2 * (1 + rand() % (40 - 1 + 1)) ; //generate random even number between 2 and 80
 
-    int randomY = rand() %(46-9)+9;// generate random number betwwen 9 and 46
+    int randomY = (2 * (4 + rand() % (22 - 4 + 1))) +1; // generate random even number between 8 and 44 then plus 1 for odd number in range of 9-45
 
-    // int r = rand() % (21 - 10) + 10 // 10 -21 inclusive
 
-    while(lcd.getPixel(randomX,randomY)==1) { // if that pixel is already filled
+    while(lcd.getPixel(randomX,randomY)==1) { // if that pixel is already filled keep generating till a empty space is found
 
-        int randomX = rand() % (83-1)+1; // generate random number between 1 and 82  // spaces within boundar
-
-        int randomY = rand() %(46-9)+9;
+        int randomX = 2 * (1 + rand() % (40 - 1 + 1)) ;
+        int randomY = (2 * (4 + rand() % (22 - 4 + 1))) +1; // generate random even number between 8 and 44 then plus 1 for odd number in range of 9-45
 
 
     }
-   // lcd.setPixel(randomX,randomY) ;// set the food
-   lcd.drawRect(randomX,randomY,1,1,1);
-    food[0]=randomX; // update food position
-    food[1]=randomY;// update food position
+    // lcd.setPixel(randomX,randomY) ;// set the food
+    lcd.drawRect(randomX,randomY,1,1,1);
+    //lcd.setPixel(randomX,randomY);
+
+    foodX[0]=randomX; // update food position
+    foodY[0]=randomY;// update food position
     lcd.refresh();
-
+//serial.printf("%d",randomX);
 }
 
 void Boundary()
 {
 
 
-    for(int x = 0; x< 84; x++) {
+    for(int x = 1; x< 83; x++) { // draw 1 to 82 at y=8
         lcd.setPixel(x,8);
     }
-    for(int x = 0; x< 84; x++) {
+    for(int x = 1; x< 83; x++) { // draw 1 to 82 at y=47
         lcd.setPixel(x,47);
     }
-    for(int y = 8; y< 48; y++) {
-        lcd.setPixel(0,y);
+    for(int y = 8; y< 48; y++) {// draw 8 tp 47 at x=1
+        lcd.setPixel(1,y);
     }
-    for(int y = 8; y< 48; y++) {
-        lcd.setPixel(83,y);
+    for(int y = 8; y< 48; y++) {// draw 8 to 47 at x =82
+        lcd.setPixel(82,y);
     }
 
     lcd.refresh();
@@ -301,8 +310,8 @@
     }
 
 
-   // lcd.clearPixel(snakeX[0],snakeY[0]);//delete tail
-      lcd.drawRect(snakeX[0],snakeY[0],1,1,2);
+    // lcd.clearPixel(snakeX[0],snakeY[0]);//delete tail
+    lcd.drawRect(snakeX[0],snakeY[0],1,1,2);
 
     for (int i =0; i<snakeX.size(); i++) {  // shift elements
         snakeX[i]=snakeX[i + 1]; // apart from head
@@ -314,21 +323,33 @@
         case UP:
             snakeX[snakeX.size()-1]=snakeX[snakeX.size()-2];
             snakeY[snakeY.size()-1]=snakeY[snakeY.size()-2]-2;
+            
+ if(snakeY[snakeY.size()-1] <9) snakeY[snakeY.size()-1]=45;
             break;
 
         case DOWN:
-            snakeX[snakeX.size()-1]=snakeX[snakeX.size()-2];
+          snakeX[snakeX.size()-1]=snakeX[snakeX.size()-2];
             snakeY[snakeY.size()-1]=snakeY[snakeY.size()-2]+2;
+            
+            if(snakeY[snakeY.size()-1] >45) snakeY[snakeY.size()-1]=9;
             break;
 
         case LEFT:
             snakeX[snakeX.size()-1]=snakeX[snakeX.size()-2]-2;
+            
+            if(snakeX[snakeX.size()-1] <2) snakeX[snakeX.size()-1]=80;
+    
             snakeY[snakeY.size()-1]=snakeY[snakeY.size()-2];
             break;
 
         case RIGHT:
-            snakeX[snakeX.size()-1]=snakeX[snakeX.size()-2]+2;
+            snakeX[snakeX.size()-1]= snakeX[snakeX.size()-2]+2;
+          
+          if(snakeX[snakeX.size()-1] >80) snakeX[snakeX.size()-1]=2;
+         
+            
             snakeY[snakeY.size()-1]=snakeY[snakeY.size()-2];
+          
             break;
 
         case CENTRE:
@@ -342,51 +363,74 @@
 
     }
 }
-
+void playTune()
+{
+    
+    //float frequency[]={440,659};
+   // float beat[]={1,1,};
+    // Buzzer=0.3; 
+      //  Buzzer.period(1/(440));// time =1/f 
+        //wait(1);
+        //Buzzer.period(1/(659));
+     
+        //Buzzer=0;
+        
+           // set PWM period
+             
+// set duty cycle 
+     //wait(0.5*beat[i]);     
+}
 void gameOver()
 {
+    leds=1;
     startGame.detach();
-    lcd.clearPixel(snakeX.back(),snakeY.back());
+    lcd.drawRect(snakeX.back(),snakeY.back(),1,1,2);
     wait(0.2);
     lcd.refresh();
-    lcd.setPixel(snakeX.back(),snakeY.back());
+    lcd.drawRect(snakeX.back(),snakeY.back(),1,1,1);
     wait(0.3);
     lcd.refresh();
-    lcd.clearPixel(snakeX.back(),snakeY.back());
+    lcd.drawRect(snakeX.back(),snakeY.back(),1,1,2);
     wait(0.2);
     lcd.refresh();
-    lcd.setPixel(snakeX.back(),snakeY.back());
+    lcd.drawRect(snakeX.back(),snakeY.back(),1,1,1);
     wait(0.2);
     lcd.refresh();
     lcd.clear();
     lcd.inverseMode();
 
-    
+
     lcd.printString("Your Score" ,12,0);
-     lcd.printString("=" ,34,1);
-     
-     int updatedScore=score;
-     int length = sprintf(buffer,"%2d",updatedScore);
+    lcd.printString("=" ,34,1);
+
+    int updatedScore=score;
+    int length = sprintf(buffer,"%2d",updatedScore);
+
+    if (length <= 14)  // if string will fit on display
+        lcd.printString(buffer,40,1);
 
-        if (length <= 14)  // if string will fit on display
-            lcd.printString(buffer,40,1);
-            
-             lcd.printString("Press Reset" ,2,3);
-             lcd.printString("Button To" ,10,4);
-             lcd.printString("Play Again" ,20,5);
-           // 
-            lcd.refresh();
-    gamePlaying=0;
+    lcd.printString("Press Reset" ,2,3);
+    lcd.printString("Button To" ,10,4);
+    lcd.printString("Play Again" ,20,5);
     
+    //
+    lcd.refresh();
+   playTune();
     
+    //gamePlaying=0;
+
+
 
 }
 
+
+
 void checkForCollision()
 {
 
-    if (snakeX.back()<=0 || snakeX.back()>=82 || snakeY.back()<=8 ||snakeY.back()>=47) {
-        
+    if (snakeX.back()==0|| snakeX.back()==82 || snakeY.back()==7 ||snakeY.back()>=47) {
+        myleds=15;
+
         gameOver();
     }
 }
@@ -396,32 +440,43 @@
 void checkForFood()
 {
 
-    if (snakeX.back()+1==food[0] && snakeY.back()==food[1]) {   // if  x and y of head match food
+    if (snakeX.back()==foodX[0] && snakeY.back()==foodY[0]) {   // if  x and y of head match food
 
 
         switch(joystick.direction) {
 
             case RIGHT:
-                snakeX.push_back(food[0]+2);
-                snakeY.push_back(food[1]);
+                snakeX.insert (snakeX.begin() +0,foodX[0]-2 );
+                snakeY.insert (snakeY.begin() ,foodY[0]);
+                //snakeX.push_back(foodX[0]+2);
+                // snakeY.push_back(foodY[0]);
                 break;
             case LEFT:
 
-                snakeX.push_back(food[0]-2);
-                snakeY.push_back(food[1]);
+                snakeX.insert (snakeX.begin() +0,foodX[0]+2 );
+                snakeY.insert (snakeY.begin() ,foodY[0]);
+
+                //  snakeX.push_back(foodX[0]-2);
+                // snakeY.push_back(foodY[0]);
                 break;
 
 
             case UP:
-                snakeX.push_back(food[0]);
-                snakeY.push_back(food[1]-2);
+
+                snakeX.insert (snakeX.begin() +0,foodX[0] );
+                snakeY.insert (snakeY.begin() ,foodY[0]+2);
+                //  snakeX.push_back(foodX[0]);
+                // snakeY.push_back(foodY[0]-2);
                 break;
 
             case DOWN:
-                snakeX.push_back(food[0]);
-                snakeY.push_back(food[1]+2);
+                snakeX.insert (snakeX.begin() +0,foodX[0] );
+                snakeY.insert (snakeY.begin() ,foodY[0]-2);
+                // snakeX.push_back(foodX[0]);
+                // snakeY.push_back(foodY[0]+2);
                 break;
         }
+        lcd.drawRect(snakeX[0],snakeY[0],1,1,1);
 
         int updatedScore;
         // snakeX.insert (snakeX.begin() + 0, );
@@ -445,12 +500,18 @@
 void startButtonPressed()
 {
     gamePlaying=1;
-   // myleds=15;
+    // myleds=15;
 }
 
 
 
+void updateBrightness()
+{
+    float ain ;
+    ain=pot.read();
+    lcd.setBrightness(1-ain);
 
+}
 void updateGameISR()
 {
     updateGameFlag=1;
@@ -459,8 +520,8 @@
 void printVectorContent()
 {
 
-    for( int i=0; i<snakeX.size(); i++)
-        serial.printf( "%d \n \r"  ,snakeX[i]);
+    //for( int i=0; i<snakeX.size(); i++)
+    // serial.printf( "%d \n \r"  ,snakeX[i]);
 
 }
 
@@ -474,6 +535,8 @@
         startGame.detach();
 
         gamePaused=1;
+        leds=2;
+
     }
 
     else {
@@ -490,78 +553,71 @@
 
 void checkForCollisionWithSelf(int i)
 {
-
-        if(snakeX.back()==snakeX[i] && snakeY.back()==snakeY[i]) {
-
-
-            gameOver();
-
-        
+    if(snakeX.back()==snakeX[i] && snakeY.back()==snakeY[i]) {
+        gameOver();
     }
 
 
 }
 void startUpMenu()
 {
-
-    // first need to initialise display
-    
-    displaySplash();
-    wait(4);
+lcd.inverseMode();
     easySelected();
     joystick.direction=UNKNOWN;
     calibrateJoystick();  // get centred values of joystick
-    pollJoystick.attach(&updateJoystick,1.0/5.0);
-    startGame.attach(&updateGameISR,gameSpeed); // read joystick 10 times per second
-    
-
-
+     
 }
 
 void resetButtonPressed()
 {
-  // myleds=0;
-   easySelected();
-   pollJoystick.attach(&updateJoystick,1.0/5.0);
+    gamePlaying=0;
 }
 
 
 int main()
 {
+    leds=1;
     lcd.init();
-    startUpMenu();
     resetButton.mode(PullDown);
     startButton.mode(PullDown);
     button.mode(PullDown);
     startButton.rise(&startButtonPressed);
     resetButton.rise(&resetButtonPressed);
     button.rise(&pauseButtonPressed);
-serial.printf("starting");
+      displaySplash();
+    wait(4);
+//serial.printf("starting");
     while(1) {
-        if (gamePlaying==0) {
+        startUpMenu();
+        while (gamePlaying==0) {
+            updateJoystick();
             checkSelectedDifficulty();
-            serial.printf("check difficulty loop");
+            updateBrightness();
+            //serial.printf("check difficulty loop");
         }
 
-        else if (gamePlaying==1) {
+         if (gamePlaying==1) {
+
             lcd.clear();
             lcd.normalMode();      // normal colour mode
             Boundary();
-            
-            pollJoystick.detach();
-            startGame.attach(&updateGameISR,gameSpeed);
+            previousDirection=RIGHT;
+            joystick.direction=RIGHT; // make sure when game reset that joystick is reset to right 
             startingSnake();
             randomiseFood();
+            int score=5;
+    int length = sprintf(buffer,"%2d",score);
             if (length <= 14)  // if string will fit on display
                 lcd.printString(buffer,0,0);
             // lcd.drawRect(0,0,83,7,0);
-            lcd.refresh();
-            serial.printf("gameplaying=1 game init");
+            lcd.refresh();    
+             startGame.attach(&updateGameISR,gameSpeed);
+           
+            while (gamePlaying==1) {
 
-            //init game start time back food
-            while (1) {
-                serial.printf("enter game loop");
+                //  serial.printf("enter game loop");
                 if(updateGameFlag==1) {
+                    leds=4;
                     //updateJoystick();
                     updateGameFlag=0;
                     updateJoystick();
@@ -570,31 +626,31 @@
                     updateSnakeArray();
                     for (int i=0; i<snakeX.size(); i++) {
                         lcd.drawRect(snakeX[i],snakeY[i],1,1,1);
-                       // lcd.setPixel(snakeX[i],snakeY[i]);
-                        
+                  // lcd.setPixel(snakeX[i],snakeY[i]);
+
 
                     }
                     lcd.refresh();
                     previousDirection=joystick.direction;
-                    
+
+                    //checkForCollision();
                     checkForFood();
-                    checkForCollision();
-                    
+
+
                     for (int i=0; i<snakeX.size()-1; i++) {
                         checkForCollisionWithSelf(i);
-                    }
-
+                         updateBrightness();
+                        //serial.printf("%d",snakeX.size());
+                        // printVectorContent();
 
-                    //serial.printf("%d",snakeX.size());
-                    // printVectorContent();
+                    }
 
                 }
 
             }
-
         }
-    }
 
 
 
+    }
 }
\ No newline at end of file