Diff: main.cpp

Revision:

5:257b4816ac6a

Parent:

4:3ceebacef5f1

Child:

6:9a5706a27240

--- a/main.cpp	Wed Apr 06 12:42:02 2016 +0000
+++ b/main.cpp	Wed Apr 06 17:49:36 2016 +0000
@@ -24,6 +24,8 @@
 AnalogIn xPot(PTC11);
 AnalogIn yPot(PTC10);
 
+PwmOut greenLed(PTA1);
+
 // timer to regularly read the joystick
 Ticker pollJoystick;
 // Serial for debug
@@ -78,20 +80,26 @@
 int snakeTailY[100];
 int snakeTailLength;
 
+int score = 0;
+int fruitValue = 10;
+
 int i = 41; // snake head origin x
 int j = 23; // snake head origin y
-int prev_i;
-int prev_j;
-int prev2_i;
-int prev2_j;
+int prev_i = 41;
+int prev_j = 23;
+int prev2_i = 41;
+int prev2_j = 23;
 
 // function prototypes
 void calibrateJoystick();
 void updateJoystick();
 void joystickDirection();
 void generateFood();
-void newFruitValues();
+void newFruitXY();
 void moveSnake();
+void greenLedFlash();
+void hardWall();
+void scoreCalculation();
 
  
 int main()
@@ -99,17 +107,12 @@
     
     calibrateJoystick();  // get centred values of joystick
     pollJoystick.attach(&updateJoystick,1.0/10.0);  // read joystick 10 times per second
-
-    
-   
-
     
     srand(time(NULL));
       
-
     lcd.init();
     lcd.drawRect(i,j,1,1,1); // default snake position
-    
+    hardWall();
     generateFood();
  
     while(1) {
@@ -117,7 +120,7 @@
         if (printFlag) {  // if flag set, clear flag and print joystick values to serial port
             printFlag = 0;
             
-            joystickDirection();
+            //joystickDirection();
             moveSnake();
         } 
             sleep(); // put the MCU to sleep until an interrupt wakes it up
@@ -165,7 +168,7 @@
 {
     while (randomXoddEven ==0 || randomYoddEven ==0 || lcd.getPixel(randomX,randomY) >= 1) { // do while x or y is even or pixel is on
         
-        randomX =  rand() % 83 + 1;     // randomX in the range 1 to 81
+        randomX =  rand() % 83 + 1;     // randomX in the range 1 to 83
         randomY =  rand() % 47 + 1;     // randomY in the range 1 to 47
    
     // serial.printf("X = %i\n",randomX); // debug
@@ -179,7 +182,7 @@
 
 }
 
-void newFruitValues() // new fruit coordinate values are given before it is passed to the generateFood function
+void newFruitXY() // new fruit coordinate values are given before it is passed to the generateFood function
 {
                  
         randomX =  rand() % 83 + 1;     // randomX in the range 1 to 81
@@ -233,6 +236,8 @@
                 }
                 
                 lcd.clear();
+                snakeTailX[0] = i;
+                snakeTailY[0] = j
                 prev2_i = prev_i; // previous coordinates of the previous snake head coordinates
                 prev2_j = prev_j;
                 prev_i = i; // previous coordinates of the snake head
@@ -247,16 +252,47 @@
                 else if (currentDirection == down) {
                 j += 2; }
                 
+                hardWall();
                 lcd.drawRect(i,j,1,1,1); // snake head
                 lcd.drawRect(prev_i,prev_j,1,1,1); // seg 1
                 lcd.drawRect(prev2_i,prev2_j,1,1,1); // seg 2
                 lcd.drawRect(randomX,randomY,1,1,1); // food
                 
                 if (i == randomX && j == randomY) { // if fruit is eaten
+                    greenLedFlash();
+                    scoreCalculation();
                     snakeTailLength++;
-                    newFruitValues();
+                    newFruitXY();
                     generateFood();  
                     }
                 wait(1.0);
     
- }         
\ No newline at end of file
+ }
+ 
+void greenLedFlash() {
+     
+     for(float p = 1.0f; p > 0.0f; p -= 0.1f) { // green led rapidly decreases from full brightness to off
+            greenLed = p;
+            wait(0.07);
+        }
+        greenLed = 0;
+     
+}
+
+void hardWall() {
+
+    lcd.drawRect(0,0,83,47,0);
+    lcd.refresh(); 
+   
+}
+
+void scoreCalculation() {
+ 
+    score += fruitValue; // each time fruit is eaten score is calculated and fruit value will increase by 1
+    
+    fruitValue++;
+    
+    serial.printf("score = %i\n",score);
+    serial.printf("fruitValue = %i\n\n",fruitValue);
+       
+}
\ No newline at end of file