Can go to main screen from any screen

game.c

@@ -189,15 +189,15 @@ void handleBrickCollisions(Brick *brptr, Ball *ballptr, int *numBricks, int bric
  *(numBricks) -= 1;
  cur->isHit = 1;
  ballptr->xDir *= -1;
- ballptr->col += (ballptr->xDir * 5);
+ ballptr->col = ballptr->col + (ballptr->xDir * 5);
  } else if ((((ballptr->row + BALLSIZE) == brptr->row)
  || (ballptr->row == (brptr->row + BRICKHEIGHT)))
  && ((ballptr->col >= (cur->col - BALLSIZE))
  && (ballptr->col <= (cur->col + BRICKWIDTH)))) {
  *(numBricks) -= 1;
  cur->isHit = 1;
  ballptr->yDir *= -1;
- ballptr->row += (ballptr->yDir * 5);
+ ballptr->row = ballptr->row + (ballptr->yDir * 5);
  }
  drawRect(cur->row, cur->col, BRICKHEIGHT, BRICKWIDTH, cur->color);
  }

main.c

@@ -16,14 +16,14 @@ int bricksSize;
 int level = INITIAL_LEVEL;
 int lives = INITIAL_LIVES;
 char textBuffer[75];
+int enterPressed = 0;
+int zPressed = 0;
+int backPressed = 0;
 
 int main() {
  // Enable GBA Mode3
  REG_DISPCTL = MODE3 | BG2_ENABLE;
 
- int enterPressed = 0;
- int aPressed = 0;
-
  // Game Loop
  while(1) {
  waitForVblank();
@@ -64,6 +64,7 @@ int main() {
  state = WIN_GAME;
  }
  }
+ backToMain();
  break;
 
  case NEXT_LEVEL:
@@ -76,6 +77,7 @@ int main() {
  state = LEVEL;
  enterPressed = 1;
  }
+ backToMain();
  break;
 
  case LOSE_LIFE:
@@ -84,10 +86,11 @@ int main() {
  break;
 
  case LOSE_LIFE_NO_DRAW:
- if (!aPressed && KEY_DOWN_NOW(BUTTON_A)) {
+ if (!zPressed && KEY_DOWN_NOW(BUTTON_A)) {
  state = LEVEL;
  enterPressed = 1;
  }
+ backToMain();
  break;
 
  case GAME_OVER:
@@ -100,6 +103,7 @@ int main() {
  state = START;
  enterPressed = 1;
  }
+ backToMain();
  break;
 
  case WIN_GAME:
@@ -112,14 +116,18 @@ int main() {
  resetGame();
  enterPressed = 1;
  }
+ backToMain();
  break;
  }
 
  if (!KEY_DOWN_NOW(BUTTON_START)) {
  enterPressed = 0;
  }
  if (!KEY_DOWN_NOW(BUTTON_A)) {
- aPressed = 0;
+ zPressed = 0;
+ }
+ if (!KEY_DOWN_NOW(BUTTON_SELECT)) {
+ backPressed = 0;
  }
  }
 
@@ -211,3 +219,13 @@ void updateScreenText() {
  sprintf(textBuffer, "LIVES: %d", lives);
  drawString3(SCREENHEIGHT - 10, SCREENWIDTH - sizeof(textBuffer) + 20, textBuffer, GREEN);
 }
+
+/**
+ * Function to go back to start screen
+ */
+void backToMain() {
+ if (!backPressed && KEY_DOWN_NOW(BUTTON_SELECT)) {
+ state = START;
+ backPressed = 1;
+ }
+}

main.h

@@ -13,3 +13,4 @@ void gameWon();
 void resetGame();
 void setUpNextLevel();
 void updateScreenText();
+void backToMain();