P.49 (Add pressKey and playSong Method to Piano Class)
private void pressKey(int i) {
if(i >= 0 && i < 90) {
if(i <= 20)
pianoWhiteKey[i].whiteKeyDownUp(); // i <= 20 are for white keys
if(i >= 50 && i != 52 && i != 56 && i != 59)
pianoBlackKey[i-50].blackKeyDownUp(); // i >= 50: some are for black keys
}
}
public void playSong() {
// Sound of Music
int[] notes =
{1,1,2,3,99,1,3,1,3,99,2,3,4,4,3,2,4,99,3,4,5,99,3,
5,3,5,99,4,5,6,6,5,4,6,99,5,99,1,2,3,4,5,6,99,6,
99,2,3,54,5,6,7,99,7,99,3,54,55,6,7,8,99,8,7,56,6,
4,7,5,8,5,3,2,0};
int i = 0;
while(notes[i] != 0) {
if((notes[i] >= 1 && notes[i] <= 12) || (notes[i] >= 51 && notes[i] <= 61))
pressKey(notes[i]-1);
else
Greenfoot.delay(15);
i++;
}
}