Discussions

12. Expansion: place a new key on the keyboard that is activated by pressing ‘m’. Have the ‘m’ key play a random note, one of the notes used on the 12 white keys already on the keyboard. 13. Expansion: place a new key on the keyboard that is activated by pressing ‘n’. Have the ‘n’ key play a random note, one of the notes used on the 14 black keys already on the keyboard. 15. Expansion: place a new key on the keyboard that is activated by pressing ‘b’. Create a chord, a combination of two or more notes played at the same time. Have a new key play a chord of three notes of your choosing when pressing the ‘b’ key. 16. Expansion: program each white key so that after every 10 times that the white key is pressed, a random note is played from among the 12 white keys. Write this segment using a constant: o final int KEYPRESS_LIMIT = 10; o Use KEYPRESS_LIMIT everywhere you might be tempted to use the number 10. <Code Omitted> <Code Omitted>

If you were to change KEYPRESS_LIMIT to increasing values like 20,30,40 etc. What observations would be noticeably different? final int KEYPRESS_LIMIT = 10; private int Counter = 0; if(Counter >= KEYPRESS_LIMIT) { Greenfoot.playSound( whiteNotes +".wav"); Counter = 0;

I'm doing a mario game. I have classes Mario and Enemy. If Mario touches enemy from the top(jumps on it) the enemy should disappear but if the enemy touches Mario from the side, Mario should disappead. How can I detect if Mario is touching Enemy from the side or top?