Learning Processing: A Beginner's Guide to Programming Images ...

182 Learning Processing
// Display the raindrop
void display() {
// Display the drop
noStroke();
fill(c);
for (int i = 2; i < r; i + + ) {
ellipse(x,y + i*4,i*2,i*2);
}
}
10.8 Integration: Puttin ’ on the Ritz
It is time. Now that we have developed the individual pieces and confi rmed that each one works properly,
we can assemble them together in one program. Th e fi rst step is to create a new Processing sketch that has
four tabs, one for each of our classes and one main program, as shown in Figure 10.8 .
fi g. 10.8
Th e fi rst step is to copy and paste the code for each class into each tab. Individually, they will not need to
change, so there is no need for us to revisit the code. What we do need to revisit is the main program—
what goes in setup( ) and draw( ) . Referring back to the original game description and knowing how the
pieces were assembled, we can write the pseudocode algorithm for the entire game.
Setup:
• Create Catcher object.
• Create array of drops.
• Set totalDrops equal to 0.
• Create Timer object.
• Start timer.
D ra w :
• Set Catcher location to mouse location.
• Display Catcher.
• Move all available Drops.
• Display all available Drops.
• If the Catcher intersects any Drop.
– Remove Drop from screen.
• If the timer is finished:
– Increase the number of drops.
– Restart timer.
fi g. 10.7