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method name with the class name and a dot. The run() method has its name for a particular reason. Take a look at the first line of Broadway: public class Broadway extends Applet implements Runnable { … Not only does Broadway extend Applet (meaning that it s a subclass of […]

Black Art of Java Game Programming by Joel Fan Sams, Macmillan Computer Publishing ISBN: 1571690433 Pub Date: 11/01/96 Previous Table of Contents Next To run this applet, update the Mondrian.html file from Chapter 1 with the following applet tag. (In future applets, we ll assume that you know […]

case RIGHT: locx += 2; if (locx >= 90) { state = LEFT; } break; case LEFT: locx -= 2; if (locx > stop

public void start() { System.out.println(”>> start paint

Figure 2-2 Rectangle boogie This boogie action is implemented with a simple state machine in updateRectangle(). The rectangle has four states of motion up, down, left, and right and when a threshold is crossed, the rectangle enters the next state. We ll use state machines again for defining the behavior of […]

Animation relies on the same technique, except that the pictures are hand-drawn, or computer-drawn, instead of being snapshots of reality. For example, Figure 2-1 shows a sequence of frames that might be used to animate a walking figure, if the frames were cycled one at a time, at a rate of twelve […]

Black Art of Java Game Programming by Joel Fan Sams, Macmillan Computer Publishing ISBN: 1571690433 Pub Date: 11/01/96 Previous Table of Contents Next Chapter 2 Using Objects for Animation Joel Fan Goals: Understand animation Use objects, inheritance, and dynamic method binding to design Java […]

Pick an object from your surroundings and describe its states, behaviors, and how it interfaces with the world. You can use the Mondrian applet to incorporate different colors and shapes. It s a template for future graphics applets. Look at Appendix A, Java Reference Tables, for the full panoply […]

Black Art of Java Game Programming by Joel Fan Sams, Macmillan Computer Publishing ISBN: 1571690433 Pub Date: 11/01/96 Previous Table of Contents Next The Applet Life Cycle What happens when Joe from Denmark accesses the HTML file Mondrian.html with his Web browser? First, the bytecode contained in […]

%javac Mondrian.java Now use appletviewer to see it: %appletviewer Mondrian.html Appletviewer finds the applet tag in the HTML file, loads the Mondrian class file, and starts executing it. The result is depicted in Figure 1-16. Hmmm…maybe Mondrian was a genius! (In case you were wondering, Mondrian was a 20th-century […]