import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Random;
import java.util.TreeSet;
import javax.swing.Timer;
class Canvas extends java.awt.Canvas {
double gravity = 1.0;
double damp = 0.75;
double skyrocketVelocity = -82;
int skyrocketWidth = 4;
int skyrocketHeight = 8;
int pieceNumber = 200;
double pieceInitialVelocity = 72;
double pieceDarkerFactor = 0.90;
int pieceWidth = 1;
int pieceHeight = 2;
double traceDarkerFactor = 0.70;
int frameDelay = 40;
int border = 10;
Random random = new Random(System.currentTimeMillis());
int currentTime;
TreeSet things = new TreeSet();
Skyrocket currentSkyrocket;
Image offscreenImage;
Graphics offscreenGraphics;
void init() {
setBackground(Color.BLACK);
offscreenImage = createImage(getWidth(), getHeight());
offscreenGraphics = offscreenImage.getGraphics();
addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent e) {
onMousePress(e);
}
public void mouseReleased(MouseEvent e) {
onMouseRelease(e);
}
});
addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
onKeyPress(e);
}
});
new Timer(frameDelay, new ActionListener() {
public void actionPerformed(ActionEvent e) {
repaint();
}
}).start();
requestFocus();
}
void onMousePress(MouseEvent e) {
if (currentSkyrocket != null)
currentSkyrocket.explode();
int r = random.nextInt(256);
int g = random.nextInt(256);
int b = random.nextInt(256);
int max = r > g ? r : g;
max = max > b ? max : b;
double brighter = 255.0 / max;
r = (int) (r * brighter);
g = (int) (g * brighter);
b = (int) (b * brighter);
Color color = new Color(r, g, b);
currentSkyrocket = new Skyrocket(this, color, e.getX());
things.add(currentSkyrocket);
}
void onMouseRelease(MouseEvent e) {
if (currentSkyrocket != null) {
currentSkyrocket.explode();
currentSkyrocket = null;
}
}
void onKeyPress(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_Q) {
gravity += 0.01;
}
if (e.getKeyCode() == KeyEvent.VK_A) {
gravity -= 0.01;
if (gravity < 0)
gravity = 0;
}
if (e.getKeyCode() == KeyEvent.VK_W) {
damp += 0.01;
if (damp > 1)
damp = 1;
}
if (e.getKeyCode() == KeyEvent.VK_S) {
damp -= 0.01;
if (damp < 0)
damp = 0;
}
if (e.getKeyCode() == KeyEvent.VK_E) {
skyrocketVelocity -= 1;
}
if (e.getKeyCode() == KeyEvent.VK_D) {
skyrocketVelocity += 1;
if (skyrocketVelocity > 0)
skyrocketVelocity = 0;
}
if (e.getKeyCode() == KeyEvent.VK_R) {
skyrocketWidth += 1;
}
if (e.getKeyCode() == KeyEvent.VK_F) {
skyrocketWidth -= 1;
if (skyrocketWidth < 1)
skyrocketWidth = 1;
}
if (e.getKeyCode() == KeyEvent.VK_T) {
skyrocketHeight += 1;
}
if (e.getKeyCode() == KeyEvent.VK_G) {
skyrocketHeight -= 1;
if (skyrocketHeight < 1)
skyrocketHeight = 1;
}
if (e.getKeyCode() == KeyEvent.VK_Y) {
pieceNumber += 10;
}
if (e.getKeyCode() == KeyEvent.VK_H) {
pieceNumber -= 10;
if (pieceNumber < 0)
pieceNumber = 0;
}
if (e.getKeyCode() == KeyEvent.VK_U) {
pieceInitialVelocity += 1;
}
if (e.getKeyCode() == KeyEvent.VK_J) {
pieceInitialVelocity -= 1;
if (pieceInitialVelocity < 0)
pieceInitialVelocity = 0;
}
if (e.getKeyCode() == KeyEvent.VK_I) {
pieceDarkerFactor += 0.01;
if (pieceDarkerFactor > 1)
pieceDarkerFactor = 1;
}
if (e.getKeyCode() == KeyEvent.VK_K) {
pieceDarkerFactor -= 0.01;
if (pieceDarkerFactor < 0)
pieceDarkerFactor = 0;
}
if (e.getKeyCode() == KeyEvent.VK_O) {
pieceWidth += 1;
}
if (e.getKeyCode() == KeyEvent.VK_L) {
pieceWidth -= 1;
if (pieceWidth < 1)
pieceWidth = 1;
}
if (e.getKeyCode() == KeyEvent.VK_P) {
pieceHeight += 1;
}
if (e.getKeyCode() == KeyEvent.VK_SEMICOLON) {
pieceHeight -= 1;
if (pieceHeight < 1)
pieceHeight = 1;
}
if (e.getKeyCode() == KeyEvent.VK_OPEN_BRACKET) {
traceDarkerFactor += 0.01;
if (traceDarkerFactor > 1)
traceDarkerFactor = 1;
}
if (e.getKeyCode() == KeyEvent.VK_QUOTE) {
traceDarkerFactor -= 0.01;
if (traceDarkerFactor < 0)
traceDarkerFactor = 0;
}
System.out.println("g" + (int) (gravity * 100) + " " + "d"
+ (int) (damp * 100) + " " + "sv"
+ (int) (-skyrocketVelocity * 1) + " " + "sw"
+ (int) (skyrocketWidth * 1) + " " + "sh"
+ (int) (skyrocketHeight * 1) + " " + "pn"
+ (int) (pieceNumber * 1) + " " + "pv"
+ (int) (pieceInitialVelocity * 1) + " " + "pf"
+ (int) (pieceDarkerFactor * 100) + " " + "pw"
+ (int) (pieceWidth * 1) + " " + "ph" + (int) (pieceHeight * 1)
+ " " + "tf" + (int) (traceDarkerFactor * 100));
}
public void update(Graphics g) {
paint(g);
}
long totalPaintTime;
public void paint(Graphics g) {
if (offscreenImage == null)
return;
long time1 = System.currentTimeMillis();
System.gc();
long time2 = System.currentTimeMillis();
offscreenGraphics.clearRect(0, 0, getWidth(), getHeight());
TreeSet things2 = new TreeSet();
while (!things.isEmpty()) {
Thing thing = (Thing) things.first();
things.remove(thing);
thing.paint();
if (thing.stateDead || thing.stateX < -border
|| thing.stateY > getWidth() + border
|| thing.stateY < -border
|| thing.stateY > getHeight() + border) {
} else {
things2.add(thing);
}
}
things = things2;
g.drawImage(offscreenImage, 0, 0, this);
long time3 = System.currentTimeMillis();
totalPaintTime += time3 - time1;
currentTime++;
// System.out.println(
// "("+(time2-time1)+") "+totalPaintTime+" / "+currentTime+" = "+totalPaintTime/currentTime
// );
}
}
