Eliminator
Java Source:
/**********************************************************
Eliminator.java - My Second Java Game
**********************************************************/
import java.applet.*;
import java.awt.*;
import java.awt.image.*;
import java.net.*;
import java.util.*;
/******** TEST ********/
public class Eliminator extends Applet implements Runnable
{
static int MAX_X=9, MAX_Y=10, MAX_LVL=100, MAX_IMG=11, MAX_HIST=100;
static int X_0 = 5, Y_0 = 5;
Thread game0 = null;
private Image[] xImg = new Image[MAX_IMG+1];
private int xPos, yPos, gLevel, mvPos, maxMove;
private byte[][] currCanvas = new byte[MAX_Y+1][MAX_X+1];
private byte[] xMove = new byte[MAX_HIST];
private byte firstTime;
private Button btn1 = new Button("X");
private Button btnN = new Button(">");
private Button btnP = new Button("<");
private static String stGameEnd = " [GAME END]";
private static String stYouLost = " [YOU LOST]";
private static String mCode = " # *.oO@+,123456789abcdefghij";
private static int xCoord[][] =
{{ 0, 0,20,20}, { 20, 0,20,20}, { 40, 0,20,20}, { 60, 0,20,20}, { 80, 0,20,20}, {100, 0,20,20},
{100,20,20,20}, { 0,20,20,20}, { 20,20,20,20}, { 40,20,20,20}, { 60,20,20,20}, { 80,20,20,20}};
private static String biDat[] = {
", #7, #o.o.o.#, # 5#, # # # #1, # # 3#, # 4#1, #6,",
",, 1#5, 1#.* 1#, 1# 3#, 1#. 2#, 1# 1.#1, 1#5,",
", 2#3, 1#1 .#1, 1# 3#, 1#. o #, 1# 1# #, 1# 1. #, 1#1o #1, 2#3,",
",, 1#5, 1# 1. #, 1#1 1#1, 1# 2.#, 1#. 1#1, 1#4,",
", 1#2, #1 #2, # . 1#1, #* . 1#1, # 1* . #, # # 1#2, #5,",
", #7, #o 3o#, # # 1# #, # 1. 2#, #1. . #1, # 1o . #, #7,",
", 1#5, #1 . *#1, # 4.#, # 5#, #. 4#, #1 3#1, 1#1* #1, 2#3,",
", #6, # 3.#, #. 2#1, # 1* 1#, # 3#1, #2.#1, 2#2,",
",,#9,# 1. 2* #,#1 1*. 1#1, # *. * #, #. 3.#, #7,",
", 2#4, 1#1 . #1, #1 4#, #. 3.#, # 2#1*#, #7,",
", 4#2, #4.#1, #. 4#, #1 2* #, 1#1 # #1, 2# #2, 2# 1.#, 2#4,",
", #6, # 4#, #1 .* #, #. 3#, #* 2.#, # 2* #, #6,",
" #7, # 1. 2#,#1 1*# 1#,# 2.# 1#,#1 #1 2#, # 1* 2#, # 1. 2#, # 5#, # 5#, #7,",
", #6, # .# o#1, #1 3o#, 1# 3#1, 1#* 2.#, 1#.o 1#1, 1#5,",
", 1#5, #1. 2#, # 3.#, #1 * #1, # 4#, #1 2.#, 1#5,",
", 2#2, 1#1 #3, #1 4#, # 5#, # .o#.o#, #1o#2.#, 1#2 #2,",
", 3#2, #3O#1, # o. 1#, # # o.#2,#1 4O*#,# 5o#1,#1 O# 1#1, #6,",
" 4#2, 2#2 #1, 1#1. 2#, 1# 2o#1, #2 . 1#, # 1o .#1, #1 1o#1, 1#4,",
", 1#5, #1 1o #1, #o 3.#, #. 2* #, #1 . 2#, 1#3 #1, 4#2,",
", #4, #. 1#1, # 3#1, # o o.#, #2. 1#, 2# 2#, 2#4,",
", 2#4, 1#1 O #, #1 3#1,#1.O 3#,# 2o 1#1,# 1#2.#,# O o 1#,#7,",
" #2,#1 #4,#. 2O #,# 2#1.#1,# 1Oo# 1#,# o# 2#1,# 2. o #,#O 1#1 #1,#7,",
" 1#2, 1# #2, 1# 1o#1, 1#*. o#1, 1# #O o#, #1 2# #, # . 2O#, #1O 2#1, 1#5,",
"#8,# Oo.oO #,# 2o 2#,# 2O 2#,# 2o 2#,# o . O #,#1 1# 1#1, #6,",
" 1#4, #1 # #1, # .# 1#1, #1 #. 1#, # 5#, #1 * 1.#, 1#1 2#1, 2#1 #1, 3#2,",
" 1#5, #1 1# #1, #.*o.*.#1, # 6#, # #1 # 1#,#1 2#1 1#,# o 4#1,#1 4#1, #6,",
" 1#2, 1# #, 1# #3, #1 3#1, # 1# . #, # . # 1#, #1 #. #1, 1#1 # #, 2#2 #, 4#2,",
", #5, # # 1#1, # 1. 1#,#2. * #1,# 3#. #,#1 2#3, #2 #, 2#2,",
" #3,#1 1#3,# 2. 1#,#1 .#.#1, # 4#, # #o#o#, #1 1o #, 1#1 2#, 2#1 #1, 3#2,",
", #5, # 1o.#1, # . #o#1, # * 3#, #o 4#, #1 2.#1, 1#1 1#1, 2#3,",
", 1#5, 1# # .#1, 1# 1o 1#, #2. * #, #. 3#1, #1o 2#, 1# 3#, 1#5,",
", 4#2, 3#1*#, 2#1. #, 1#1. 1#1, #1 4#, # 4.#, #o 1* o#, #7,",
"#7,# .oO* #,#1 4#1,#O . 3#,#o# 3#1,# #1 2#1,# 1o 3#,#. #1O. #,#5 1#, 4#3,",
", 1#5, 1#. 2#1, #1 # O #, # 1Oo# #, # 2Oo #, #1 o# 1#, 1# 2.#1, 1#5,",
", #5, # 1o #1, # O# o#, #o 1O.#1, # 5#, #1. 2O#, 1#6,",
" #5, # O .#1, #1 2O#1, 1# o#. #, #1 3o#, #O #O 1#, # o 3#, #1 #4, 1#2,",
" 1#4, #1O 1#, # o 1#1, #1. 2#, # O.o*#, #1 2.#1, 1# 2o #, 1#1 3#, 2#5,",
" 1#6, 1# 1. o#, #1 o# 1#, # 2# 1#, #1 3#1, 1#. 2#1, 1# 2o #, 1#1 .# #, 2#5,",
", 1#4, #1 1.#1, # . # #1, #1 . 1o#, #2o *.#, # . * o#, #7,",
" #7,#1 o 1O #,# 4o#1,#1 5#,# 1O 1.#1,#1. 2*#, #1o 2#, # . 1O#, #6,",
};
private static int aMove[] =
{4,4,4,4,4,4,4,4,4,4,6,6,6,6,6,6,6,6,6,6,7,7,7,7,8,8,8,8,8,8,9,9,9,9,9,9,9,9,9,10,};
private Image mainImg;
private Graphics g;
private TextField txt1;
public void init()
{
String param;
int i;
if (g==null) g = getGraphics();
URL url = getCodeBase();
String str = "";
int b = 0;
MediaTracker tracker = new MediaTracker(this);
mainImg = getImage(url, "Balls.gif");
tracker.addImage(mainImg,0);
for (i=0; i<=MAX_IMG; i++)
{
xImg[i] = extractImage(xCoord[i]);
tracker.addImage(xImg[i], i+1);
}
try { tracker.waitForAll(); }
catch (InterruptedException e) {}
setLayout(new BorderLayout());
txt1 = new TextField(17);
txt1.setForeground(new Color(255,255,204));
txt1.setBackground(new Color(102,51,51));
txt1.setEditable(false);
Panel p = new Panel();
p.add(txt1);
p.add(btnP);
p.add(btnN);
p.add(btn1);
add("South", p);
gLevel = 0;
dat2Canvas(0);
firstTime = 1;
}
public void start()
{
if (game0==null)
{
game0 = new Thread(this);
game0.start();
}
}
public void stop()
{
if (game0 != null)
{
game0.stop();
game0 = null;
}
}
public void run()
{
}
public boolean dat2Canvas(int dlvl)
{
int i,x,y,tmp0;
byte z = 0, oz = 0;
String param;
try
{
gLevel += dlvl;
if (gLevel<0) gLevel = 0;
try { i = Integer.parseInt(getParameter("maxmove"+gLevel)); }
catch (NumberFormatException e) { i = 0; }
param = getParameter("data"+gLevel);
if (i>0) maxMove = i;
if (param==null || i<=0)
{ param = biDat[gLevel]; maxMove = aMove[gLevel]; }
}
catch (ArrayIndexOutOfBoundsException exc)
{
gLevel -= dlvl;
return false;
}
for (y=0; y<=MAX_Y; y++)
{ for (x=0; x<=MAX_X; x++)
{ currCanvas[y][x] = 0; }
}
x = y = 0;
for (i=0; i<param.length(); i++)
{
z = (byte)(mCode.indexOf(param.charAt(i)));
if (z>MAX_IMG)
{
if ((tmp0 = (z-MAX_IMG-1))>0)
{
for (int j=0; j<tmp0; j++)
{
try { currCanvas[y][x++] = oz; }
catch (ArrayIndexOutOfBoundsException exc) { j = tmp0; }
}
}
else
{
x = 0; y++;
if (y>MAX_Y) break;
}
}
else if (x<=MAX_X)
{
if (z<0) z = 0;
currCanvas[y][x++] = z;
oz = z;
}
}
for (i=0; i<MAX_HIST; i++) { xMove[i] = 0; }
mvPos = 0;
txt1.setText(" Level "+gLevel+" ("+maxMove+" step max.)");
if (firstTime==1) firstTime = 0;
return true;
}
public boolean action(Event e, Object arg)
{
int h = -1;
if (e.target==btnP) h = 44;
else if (e.target==btnN) h = 46;
else if (e.target==btn1) h = 27;
if (h>0) keyDown(e, h);
return true;
}
public boolean keyDown(Event e, int c)
{
int dx = 0;
int dy = 0;
int ch = 0;
int h = 0;
switch (c)
{
case e.UP: dy = -1; h = 1; break;
case e.DOWN: dy = 1; h = 3; break;
case e.LEFT: dx = -1; h = 5; break;
case e.RIGHT: dx = 1; h = 7; break;
case 27:
if (mvPos==0 && firstTime==0) { firstTime = 1; paint(null); return true; }
h = -100; break;
case 44: h = -101; break;
case 46: h = -99; break;
case 14: h = -90; break;
case 16: h = -110; break;
default:
txt1.setText(" Use ^P,<,>,^N,^R, or BS key.");
break;
}
if (dx==0 && dy==0)
{
if (h<0) { if (dat2Canvas(h+100)) paint(null); }
return true;
}
if (mvPos>=maxMove)
{ txt1.setText(stYouLost); return true; }
h = 1; ch = 0;
while(h>0)
{
if ((h = moveBall(dx,dy))>0)
{ ch = 1; h = checkBoard(); }
}
if (ch==1) { mvPos++; txt1.setText(" Have "+(maxMove-mvPos)+" more step."); }
else return true;
h = GameEnd();
if (h==1) { txt1.setText(stGameEnd); h = -98; }
else if (h==-1 || mvPos>=maxMove)
{ txt1.setText(stYouLost); h = -99; }
if (h<=-98)
{
try { game0.sleep(1500); }
catch (InterruptedException exc) {}
if (dat2Canvas(h+99)) paint(null);
}
return true;
}
public int moveBall(int dx, int dy)
{
int x,y,lx,ly,x2,y2;
byte z0,z1;
int h = 0;
if (dx != 0)
{
ly = Y_0;
for (y=0; y<=MAX_Y; y++)
{
if (dx==1) x = MAX_X-1; else x = 1;
while (x>0 && x<MAX_X)
{
if ((z0 = currCanvas[y][x])>=6)
{
x2 = x; lx = X_0+20*x;
while (x2>0 && x2<MAX_X && (z1=currCanvas[y][x2+dx])==0)
{
try { game0.sleep(10); }
catch (InterruptedException e) {}
h++;
currCanvas[y][x2] = 0;
g.drawImage(xImg[0],lx,ly,this);
x2 += dx; lx += 20*dx;
currCanvas[y][x2] = z0;
g.drawImage(xImg[z0],lx,ly,this);
}
}
x -= dx;
}
ly += 20;
}
}
if (dy != 0)
{
lx = X_0;
for (x=0; x<=MAX_X; x++)
{
if (dy==1) y = MAX_Y-1; else y = 1;
while (y>0 && y<MAX_Y)
{
if ((z0 = currCanvas[y][x])>=6)
{
y2 = y; ly = Y_0+20*y;
while (y2>0 && y2<MAX_Y && (z1=currCanvas[y2+dy][x])==0)
{
try { game0.sleep(10); }
catch (InterruptedException e) {}
h++;
currCanvas[y2][x] = 0;
g.drawImage(xImg[0],lx,ly,this);
y2 += dy; ly += 20*dy;
currCanvas[y2][x] = z0;
g.drawImage(xImg[z0],lx,ly,this);
}
}
y -= dy;
}
lx += 20;
}
}
return h;
}
public int checkBoard()
{
byte z0,z1,z2;
int h = 0;
int h2 = 0;
z1 = 100;
for (int y=0; y<MAX_Y; y++)
{
for (int x=0; x<MAX_X; x++)
{
z0 = (byte)(currCanvas[y][x] % z1);
if (z0>=7)
{
z2 = (byte)(z0+z1);
if (z0==(byte)(currCanvas[y][x+1] % z1))
{
currCanvas[y][x] =
currCanvas[y][x+1] = z2;
h++;
}
if (z0==(byte)(currCanvas[y+1][x] % z1))
{
currCanvas[y][x] =
currCanvas[y+1][x] = z2;
h++;
}
}
}
}
if (h==0) return 0;
for (int z=2; z<=6; z++)
{
try { game0.sleep(100); }
catch (InterruptedException e) {}
int ly = Y_0;
for (int y=0; y<MAX_Y; y++)
{
int lx = X_0;
for (int x=0; x<MAX_X; x++)
{
if ((z0 = currCanvas[y][x])>MAX_IMG)
{
if (z<6) g.drawImage(xImg[z],lx,ly,this);
else
{
currCanvas[y][x] = 0;
g.drawImage(xImg[0],lx,ly,this);
}
}
lx += 20;
}
ly += 20;
}
}
return h;
}
public int GameEnd()
{
int x,y;
int h = 1;
int h0[] = new int[MAX_IMG+1];
for (y=0; y<=MAX_IMG; y++) h0[y] = 0;
for (y=0; y<=MAX_Y; y++)
{
for (x=0; x<=MAX_X; x++)
{
h0[currCanvas[y][x]]++;
}
}
y = 7;
while (y<=MAX_IMG)
{
x = h0[y];
if (x==1) { h = -1; y = MAX_IMG+1; }
else if (h==1 && x>1) h = 0;
y++;
}
return h;
}
private Image extractImage(int[] xyCoord)
{
Image newImage;
ImageFilter filter;
ImageProducer producer;
filter = new CropImageFilter(xyCoord[0],xyCoord[1],xyCoord[2],xyCoord[3]);
producer = new FilteredImageSource(mainImg.getSource(), filter);
newImage = createImage(producer);
return newImage;
}
public void paint(Graphics g)
{
if (g==null) g = getGraphics();
int y2 = Y_0;
for (int y=0; y<=MAX_Y; y++)
{
int x2 = X_0;
for (int x=0; x<=MAX_X; x++)
{
byte z = currCanvas[y][x];
if (firstTime==1 || z>MAX_IMG) z = 0;
g.drawImage(xImg[z],x2,y2,this);
x2 += 20;
}
y2 += 20;
}
if (firstTime==1) doFirstTime();
}
public void doFirstTime()
{
int y = 20, x = 15;
g.setColor(new Color(255,255,204));
String str = "* Eli mi nator *";
g.drawString(str,15,y);
txt1.setText(str);
y += 20; g.drawString("(Java Applet version) 1999 by Riza PN",15,y);
y += 20; g.drawString("The goal is to eliminate all balls. Press",15,y);
y += 15; g.drawString("any arrow key to move the ball. Balls",15,y);
y += 15; g.drawString("will be eliminated if there are more",15,y);
y += 15; g.drawString("than 1 ball in a horizontal or vertical",15,y);
y += 15; g.drawString("direction. The game will be finished if",15,y);
y += 15; g.drawString("all balls are eliminated (YOU WIN), or if",15,y);
y += 15; g.drawString("there is no more possibility to eliminate",15,y);
y += 15; g.drawString("them (YOU LOST).",15,y);
y += 30; g.drawString("The idea is picked from my",15,y);
y += 15; g.drawString("game pocket (they call it IQ-Puzzle)",15,y);
}
}
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