Game merupakan sebuah hobi kebanyakan orang. walau gam bertujuan untuk menghilagkan rasa pusing dan penat dari aktifitas sehari-hari, terkadang dengan game juga bisa membuat para penggila game makin pusing, ketika berambisi untuk memenangkan game yang di maenkan, di bawah ini merupakan game sederhana yang di buat dengan menggunakan java mobile, unutk itu ikuti langkah-langkah di bawah ini
1. buat sebuah project baru dengan nama game_gue
2. di dalam project buat sebuah midlet dengan nama game_labirin, dan ketikan kode program di bawah ini :
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class game_labirin extends MIDlet implements CommandListener {
private canvas_labirin layar_kanvas;
private pilih layar_pilih;
private Command comm_keluar = new Command(“Keluar”, Command.EXIT, 99);
private Command comm_new = new Command(“Level baru”, Command.SCREEN, 1);
private Command comm_alert = new Command(“Selesai”, Command.EXIT, 1);
private Command comm_opsi = new Command(“Pengaturan ukuran”, Command.SCREEN, 1);
public game_labirin() {
try {
layar_kanvas = new canvas_labirin(Display.getDisplay(this));
layar_kanvas.addCommand(comm_keluar);
layar_kanvas.addCommand(comm_new);
layar_kanvas.addCommand(comm_opsi);
layar_kanvas.setCommandListener(this);
} catch(Exception e) {
Alert errorAlert = new Alert(“error”,
e.getMessage(), null, AlertType.ERROR);
errorAlert.setCommandListener(this);
errorAlert.setTimeout(Alert.FOREVER);
errorAlert.addCommand(comm_alert);
Display.getDisplay(this).setCurrent(errorAlert);
}
}
public void startApp() throws MIDletStateChangeException {
if(layar_kanvas != null) {
layar_kanvas.start();
}
}
public void destroyApp(boolean unconditional)
throws MIDletStateChangeException {
layar_kanvas = null;
System.gc();
}
public void pauseApp() {
}
public void commandAction(Command c, Displayable s) {
if(c == comm_new) {
layar_kanvas.newMaze();
} else if(c == comm_alert) {
try {
destroyApp(false);
notifyDestroyed();
} catch (MIDletStateChangeException ex) {
}
} else if(c == comm_opsi) {
if(layar_pilih == null) {
layar_pilih = new pilih(layar_kanvas);
}
Display.getDisplay(this).setCurrent(layar_pilih);
} else if(c == comm_keluar) {
try {
destroyApp(false);
notifyDestroyed();
} catch (MIDletStateChangeException ex) {
}
}
}
}
3. buat class baru dan beri nama canvas_labirin, dan ketikan kode program di bawah ini :
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class canvas_labirin extends javax.microedition.lcdui.Canvas {
private Display layar;
private pola_gambar garis;
private boolean gameover = false;
private int area;
private int x1;
private int x2;
private int x = 0;
private int y = 0;
private int yy;
private int xx;
private int yyh;
private int xxw;
private int Ox = 1;
private int Oy = 1;
private int Px = 1;
private int Py = 1;
int setColWidth(int colWidth) {
if(colWidth height / xxw) {
x1 = height / xxw;
}
if(x1 < area) {
throw(new Exception("error"));
}
}
void start() {
layar.setCurrent(this);
repaint();
}
void newMaze() {
gameover = false;
garis = null;
Px = 1;
Py = 1;
Ox = 1;
Oy = 1;
layar.setCurrent(this);
repaint();
}
protected void paint(Graphics g) {
if(garis == null) {
int width = getWidth();
int height = getHeight();
garis = new pola_gambar(xx, yy);
for(int i = 0; i < xx; i++) {
for(int j = 0; j < yy; j++) {
if(garis.area_xy[i][j] == 0) {
g.setColor(0,100,10);
} else {
g.setColor(255,255,200);
}
g.fillRect(x + (i*area),
y + (j*area),
area, area);
}
}
g.setColor(0,100,10);
g.fillRect(x + ((xx-1) * area),
y, width, height);
g.setColor(255,255,200);
g.fillRect(x + ((xx-1) * area),
y + ((yy-2) * area), width, height);
g.setColor(0,100,10);
g.fillRect(x,
y + ((yy-1) * area), width, height);
}
g.setColor(255, 100, 150);
g.fillRoundRect(x + (area)*Px,
y + (area)*Py,
area, area,
area, area);
if((Ox != Px) || (Oy != Py)) {
g.setColor(255,255,200);
g.fillRect(x + (area)*Ox,
y + (area)*Oy,
area, area);
}
if(gameover) {
int width = getWidth();
int height = getHeight();
Font font = g.getFont();
int fontHeight = font.getHeight();
int fontWidth = font.stringWidth("Berhasil");
g.setColor(255,255,200);
g.fillRect((width – fontWidth)/2, (height – fontHeight)/2,
fontWidth + 2, fontHeight);
g.setColor(255, 0, 0);
g.setFont(font);
g.drawString("Berhasil", (width – fontWidth)/2,
(height – fontHeight)/2,
g.TOP|g.LEFT);
}
}
public void keyPressed(int keyCode) {
if(! gameover) {
int action = getGameAction(keyCode);
switch (action) {
case LEFT:
if((garis.area_xy[Px-1][Py] == 1) &&
(Px != 1)) {
Ox = Px;
Oy = Py;
Px -= 2;
repaint();
}
break;
case RIGHT:
if(garis.area_xy[Px+1][Py] == 1) {
Ox = Px;
Oy = Py;
Px += 2;
repaint();
} else if((Px == garis.area_xy.length – 2) &&
(Py == garis.area_xy[0].length – 2)) {
Ox = Px;
Oy = Py;
Px += 2;
gameover = true;
repaint();
}
break;
case UP:
if(garis.area_xy[Px][Py-1] == 1) {
Ox = Px;
Oy = Py;
Py -= 2;
repaint();
}
break;
case DOWN:
if(garis.area_xy[Px][Py+1] == 1) {
Ox = Px;
Oy = Py;
Py += 2;
repaint();
}
break;
}
}
}
}
4. buat class baru berikutnya dengan nama pilih, dan ketikan kode program di bawh ini :
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class pilih extends Form
implements ItemStateListener, CommandListener {
private Gauge indikator;
private Gauge klomindikator;
private canvas_labirin xycanvas;
public pilih(canvas_labirin canvas) {
super("Pengaturan ukuran");
addCommand(keluar);
setCommandListener(this);
xycanvas = canvas;
setItemStateListener(this);
indikator = new Gauge("Lebar", true,
xycanvas.getMaxColWidth(),
xycanvas.getColWidth());
klomindikator = new Gauge("Jumlah kolom", false,
xycanvas.getMaxNumCols(),
xycanvas.getNumCols());
append(indikator);
append(klomindikator);
}
public void itemStateChanged(Item item) {
if(item == indikator) {
int val = indikator.getValue();
if(val < xycanvas.getMinColWidth()) {
indikator.setValue(xycanvas.getMinColWidth());
} else {
int numCols = xycanvas.setColWidth(val);
klomindikator.setValue(numCols);
}
}
}
public void commandAction(Command c, Displayable s) {
if(c == kelaur) {
xycanvas.newMaze();
}
}
}
5. buat class baru terakhir dengan nama pola_gambar, dan ketikan kode program berikut ini :
import java.util.Random;
import java.util.Vector;
public class pola_gambar {
private Random acak_acak = new Random();
int[][] area_xy;
public pola_gambar(int width, int height) {
area_xy = new int[width][height];
for(int i = 1; i < width – 1; i++) {
for(int j = 1; j < height – 1; j++) {
if((i % 2 == 1) || (j % 2 == 1)) {
area_xy[i][j] = 1;
}
}
}
area_xy[0][1] = 1;
createMaze();
}
private void createMaze() {
for(int i = 1; i < area_xy.length – 1; i++) {
for(int j = 1; j < area_xy[i].length – 1; j++) {
if((i + j) % 2 == 1) {
area_xy[i][j] = 0;
}
}
}
for(int i = 1; i < area_xy.length – 1; i+=2) {
for(int j = 1; j
0) {
int chosenIndex = getRandomInt(possibleSquares.size());
int[] chosenSquare = (int[])possibleSquares.elementAt(chosenIndex);
area_xy[chosenSquare[0]][chosenSquare[1]] = 1;
possibleSquares.removeElementAt(chosenIndex);
link(chosenSquare, possibleSquares);
}
possibleSquares = null;
System.gc();
}
private void link(int[] chosenSquare, Vector possibleSquares) {
int linkCount = 0;
int i = chosenSquare[0];
int j = chosenSquare[1];
int[] links = new int[8];
if(i >= 3) {
if(area_xy[i – 2][j] == 1) {
links[2*linkCount] = i – 1;
links[2*linkCount + 1] = j;
linkCount++;
} else if(area_xy[i – 2][j] == 3) {
area_xy[i – 2][j] = 2;
int[] newSquare = new int[2];
newSquare[0] = i – 2;
newSquare[1] = j;
possibleSquares.addElement(newSquare);
}
}
if(j + 3 = 3) {
if(area_xy[i][j – 2] == 3) {
area_xy[i][j – 2] = 2;
int[] newSquare = new int[2];
newSquare[0] = i;
newSquare[1] = j – 2;
possibleSquares.addElement(newSquare);
} else if(area_xy[i][j – 2] == 1) {
links[2*linkCount] = i;
links[2*linkCount + 1] = j – 1;
linkCount++;
}
}
if(i + 3 0) {
int linkChoice = getRandomInt(linkCount);
int linkX = links[2*linkChoice];
int linkY = links[2*linkChoice + 1];
area_xy[linkX][linkY] = 1;
int[] removeSquare = new int[2];
removeSquare[0] = linkX;
removeSquare[1] = linkY;
possibleSquares.removeElement(removeSquare);
}
}
public int getRandomInt(int upper) {
int retVal = acak_acak.nextInt() % upper;
if(retVal < 0) {
retVal += upper;
}
return(retVal);
}
}
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