tango2009
asked on
Java tile map
I am creating Road Rash in a Java midlet. I am trying to create the track using tiles which I lay out. I have followed an example I have. But when I run the program it just gives me a blank screen or doesn't run at all. Could you guys take a look at my code to see if you can see anything wrong with it as I am stuck. Ill post the code and the tiles I am using below.
import javax.microedition.lcdui.*;
import javax.microedition.lcdui.game.*;
import java.util.*;
import java.io.*;
import javax.microedition.media.*;
import javax.microedition.media.control.*;
public class RoadRashCanvas extends GameCanvas implements Runnable {
private Display display;
private boolean sleeping;
private long frameDelay;
private Random rand;
private Sprite ufoSprite;
private Sprite background;
private boolean gameover;
private LayerManager Layers;
private TiledLayer RoadLayer;
private int[] RoadTile = { 1, 3 };
private Player Musicplayer;
private int ufoXSpeed, ufoYSpeed;
int Distance = 0;
int Speed = 5;
int Level = 1;
int[] left = new int[200] ;
int[] right = new int[200] ;
// private Sprite[] roidSprite = new Sprite[3];
private Player tonePlayer;
public RoadRashCanvas(Display d) {
super(true);
display = d;
// Set the frame rate (30 fps)
frameDelay = 33;
}
public void start() {
// Set the canvas as the current screen
display.setCurrent(this);
// Initialize the random number generator
rand = new Random();
// Initialize the UFO and roids sprites
ufoXSpeed = ufoYSpeed = 0;
try {
RoadLayer = new TiledLayer(9, 9, Image.createImage("/Track.png"), 9, 9);
ufoSprite = new Sprite(Image.createImage("/Saucer.png"));
background = new Sprite(Image.createImage("/background.png"));
ufoSprite.setPosition((getWidth() - ufoSprite.getWidth()) / 2,
(getHeight() - ufoSprite.getHeight()) / 2);
Image img = Image.createImage("/Roid.png");
for (int i = 0; i < 200 ; i++) { left[i] = 100 ; right[i] = 300 ; }
//roidSprite[0] = new Sprite(img, 42, 35);
//roidSprite[1] = new Sprite(img, 42, 35);
// roidSprite[2] = new Sprite(img, 42, 35);
}
catch (IOException e) {
System.err.println("Failed loading images!");
}
int[] RoadMap = {
0, 0, 0, 1, 1, 1, 0, 0, 0,
0, 0, 0, 1, 1, 1, 0, 0, 0,
0, 0, 0, 1, 1, 1, 0, 0, 0,
0, 0, 0, 1, 1, 1, 0, 0, 0,
0, 0, 0, 1, 1, 1, 0, 0, 0,
0, 0, 0, 1, 1, 1, 0, 0, 0,
};
for (int i = 0; i < RoadMap.length; i++) {
int column = i % 24;
int row = (i - column) / 24;
RoadLayer.setCell(column, row, RoadMap[i]);
}
// Create the layer manager
Layers = new LayerManager();
Layers.append(RoadLayer);
// Initialize the tone tune and play it once
initTune();
playTune();
// Start the animation thread
sleeping = false;
Thread t = new Thread(this);
t.start();
}
void nextFrame(int moveLines) {
for (int i = 0 ; i < 200-moveLines ; i++) { left[i] = left[i+moveLines] ; right[i] = right[i+moveLines] ; }
// Now fill in new values for left[200-movesLines] to left[200], these define the new road appearing
// over the horizon.
}
public void stop() {
// Clean up the tone tune
cleanupTune();
// Stop the animation
sleeping = true;
}
void drawFrame() {
for (int i = 0 ; i < 200 ; i++) {
// Draw the road
int y = 400-i ;
// drawLine(left[i],y, right[i],y) ;
}
}
public void run() {
Graphics g = getGraphics();
// The main game loop
while (!sleeping) {
update();
draw(g);
try {
Thread.sleep(frameDelay);
}
catch (InterruptedException ie) {}
}
}
private void update() {
// Randomly play the "encounters" tone tune
if (rand.nextInt() % 500 == 0)
playTune();
// Process user input to control the UFO speed
byte G4 = (byte)(ToneControl.C4 + 7);
int keyState = getKeyStates();
// ufoSprite.setPosition(0,0);
if ((keyState & LEFT_PRESSED) != 0) {
// Play a sound to indicate movement
try {
// Manager.playTone(G4, 100, 50);
ufoSprite.move(-2, 0);
}
catch (Exception e) {
}
}
else if ((keyState & RIGHT_PRESSED) != 0) {
// Play a sound to indicate movement
try {
//Manager.playTone(G4, 100, 50);
ufoSprite.move(2,0);
}
catch (Exception e) {
}
}
if ((keyState & UP_PRESSED) != 0) {
// Play a sound to indicate movement
try {
// Manager.playTone(G4, 100, 50);
Distance += 1;
// ufoSprite.move(0,2);
if(Speed < 150)
{
Speed += 5;
}
}
catch (Exception e) {
}
//ufoYSpeed--;
}
else if ((keyState & DOWN_PRESSED) != 0) {
// Play a sound to indicate movement
try {
// Manager.playTone(G4, 100, 50);
// ufoSprite.move(0,-2);
if (Speed > 1)
{
Speed -=5;
}
}
catch (Exception e) {
}
}
ufoXSpeed = Math.min(Math.max(ufoXSpeed, -8), 8);
ufoYSpeed = Math.min(Math.max(ufoYSpeed, -8), 8);
// Move the UFO sprite
ufoSprite.move(ufoXSpeed, ufoYSpeed);
}
private void draw(Graphics g) {
// Clear the display
g.setColor(0x000000);
g.fillRect(0, 0, getWidth(), getHeight());
// Draw the UFO sprit
background.paint(g);
ufoSprite.paint(g);
// Layers.paint(g,0,0);
g.setColor(0xffffff);
g.drawString("Speed mph" + Speed, 20, this.getHeight(), Graphics.BOTTOM|Graphics.LEFT);
g.drawString("Level" + Level, 20, this.getWidth(), Graphics.TOP|Graphics.HCENTER);
// NewGame();
for (int i = 0 ; i < 200 ; i++) {
// Draw the road
int y = 400-i ;
//int drawLine = 0;
// int drawLine(left[i],y, right[i],y) ;
if (Distance == 150)
{
Level += 1;
Distance -= 150;
}
if (Level == 2)
{
}
if (Level == 3)
{
}
// Draw the roid sprites
// for (int i = 0; i < 3; i++)
// roidSprite[i].paint(g);
// Flush the offscreen graphics buffer
flushGraphics();
}
}
private void checkBounds(Sprite sprite) {
// Wrap the sprite around the screen if necessary
if (sprite.getX() < -sprite.getWidth())
sprite.setPosition(getWidth(), sprite.getY());
else if (sprite.getX() > getWidth())
sprite.setPosition(-sprite.getWidth(), sprite.getY());
if (sprite.getY() < -sprite.getHeight())
sprite.setPosition(sprite.getX(), getHeight());
else if (sprite.getY() > getHeight())
sprite.setPosition(sprite.getX(), -sprite.getHeight());
}
private void initTune() {
byte tempo = 30; // 120bpm
byte d4 = 16; // 1/4 note
byte d2 = 32; // 1/2 note
byte C4 = ToneControl.C4;
byte A6 = (byte)(C4 + 21);
byte B6 = (byte)(C4 + 23);
byte G5 = (byte)(C4 + 19);
byte G4 = (byte)(C4 + 7);
byte D5 = (byte)(C4 + 14);
byte rest = ToneControl.SILENCE;
byte[] encountersSequence = {
ToneControl.VERSION, 1,
ToneControl.TEMPO, tempo,
ToneControl.BLOCK_START, 0,
A6,d4, B6,d4, G5,d4, G4,d4, D5,d2, rest,d2,
ToneControl.BLOCK_END, 0,
ToneControl.PLAY_BLOCK, 0,
ToneControl.PLAY_BLOCK, 0,
};
try {
// Create the tone player
tonePlayer = Manager.createPlayer(Manager.TONE_DEVICE_LOCATOR);
tonePlayer.realize();
// Create the tone control and set the tone sequence
ToneControl toneControl = (ToneControl)tonePlayer.getControl("ToneControl");
toneControl.setSequence(encountersSequence);
}
catch (IOException ioe) {
}
catch (MediaException me) {
}
}
private void NewGame() {
// Layers.setViewWindow(10, 10, 10, 30);
}
private void playTune() {
try {
// Play the tone sequence
tonePlayer.start();
}
catch (MediaException me) {
}
}
private void cleanupTune() {
// Close the tone player
tonePlayer.close();
}
}
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