📄 forground.java
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package demo;
import javax.microedition.lcdui.*;
/**
* <p>Title: </p>
* <p>Description: j</p>
* <p>Copyright: Copyright (c) 2003</p>
* <p>Company: </p>
* @author not attributable
* @version 1.0
*/
public class Forground
/*implements Runnable/**/{
public BitArray mapArray; //这个背景象素消息
//public BattleField battleCanvas; //主类
public Image mapImage = null;
///////////////////////////////////////////////////////////////////////////
public static short topLine[]; //记录从资源文件读来的信息通过算法得到的值(记录地表信息)
///////////////////////////////////////////////////////////////////////////
private static Forground instance;
private int m_nWidth;
private int m_nHeight;
private int m_nColor;
public int m_nWindPower = 0;
public Forground(short[] mapInfo, int mapType,
int map_width, int map_height,int color, int squares, boolean isNew) {
/*新地图的格式是
宽度
高度
地图数据类型
方块数
方块A的起始坐标（x，y）
方块A的width,height
方块B......
*/
////System.out.println("in Forground");
m_nWidth = map_width;
m_nHeight = map_height;
//System.out.println("mm_nWdith = " + m_nWidth);
//System.out.println("m_nHeight = " + m_nHeight);
int x = m_nWidth, y = m_nHeight, w = 0, h = 0, n = 0;
if(isNew){
//System.out.println("mapInfo.length = " + mapInfo.length);
while(n < mapInfo.length){
if(mapInfo[n] < x){
x = mapInfo[n];
}
if(mapInfo[n+1] < y){
y = mapInfo[n + 1];
}
if(mapInfo[n] + mapInfo[n+2] > w){
w = mapInfo[n] + mapInfo[n + 2];
}
if(mapInfo[n+1] + mapInfo[n+3] > h){
h = mapInfo[n + 1] + mapInfo[n + 3];
}
n = n + 4;
//System.out.println("mapInfo[" + n + "] = " + mapInfo[n]);
}
w = w - x;
h = h - y;
//System.out.println("x = " + x + "," + "y = " + y + "," + "w = " + w +
//"," + "h = " + h);
mapArray = new BitArray(w , h ,x,y);
}
else{
mapArray = new BitArray(m_nWidth, m_nHeight,0,0);
}
m_nColor = color;
Image bg = null;
Image top = null;
byte abyte[];
mapType = mapType % 4;
abyte = Main.b("ground" + mapType+ ".png");
bg = Image.createImage(abyte, 0, abyte.length);
if (mapType < 3) {
abyte = Main.b("top" + Integer.toString(mapType) + ".png");
top = Image.createImage(abyte, 0, abyte.length);
}
//System.out.println("before create mapArray! width = " + map_width + " height = " + map_height);
mapImage = Image.createImage(w,h);
topLine = new short[map_width];
//for(int i = 0 ; i
//System.out.println("after create mapArray!");
Graphics bGraphic = mapImage.getGraphics();
bGraphic.setColor(m_nColor); //天空颜色
bGraphic.fillRect(0, 0, w, h);
bGraphic.setStrokeStyle(0);
//System.out.println("color = " + color + " isNew = " + isNew + " squares = " + squares + " mapInfo.length = " + mapInfo.length);
createMap(mapInfo, bGraphic, bg, top, squares, isNew);
}
public void createMap(short[] mapInfo, Graphics bGraphic, Image bg,
Image top, int squares, boolean isNew) {
int cx = bGraphic.getClipX();
int cy = bGraphic.getClipY();
int cw = bGraphic.getClipWidth();
int ch = bGraphic.getClipHeight();
if (isNew) { //新的方块地图
int x = 0;
int y = 0;
int w = 0;
int h = 0;
int x_times = 0;
int y_times = 0;
int t_times = 0;
//System.out.println("isNew");
//
for (int i = 0; i < squares; i++) {
x = mapInfo[i * 4];
y = mapInfo[i * 4 + 1];
w = mapInfo[i * 4 + 2];
h = mapInfo[i * 4 + 3];
/*System.out.println("x = " + x );
System.out.println("y = " + y );
System.out.println("w = " + w );
System.out.println("h = " + h );
System.out.println("x - mapArray.m_nX = " + (x - mapArray.m_nX));
System.out.println("y - mapArray.m_nXY = " + (y - mapArray.m_nY));/**/
bGraphic.setClip(x - mapArray.m_nX , y - mapArray.m_nY, w, h);
x_times = w / 32 + 1;
y_times = h / 32 + 1;
t_times = w / 16 + 1;
//System.out.println("before paint bg");
for (int k = 0; k < x_times; k++) {
for (int l = 0; l < y_times; l++) {
bGraphic.drawImage(bg, x + k * 32 - mapArray.m_nX, y + l * 32 - mapArray.m_nY , 20);
}
}
//System.out.println("before paint top");
if (top != null) {
for (int k = 0; k < t_times; k++) {
bGraphic.drawImage(top, x + k * 16 - mapArray.m_nX , y - mapArray.m_nY , 20);
}
}
//System.out.println("before set array");
for (int k = 0; k < w ; k++) {
for (int l = 0; l < h ; l++) {
//System.out.println((x +k )+ "," + (y + l));
mapArray.set(x + k, y + l);
}
}
/*System.out.println("************************");
System.out.println("231 139 point's value = " + mapArray.get(231,139));
System.out.println("230 139 point's value = " + mapArray.get(230,139));
System.out.println("229 139 point's value = " + mapArray.get(229,139));
System.out.println("228 139 point's value = " + mapArray.get(228,139));
System.out.println("227 139 point's value = " + mapArray.get(227,139));
System.out.println("226 139 point's value = " + mapArray.get(226,139));
System.out.println("225 139 point's value = " + mapArray.get(225,139));
System.out.println("224 139 point's value = " + mapArray.get(224,139));/**/
}
}
else {
int index = 0;
int num = 0;
int j = 0;
int x = 0;
int times = 0;
byte byte1 = 5;
int key = 2;
while (index < mapInfo.length) {
num = mapInfo[index];
for (j = 0; j < num / 2; j++) {
bGraphic.setClip(x, mapInfo[index + 2 * j + 1], 1,
mapInfo[index + 2 * j + 2] -
mapInfo[index +
2 * j + 1]); // x, y, width, height
for (int n = mapInfo[index + 2 * j + 1];
n <= mapInfo[index + 2 * j + 2]; n++) {
//mapArray[x][n - 1] = 1;
mapArray.set(x , n - 1);
}
times = (mapInfo[index + 2 * j + 2] - mapInfo[index +
2 * j +
1]) / 32 + 1;
for (byte n = 0; n < times; n++) {
bGraphic.drawImage(bg, x - x % bg.getWidth(),
mapInfo[index + 2 * j + 1] +
n * bg.getHeight(),
20); //img, x, y, anchor
}
if (top != null) {
bGraphic.setClip(x, mapInfo[index + 2 * j + 1], key,
top.getHeight()); // x, y, width, height
bGraphic.drawImage(top, x - x % 16,
mapInfo[index + 2 * j + 1], 20); // 16 is the width of the pic
}
}
x++;
index = index + num + 1;
}
}
//System.out.println("before set clip");
bGraphic.setClip(cx, cy, cw, ch);
//System.out.println("topLine.length = " + topLine.length);
for (int i = 0; i < topLine.length; i++) {
topLine[i] = (short) Math.min( m_nHeight + 1,
getDownNotNull(i, 0));
//System.out.println("topLine["+i+"]"+topLine[i]);
}
mapInfo = null;
}
public void paint(Graphics g1) {
if (mapImage != null)
g1.drawImage(mapImage, mapArray.m_nX, mapArray.m_nY, 20);
}
//@parm k1 : 导弹爆炸效果类
//这个函数对爆炸以后对地形的破坏的处理
public void exacuteCrash(int x, int y, int radius) { //爆炸中心坐标
//System.out.println("crash in x = " + x + "; y = " + y + "; radius = " +
//radius);
try {
Graphics bGraphic = mapImage.getGraphics();
//bGraphic.setColor(255, 255, 255);
//爆炸产生的效果是一个类似圆形区域
for (int i1 = x - radius; i1 < x + radius; i1++) {
for (int j1 = y - radius; j1 < y + radius; j1++) {
//距离的平方不要大于radius平方，和i1不能超过屏幕的宽度j和i1要大于0和j1小于高度g以及那个像素有东西
if ( (i1 - x) * (i1 - x) +
(j1 - y) * (j1 - y) < radius * radius &&
i1 < mapArray.getWidth() && j1 >= 0 &&
i1 >= 0 &&
j1 <
mapArray.getHeight()
/*&& mapArray[i1][j1] == 1/**/) {
//mapArray[i1][j1] = 0;
//System.out.println("set crash point : x = " + i1 + " y = " + j1);
mapArray.reSet(i1, j1 );
//System.out.println("get : mapArray.get(i1, j1 ) = " + mapArray.get(i1, j1 ));
bGraphic.setColor(m_nColor);
bGraphic.drawLine(i1 - mapArray.m_nX, j1 - mapArray.m_nY, i1 - mapArray.m_nX, j1 - mapArray.m_nY );
}
}
/*if(i1 == x + radius -1){
//System.out.println("finish mod map");
}*/
}
}
catch (ArrayIndexOutOfBoundsException arrayindexoutofboundsexception) {
arrayindexoutofboundsexception.printStackTrace();
}
for (int i = x - radius; i < x + radius; i++) {
if (i >= 0 && i < Main.displayable.MAP_WIDTH) {
topLine[i] = (short) Math.min(m_nHeight + 1,
getDownNotNull(i, 0));
}
}
}
public int getUpNull(int x, int initY) { // 求出从送入的参数为坐标的点向上的第一个空点的坐标！（包含送入的点）
for (int i = initY - 1; i >= mapArray.m_nY; i--) {
//System.out.println((initY -1 ) + "*******" + mapArray.m_nY);
//System.out.println("mapArray[" + (x - 1) + "][" + i + "] = " +
//mapArray[x - 1][i]);
if(i < mapArray.getHeight()){
if (x >= mapArray.m_nX && x < mapArray.getWidth()) {
if (mapArray.get(x, i) == 0) { //mapArray[x - 1][i] == 0) {
//System.out.println("upNull: x : " + x + " y = " + i + " " + mapArray.get(x, i));
return i;
}
}
/*else {
return 1000;
}*/
}
}
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