📄 playcanvas.java
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import javax.microedition.lcdui.*;
import java.util.Random;
import mmae.ui.*;
import mmae.game.Score;
import com.nokia.mid.ui.*;
public class PlayCanvas extends XCanvas {
private static int WIDTH ;
private static int HEIGHT ;
boolean gameover;
ImageFont font;
private static boolean gun_left;
private static boolean gun_right;
private static boolean fire[] = new boolean[4];
private static boolean win = false;
private static int gun_x; //大炮的X坐标
private static int gun_y; //大炮的Y坐标
private static int shot_x[] = new int[4]; //炮弹的X坐标
private static int shot_y[] = new int[4]; //炮弹的Y坐标
private int shotNum;
private static int gun_width;
private static int gun_height;
private static int cdegree = 0;
private static int tdegree[] = {0,0,0,0}; //temp degree
private static Image[] gun = new Image[3]; //大炮
private static Image cgun; //当前角度的大炮
private static Image bracket; //支架
private static Image plane[] = new Image[6];
private static Image shot[] = new Image[4]; //炮弹
private static Image bomb; //炸弹
private static Image[] explode = new Image[6]; //爆炸效果
private static Image[] bg = new Image[6];
private static final Font fs = Font.getFont(64, 0, 8);
private static final Font fl = Font.getFont(64, 1, 16);
private static int stage = 0;
private static int score ;
private static int life ;
private static int left_plane ;
private static int degree ;
int rotatedelaycount = 0;
int planeSpeed ;
int bombX ;
Random rand;
int fly; //whitch fly
int tfly;
int interval;
int fireinterval;
private static boolean [] isFly = {false,false,false,false,false,false}; //fly flag
private static boolean [] isSendBomb = {false,false,false,false,false,false};
private static boolean [] isBombShot = {false,false,false,false,false,false};
private static boolean [] isBombGun = {false,false,false,false,false,false};
private static boolean [] isBombGround = {false,false,false,false,false,false};
private static boolean [] isShotPlane = {false,false,false,false,false,false};
private static boolean [] isShotBomb = {false,false,false,false,false,false};
private static int [] hitPlane = {0,0,0,0,0,0};
private static int [] hitBomb = {0,0,0,0,0,0};
private static int [] hitGun = {0,0,0,0,0,0};
private static int [] hitGround = {0,0,0,0,0,0};
private static int [] tBombX = {0,0,0,0,0,0};
int difficulty;
private static int flip;
private static int start_tx;
private static boolean showscore = false ;
private static boolean isNewStage = false ;
private String stagelogo;
boolean out[] = {false,false,false,false,false,false};
int start_x;
int step_x;
int bomb_move_step_h;
int explodecount;
boolean rotate = true;
private int stageinterval;
private int maxstage;
private Image offimg;
private Graphics offg;
private DirectGraphics dg;
//分别对应飞机起飞的初始X，Y,投炸弹的初始X,Y,是否投弹(用0，1表示),飞机飞行的速度,飞机是否爆炸,炸弹是否爆炸(炸弹可见),爆炸效果图计数
// 0,1 2,3, 4, 5, 6, 7 8
int[][] plane_XY = {
// 0 1 2 3 4 5 6 7 8
{WIDTH, 0, 0, 0, 0, 0, 0, 0, 0}
, {0, 0, 0, 0, 0, 0, 0, 0, 0}
, {WIDTH, 0, 0, 0, 0, 0, 0, 0, 0}
, {0, 0, 0, 0, 0, 0, 0, 0, 0}
, {WIDTH, 0, 0, 0, 0, 0, 0, 0, 0}
, {0, 0, 0, 0, 0, 0, 0, 0, 0}
};
public PlayCanvas()
{
/***********************************************
以下为游戏类初使化内容
***********************************************/
gun[0] = go.getImage("/Gun0.png");
gun[1] = go.getImage("/Gun30.png");
gun[2] = go.getImage("/Gun60.png");
bracket = go.getImage("/Bracket.png");
shot[0] = go.getImage("/Shot.png");
shot[1] = go.getImage("/Shot.png");
shot[2] = go.getImage("/Shot.png");
shot[3] = go.getImage("/Shot.png");
plane[0] = go.getImage("/Plane_1.png");
plane[1] = go.getImage("/Plane_2.png");
plane[2] = go.getImage("/Plane_3.png");
plane[3] = go.getImage("/Plane_1.png");
plane[4] = go.getImage("/Plane_2.png");
plane[5] = go.getImage("/Plane_3.png");
explode[0] = go.getImage("/Explosion1.png");
explode[1] = go.getImage("/Explosion2.png");
explode[2] = go.getImage("/Explosion3.png");
explode[3] = go.getImage("/Explosion4.png");
explode[4] = go.getImage("/Explosion5.png");
explode[5] = go.getImage("/Explosion6.png");
bomb = go.getImage("/Bomb.png");
bg[0] = go.getImage("/Bg1.png");
bg[1] = go.getImage("/Bg2.png");
bg[2] = go.getImage("/Bg3.png");
bg[3] = go.getImage("/Bg1.png");
bg[4] = go.getImage("/Bg2.png");
bg[5] = go.getImage("/Bg3.png");
font = new ImageFont(go.getImage("/Font.png"),8);
font.setOffset(-1);
offimg = Image.createImage(getWidth(), getHeight());
offg = offimg.getGraphics();
offg.setFont(PlayCanvas.fs);
dg = DirectUtils.getDirectGraphics(offg);
WIDTH = getWidth();
HEIGHT = getHeight();
gun_width = gun[0].getWidth();
gun_height = gun[0].getHeight();
for(int j=0;j<shot.length;j++){
shot_x[j] = WIDTH / 2;
shot_y[j] = HEIGHT * 4 / 5 + 5;
}
rand = new Random();
init(); //初始化游戏
initPlot(); //初始化游戏关数
difficulty = 84; //难度调节数
interval = 50; //线程的时间间隔
maxstage = 6; //最大关数
start(35);
}
public void init(){ //初始化游戏
win = false;
gameover = false;
isNewStage = true;
stage = 0;
score = 0;
bomb_move_step_h = 1;
life = 10;
}
private void initPlot(){ //初始化关卡
//life = 10; //每关中 玩家的命数
left_plane = 30; //每关中 玩家需要击落的飞机数
degree = 0; //大炮在每关中初始的角度 0表示朝上
isNewStage = true; //新一关的开始 控制着过关后 显示下一关是第几关
difficulty -= 12; //每过一次 难度的修改值 通过改变飞机出场的频率来实现
stageinterval = 0; //用于每关时延的临时计数
stage++; //过关后 关数递增
shotNum = 0;
bomb_move_step_h ++; //炸弹下落时的速度 每一关加一
fireinterval = 0;
for(int j=0;j<shot.length;j++){
fire[j] = false; //控制是否开火
shotReset(j);
}
for (int i = 0; i < plane.length; i++) {
planeReset(i);
}
StringBuffer sb = new StringBuffer("MISSION ");
sb.append(String.valueOf(stage));
stagelogo=sb.toString();
}
public void paint(Graphics g) {
g.setClip(0,0,getWidth(),getHeight());
if(!isStop())
{
/***********************************************
以下是游戏进行过程绘图
***********************************************/
g.setColor(0);
g.fillRect(0,0,getWidth(),getHeight());
offg.drawImage(bg[stage-1], 0, 0, offg.LEFT | offg.TOP);
if (isNewStage) { //新一关
//offg.setColor(255,255,255);
//offg.drawString(stagelogo+"",WIDTH/2+1,HEIGHT/2+1,g.HCENTER|g.TOP);
//offg.setColor(255,255,255);
//offg.drawString(stagelogo+"",WIDTH/2,HEIGHT/2,g.HCENTER|g.TOP);
font.drawString(offg, stagelogo, getWidth()/2-32, getHeight()/2-10);
}
else { //一般情况
offg.setColor(0x000000); //检测完各飞机的状态 准备再次重画游戏当前的状态值
offg.setFont(fs);
font.drawString(offg, "SCORE: "+score, 10, 5);
font.drawString(offg, "STAGE: "+stage , WIDTH-65, 5);
font.drawString(offg, "TASK: "+left_plane, 10, 15);
font.drawString(offg, "LIFT: "+life, WIDTH-65, 15);
//offg.drawString("Score: " + score , 10, 5, offg.LEFT | offg.TOP); //顶部的状态行
//offg.drawString("Stage: " + stage , WIDTH-10, 5, offg.RIGHT | offg.TOP);
//offg.drawString("Task: " + left_plane , 10, 20,offg.LEFT | offg.TOP);
//offg.drawString("Life: " + life , WIDTH-10, 20, offg.RIGHT | offg.TOP);
//for(int i=0;i<plane.length;i++){
// offg.drawString(i+"F:" + isFly[i] + "BS:"+isBombShot[i] + " G:"+isBombGun[i] + " R:"+isBombGround[i] + " S:"+isSendBomb[i], 0, (3+i)*12,offg.LEFT | offg.TOP);
//}
//炮弹
for (int j = 0; j < shot.length; j++) {
if (fire[j]) {
offg.drawImage(shot[j], shot_x[j], shot_y[j], offg.HCENTER | offg.TOP);
}
}
offg.drawImage(bracket, WIDTH / 2 - 5, HEIGHT * 4 / 5 + 10, offg.HCENTER | offg.TOP); //画大炮支架及大炮
dg.drawImage(cgun, WIDTH / 2, HEIGHT * 4 / 5, offg.HCENTER | offg.TOP, cdegree);
offg.drawImage(bracket, WIDTH / 2, HEIGHT * 4 / 5 + 10, offg.HCENTER | offg.TOP);
//飞机 炸弹
//打中炮弹 大炮 地面 后的爆炸效果
for (int i = 0; i < plane.length; i++) {
if (i % 2 == 0) flip = 0; else flip = 8192;
if(isFly[i]) {
dg.drawImage(plane[i], plane_XY[i][0], plane_XY[i][1],
offg.TOP | offg.HCENTER, flip);
}
if (isShotPlane[i]) {
if (hitPlane[i] < explode.length) {
offg.drawImage(explode[hitPlane[i]], plane_XY[i][0],
plane_XY[i][1], offg.TOP | offg.HCENTER); //画出爆炸效果图
if (hitPlane[i] == 0)
updateLeftPlane(i);
hitPlane[i]++;
}
else if (hitBomb[i] >= explode.length) {
//hitPlane[i] = 0;
//isShotPlane[i] = false;
}
}
if (isSendBomb[i]) {
if (isBombShot[i]) {
if (hitBomb[i] < explode.length) {
offg.drawImage(explode[hitBomb[i]], plane_XY[i][2],
plane_XY[i][3], offg.TOP | offg.HCENTER); //画出爆炸效果图
hitBomb[i]++;
}else if (hitBomb[i] >= explode.length) {
//hitBomb[i] = 0;
isBombShot[i]=false;
isSendBomb[i] = false;
}
} else
if (isBombGun[i]) {
if (hitGun[i] < explode.length) {
offg.drawImage(explode[hitGun[i]], plane_XY[i][2],
plane_XY[i][3], offg.TOP | offg.HCENTER); //画出爆炸效果图
if(hitGun[i]==1) life--;
hitGun[i]++;
}else if (hitGun[i] >= explode.length) {
//hitGun[i] = 0;
isBombGun[i]=false;
isSendBomb[i] = false;
}
}else
if (isBombGround[i]) {
if (hitGround[i] < explode.length) {
offg.drawImage(explode[hitGround[i]], plane_XY[i][2],
plane_XY[i][3], offg.TOP | offg.HCENTER); //画出爆炸效果图
if(hitGround[i]==1) life--;
hitGround[i]++;
}else if (hitGround[i] >= explode.length) {
//hitGround[i] = 0;
isBombGround[i]= false;
isSendBomb[i] = false;
}
} else
{
offg.drawImage(bomb, plane_XY[i][2], plane_XY[i][3], offg.TOP | offg.HCENTER);
}
}
}
} //end 一般情况
g.drawImage(offimg, 0, 0, 20); //将临时画布一次画出来，避免屏幕抖动
}
else if(!isKill())
{
/***********************************************
以下游戏暂停过程绘图
***********************************************/
g.drawImage(go.getImage("/Pause.png"),getWidth()/2,getHeight()/2,g.HCENTER|g.VCENTER);
}
else
{
/***********************************************
以下游戏结束过程绘图
***********************************************/
g.drawImage(go.getImage("/Gameover.png"),getWidth()/2,getHeight()/2,g.HCENTER|g.VCENTER);
}
}
public void update() {
/***********************************************
以下是游戏线程处理
***********************************************/
checkStage();
if(!isNewStage) updatePos();
repaint(); //调用重画repaint()方法
serviceRepaints();
}
private void updatePos() {
rotateGun(); //转动大炮的瞄准角度
updateShot(); //更新炮弹
updatePlane(); //更新飞机的位置
updateState();
}
private void updateState(){
for (int i = 0; i < plane.length; i++) {
for(int j = 0;j<shot.length;j++){
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