public void draw(Graphics g, Graphics g2d, double theta, int NEWY){
g.setColor(Color.orange);
int drawLocationX = character.x;
int drawLocationY = character.y-47;
double rotationRequired = Math.toRadians (theta);
double locationX = this.getWidth()/2;
double locationY = this.getHeight()/2;
AffineTransform tx = AffineTransform.getRotateInstance(rotationRequired, locationX, locationY);
AffineTransformOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_BILINEAR);
g2d.drawImage(op.filter(image, null), drawLocationX, NEWY, null);
}
public int getHeightWorld(int x){
//meant to find height of land at specified location
int highest = 0;
int checked = 0;
for(int c = panel.HEIGHT-1; c >= 0; c--){
if(this.inColRange(x)&& this.inRowRange(c))
if(LandList[c][x] == 2){
highest = c;
checked++;
}
}
return (1000 - highest);
}
public double getAngleWorldT1(){
//meant to find angle tank needs to be rotated at
int g = this.getHeightWorld(tank1.getNEWX());
int h = this.getHeightWorld((tank1.getWidth()+ tank1.getNEWX()));
double trythis = this.NewEquation();
int newg = tank1.getWidth()+ tank1.getNEWX();
int newh = tank2.getWidth()+ tank2.getNEWX();
double newery = (trythis*newg);
double newery2 = (trythis*tank1.getNEWX());
double newval = newery - newery2;
double u = 5;
double width = tank1.getWidth();
if(Math.abs(h-g) > tank1.getWidth()){
u = width/(g-h);
}
else{
u = (g-h)/width;
}
double p = 57.6846779*Math.asin(Math.toRadians(u));
return p;
}
public double NewEquation(){
int dividethis = 0;
int subtractthis = 0;
int numnegative = 0;
for(int what = 0; what < tank1.getWidth(); what++){
if(Math.abs(this.getHeightWorld(what)-this.getHeightWorld(what-1)) < 2){
dividethis += this.getHeightWorld(what);
if(this.getHeightWorld(what)-this.getHeightWorld(what-1) < 0){
numnegative++;
}
}
else{
subtractthis++;
}
}
dividethis = dividethis/(tank1.getWidth()-subtractthis);
if((numnegative - tank1.getWidth()) > tank1.getWidth()/2){
dividethis = dividethis*-1;
}
return dividethis;
}
public void draw(Graphics g) {
//MOVE TO DIFF METHOD
int newy = this.getHeightWorld(tank1.getNEWX()) - tank1.getHeight();
int newy2 = this.getHeightWorld(tank2.getNEWX()) - tank2.getHeight();
if( LandList[newy][tank1.getNEWX()] == 2){
while (LandList[newy][tank1.getNEWX()] == 2){
newy--;
// System.out.println("FIRST HERE");
// System.out.println(newy);
}
// System.out.println("FIRST");
}
if( LandList[newy+1][tank1.getNEWX()] != 2){
while (LandList[newy+1][tank1.getNEWX()] != 2){
newy++;
// System.out.println("SECOND HERE");
}
// System.out.println("SECOND");
}
//System.out.println("YESSSSS" +Math.toDegrees(this.getAngleWorldT1()) );
tank1.draw(g, g, Math.toDegrees(this.getAngleWorldT1()), newy - tank1.getHeight()-50);
tank2.draw(g, g, Math.toDegrees(this.getAngleWorldT2()), newy2 - tank2.getHeight());
// System.out.println("2");
for(int x = 0; x < platforms.size(); x++){
platforms.get(x).draw(g);
}
}
}
（对不起凌乱的代码。）
这是我用来设计坦克射击游戏的两个班级。在这一部分，我试图让图像根据它所在的土地旋转（出现在上坡或下坡）并且我不想在陆地内任何一块。 “LandList”是一个2D数组，如果有土地则值为2，如果没有土地则值为1。两个问题是A）在不正确的高度旋转而不是在所有点旋转 B）图像在某个高度切断
感谢您的帮助。
全部课程
public class World {
Land[][] land;
List<Land> platforms = new ArrayList<Land>();
private GraphicsPanel panel;
int[][] LandList = new int[800][1500];
private int delay = 30;
private Timer timer;
private Random r;
Tank tank1;
Tank tank2;
public World(GraphicsPanel marioPanel) {
panel = marioPanel;
land = new Land[panel.WIDTH][panel.HEIGHT-500-3];
setUpWorld();
setUpTimer();
}
private void setUpWorld() {
for(int r = 0; r < panel.WIDTH; r++){
for(int c = 0; c < panel.HEIGHT; c++){
LandList[c][r] = 1;
}
}
//tank not displaying
//a lot of stuff copied over
tank1 = new Tank(25,442,100,60,1);
tank2 = new Tank(700,442,100,60,2);
r = new Random();
int w = 0;
int n = 0;
for(int x = 0; x < panel.WIDTH; x+=5){
if(x > 0 && x < panel.WIDTH/6 +1){
//for(int y = (int) (500+(-(100*Math.random())*((x%2)+1))); y < panel.HEIGHT; y+=5){
for(int y = 500; y < panel.HEIGHT; y+=5){
Land creating = new Land(x, y, 5, 5);
platforms.add(creating);
for(int r = 0; r < 5; r++){
for(int c = 0; c < 5; c++){
if(inRowRange(x+r) && inColRange(y+c))
LandList[y+r][x+c] = 2;
}
}
}
}
if(x > panel.WIDTH/6 && x < 2*panel.WIDTH/6 +1){
//for(int y = (int) (500+(-(100*Math.random())*((x%2)+1))); y < panel.HEIGHT; y+=5){
for(int y = 500+ 4*w; y < panel.HEIGHT; y+=5){
Land creating = new Land(x, y, 5, 5);
platforms.add(creating);
for(int r = 0; r < 5; r++){
for(int c = 0; c < 5; c++){
if(inRowRange(y+r) && inColRange(x+c))
LandList[y+r][x+c] = 2;
}
}
}
w--;
}
if(x > 2*panel.WIDTH/6 && x < 3*panel.WIDTH/6 +1){
//for(int y = (int) (500+(-(100*Math.random())*((x%2)+1))); y < panel.HEIGHT; y+=5){
for(int y = 500+ 4*w; y < panel.HEIGHT; y+=5){
Land creating = new Land(x, y, 5, 5);
platforms.add(creating);
for(int r = 0; r < 5; r++){
for(int c = 0; c < 5; c++){
if(inRowRange(y+r) && inColRange(x+c))
LandList[y+r][x+c] = 2;
}
}
}
w++;
}
if(x > 3*panel.WIDTH/6 && x < 4*panel.WIDTH/6 +1){
//for(int y = (int) (500+(-(100*Math.random())*((x%2)+1))); y < panel.HEIGHT; y+=5){
for(int y = 500+ 4*n; y < panel.HEIGHT; y+=5){
Land creating = new Land(x, y, 5, 5);
platforms.add(creating);
for(int r = 0; r < 5; r++){
for(int c = 0; c < 5; c++){
if(inRowRange(y+r) && inColRange(x+c))
LandList[y+r][x+c] = 2;
}
}
}
n--;
}
if(x > 4*panel.WIDTH/6 && x < 5*panel.WIDTH/6 +1){
//for(int y = (int) (500+(-(100*Math.random())*((x%2)+1))); y < panel.HEIGHT; y+=5){
for(int y = 500+ 4*n; y < panel.HEIGHT; y+=5){
Land creating = new Land(x, y, 5, 5);
platforms.add(creating);
for(int r = 0; r < 5; r++){
for(int c = 0; c < 5; c++){
if(inRowRange(y+r) && inColRange(x+c))
LandList[y+r][x+c] = 2;
}
}
}
n++;
}
if(x > 5*panel.WIDTH/6){
//for(int y = (int) (500+(-(100*Math.random())*((x%2)+1))); y < panel.HEIGHT; y+=5){
for(int y = 500; y < panel.HEIGHT; y+=5){
Land creating = new Land(x, y, 5, 5);
platforms.add(creating);
for(int r = 0; r < 5; r++){
for(int c = 0; c < 5; c++){
if(inRowRange(y+r) && inColRange(x+c))
LandList[y+r][x+c] = 2;
// System.out.println(LandList[x+r][y+c]);
}
}
}
}
// else{
// for(int y = 500; y < panel.HEIGHT; y+=5){
// Land creating = new Land(x, y, 5, 5);
// platforms.add(creating);
// }
//
// }
}
for(int r = 0; r < panel.WIDTH; r++){
for(int c = 0; c < panel.HEIGHT; c++){
//System.out.println(LandList[r][c]);
}
}
for(int checked = 0; checked < panel.WIDTH; checked++){
System.out.println(this.getHeightWorld(checked));
}
// System.out.println(LandList);
}
private boolean inColRange(int i) {
// TODO Auto-generated method stub
return i>=0 && i<LandList[0].length;
}
private boolean inRowRange(int i) {
// TODO Auto-generated method stub
return i>=0 && i<LandList.length;
}
private void setUpTimer() {
timer = new Timer(delay, new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
// what should happen each time the timer goes off?
panel.repaint();
moveStuff();
checkHitBoxes();
//System.out.println(mario.getY());
}
});
timer.start();
}
protected void checkHitBoxes() {
}
protected void moveStuff() {
tank1.move();
panel.repaint();
}
public int getHeightWorld(int x){
//meant to find height of land at specified location
int highest = 0;
int checked = 0;
for(int c = panel.HEIGHT-1; c >= 0; c--){
if(this.inColRange(x)&& this.inRowRange(c))
if(LandList[c][x] == 2){
highest = c;
checked++;
}
}
return (1000 - highest);
}
public double getAngleWorldT1(){
//meant to find angle tank needs to be rotated at
int g = this.getHeightWorld(tank1.getNEWX());
int h = this.getHeightWorld((tank1.getWidth()+ tank1.getNEWX()));
double trythis = this.NewEquation();
int newg = tank1.getWidth()+ tank1.getNEWX();
int newh = tank2.getWidth()+ tank2.getNEWX();
double newery = (trythis*newg);
double newery2 = (trythis*tank1.getNEWX());
double newval = newery - newery2;
double u = 5;
double width = tank1.getWidth();
if(Math.abs(h-g) > tank1.getWidth()){
u = width/(g-h);
}
else{
u = (g-h)/width;
}
double p = 57.6846779*Math.asin(Math.toRadians(u));
return p;
}
public double getAngleWorldT2(){
int a = this.getHeightWorld(tank2.getNEWX());
int s = this.getHeightWorld((tank2.getWidth() + tank2.getNEWX() + 100) );
// a = 100;
// s = 700;
int o = (a-s)/tank2.getWidth();
//System.out.println(o);
double p = -57.6846779*(Math.asin(Math.toRadians(o)));
//System.out.println(p);
return p;
}
public double NewEquation(){
int dividethis = 0;
int subtractthis = 0;
int numnegative = 0;
for(int what = 0; what < tank1.getWidth(); what++){
if(Math.abs(this.getHeightWorld(what)-this.getHeightWorld(what-1)) < 2){
dividethis += this.getHeightWorld(what);
if(this.getHeightWorld(what)-this.getHeightWorld(what-1) < 0){
numnegative++;
}
}
else{
subtractthis++;
}
}
dividethis = dividethis/(tank1.getWidth()-subtractthis);
if((numnegative - tank1.getWidth()) > tank1.getWidth()/2){
dividethis = dividethis*-1;
}
return dividethis;
}
public void draw(Graphics g) {
//MOVE TO DIFF METHOD
int newy = this.getHeightWorld(tank1.getNEWX()) - tank1.getHeight();
int newy2 = this.getHeightWorld(tank2.getNEWX()) - tank2.getHeight();
if( LandList[newy][tank1.getNEWX()] == 2){
while (LandList[newy][tank1.getNEWX()] == 2){
newy--;
// System.out.println("FIRST HERE");
// System.out.println(newy);
}
// System.out.println("FIRST");
}
if( LandList[newy+1][tank1.getNEWX()] != 2){
while (LandList[newy+1][tank1.getNEWX()] != 2){
newy++;
// System.out.println("SECOND HERE");
}
// System.out.println("SECOND");
}
//System.out.println("YESSSSS" +Math.toDegrees(this.getAngleWorldT1()) );
tank1.draw(g, g, Math.toDegrees(this.getAngleWorldT1()), newy - tank1.getHeight()-50);
tank2.draw(g, g, Math.toDegrees(this.getAngleWorldT2()), newy2 - tank2.getHeight());
// System.out.println("2");
for(int x = 0; x < platforms.size(); x++){
platforms.get(x).draw(g);
}
}
}
public class Tank extends Moveable{
private boolean moveRight,moveLeft;
private String direction = "NONE";
private int dx =5;
//graphics
BufferedImage image = null;
private URL file;
private Rectangle character;
private Rectangle hitBox;
JLabel label = new JLabel();
private int NEWX;
public Tank(int x, int y, int w, int h, int color){
character = new Rectangle(x,y,w,h);
this.create(null,x,y,w,h);
NEWX = character.x;
BufferedImage img =null;
if(color == 1){
// file= getClass().getResource("pictures\\green_tank1");
try {
img = ImageIO.read(new File("green_tank1.png"));
image = img;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
else{
// file = getClass().getResource("pictures\\blue_tank1");
try {
img = ImageIO.read(new File("blue_tank1.png"));
image = img;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public void draw(Graphics g, Graphics g2d, double theta, int NEWY){
g.setColor(Color.orange);
int drawLocationX = character.x;
int drawLocationY = character.y-47;
double rotationRequired = Math.toRadians (theta);
double locationX = this.getWidth()/2;
double locationY = this.getHeight()/2;
AffineTransform tx = AffineTransform.getRotateInstance(rotationRequired, locationX, locationY);
AffineTransformOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_BILINEAR);
g2d.drawImage(op.filter(image, null), drawLocationX, NEWY, null);
//System.out.println("This is new X " + NEWX);
// label.setVisible(true);
// label.isOpaque();
// label.setBounds(character.x, character.y, character.width, character.height);
// label.repaint();
//g.drawImage(image, 0, 0, null);
// int centerx = character.x + character.width/2;
// int centery = character.y + character.height/2;
//
// int point1 = (int) (centerx + (character.width/2)*Math.cos(Math.toRadians(theta)) - (character.height/2)* Math.sin(Math.toRadians(theta)));
// int point2 = (int) (centery + (character.height/2)*Math.cos(Math.toRadians(theta))+(character.width/2)*Math.sin(Math.toRadians(theta)));
// int point3 =(int) (centerx - (character.width/2)*Math.cos(Math.toRadians(theta)) + (character.height/2)* Math.sin(Math.toRadians(theta)));
// int point4 = (int) (centery - (character.height/2)*Math.cos(Math.toRadians(theta))-(character.width/2)*Math.sin(Math.toRadians(theta)));
// //System.out.println(theta);
// g.drawImage(image, point1,point2,point3,point4, null);
//// System.out.println("3");
// Rotation information
// AffineTransform tx = AffineTransform.getRotateInstance(Math.toRadians (theta), character.x, character.y);
// AffineTransformOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_BILINEAR);
//
// // Drawing the rotated image at the required drawing locations
// g.drawImage(op.filter((BufferedImage) image, null), character.x, character.y, null);
// System.out.println(this.getX());
// System.out.println(this.getY());
// System.out.println(this.getWidth());
// System.out.println(this.getHeight());
// g.fillRect(this.getX(), this.getY(), this.getWidth(), this.getHeight());
// this.setBounds(this.getX(), this.getY(), this.getWidth(), this.getHeight());
//
}
public Rectangle getRect(){
return this.character;
}
public void move(){
if(moveLeft == true){
character.setBounds(character.x -2, character.y, character.width, character.height);
character.x = character.x -2;
NEWX += -2;
}
if(moveRight == true){
character.setBounds(character.x +2, character.y, character.width, character.height);
character.x = character.x +2;
NEWX += 2;
}
}
public void setDirection(String s){
this.direction = s;
String x = s.toUpperCase().substring(0, 1);
if(x.equals("L")){
//System.out.println(x);
moveLeft = true;
moveRight = false;
}
if(x.equals("R")){
moveRight = true;
moveLeft = false;
// System.out.println("im here");
}
else if(x.equals("N")){
moveRight = false;
moveLeft =false;
// System.out.println("I Got Here #2");
}
}
public String getDirection(){
return this.direction;
}
public int getNEWX(){
return this.NEWX;
}
}