作为介绍，我的应用程序是一个飞扬的鸟式游戏。你在屏幕的底部和顶部有火，你必须在正确的时间跳，以免被击中。你有3个不同的冰淇淋甜筒。每个高度不同。每当冰淇淋与火碰撞时，它就会降低高度。
我遇到的问题是每当冰淇淋的高度降低时，边界框似乎都没有更新，即使我认为我的updateRect（）逻辑是正确的。 关于冰淇淋的顶部边界和火的底部边界，具有较小高度的冰淇淋似乎在屏幕上可视化，但它们的边界框似乎与最高的冰淇淋相匹配。
我注意到了这一点，因为当我使用最高的冰淇淋时，似乎我可以非常接近顶部的火焰而不会发生碰撞。但是当我使用较短的冰淇淋时，即使间隙看起来比最高的冰淇淋还要大，我仍然可以碰撞。
这些是我认为与此问题相关的代码
private InfJIceCream iceCream;
private ArrayList<Fire> lowFires;
private ArrayList<Fire> highFires;
private static int IC1_HEIGHT = 77;
private static int IC2_HEIGHT= 102;
private static int IC3_HEIGHT = 127;
private static int FIRE_WIDTH = 60;
private static int FIRE_HEIGHT = 60;
@Override
public void init() {
/* In order to align the icecream properly on the y-axis, I replaced 45(The height of the ground) with 44 because
* when 45 is part of the equation, it seems as if the iceCreams drops for a bit when initialized
* or does some sort of funny business
*
* This detail is virtually irrelevant but I feel as if 44 does a better job in making sure
* the iceCream is on the ground at the beginning of the gameplay
*/
//InfJIceCream(x,y,width,height);
iceCream = new InfJIceCream(160, GameMainActivity.GAME_HEIGHT - 44
- IC3_HEIGHT, ICECREAM_WIDTH, IC3_HEIGHT);
lowFires = new ArrayList<Fire>();
highFires = new ArrayList<Fire>();
for (int i = 0; i < 5; i++) {
Fire lowFire = new Fire(i * 200, Fire.LOWER_Y, FIRE_WIDTH, FIRE_HEIGHT);
Fire highFire = new Fire(i * 300, Fire.UPPER_Y, FIRE_WIDTH, FIRE_HEIGHT);
lowFires.add(i, lowFire);
highFires.add(i, highFire);
}
iceCream3 = true;
}
private void renderFire(Painter g) {
for (Fire fire : lowFires) {
if (fire.isVisible()) {
g.drawImage(Assets.fire, (int) fire.getX(), (int) fire.getY(), FIRE_WIDTH, FIRE_HEIGHT);
if (Rect.intersects(iceCream.getRect(), fire.getRect())) {
fire.resetLow();
}
}
}
for (Fire fire : highFires) {
if (fire.isVisible()) {
g.drawImage(Assets.fire, (int) fire.getX(), (int) fire.getY(), FIRE_WIDTH, FIRE_HEIGHT);
if (Rect.intersects(iceCream.getRect(), fire.getRect())) {
fire.resetHigh();
}
}
}
}
private void renderIceCream(Painter g) {
/*
iceCream3 is true by default
*/
//Checking for collisions with the fire on the ground
for (Fire fire : lowFires){
if (iceCream3) {
g.drawImage(Assets.iceCream3, (int) iceCream.getX(), (int) iceCream.getY(), ICECREAM_WIDTH, IC3_HEIGHT);
if (fire.isVisible() && Rect.intersects(iceCream.getRect(), fire.getRect())) {
iceCream3 = false;
iceCream2 = true;
}
} else if (iceCream2) {
g.drawImage(Assets.iceCream2, (int) iceCream.getX(), (int) iceCream.getY() + 25, ICECREAM_WIDTH, IC2_HEIGHT);
if (fire.isVisible() && Rect.intersects(iceCream.getRect(), fire.getRect())) {
iceCream2 = false;
iceCream1 = true;
}
} else if (iceCream1) {
g.drawImage(Assets.iceCream1, (int) iceCream.getX(), (int) iceCream.getY() + 50, ICECREAM_WIDTH, IC1_HEIGHT);
if (fire.isVisible() && Rect.intersects(iceCream.getRect(), fire.getRect())) {
setCurrentState(new GameOverState(playerScore/100));
}
}}
// Checking for collisions with the fire above gounnd.
for (Fire fire : highFires){
if (iceCream3) {
g.drawImage(Assets.iceCream3, (int) iceCream.getX(), (int) iceCream.getY(), ICECREAM_WIDTH, IC3_HEIGHT);
if (fire.isVisible() && Rect.intersects(iceCream.getRect(), fire.getRect())) {
iceCream3 = false;
iceCream2 = true;
}
} else if (iceCream2) {
g.drawImage(Assets.iceCream2, (int) iceCream.getX(), (int) iceCream.getY() + 25, ICECREAM_WIDTH, IC2_HEIGHT);
if (fire.isVisible() && Rect.intersects(iceCream.getRect(), fire.getRect())) {
iceCream2 = false;
iceCream1 = true;
}
} else if (iceCream1) {
g.drawImage(Assets.iceCream1, (int) iceCream.getX(), (int) iceCream.getY() + 50, ICECREAM_WIDTH, IC1_HEIGHT);
if (fire.isVisible() && Rect.intersects(iceCream.getRect(), fire.getRect())) {
setCurrentState(new GameOverState(playerScore/100));
}
}}
}
这是全班。
import android.graphics.Color;
import android.graphics.Rect;
import android.graphics.Typeface;
import android.view.MotionEvent;
import java.util.ArrayList;
import rect.draw.gametest.Assets;
import rect.draw.gametest.GameMainActivity;
import rect.draw.gametest.model.Fire;
import rect.draw.gametest.model.InfJIceCream;
import rect.draw.gametest.model.util.Painter;
public class HardState extends State {
private InfJIceCream iceCream;
private ArrayList<Fire> lowFires;
private ArrayList<Fire> highFires;
private int cloudX = 0;
private int cloudY = 100;
private int playerScore = 1;
private int fireSpeed = -200;
private static int ICECREAM_WIDTH = 38;
private static int IC1_HEIGHT = 77;
private static int IC2_HEIGHT= 102;
private static int IC3_HEIGHT = 127;
private static int FIRE_WIDTH = 60;
private static int FIRE_HEIGHT = 60;
public boolean iceCream1,iceCream2,iceCream3;
private float recentTouchY;
@Override
public void init() {
/* In order to align the icecream properly on the y-axis, I replaced 45(The height of the ground) with 44 because
* when 45 is part of the equation, it seems as if the iceCreams drops for a bit when initialized
* or does some sort of funny business
*
* This detail is virtually irrelevant but I feel as if 44 does a better job in making sure
* the iceCream is on the ground at the beginning of the gameplay
*/
iceCream = new InfJIceCream(160, GameMainActivity.GAME_HEIGHT - 44
- IC3_HEIGHT, ICECREAM_WIDTH, IC3_HEIGHT);
lowFires = new ArrayList<Fire>();
highFires = new ArrayList<Fire>();
for (int i = 0; i < 5; i++) {
// The y position initialization for the fires are irrelevant because they are invisible
// until the resetLow() method is called. Which will then change the y position
Fire lowFire = new Fire(i * 200, Fire.LOWER_Y, FIRE_WIDTH, FIRE_HEIGHT);
Fire highFire = new Fire(i * 300, Fire.UPPER_Y, FIRE_WIDTH, FIRE_HEIGHT);
lowFires.add(i, lowFire);
highFires.add(i, highFire);
}
iceCream3 = true;
}
@Override
public void update(float delta) {
for(Fire fire: lowFires){
fire.update(delta, fireSpeed);
}
for(Fire fire: highFires){
fire.update(delta,fireSpeed);
}
playerScore += 1;
iceCream.update(delta);
}
@Override
public void render(Painter g) {
g.setColor(Color.rgb(30, 144, 255));
g.fillRect(0, 0, GameMainActivity.GAME_WIDTH,
GameMainActivity.GAME_HEIGHT);
renderSun(g);
renderClouds(g);
g.drawImage(Assets.mountains, 0, 81);
g.drawImage(Assets.grass, 0, 405);
g.setColor(Color.BLACK);
renderSwipeUp(g);
renderFire(g);
renderScore(g);
renderIceCream(g);
}
private void renderSwipeUp(Painter g){
for(Fire fire : lowFires) {
if (!fire.isVisible()) {
g.drawImage(Assets.swipeUp, 200, 15, 200, 230);
}
// All fires in the Array have to return isVisible = true before the swipeUp image goes away
}
}
private void renderScore(Painter g) {
g.setFont(Typeface.SANS_SERIF, 25);
g.setColor(Color.BLACK);
g.drawString("" + playerScore / 100, 20, 30);
}
private void renderFire(Painter g) {
for (Fire fire : lowFires) {
if (fire.isVisible()) {
g.drawImage(Assets.fire, (int) fire.getX(), (int) fire.getY(), FIRE_WIDTH, FIRE_HEIGHT);
if (Rect.intersects(iceCream.getRect(), fire.getRect())) {
fire.resetLow();
}
}
}
for (Fire fire : highFires) {
if (fire.isVisible()) {
g.drawImage(Assets.fire, (int) fire.getX(), (int) fire.getY(), FIRE_WIDTH, FIRE_HEIGHT);
if (Rect.intersects(iceCream.getRect(), fire.getRect())) {
fire.resetHigh();
}
}
}
}
private void renderIceCream(Painter g) {
/*
iceCream3 is true by default
*/
//Checking for collisions with the fire on the ground
for (Fire fire : lowFires){
if (iceCream3) {
g.drawImage(Assets.iceCream3, (int) iceCream.getX(), (int) iceCream.getY(), ICECREAM_WIDTH, IC3_HEIGHT);
if (fire.isVisible() && Rect.intersects(iceCream.getRect(), fire.getRect())) {
iceCream3 = false;
iceCream2 = true;
}
} else if (iceCream2) {
g.drawImage(Assets.iceCream2, (int) iceCream.getX(), (int) iceCream.getY() + 25, ICECREAM_WIDTH, IC2_HEIGHT);
if (fire.isVisible() && Rect.intersects(iceCream.getRect(), fire.getRect())) {
iceCream2 = false;
iceCream1 = true;
}
} else if (iceCream1) {
g.drawImage(Assets.iceCream1, (int) iceCream.getX(), (int) iceCream.getY() + 50, ICECREAM_WIDTH, IC1_HEIGHT);
if (fire.isVisible() && Rect.intersects(iceCream.getRect(), fire.getRect())) {
setCurrentState(new GameOverState(playerScore/100));
}
}}
// Checking for collisions with the fire above gounnd.
for (Fire fire : highFires){
if (iceCream3) {
g.drawImage(Assets.iceCream3, (int) iceCream.getX(), (int) iceCream.getY(), ICECREAM_WIDTH, IC3_HEIGHT);
if (fire.isVisible() && Rect.intersects(iceCream.getRect(), fire.getRect())) {
iceCream3 = false;
iceCream2 = true;
}
} else if (iceCream2) {
g.drawImage(Assets.iceCream2, (int) iceCream.getX(), (int) iceCream.getY() + 25, ICECREAM_WIDTH, IC2_HEIGHT);
if (fire.isVisible() && Rect.intersects(iceCream.getRect(), fire.getRect())) {
iceCream2 = false;
iceCream1 = true;
}
} else if (iceCream1) {
g.drawImage(Assets.iceCream1, (int) iceCream.getX(), (int) iceCream.getY() + 50, ICECREAM_WIDTH, IC1_HEIGHT);
if (fire.isVisible() && Rect.intersects(iceCream.getRect(), fire.getRect())) {
setCurrentState(new GameOverState(playerScore/100));
}
}}
}
private void renderSun(Painter g) {
g.setColor(Color.rgb(255, 165, 0));
g.fillOval(715, -85, 170, 170);
g.setColor(Color.YELLOW);
g.fillOval(725, -75, 150, 150);
}
private void renderClouds(Painter g) {
g.drawImage(Assets.cloud1, cloudX, cloudY, 100, 60);
cloudX += 4;
if (cloudX > 950) {
cloudX = -100;
}
}
@Override
public boolean onTouch(MotionEvent e, int scaledX, int scaledY) {
if (e.getAction() == MotionEvent.ACTION_DOWN) {
recentTouchY = scaledY;
} else if (e.getAction() == MotionEvent.ACTION_UP) {
if (scaledY - recentTouchY < -50) {
iceCream.jump();
} else if (scaledY - recentTouchY > 50) {
}
}
return true;
}
}