Java 在android中从onTouchEvent获取X和Y值
我正在开发一款Android飞机射击游戏,我需要在玩家每次移动飞机时获得X和Y位置,以便检测碰撞 下面的类处理玩家飞机的移动Java 在android中从onTouchEvent获取X和Y值,java,android,Java,Android,我正在开发一款Android飞机射击游戏,我需要在玩家每次移动飞机时获得X和Y位置,以便检测碰撞 下面的类处理玩家飞机的移动 package com.pe44.dukes; import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.view.MotionEvent; public class DukesGame extends Activity { fi
package com.pe44.dukes;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.MotionEvent;
public class DukesGame extends Activity {
final DukesEngine gameEngine = new DukesEngine();
private DukesGameView gameView;
public static float playerPosX, playerPosY;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
gameView = new DukesGameView(this);
setContentView(gameView);
}
@Override
protected void onResume() {
super.onResume();
gameView.onResume();
}
@Override
protected void onPause() {
super.onPause();
gameView.onPause();
}
@Override
public boolean onTouchEvent(MotionEvent event) {
//
playerPosX = event.getX();
playerPosY = event.getY();
String SPposX = Float.toString(playerPosX);
String SPposY = Float.toString(playerPosY);
Log.i(SPposX, SPposY);
int height = DukesEngine.display.getHeight() / 4;
int playableArea = DukesEngine.display.getHeight() - height;
if (playerPosY > playableArea){
switch (event.getAction()){
case MotionEvent.ACTION_DOWN:
if(playerPosX < DukesEngine.display.getWidth() / 2){
DukesEngine.playerFlightAction = DukesEngine.player_turn_left;
}else{
DukesEngine.playerFlightAction = DukesEngine.player_turn_right;
}
break;
case MotionEvent.ACTION_UP:
DukesEngine.playerFlightAction = DukesEngine.PLAYER_RELEASE;
break;
}
}
return false;
}
public static float getPlayerX(){
return playerPosX;
}
public static float getPlayerY(){
return playerPosY;
}
}
这段代码是我为在renderer类中处理冲突检测而编写的
private void detectCollisionsOnPlayer(){
float playerPosX = DukesGame.getPlayerX();
float playerPosY = DukesGame.getPlayerY();
String posx = Float.toString(playerPosX);
String posy = Float.toString(playerPosX);
Log.d(posx,posy);
for (int d = 0; d < 3; d++){
for (int x = 0; x < DukesEngine.total_fighters + DukesEngine.total_jets + DukesEngine.total_warships - 1; x++ ){
if(enemies[x].posX == playerPosX && enemies[x].posY == playerPosY ){
Log.d("Game Over", "game over");
}
}
}
}
private void detectCollisionsOnPlayer(){
float playerPosX=DukesGame.getPlayerX();
float playerPosY=DukesGame.getPlayerY();
字符串posx=Float.toString(playerPosX);
字符串posy=Float.toString(playerPosX);
Log.d(posx,posy);
对于(int d=0;d<3;d++){
对于(int x=0;x
由于某些原因,X和Y值没有传递到我在DukesGame类中创建的两个方法中。有人能为这个问题提出解决方案吗?我建议您使用一个界面,而不是设置静态值。什么是
event.getX()
和另一个返回?每次触摸屏幕时,它都会获取播放器飞机的X和Y位置。我想传递的是,当你玩游戏时,屏幕上到底发生了什么,飞机刚刚坠落……触摸事件不起作用。或者是发生了别的事情。我查看了你的代码,我不明白为什么这些值没有得到更新……因为你已经声明了publicstaticfloatplayerposx,playerPosY代码>当你尝试DukesGames.playerPosX时会发生什么?
private void detectCollisionsOnPlayer(){
float playerPosX = DukesGame.getPlayerX();
float playerPosY = DukesGame.getPlayerY();
String posx = Float.toString(playerPosX);
String posy = Float.toString(playerPosX);
Log.d(posx,posy);
for (int d = 0; d < 3; d++){
for (int x = 0; x < DukesEngine.total_fighters + DukesEngine.total_jets + DukesEngine.total_warships - 1; x++ ){
if(enemies[x].posX == playerPosX && enemies[x].posY == playerPosY ){
Log.d("Game Over", "game over");
}
}
}
}