player.java

Android开发精典案例60个

package com.pg;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.view.KeyEvent;

/**
 * @author Himi
 *
 */
public class Player {
	//主角的血量与血量位图
	//默认3血
	private int playerHp = 3;
	private Bitmap bmpPlayerHp;
	//主角的坐标以及位图
	public int x, y;
	private Bitmap bmpPlayer;
	//主角移动速度
	private int speed = 5;
	//主角移动标识（基础章节已讲解，你懂得）
	private boolean isUp, isDown, isLeft, isRight;
	//碰撞后处于无敌时间
	//计时器
	private int noCollisionCount = 0;
	//因为无敌时间
	private int noCollisionTime = 60;
	//是否碰撞的标识位
	private boolean isCollision;

	//主角的构造函数
	public Player(Bitmap bmpPlayer, Bitmap bmpPlayerHp) {
		this.bmpPlayer = bmpPlayer;
		this.bmpPlayerHp = bmpPlayerHp;
		x = MySurfaceView.screenW / 2 - bmpPlayer.getWidth() / 2;
		y = MySurfaceView.screenH - bmpPlayer.getHeight();
	}

	//主角的绘图函数
	public void draw(Canvas canvas, Paint paint) {
		//绘制主角
		//当处于无敌时间时，让主角闪烁
		if (isCollision) {
			//每2次游戏循环，绘制一次主角
			if (noCollisionCount % 2 == 0) {
				canvas.drawBitmap(bmpPlayer, x, y, paint);
			}
		} else {
			canvas.drawBitmap(bmpPlayer, x, y, paint);
		}
		//绘制主角血量
		for (int i = 0; i < playerHp; i++) {
			canvas.drawBitmap(bmpPlayerHp, i * bmpPlayerHp.getWidth(), MySurfaceView.screenH - bmpPlayerHp.getHeight(), paint);
		}
	}

	//实体按键
	public void onKeyDown(int keyCode, KeyEvent event) {
		if (keyCode == KeyEvent.KEYCODE_DPAD_UP) {
			isUp = true;
		}
		if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {
			isDown = true;
		}
		if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) {
			isLeft = true;
		}
		if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) {
			isRight = true;
		}
	}

	//实体按键抬起
	public void onKeyUp(int keyCode, KeyEvent event) {
		if (keyCode == KeyEvent.KEYCODE_DPAD_UP) {
			isUp = false;
		}
		if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {
			isDown = false;
		}
		if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) {
			isLeft = false;
		}
		if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) {
			isRight = false;
		}
	}

	//主角的逻辑
	public void logic() {
		//处理主角移动
		if (isLeft) {
			x -= speed;
		}
		if (isRight) {
			x += speed;
		}
		if (isUp) {
			y -= speed;
		}
		if (isDown) {
			y += speed;
		}
		//判断屏幕X边界
		if (x + bmpPlayer.getWidth() >= MySurfaceView.screenW) {
			x = MySurfaceView.screenW - bmpPlayer.getWidth();
		} else if (x <= 0) {
			x = 0;
		}
		//判断屏幕Y边界
		if (y + bmpPlayer.getHeight() >= MySurfaceView.screenH) {
			y = MySurfaceView.screenH - bmpPlayer.getHeight();
		} else if (y <= 0) {
			y = 0;
		}
		//处理无敌状态
		if (isCollision) {
			//计时器开始计时
			noCollisionCount++;
			if (noCollisionCount >= noCollisionTime) {
				//无敌时间过后，接触无敌状态及初始化计数器
				isCollision = false;
				noCollisionCount = 0;
			}
		}
	}

	//设置主角血量
	public void setPlayerHp(int hp) {
		this.playerHp = hp;
	}

	//获取主角血量
	public int getPlayerHp() {
		return playerHp;
	}

	//判断碰撞(主角与敌机)
	public boolean isCollsionWith(Enemy en) {
		//是否处于无敌时间
		if (isCollision == false) {
			int x2 = en.x;
			int y2 = en.y;
			int w2 = en.frameW;
			int h2 = en.frameH;
			if (x >= x2 && x >= x2 + w2) {
				return false;
			} else if (x <= x2 && x + bmpPlayer.getWidth() <= x2) {
				return false;
			} else if (y >= y2 && y >= y2 + h2) {
				return false;
			} else if (y <= y2 && y + bmpPlayer.getHeight() <= y2) {
				return false;
			}
			//碰撞即进入无敌状态
			isCollision = true;
			return true;
			//处于无敌状态，无视碰撞
		} else {
			return false;
		}
	}
	//判断碰撞(主角与敌机子弹)
	public boolean isCollsionWith(Bullet bullet) {
		//是否处于无敌时间
		if (isCollision == false) {
			int x2 = bullet.bulletX;
			int y2 = bullet.bulletY;
			int w2 = bullet.bmpBullet.getWidth();
			int h2 = bullet.bmpBullet.getHeight();
			if (x >= x2 && x >= x2 + w2) {
				return false;
			} else if (x <= x2 && x + bmpPlayer.getWidth() <= x2) {
				return false;
			} else if (y >= y2 && y >= y2 + h2) {
				return false;
			} else if (y <= y2 && y + bmpPlayer.getHeight() <= y2) {
				return false;
			}
			//碰撞即进入无敌状态
			isCollision = true;
			return true;
			//处于无敌状态，无视碰撞
		} else {
			return false;
		}
	}
}