capsule.java

J2ME做的打砖块游戏,是学校的课程项目

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.util.Random;
import java.lang.System;

public class Capsule extends MoveObject
{
	
	private float right_r, left_r;

	private float acc_r = 0.5f;

	private RandomG randomG = new RandomG();

	private boolean collisioned;

	private boolean used = false;

	public Capsule(String path, int x, int y, float vx, float vy, int type)
	{
                
		super(path, x, y, vx, vy, type);
                      
	}

	
	public boolean CollisionWithObject(NormalObject ob)
	{
		float temp;
		collisioned = false;
		
		if ((ob.x - this.x - this.cx) < 3 && (ob.x - this.x - this.cx) > -1)
		{
			if ((this.y + this.cy >= ob.y) && (this.y <= ob.y + ob.cy))
			{
				if (this.vx - ob.vx > 0.0f)
				{
					collisioned = true;
					this.vx = -1.0f * (this.vx - ob.vx);
					ob.vx = -0.4f * ob.vx;
				}
			}
		}
		else
			if ((this.x - (ob.x + ob.cx)) < 3 && (this.x - (ob.x + ob.cx)) > -1)
			{
				if ((this.y + this.cy >= ob.y) && (this.y <= ob.y + ob.cy))
				{
					if (ob.vx - this.vx > 0.0f)
					{
						collisioned = true;
						this.vx = 1.0f * (ob.vx - this.vx);
						ob.vx = -0.4f * ob.vx;
					}
				}
			}
			else
				if ((ob.y - this.y - this.cy) < 2 && (ob.y - this.y - this.cy) > 0)
				{
					if ((this.x + this.cx >= ob.x) && (this.x <= ob.x + ob.cx))
					{
						if (this.vy - ob.vy > 0.0f)
						{
							collisioned = true;
							this.vy = -1.0f * (this.vy - ob.vy);
							this.vx += ((float)(randomG.nextG(5) % 30 - 15)) / 80.0f;
							this.vx += ob.vx * 0.6;
						}
					}
				}
				else
					if ((this.y - (ob.y + ob.cy)) < 2 && (this.y - (ob.y + ob.cy)) > 0)
					{
						if ((this.x + this.cx >= ob.x) && (this.x < ob.x + ob.cx))
						{
							if (ob.vy - this.vy > 0.0f)
							{
								collisioned = true;
								this.vy = 1.0f * (ob.vy - this.vy);
								this.vx += ((float)(randomG.nextG(5) % 30 - 15)) / 80.0f;
								this.vx += ob.vx * 0.6;
							}
						}
					}
		return collisioned;
	}

	public void generateMove()
	{
		if ((vx - (int)vx) > 0.5f)
			x += ((int)vx + 1);
		else
			x += (int)vx;

		if ((vy - (int)vy) > 0.5f)
			y += ((int)vy + 1);
		else
			y += (int)vy;
	}

	public void use()
	{
		this.used = true;
	}


	public boolean isUsed()
	{
		return this.used;
	}
}