npc.java

来自「J2ME编程的50个例子,适合掌上系统的编程」· Java 代码 · 共 44 行

package demo;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.game.Sprite;

public class Npc extends Sprite{
	public boolean m_bDialog = false;				//是否正在对话
	private String m_strText = null;				//对话的文字
	private long m_nDialogStartTime = 0;			//对话开始的时间
	Npc(Image image, int frameWidth, int frameHeight){
		super(image, frameWidth, frameHeight);	
	}
	//设置对话的文字
	public void SetText( String strText ){
		m_strText = null;
		m_strText = new String(strText);
	}
	//开启对话
	public void DialogStart(){
		m_nDialogStartTime = System.currentTimeMillis();
		m_bDialog = true;
	}
	//逻辑操作
	public void Logic(){
		if( !m_bDialog )
			return;
		long lTime = System.currentTimeMillis();
		if( lTime - m_nDialogStartTime > 3000 )
			m_bDialog = false;
	}
	//显示对话文字
	public void DrawText( Graphics g, int nWidth, int nHeight )
	{
		if( !m_bDialog )
			return;
		g.setColor( 0 );
		g.fillRect(  0, nHeight - 30, nWidth, 30 );
		g.setColor( 0xffffff );
		g.drawRect(  0, nHeight - 30, nWidth - 1, 29 );
		g.drawString( m_strText, 10, nHeight - 25, 
				Graphics.TOP|Graphics.LEFT);
	}
}