score.java

Source-DeathFlight手机游戏,死亡飞行,适合初学者学习.

import java.io.*;


public class Score extends BaseRMS {
	
	private String[] names = new String[3];
	
	private int[] values = new int[3];
	
	public Score(String rmsName){
		super(rmsName);
		initValues();
	}
	
	private void initValues(){
		names[0] = "Magic.D";
		names[1] = "Tangel";
		names[2] = "Nick";
		values[0] = 100;
		values[1] = 50;
		values[2] = 10;
	}
	
	public void loadScores() throws Exception {
		try{
			this.open();
			if(this.getRecordStore()!=null)
				this.close();
		}catch(Exception e){
			throw new Exception("Error loading Scores" + e);
		}
	}
	
	public int[] getValues(){
		return this.values;
	}
	
	public String[] getNames(){
		return this.names;
	}
	
	public void reset() throws Exception {
		this.open();
		initValues();
		updateData();
		if(this.getRecordStore()!=null)
			this.close();
	}
	
	public void updateScores(int score,String Name) throws Exception {
		try {
			for(int i=0;i<names.length;i++){
				if(score>=values[i]){
					this.open();
					for(int j=names.length-1;j>i;j--){
						values[j] = values[j-1];
						names[j] = names[j-1];
					}
					this.values[i] = score;
					this.names[i] = Name;
					updateData();
					if(this.getRecordStore()!=null)
						this.close();
					break;
				}
			}
		}catch(Exception e){
			throw new Exception(this.getRMSName() + "::updateScores::" + e);
		}
	}
	
	public boolean isHighScore(int score) throws Exception {
		boolean isHighScore = false;
		try {
			for(int i=0;i<names.length;i++){
				if(score>=values[i])
					isHighScore = true;
			}
		}catch(Exception e){
			throw new Exception(this.getRMSName() + "::isHighScore::" + e);
		}
		return isHighScore;
	}
	
	protected void loadData() throws Exception {
		try {
			for(int i=0;i<names.length;i++){
				byte[] record = this.getRecordStore().getRecord(i+1);
				DataInputStream istream = new DataInputStream(new ByteArrayInputStream(record,0,record.length));
				values[i] = istream.readInt();
				names[i] = istream.readUTF();
			}
		}catch(Exception e){
			throw new Exception(this.getRMSName() + "::loadData::" + e);
		}
	}
	
	protected void createDefaultData() throws Exception {
		try{
			for(int i=0;i<names.length;i++){
				ByteArrayOutputStream bstream = new ByteArrayOutputStream(12);
				DataOutputStream ostream = new DataOutputStream(bstream);
				ostream.writeInt(values[i]);
				ostream.writeUTF(names[i]);
				ostream.flush();
				ostream.close();
				byte[] record = bstream.toByteArray();
				this.getRecordStore().addRecord(record,0,record.length);
			}
		}catch(Exception e){
			throw new Exception(this.getRMSName() + "::createDefaultData::" + e);
		}
	}
	
	protected void updateData() throws Exception {
		try{
			for(int i=0;i<names.length;i++){
				ByteArrayOutputStream bstream = new ByteArrayOutputStream(12);
				DataOutputStream ostream = new DataOutputStream(bstream);
				ostream.writeInt(values[i]);
				ostream.writeUTF(names[i]);
				ostream.flush();
				ostream.close();
				byte[] record = bstream.toByteArray();
				this.getRecordStore().setRecord(i+1,record,0,record.length);
			}
		}catch(Exception e){
			throw new Exception(this.getRMSName() + "::updateData::" + e);
		}
	}
	
}