Running a task over time?

Running a task over time?

So I have an NPC and I want it to change its appearance over a period of 5
minutes, or 10 minutes if you are a special player. The NPC changes twice
and then completely removes itself. Once a player dies this NPC is placed
in their current position. The NPC then starts to degrade over the period
of 5 minutes and then eventually removes itself. This NPC allows the
player to grab their lost items before the timer runs out. While the NPC
is there, other players have the option of making the timer reset so they
have more time to get there. I was able to make it degrade and send them a
message saying the time they had left to get their items back. The only
problem occurred towards the end, before it destroys itself. It constantly
sends the player a message saying the time they had left rather than just
once, and it never gets removed. Here is the code I have for it:
package com.rs.game.npc.others;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.TimeUnit;
import com.rs.game.item.Item;
import com.rs.game.npc.NPC;
import com.rs.game.player.Player;
import com.rs.game.player.Skills;
import com.rs.utils.Logger;
public class Gravestone extends NPC implements Serializable {
private static final long serialVersionUID = -3293609625562930841L;
private transient Player player;
private long BEGIN_TIME;
private int currentGrave;
private final CopyOnWriteArrayList<Item> container;
private int MAX_TIME = 6*60000;//60000ms = 1 min
private int INTERFACE = 272;
private long timeLeft = (long) (System.currentTimeMillis() - BEGIN_TIME);
private int minutes;
public Gravestone(Player player, CopyOnWriteArrayList<Item>
containedItems) {
super(6601, player, -1, false, false);
this.player = player;
this.BEGIN_TIME = System.currentTimeMillis();
if (player.isDonator())
this.MAX_TIME *= player.getDonator();
this.currentGrave = 6601;
this.container = containedItems;
setName(player.getDisplayName()+ "'s Gravestone");
player.sm("A gravestone has been left in the place you died to
receive your items click on it.");
}
public Gravestone(Player player, CopyOnWriteArrayList<Item>
containedItems, long time, int npcId) {
super(npcId, player, -1, false);
this.player = player;
this.container = containedItems;
setName(player.getDisplayName()+ "'s Gravestone");
}
public String getName() {
return player.getDisplayName()+ "'s Gravestone";
}
public void processNPC() {
if (hasFinished())
return;
setName(getName());
long timeElapsed = System.currentTimeMillis( ) - BEGIN_TIME;
int minute = 60000;
int minutesElapsed = (int) (timeElapsed / minute);
int maxMinutes = MAX_TIME / minute;
minutes = maxMinutes - minutesElapsed;
boolean pause = false;
if (!pause && (minutes == 5 && getId() == 6601 //first - degrade
at 5 minutes stop and wait til unpause
|| minutes == 3 && getId() == 6602 //second - degrade at 3
minutes
|| minutes <= 0 && getId() == 6603)){ //third - degrade at
1 minute
degradeGraveStone();
pause = true;
} else if (pause && (minutes == 4 && getId() == 6602 //second
|| minutes == 2 && getId() == 6603)) //third
pause = false;
Logger.log("GraveStone", "Player "+ player.getDisplayName() +"
time elapsed "+ timeElapsed +" minutes left "+ minutes +" Pause?
"+pause);
}
public void handleOptions(Player p, int id, int npcId) {
switch (id) {
case 1:
sendMemorial(p);
break;
case 2:
if (npcId == 6601)
demolishGraveStone(p);
else
repairGraveStone(p);
break;
case 3:
blessGraveStone(p);
break;
case 4:
demolishGraveStone(p);
break;
}
}
private void degradeGraveStone() {
if (currentGrave < 6603) {
graveStoneDegrade(currentGrave + 1);
} else {
demolishGraveStone(player);
return;
}
setName(player.getDisplayName()+ "'s Gravestone");
player.sm("Your gravestone slighlty degrades, you have" + minutes
+ " minutes to get your items back!");
}
private void demolishGraveStone(Player p) {
if (player != p) {
p.sm("You cannot destroy a grave that isn't yours!");
return;
}
player.sm("Your gravestone has been destroyed.");
player.sm("Your items have been added to your bank.");
for (Item item : container)
player.getBank().addItem(item.getId(), item.getAmount(), true);
finish();
}
private void blessGraveStone(Player p) {
if (p.getSkills().getLevel(Skills.PRAYER) < 90){
p.sm("You need a prayer level of at least 90 to bless this
Grave Stone.");
return;
}
p.sm("You bless " + player.getDisplayName() + "'s Grave Stone.");
player.sm(p.getDisplayName() + " has blessed your GraveStone.");
graveStoneDegrade(6601);
setName(player.getDisplayName()+ "'s Gravestone");
BEGIN_TIME = System.currentTimeMillis();
}
private void repairGraveStone(Player p) {
if (p.getSkills().getLevel(Skills.CRAFTING) < 75){
p.sm("You need a crafting level of at least 75 to repair this
Grave Stone.");
return;
}
p.sm("You repair " + player.getDisplayName() + "'s Grave Stone.");
player.sm(p.getDisplayName() + " has repaired your GraveStone.");
graveStoneDegrade(this.getId() - 1);
setName(player.getDisplayName()+ "'s Gravestone");
BEGIN_TIME = System.currentTimeMillis();
}
private void sendMemorial(Player p) {
p.getInterfaceManager().sendInterface(INTERFACE);
p.getPackets().sendIComponentText(INTERFACE, 16, getName());
}
public Player getPlayer() {
return player;
}
}