Thread: [508] Fix Missing Map Data Crashing

This small tutorial helps stopping client crashes due to missing map data.

Credits:
-Palidino76 for the original methods.
-Me for fixing the crashes.

Step 1. Open up Player.java

Add this import:

Code:

import java.util.LinkedList;

Add these 2 methods:

Code:

	public void noMapdata() {
        //Missing Map Data fix by Gravediggah
		setCoords(3222,3222,0); // Lumbridge
		Engine.playerMovement.getNextPlayerMovement(this);
        this.frames.setMapRegion(this);
        this.frames.sendMessage(this, "Missing map data for your location, your location has been changed to Lumbridge.");
	}
	
	public LinkedList<Integer> getRegion() {
        //Missing Map Data fix by Gravediggah
		 LinkedList<Integer> regions = new LinkedList<Integer>();
		 boolean forceSend = true;
		 if ((((mapRegionX / 8) == 48) || ((mapRegionX / 8) == 49)) && ((mapRegionY / 8) == 48)) {
	            forceSend = false;
	     }
		 
        if (((mapRegionX / 8) == 48) && ((mapRegionY / 8) == 148)) {
            forceSend = false;
        }
        
        for (int xCalc = (mapRegionX - 6) / 8; xCalc <= ((mapRegionX + 6) / 8); xCalc++) {
            for (int yCalc = (mapRegionY - 6) / 8; yCalc <= ((mapRegionY + 6) / 8); yCalc++) {
                if (forceSend || ((yCalc != 49) && (yCalc != 149) && (yCalc != 147) && (xCalc != 50) && ((xCalc != 49) || (yCalc != 47)))) {
                	regions.add(yCalc + (xCalc << 1786653352));
                }
            }
        }
        return regions;
	}

Step 2. Open up MapData.java in palidino76.rs2.world.mapdata

Replace your getData(int myRegion) method with this one:

Code:

    public int[] getData(int myRegion) {

        //Missing Map Data fix by Gravediggah

        for (MapList list : mapLists) {
            if (list == null) {
                continue;
            }
            if (list.region == myRegion) 
            {
                return list.data;
            }
        }

        Misc.println("Missing map data: " + myRegion);
        return new int[5];
    }

Step 3. Open up Frames.java

Add this import:

Code:

import java.util.LinkedList;

Replace your setMapRegion(Player p) method with this one:

Code:

    public void setMapRegion(Player p) {
        if (p == null || p.stream == null || p.disconnected[0]) {
            return;
        }
        
        LinkedList<Integer> regions = p.getRegion();
        
        //Missing Map Data fix by Gravediggah
       
        if(regions.size()==0) {
        	p.noMapdata();
        	return;
        }
        
        for(int region : regions) {
	        int[] mapData = Engine.mapData.getData(region);
	        
	        if(mapData.length==5) { // MISSING
	        	p.noMapdata();
	        	return;
	        }
        }
        
        p.stream.createFrameVarSizeWord(142);
        p.stream.writeWordA(p.mapRegionX);
        p.stream.writeWordBigEndianA(p.currentY);
        p.stream.writeWordA(p.currentX);
        p.rebuildNPCList = true;
        
        for(int region : regions) {
	        int[] mapData = Engine.mapData.getData(region);
	        p.stream.writeDWord(mapData[0]);
	        p.stream.writeDWord(mapData[1]);
	        p.stream.writeDWord(mapData[2]);
	        p.stream.writeDWord(mapData[3]);
        }
                
        p.stream.writeByteC(p.heightLevel);
        p.stream.writeWord(p.mapRegionY);
        p.stream.endFrameVarSizeWord();
    }