add support for telling clients about new locations that have been checked by other players, (via co-op or !collect)

Author: KonoTyran

src/main/java/gg/archipelago/APClient/APClient.java

@@ -220,6 +220,8 @@ public void scoutLocations(ArrayList<Integer> locationIDs) {
 
     public abstract void onLocationInfo(ArrayList<NetworkItem> item);
 
+    public abstract void onLocationChecked(int locationID);
+
     public DataPackage getDataPackage() {
         return dataPackage;
     }

src/main/java/gg/archipelago/APClient/APWebSocket.java

@@ -187,6 +187,12 @@ private void updateRoom(RoomUpdatePacket updateRoomPacket) {
 
         apClient.setHintPoints(updateRoomPacket.hintPoints);
         apClient.setAlias(apClient.getRoomInfo().getPlayer(apClient.getTeam(), apClient.getSlot()).alias);
+
+        for (int location : updateRoomPacket.checkedLocations) {
+            if(apClient.getLocationManager().getCheckedLocations().contains(location))
+                continue;
+            apClient.onLocationChecked(location);
+        }
     }
 
     private void checkDataPackage(HashMap<String,Integer> versions) {

src/main/java/gg/archipelago/APClient/network/RoomUpdatePacket.java

@@ -33,6 +33,12 @@ public class RoomUpdatePacket extends APPacket {
     @SerializedName("location_check_points")
     public int locationCheckPoints;
 
+    @SerializedName("checked_locations")
+    public ArrayList<Integer> checkedLocations = new ArrayList<>();
+
+    @SerializedName("missing_locations")
+    public ArrayList<Integer> missingLocations = new ArrayList<>();
+
     @SerializedName("players")
     public ArrayList<NetworkPlayer> networkPlayers = new ArrayList<>();