Implement sending friends energy

README.md

@@ -16,7 +16,7 @@ Latest nightly compiled server jar: [Nightly](https://nightly.link/Melledy/Nebul
 - Daily quests
 - Battle pass
 - Gacha
-- Friend system (sending energy not implemented)
+- Friend system
 - Shop (only in-game currency supported)
 - Commissions
 - Heartlink

src/main/java/emu/nebula/game/friends/FriendList.java

@@ -1,6 +1,7 @@
 package emu.nebula.game.friends;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
 
 import emu.nebula.GameConstants;
@@ -11,9 +12,12 @@ import emu.nebula.game.player.PlayerManager;
 import emu.nebula.net.NetMsgId;
 import emu.nebula.proto.FriendListGet.FriendListGetResp;
 import emu.nebula.proto.Public.FriendDetail;
+import emu.nebula.proto.Public.FriendEnergyState;
 import emu.nebula.proto.Public.FriendState;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+import it.unimi.dsi.fastutil.longs.LongArrayList;
+import it.unimi.dsi.fastutil.longs.LongList;
 import lombok.Getter;
 import us.hebi.quickbuf.RepeatedLong;
 
@@ -90,6 +94,12 @@ public class FriendList extends PlayerManager {
         return this.getPendingFriends().size() + this.getFriends().size();
     }
     
+    public synchronized boolean hasEnergy() {
+        return this.getFriends().values()
+                .stream()
+                .anyMatch(f -> f.getEnergy() > 0);
+    }
+    
     public synchronized Player handleFriendRequest(int targetUid, boolean action) {
         // Make sure we have enough room
         if (this.getFriends().size() >= GameConstants.MAX_FRIENDSHIPS) {
@@ -263,6 +273,127 @@ public class FriendList extends PlayerManager {
         this.cacheCooldown = 0;
     }
     
+    // Energy
+    
+    public synchronized LongList sendEnergy(RepeatedLong uids) {
+        // Get friendships
+        Collection<Friendship> list = null;
+        
+        if (uids.length() == 0) {
+            list = this.getFriends().values();
+        } else {
+            list = new ArrayList<>();
+            
+            for (long uid : uids) {
+                var friend = this.getFriendById((int) uid);
+                
+                if (friend == null) {
+                    continue;
+                }
+                
+                list.add(friend);
+            }
+        }
+        
+        // Send energy
+        var results = new LongArrayList();
+        
+        for (var friend : list) {
+            // Sanity
+            if (!friend.canSendEnergy()) {
+                continue;
+            }
+            
+            // Update last send timestamp
+            friend.updateLastSendEnergy();
+            friend.save();
+            
+            // Add to results
+            results.add(friend.getFriendUid());
+            
+            // Send energy to friend
+            Player target = getGameContext().getPlayerModule().getCachedPlayerByUid(friend.getFriendUid());
+            
+            if (target != null) {
+                // Get friend's friendship
+                var theirFriendship = target.getFriendList().getFriendById(this.getPlayer().getUid());
+                
+                // Send energy
+                theirFriendship.sendEnergy();
+                theirFriendship.save();
+                
+                if (target.isLoaded()) {
+                    // Send message to notify friend that we sent them energy
+                    target.addNextPackage(
+                        NetMsgId.friend_energy_state_notify, 
+                        FriendEnergyState.newInstance()
+                            .setState(true)
+                    );
+                }
+            }
+        }
+        
+        // Clear friend list cache
+        if (results.size() > 0) {
+            this.cacheCooldown = 0;
+        }
+        
+        // Complete
+        return results;
+    }
+    
+    public synchronized FriendRecvEnergyResult recvEnergy(RepeatedLong uids) {
+        // Get friendships
+        Collection<Friendship> list = null;
+        
+        if (uids.length() == 0) {
+            list = this.getFriends().values();
+        } else {
+            list = new ArrayList<>();
+            
+            for (long uid : uids) {
+                var friend = this.getFriendById((int) uid);
+                
+                if (friend == null) {
+                    continue;
+                }
+                
+                list.add(friend);
+            }
+        }
+        
+        // Send energy
+        var result = new FriendRecvEnergyResult();
+        
+        for (var friend : list) {
+            // Skip if we dont have energy
+            if (friend.getEnergy() <= 0) {
+                continue;
+            }
+            
+            // Add uid
+            result.getUids().add(friend.getFriendUid());
+            
+            // Claim energy
+            result.addEnergy(friend.recvEnergy());
+            
+            // Save to database
+            friend.save();
+        }
+        
+        // Add energy
+        if (result.getEnergy() > 0) {
+            // Add energy to player
+            this.getPlayer().addEnergy(result.getEnergy(), result.getChange());
+            
+            // Clear friend list cache
+            this.cacheCooldown = 0;
+        }
+        
+        // Complete
+        return result;
+    }
+    
     // Database
     
     public synchronized void loadFromDatabase() {
@@ -305,6 +436,7 @@ public class FriendList extends PlayerManager {
             var info = FriendDetail.newInstance()
                     .setBase(base)
                     .setStar(friend.isStar())
+                    .setSendEnergy(!friend.canSendEnergy())
                     .setGetEnergy(friend.getEnergy());
             
             // Add

src/main/java/emu/nebula/game/friends/FriendRecvEnergyResult.java

@@ -0,0 +1,22 @@
+package emu.nebula.game.friends;
+
+import emu.nebula.game.player.PlayerChangeInfo;
+import it.unimi.dsi.fastutil.longs.LongArrayList;
+import it.unimi.dsi.fastutil.longs.LongList;
+import lombok.Getter;
+
+@Getter
+public class FriendRecvEnergyResult {
+    private PlayerChangeInfo change;
+    private LongList uids;
+    private int energy;
+    
+    public FriendRecvEnergyResult() {
+        this.change = new PlayerChangeInfo();
+        this.uids = new LongArrayList();
+    }
+
+    public void addEnergy(int amount) {
+        this.energy += amount;
+    }
+}

src/main/java/emu/nebula/game/friends/Friendship.java

@@ -21,7 +21,9 @@ public class Friendship implements GameDatabaseObject {
     
     @Setter private boolean isFriend;
     @Setter private boolean star;
-    @Setter private int energy;
+    
+    private int energy;
+    private long lastSend;
     
     @Setter private transient Player player;
     
@@ -36,6 +38,24 @@ public class Friendship implements GameDatabaseObject {
         this.key = Friendship.generateUniqueKey(player.getUid(), friend.getUid());
     }
 
+    public boolean canSendEnergy() {
+        return this.lastSend != this.getPlayer().getLastEpochDay();
+    }
+    
+    public void updateLastSendEnergy() {
+        this.lastSend = this.getPlayer().getLastEpochDay();
+    }
+    
+    public void sendEnergy() {
+        this.energy = 1;
+    }
+    
+    public int recvEnergy() {
+        int amount = this.energy;
+        this.energy = 0;
+        return amount;
+    }
+    
     // Database functions
 
     public void delete() {

src/main/java/emu/nebula/game/player/Player.java

@@ -907,7 +907,8 @@ public class Player implements GameDatabaseObject {
         state.getMutableAchievement()
             .setNew(this.getAchievementManager().hasNewAchievements());
         
-        state.getMutableFriendEnergy();
+        state.getMutableFriendEnergy()
+            .setState(this.getFriendList().hasEnergy());
         state.getMutableMallPackage();
         state.getMutableTravelerDuelQuest()
             .setType(QuestType.TravelerDuel);

src/main/java/emu/nebula/server/handlers/HandlerFriendReceiveEnergyReq.java

@@ -0,0 +1,34 @@
+package emu.nebula.server.handlers;
+
+import emu.nebula.net.NetHandler;
+import emu.nebula.net.NetMsgId;
+import emu.nebula.proto.FriendReceiveEnergy.FriendReceiveEnergyReq;
+import emu.nebula.proto.FriendReceiveEnergy.FriendReceiveEnergyResp;
+import emu.nebula.net.HandlerId;
+import emu.nebula.net.GameSession;
+
+@HandlerId(NetMsgId.friend_receive_energy_req)
+public class HandlerFriendReceiveEnergyReq extends NetHandler {
+
+    @Override
+    public byte[] handle(GameSession session, byte[] message) throws Exception {
+        // Parse request
+        var req = FriendReceiveEnergyReq.parseFrom(message);
+        
+        // Send energy
+        var result = session.getPlayer().getFriendList().recvEnergy(req.getUIds());
+        
+        // Build response
+        var rsp = FriendReceiveEnergyResp.newInstance()
+                .setChange(result.getChange().toProto())
+                .setReceiveEnergyCnt(result.getEnergy());
+        
+        for (long uid : result.getUids()) {
+            rsp.addUIds(uid);
+        }
+        
+        // Encode and send
+        return session.encodeMsg(NetMsgId.friend_receive_energy_succeed_ack, rsp);
+    }
+
+}

src/main/java/emu/nebula/server/handlers/HandlerFriendSendEnergyReq.java

@@ -0,0 +1,32 @@
+package emu.nebula.server.handlers;
+
+import emu.nebula.net.NetHandler;
+import emu.nebula.net.NetMsgId;
+import emu.nebula.proto.FriendSendEnergy.FriendSendEnergyReq;
+import emu.nebula.proto.FriendSendEnergy.FriendSendEnergyResp;
+import emu.nebula.net.HandlerId;
+import emu.nebula.net.GameSession;
+
+@HandlerId(NetMsgId.friend_send_energy_req)
+public class HandlerFriendSendEnergyReq extends NetHandler {
+
+    @Override
+    public byte[] handle(GameSession session, byte[] message) throws Exception {
+        // Parse request
+        var req = FriendSendEnergyReq.parseFrom(message);
+        
+        // Send energy
+        var results = session.getPlayer().getFriendList().sendEnergy(req.getUIds());
+        
+        // Build response
+        var rsp = FriendSendEnergyResp.newInstance();
+        
+        for (long uid : results) {
+            rsp.addUIds(uid);
+        }
+        
+        // Encode and send
+        return session.encodeMsg(NetMsgId.friend_send_energy_succeed_ack, rsp);
+    }
+
+}