Give correct amount of energy for collecting particles/orbs, and consume energy on burst cast.

src/main/java/emu/grasscutter/game/avatar/Avatar.java

@@ -493,6 +493,9 @@ public class Avatar {
 		// Get hp percent, set to 100% if none
 		float hpPercent = this.getFightProperty(FightProperty.FIGHT_PROP_MAX_HP) <= 0 ? 1f : this.getFightProperty(FightProperty.FIGHT_PROP_CUR_HP) / this.getFightProperty(FightProperty.FIGHT_PROP_MAX_HP);
 		
+		// Store current energy value for later
+		float currentEnergy = (data.getSkillDepot() != null) ? this.getFightProperty(data.getSkillDepot().getElementType().getCurEnergyProp()) : 0f;
+
 		// Clear properties
 		this.getFightProperties().clear();
 		
@@ -514,7 +517,8 @@ public class Avatar {
 		if (data.getSkillDepot() != null && data.getSkillDepot().getEnergySkillData() != null) {
 			ElementType element = data.getSkillDepot().getElementType();
 			this.setFightProperty(element.getMaxEnergyProp(), data.getSkillDepot().getEnergySkillData().getCostElemVal());
-			this.setFightProperty((element.getMaxEnergyProp().getId() % 70) + 1000, data.getSkillDepot().getEnergySkillData().getCostElemVal());
+			this.setFightProperty(element.getCurEnergyProp(), currentEnergy);
+			//this.setFightProperty((element.getMaxEnergyProp().getId() % 70) + 1000, data.getSkillDepot().getEnergySkillData().getCostElemVal());
 		}
 		
 		// Artifacts

src/main/java/emu/grasscutter/game/entity/EntityAvatar.java

 package emu.grasscutter.game.entity;
 
+import emu.grasscutter.Grasscutter;
 import emu.grasscutter.GameConstants;
 import emu.grasscutter.data.GameData;
 import emu.grasscutter.data.def.AvatarData;
@@ -129,13 +130,27 @@ public class EntityAvatar extends GameEntity {
 	}
 	
 	public void addEnergy(float amount) {
+		this.addEnergy(amount, false);
+	}
+	public void addEnergy(float amount, boolean isFlat) {
+		// Get current and maximum energy for this avatar.
 		FightProperty curEnergyProp = getAvatar().getSkillDepot().getElementType().getCurEnergyProp();
 		FightProperty maxEnergyProp = getAvatar().getSkillDepot().getElementType().getMaxEnergyProp();
 		
+		// Get energy recharge.
+		float energyRecharge = this.getFightProperty(FightProperty.FIGHT_PROP_CHARGE_EFFICIENCY);
+
+		// Scale amount by energy recharge, if the amount is not flat.
+		if (!isFlat) {
+			amount *= energyRecharge;
+		}
+
+		// Determine the new energy value.
 		float curEnergy = this.getFightProperty(curEnergyProp);
 		float maxEnergy = this.getFightProperty(maxEnergyProp);
 		float newEnergy = Math.min(curEnergy + amount, maxEnergy);
 		
+		// Set energy and notify.
 		if (newEnergy != curEnergy) {
 			setFightProperty(curEnergyProp, newEnergy);
 			

src/main/java/emu/grasscutter/game/player/TeamManager.java

@@ -4,6 +4,7 @@ import java.util.*;
 
 import dev.morphia.annotations.Entity;
 import dev.morphia.annotations.Transient;
+import emu.grasscutter.Grasscutter;
 import emu.grasscutter.GameConstants;
 import emu.grasscutter.data.def.AvatarSkillDepotData;
 import emu.grasscutter.game.avatar.Avatar;
@@ -19,6 +20,7 @@ import emu.grasscutter.net.packet.PacketOpcodes;
 import emu.grasscutter.net.proto.EnterTypeOuterClass.EnterType;
 import emu.grasscutter.net.proto.MotionStateOuterClass.MotionState;
 import emu.grasscutter.net.proto.PlayerDieTypeOuterClass.PlayerDieType;
+import emu.grasscutter.server.game.GameSession;
 import emu.grasscutter.server.packet.send.PacketAvatarDieAnimationEndRsp;
 import emu.grasscutter.server.packet.send.PacketAvatarFightPropUpdateNotify;
 import emu.grasscutter.server.packet.send.PacketAvatarLifeStateChangeNotify;
@@ -583,20 +585,55 @@ public class TeamManager {
 	}
 	
 	public synchronized void addEnergyToTeam(GameItem energyBall) {
-		// TODO
-		float baseEnergy = 2;
+		// Check if the item is indeed an energy particle/orb.
+		if (energyBall.getItemId() < 2001 ||energyBall.getItemId() > 2024) {
+			return;
+		}
 
-		for (int i = 0; i < getActiveTeam().size(); i++) {
-			EntityAvatar entity = getActiveTeam().get(i);
+		// Determine the base amount of energy given by the particle/orb.
+		// Particles have a base amount of 1.0, and orbs a base amount of 3.0.
+		float baseEnergy = (energyBall.getItemId() <= 2008) ? 3.0f : 1.0f;
 
-			float energyGain = baseEnergy;
+		// Add energy to every team member.		
+		for (int i = 0; i < this.getActiveTeam().size(); i++) {
+			EntityAvatar entity = this.getActiveTeam().get(i);
 
-			// Active character gets full hp
-			if (getCurrentCharacterIndex() != i) {
-				energyGain *= Math.max(1.0 - (getActiveTeam().size() * .1f), .6f);
+			// On-field vs off-field multiplier.
+			float offFieldPenalty = (this.getCurrentCharacterIndex() == i) ? 1.0f : 1.0f - this.getActiveTeam().size() * 0.1f;
+
+			// Same element/neutral bonus.
+			ElementType avatarElement = entity.getAvatar().getSkillDepot().getElementType();
+			ElementType ballElement = switch (energyBall.getItemId()) {
+				case 2001, 2017 -> ElementType.Fire;
+				case 2002, 2018 -> ElementType.Water;
+				case 2003, 2019 -> ElementType.Grass;
+				case 2004, 2020 -> ElementType.Electric;
+				case 2005, 2021 -> ElementType.Wind;
+				case 2006, 2022 -> ElementType.Ice;
+				case 2007, 2023 -> ElementType.Rock;
+				default -> null;
+			};
+			float elementBonus = (ballElement == null) ? 2.0f : (avatarElement == ballElement) ? 3.0f : 1.0f;
+			
+			// Add the energy.
+			entity.addEnergy(baseEnergy * elementBonus * offFieldPenalty);
+		}
+	}
+
+	public void handleEvtDoSkillSuccNotify(GameSession session, int skillId, int casterId) {
+		// Determine the entity that has cast the skill.
+		Optional<EntityAvatar> caster = this.getActiveTeam().stream()
+											.filter(character -> character.getId() == casterId)
+											.findFirst();
+		if (caster.isEmpty()) {
+			return;
 		}
+		Avatar avatar = caster.get().getAvatar();
 
-			entity.addEnergy(energyGain);
+		// If the cast skill was a burst, consume energy.
+		if (skillId == avatar.getSkillDepot().getEnergySkill()) {
+			float consumedEnergy = avatar.getFightProperty(avatar.getSkillDepot().getElementType().getMaxEnergyProp());
+			avatar.getAsEntity().addEnergy(-consumedEnergy);
 		}
 	}
 

src/main/java/emu/grasscutter/server/packet/recv/HandlerEvtDoSkillSuccNotify.java

@@ -19,5 +19,6 @@ public class HandlerEvtDoSkillSuccNotify extends PacketHandler {
         Vector forwardVector = notify.getForward();
         Position forward = new Position(forwardVector.getX(), forwardVector.getY(), forwardVector.getZ());
         session.getPlayer().getStaminaManager().handleEvtDoSkillSuccNotify(session, skillId, casterId);
+        session.getPlayer().getTeamManager().handleEvtDoSkillSuccNotify(session, skillId, casterId);
     }
 }