feat: 添加事件支持

currency-plugin/src/main/java/cn/hamster3/currency/event/CurrencyChangeEvent.java

@@ -0,0 +1,53 @@
+package cn.hamster3.currency.event;
+
+import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.UUID;
+
+@SuppressWarnings("unused")
+public class CurrencyChangeEvent extends Event {
+    private static final HandlerList handlerList = new HandlerList();
+    @NotNull
+    private final UUID playerUUID;
+    @NotNull
+    private final String currencyID;
+    private final double oldAmount;
+    private final double newAmount;
+
+    public CurrencyChangeEvent(@NotNull UUID playerUUID, @NotNull String currencyID, double oldAmount, double newAmount) {
+        super(true);
+        this.playerUUID = playerUUID;
+        this.currencyID = currencyID;
+        this.oldAmount = oldAmount;
+        this.newAmount = newAmount;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlerList;
+    }
+
+    @NotNull
+    public UUID getPlayerUUID() {
+        return playerUUID;
+    }
+
+    @NotNull
+    public String getCurrencyID() {
+        return currencyID;
+    }
+
+    public double getOldAmount() {
+        return oldAmount;
+    }
+
+    public double getNewAmount() {
+        return newAmount;
+    }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlerList;
+    }
+}