这是关于基岩版gui的相关代码提交

src/main/java/org/Little_100/projecte/bedrock/BedrockFormUtil.java

@@ -0,0 +1,138 @@
+package org.Little_100.projecte.bedrock;
+
+import org.Little_100.projecte.ProjectE;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.geysermc.cumulus.form.Form;
+import org.geysermc.floodgate.api.FloodgateApi;
+
+import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.logging.Level;
+
+/**
+ * 基岩版 Form UI 的通用工具类。
+ *
+ * 架构说明:
+ *   Velocity 代理 + Floodgate 后端模式下, 我们的插件跑在后端,
+ *   后端没有 Geyser API, 但有 Floodgate API。
+ *   所以用 FloodgateApi 来判断玩家是否是基岩版玩家。
+ *   发送 Form 用 Cumulus (Cumulus 在 Geyser/Floodgate 任何一方都能工作)。
+ *
+ * 职责:
+ *   - 检测玩家是否是 Floodgate 识别的基岩版玩家
+ *   - 安全地发送 Cumulus 表单
+ *   - 维护玩家的 Form Session Token, 防止 Form 重放/双击攻击
+ */
+public final class BedrockFormUtil {
+
+    private BedrockFormUtil() {}
+
+    // ==================== Floodgate / Cumulus 检测 ====================
+
+    private static Boolean floodgateApiAvailable = null;
+
+    public static boolean isFloodgateApiAvailable() {
+        if (floodgateApiAvailable == null) {
+            try {
+                Class.forName("org.geysermc.floodgate.api.FloodgateApi");
+                floodgateApiAvailable = true;
+            } catch (ClassNotFoundException e) {
+                floodgateApiAvailable = false;
+            }
+        }
+        return floodgateApiAvailable;
+    }
+
+    /**
+     * 判断玩家是否是基岩版玩家 (通过 Floodgate 识别)。
+     * 任何线程都可调用, 不抛异常。Floodgate 未加载时返回 false。
+     */
+    public static boolean isBedrockPlayer(Player player) {
+        if (player == null) return false;
+        return isBedrockPlayer(player.getUniqueId());
+    }
+
+    public static boolean isBedrockPlayer(UUID uuid) {
+        if (uuid == null) return false;
+        if (!isFloodgateApiAvailable()) return false;
+        try {
+            FloodgateApi api = FloodgateApi.getInstance();
+            if (api == null) return false;
+            return api.isFloodgatePlayer(uuid);
+        } catch (Throwable t) {
+            return false;
+        }
+    }
+
+    // 保留旧方法名以防别的代码调用 (兼容)
+    public static boolean isGeyserApiAvailable() {
+        return isFloodgateApiAvailable();
+    }
+
+    // ==================== 表单发送 ====================
+
+    /**
+     * 发送 Cumulus 表单给基岩版玩家。主线程调用。
+     *
+     * Floodgate 直接支持 Cumulus Form 发送, 通过 FloodgatePlayer.sendForm。
+     *
+     * @return true 发送成功; false 玩家非基岩版 / Floodgate 未加载 / 发送异常
+     */
+    public static boolean sendForm(Player player, Form form) {
+        if (!isBedrockPlayer(player)) return false;
+        if (form == null) return false;
+        try {
+            FloodgateApi api = FloodgateApi.getInstance();
+            if (api == null) return false;
+            org.geysermc.floodgate.api.player.FloodgatePlayer fp =
+                    api.getPlayer(player.getUniqueId());
+            if (fp == null) return false;
+            fp.sendForm(form);
+            return true;
+        } catch (Throwable t) {
+            ProjectE.getInstance().getLogger().log(
+                    Level.WARNING,
+                    "Failed to send Bedrock form to " + player.getName(),
+                    t
+            );
+            return false;
+        }
+    }
+
+    // ==================== 防重放 Session Token ====================
+
+    private static final ConcurrentHashMap<UUID, UUID> currentSession = new ConcurrentHashMap<>();
+
+    public static UUID newSession(Player player) {
+        UUID token = UUID.randomUUID();
+        currentSession.put(player.getUniqueId(), token);
+        return token;
+    }
+
+    public static boolean isSessionValid(Player player, UUID token) {
+        if (player == null || token == null) return false;
+        UUID current = currentSession.get(player.getUniqueId());
+        return token.equals(current);
+    }
+
+    public static void clearSession(UUID playerUuid) {
+        if (playerUuid != null) {
+            currentSession.remove(playerUuid);
+        }
+    }
+
+    // ==================== 显示辅助 ====================
+
+    public static String formatEmc(long emc) {
+        return String.format("%,d", emc);
+    }
+
+    public static String getDisplayName(ItemStack item) {
+        if (item == null) return "";
+        if (item.hasItemMeta() && item.getItemMeta().hasDisplayName()) {
+            return item.getItemMeta().getDisplayName();
+        }
+        return item.getType().name().toLowerCase().replace('_', ' ');
+    }
+}

src/main/java/org/Little_100/projecte/bedrock/transmutation/TransmutationMainForm.java

@@ -0,0 +1,45 @@
+package org.Little_100.projecte.bedrock.transmutation;
+
+import org.Little_100.projecte.ProjectE;
+import org.Little_100.projecte.bedrock.BedrockFormUtil;
+import org.Little_100.projecte.bedrock.transmutation.buy.BuyListForm;
+import org.Little_100.projecte.bedrock.transmutation.sell.SellEntryForm;
+import org.bukkit.entity.Player;
+import org.geysermc.cumulus.form.SimpleForm;
+
+import java.util.UUID;
+
+/**
+ * 基岩版转换桌主菜单。入口: /projecte opentable 或 /opentable
+ */
+public final class TransmutationMainForm {
+
+    private TransmutationMainForm() {}
+
+    public static void open(Player player) {
+        if (player == null || !player.isOnline()) return;
+
+        UUID token = BedrockFormUtil.newSession(player);
+
+        long emc = ProjectE.getInstance().getDatabaseManager().getPlayerEmc(player.getUniqueId());
+
+        SimpleForm form = SimpleForm.builder()
+                .title("§5§l转换桌")
+                .content("§f你的 EMC: §e" + BedrockFormUtil.formatEmc(emc) + "\n\n§7请选择操作:")
+                .button("§a§l出售物品\n§7将物品转换为 EMC")
+                .button("§b§l购买物品\n§7使用 EMC 获取已学习的物品")
+                .button("§c关闭")
+                .validResultHandler(response -> {
+                    // 主菜单不需要 session 检查(顶层入口), 但子菜单需要
+                    if (!player.isOnline()) return;
+                    switch (response.clickedButtonId()) {
+                        case 0 -> SellEntryForm.open(player);
+                        case 1 -> BuyListForm.open(player, 0, "");
+                        case 2 -> { /* 关闭 */ }
+                    }
+                })
+                .build();
+
+        BedrockFormUtil.sendForm(player, form);
+    }
+}

src/main/java/org/Little_100/projecte/bedrock/transmutation/buy/BuyAmountForm.java

@@ -0,0 +1,86 @@
+package org.Little_100.projecte.bedrock.transmutation.buy;
+
+import org.Little_100.projecte.ProjectE;
+import org.Little_100.projecte.bedrock.BedrockFormUtil;
+import org.Little_100.projecte.managers.EmcManager;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.geysermc.cumulus.form.CustomForm;
+
+/**
+ * 自定义购买数量。
+ *
+ * 防刷:
+ * - slider 上限受 MAX_BUY_AMOUNT (EmcManager.MAX_BUY_AMOUNT=576) 和 maxAffordable 双重约束
+ * - 回调接收数量后再 clamp 一次, 防止客户端恶意伪造超限值
+ * - EMC 扣除最终仍在 EmcManager.buyItem 执行, 那里还有一次完整校验
+ */
+public final class BuyAmountForm {
+
+    private static final int IDX_SLIDER = 1;
+
+    private BuyAmountForm() {}
+
+    public static void open(Player player, String itemKey, int returnPage, String returnFilter) {
+        if (player == null || !player.isOnline()) return;
+        ProjectE plugin = ProjectE.getInstance();
+
+        ItemStack sample = plugin.getItemStackFromKey(itemKey);
+        if (sample == null) {
+            player.sendMessage("§c物品不可用");
+            BuyListForm.open(player, returnPage, returnFilter);
+            return;
+        }
+
+        long unitEmc = plugin.getEmcManager().getEmc(itemKey);
+        long playerEmc = plugin.getDatabaseManager().getPlayerEmc(player.getUniqueId());
+
+        if (unitEmc <= 0) {
+            player.sendMessage("§c该物品无 EMC 值");
+            BuyListForm.open(player, returnPage, returnFilter);
+            return;
+        }
+
+        // 计算上限: min(MAX_BUY_AMOUNT, playerEmc/unitEmc, maxStack*9)
+        int maxAffordable = (int) Math.min(playerEmc / unitEmc, EmcManager.MAX_BUY_AMOUNT);
+        maxAffordable = Math.min(maxAffordable, sample.getMaxStackSize() * 9);
+
+        if (maxAffordable < 1) {
+            player.sendMessage("§cEMC 不足, 连 1 个都买不起。");
+            BuyChoiceForm.open(player, itemKey, returnPage, returnFilter);
+            return;
+        }
+
+        String itemName = BedrockFormUtil.getDisplayName(sample);
+        String labelText = "§f物品: §e" + itemName + "\n"
+                + "§f单价: §e" + BedrockFormUtil.formatEmc(unitEmc) + " EMC\n"
+                + "§f你的 EMC: §e" + BedrockFormUtil.formatEmc(playerEmc) + "\n"
+                + "§f最多可买: §e" + maxAffordable + " §f个\n\n"
+                + "§7拖动滑块选择数量:";
+
+        final int max = maxAffordable;
+        CustomForm form = CustomForm.builder()
+                .title("§b§l购买 " + itemName)
+                .label(labelText)
+                .slider("数量", 1, max, 1, 1)
+                .validResultHandler(response -> {
+                    if (!player.isOnline()) return;
+
+                    int amount = (int) response.asSlider(IDX_SLIDER);
+                    // [防御]: clamp, 防客户端发送超限值
+                    if (amount < 1) amount = 1;
+                    if (amount > max) amount = max;
+                    if (amount > EmcManager.MAX_BUY_AMOUNT) amount = EmcManager.MAX_BUY_AMOUNT;
+
+                    BuyConfirmForm.openConfirm(player, itemKey, amount, returnPage, returnFilter);
+                })
+                .closedOrInvalidResultHandler(() -> {
+                    if (player.isOnline()) {
+                        BuyChoiceForm.open(player, itemKey, returnPage, returnFilter);
+                    }
+                })
+                .build();
+
+        BedrockFormUtil.sendForm(player, form);
+    }
+}