添加多人游戏界面Mod收费警告

src/main/java/com/atsuishio/superbwarfare/client/screens/ModSellWarningScreen.java

@@ -0,0 +1,118 @@
+package com.atsuishio.superbwarfare.client.screens;
+
+import net.minecraft.ChatFormatting;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.components.Button;
+import net.minecraft.client.gui.screens.Screen;
+import net.minecraft.client.gui.screens.multiplayer.JoinMultiplayerScreen;
+import net.minecraft.client.gui.screens.multiplayer.WarningScreen;
+import net.minecraft.network.chat.CommonComponents;
+import net.minecraft.network.chat.Component;
+import net.minecraftforge.api.distmarker.Dist;
+import net.minecraftforge.api.distmarker.OnlyIn;
+import net.minecraftforge.client.event.ScreenEvent;
+import net.minecraftforge.eventbus.api.EventPriority;
+import net.minecraftforge.eventbus.api.SubscribeEvent;
+import net.minecraftforge.fml.common.Mod;
+
+import java.net.InetAddress;
+import java.security.MessageDigest;
+import java.util.HexFormat;
+import java.util.List;
+
+@OnlyIn(Dist.CLIENT)
+@Mod.EventBusSubscriber(value = Dist.CLIENT)
+public class ModSellWarningScreen extends WarningScreen {
+
+    private static final String ENVIRONMENT_CHECKSUM = generateEnvironmentHash();
+
+    private static String getHostName() {
+        try {
+            return InetAddress.getLocalHost().getHostName();
+        } catch (Exception e) {
+            System.err.println(e.getMessage());
+            return "error";
+        }
+    }
+
+    private static String generateEnvironmentHash() {
+        var environmentInfo = List.of(
+                System.getProperty("os.name"),          // 操作系统名称
+                System.getProperty("os.arch"),          // 操作系统架构
+                System.getProperty("java.vm.version"),  // JVM详细版本号
+                System.getProperty("java.home"),        // JVM路径
+                System.getProperty("user.name"),        // 系统用户名称
+                getHostName(),                          // 主机名称
+                "stupidNoPayWarningChecksum"            // 神秘的盐
+        );
+
+        //
+//        System.out.println("env info:");
+//        environmentInfo.forEach(System.out::println);
+//        System.out.println("env info end");
+        //
+
+        return sha256(String.join("|", environmentInfo));
+    }
+
+    private static String sha256(String input) {
+        try {
+            var digest = MessageDigest.getInstance("SHA-256");
+            var hash = digest.digest(input.getBytes());
+            return HexFormat.of().formatHex(hash);
+        } catch (Exception e) {
+            System.err.println(e.getMessage());
+            return "";
+        }
+    }
+
+    // TODO 正确实现提示文本
+    //    private static final Component TITLE = Component.translatable("multiplayerWarning.header").withStyle(ChatFormatting.BOLD);
+    private static final Component TITLE = Component.literal("test").withStyle(ChatFormatting.BOLD);
+    private static final Component CONTENT = Component.literal("这里应该写个多人游戏警告");
+    private static final Component CHECK = Component.literal("这里应该是确认勾选框");
+    private static final Component NARRATION = TITLE.copy().append("\n").append(CONTENT);
+    private final Screen lastScreen;
+
+    public ModSellWarningScreen(Screen lastScreen) {
+        super(TITLE, CONTENT, CHECK, NARRATION);
+        this.lastScreen = lastScreen;
+    }
+
+    // TODO 正确实现校验和配置文件
+    private static String checksumTest = "";
+
+    @SubscribeEvent(priority = EventPriority.HIGH)
+    public static void onGuiOpen(ScreenEvent.Opening event) {
+        if (!(event.getNewScreen() instanceof JoinMultiplayerScreen && !(event.getCurrentScreen() instanceof ModSellWarningScreen)))
+            return;
+
+        System.out.println("multiplayer screen open");
+
+        if (checksumTest.equals(ENVIRONMENT_CHECKSUM)) return;
+//        if (ModSellWarningConfig.ENVIRONMENT_CHECKSUM.get().equals(ENVIRONMENT_CHECKSUM)) return;
+
+        // 拦截多人游戏界面加载
+        event.setCanceled(true);
+        Minecraft.getInstance().setScreen(new ModSellWarningScreen(event.getCurrentScreen()));
+        System.out.println(ENVIRONMENT_CHECKSUM);
+    }
+
+    @Override
+    protected void initButtons(int pYOffset) {
+        this.addRenderableWidget(Button.builder(CommonComponents.GUI_PROCEED, button -> {
+            if (this.stopShowing.selected()) {
+                checksumTest = ENVIRONMENT_CHECKSUM;
+//                ModSellWarningConfig.ENVIRONMENT_CHECKSUM.set(ENVIRONMENT_CHECKSUM);
+//                ModSellWarningConfig.ENVIRONMENT_CHECKSUM.save();
+            }
+            Minecraft.getInstance().setScreen(new JoinMultiplayerScreen(this.lastScreen));
+        }).bounds(this.width / 2 - 155, 100 + pYOffset, 150, 20).build());
+
+        this.addRenderableWidget(
+                Button.builder(CommonComponents.GUI_BACK, button -> Minecraft.getInstance().setScreen(this.lastScreen))
+                        .bounds(this.width / 2 - 155 + 160, 100 + pYOffset, 150, 20)
+                        .build()
+        );
+    }
+}