优化

docs/perf_hotspots.md

@@ -0,0 +1,12 @@
+# 性能热点初稿
+
+首轮标记：
+
+| 区域 | 说明 | 优先级 | 说明 |
+|------|------|--------|------|
+GameScreen.render | 多次集合遍历 + 远程玩家循环内更新 | 高 | 后续拆分逻辑/渲染阶段 |
+SimpleFighter.update | 物理与攻击状态混杂 | 中 | 拆分到组件式(动作/物理) |
+网络同步(待补) | sendPosition 每帧发送 | 中 | 引入位置压缩/频率限制 |
+清屏/批处理 | 现已静态化 | 已改善 | 继续合并渲染批次 |
+
+后续收集: 帧时间分布 / GC 次数。

pom.xml

@@ -14,71 +14,87 @@
   <properties>
     <maven.compiler.source>21</maven.compiler.source>
     <maven.compiler.target>21</maven.compiler.target>
+    <maven.compiler.release>21</maven.compiler.release>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <gdx.version>1.12.1</gdx.version>
 
   </properties>
 
   <dependencies>
-  <dependency>
-        <groupId>com.badlogicgames.gdx</groupId>
-        <artifactId>gdx</artifactId>
-        <version>1.12.1</version> <!-- 替换为你的 LibGDX 版本 -->
+    <!-- Core LibGDX -->
+    <dependency>
+      <groupId>com.badlogicgames.gdx</groupId>
+      <artifactId>gdx</artifactId>
+      <version>${gdx.version}</version>
+    </dependency>
+
+    <!-- LWJGL2 Desktop Backend (使用 LwjglApplication 而不是 Lwjgl3Application) -->
+    <dependency>
+      <groupId>com.badlogicgames.gdx</groupId>
+      <artifactId>gdx-backend-lwjgl</artifactId>
+      <version>${gdx.version}</version>
+    </dependency>
+
+    <!-- 平台原生库（桌面） -->
+    <dependency>
+      <groupId>com.badlogicgames.gdx</groupId>
+      <artifactId>gdx-platform</artifactId>
+      <version>${gdx.version}</version>
+      <classifier>natives-desktop</classifier>
     </dependency>
 
     <!-- FreeType 字体扩展 -->
-    <dependency>
-        <groupId>com.badlogicgames.gdx</groupId>
-        <artifactId>gdx-freetype</artifactId>
-        <version>1.12.1</version> <!-- 与 LibGDX 版本保持一致 -->
-    </dependency>
-
-    <!-- 桌面平台的 FreeType 原生库 -->
-    <dependency>
-        <groupId>com.badlogicgames.gdx</groupId>
-        <artifactId>gdx-freetype-platform</artifactId>
-        <version>1.12.1</version>
-        <classifier>natives-desktop</classifier>
-    </dependency>
-  <dependency>
-    <groupId>com.badlogicgames.gdx</groupId>
-    <artifactId>gdx-backend-lwjgl</artifactId>
-    <version>1.12.1</version> <!-- 使用你的 LibGDX 版本号 -->
-</dependency>
-<dependency>
-    <groupId>com.badlogicgames.gdx</groupId>
-    <artifactId>gdx-platform</artifactId>
-    <version>1.12.1</version>
-    <classifier>natives-desktop</classifier>
-</dependency>
     <dependency>
       <groupId>com.badlogicgames.gdx</groupId>
-      <artifactId>gdx</artifactId>
-      <version>1.12.1</version>
+      <artifactId>gdx-freetype</artifactId>
+      <version>${gdx.version}</version>
     </dependency>
     <dependency>
       <groupId>com.badlogicgames.gdx</groupId>
-      <artifactId>gdx-backend-lwjgl3</artifactId>
-      <version>1.12.1</version>
-    </dependency>
-    <dependency>
-      <groupId>com.badlogicgames.gdx</groupId>
-      <artifactId>gdx-platform</artifactId>
-      <version>1.12.1</version>
+      <artifactId>gdx-freetype-platform</artifactId>
+      <version>${gdx.version}</version>
       <classifier>natives-desktop</classifier>
     </dependency>
+    <!-- JUnit 5 -->
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter</artifactId>
+      <version>5.10.2</version>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
   <build>
     <plugins>
+      <!-- Enforcer 防止依赖冲突 / 旧 JDK -->
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-enforcer-plugin</artifactId>
+        <version>3.4.1</version>
+        <executions>
+          <execution>
+            <id>enforce</id>
+            <goals><goal>enforce</goal></goals>
+            <configuration>
+              <rules>
+                <requireJavaVersion>
+                  <version>[21,)</version>
+                </requireJavaVersion>
+                <dependencyConvergence/>
+              </rules>
+              <fail>false</fail>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
         <version>3.13.0</version>
         <configuration>
-          <!-- 建议使用与LibGDX兼容的JDK版本，11或17比较合适 -->
-          <source>17</source>
-          <target>17</target>
-          <!-- 移除不必要的预览特性，除非确实需要 -->
+          <!-- 与 properties 中保持一致 -->
+          <source>${maven.compiler.source}</source>
+          <target>${maven.compiler.target}</target>
+          <release>${maven.compiler.release}</release>
         </configuration>
       </plugin>
 
@@ -87,8 +103,6 @@
         <artifactId>exec-maven-plugin</artifactId>
         <version>3.1.0</version>
         <configuration>
-          <!-- 确保这个类路径与你实际的Launcher类位置一致 -->
-          <!-- 例如：如果你的类文件在src/main/java/uno/mloluyu/Launcher.java -->
           <mainClass>uno.mloluyu.desktop.DesktopLauncher</mainClass>
         </configuration>
       </plugin>
@@ -107,6 +121,31 @@
           </archive>
         </configuration>
       </plugin>
+      <!-- 运行 JUnit 5 -->
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-plugin</artifactId>
+        <version>3.2.5</version>
+        <configuration>
+          <useSystemClassLoader>false</useSystemClassLoader>
+        </configuration>
+      </plugin>
+      <!-- 初步覆盖率，仅生成报告，不设阈值 -->
+      <plugin>
+        <groupId>org.jacoco</groupId>
+        <artifactId>jacoco-maven-plugin</artifactId>
+        <version>0.8.11</version>
+        <executions>
+          <execution>
+            <goals><goal>prepare-agent</goal></goals>
+          </execution>
+          <execution>
+            <id>report</id>
+            <phase>test</phase>
+            <goals><goal>report</goal></goals>
+          </execution>
+        </executions>
+      </plugin>
     </plugins>
   </build>
 

src/main/java/uno/mloluyu/characters/ActionStateGuard.java

@@ -0,0 +1,20 @@
+package uno.mloluyu.characters;
+
+/** 提供状态切换验证。 */
+public final class ActionStateGuard {
+    private ActionStateGuard() {
+    }
+
+    public static Action transition(FighterBase fighter, Action next) {
+        Action current = fighter.getCurrentAction();
+        if (current == next)
+            return current;
+        if (!ActionTransitionMap.can(current, next)) {
+            return current;
+        }
+        if (fighter instanceof uno.mloluyu.characters.SimpleFighter sf) {
+            sf.directSetAction(next);
+        }
+        return next;
+    }
+}

src/main/java/uno/mloluyu/characters/ActionTransitionMap.java

@@ -0,0 +1,25 @@
+package uno.mloluyu.characters;
+
+import java.util.*;
+
+/** 定义合法动作迁移，供校验/日志使用。 */
+public final class ActionTransitionMap {
+    private static final Map<Action, Set<Action>> ALLOWED = new EnumMap<>(Action.class);
+    static {
+        allow(Action.IDLE, Action.MOVE, Action.JUMP, Action.ATTACK, Action.DEFEND, Action.HIT, Action.DEAD);
+        allow(Action.MOVE, Action.IDLE, Action.JUMP, Action.ATTACK, Action.HIT, Action.DEAD);
+        allow(Action.JUMP, Action.HIT, Action.ATTACK, Action.DEAD, Action.IDLE, Action.MOVE);
+        allow(Action.ATTACK, Action.HIT, Action.DEAD, Action.IDLE, Action.MOVE);
+        allow(Action.DEFEND, Action.HIT, Action.IDLE, Action.MOVE, Action.DEAD);
+        allow(Action.HIT, Action.IDLE, Action.MOVE, Action.DEAD);
+        allow(Action.DEAD); // 终止状态
+    }
+
+    private static void allow(Action from, Action... tos) {
+        ALLOWED.put(from, new HashSet<>(Arrays.asList(tos)));
+    }
+
+    public static boolean can(Action from, Action to) {
+        return ALLOWED.getOrDefault(from, Collections.emptySet()).contains(to);
+    }
+}

src/main/java/uno/mloluyu/characters/AdvancedFighter.java

@@ -3,14 +3,12 @@ package uno.mloluyu.characters;
 public class AdvancedFighter extends SimpleFighter {
 
     public AdvancedFighter(String name) {
-        super(name); // 调用父类构造函数
+        super(name); 
     }
 
     @Override
     public void attack(String attackType) {
-        // 先使用父类的攻击逻辑来保证 isAttacking/attackTimer/attackbox 等状态被正确设置
         super.attack(attackType);
-        // 在这里可以添加 AdvancedFighter 特有的扩展行为（攻击力、特效等）
-        // 例如：根据 attackType 调整伤害或触发粒子/声音，但不要忘记保留父类的状态设置
+        
     }
 }

src/main/java/uno/mloluyu/characters/FighterBase.java

@@ -0,0 +1,47 @@
+package uno.mloluyu.characters;
+
+import com.badlogic.gdx.math.Rectangle;
+import com.badlogic.gdx.graphics.Color;
+import java.util.concurrent.ThreadLocalRandom;
+
+/** 公共角色基类：后续 Simple/Advanced 统一继承。 */
+public abstract class FighterBase {
+    protected String name;
+    protected Action currentAction = Action.IDLE;
+    protected Rectangle hitbox = new Rectangle(0, 0, 64, 128);
+    protected Rectangle attackbox = new Rectangle(0, 0, 80, 80);
+    protected final Color debugColor;
+
+    public FighterBase(String name) {
+        this.name = name;
+        ThreadLocalRandom r = ThreadLocalRandom.current();
+        float rr = 0.35f + r.nextFloat() * 0.65f;
+        float gg = 0.35f + r.nextFloat() * 0.65f;
+        float bb = 0.35f + r.nextFloat() * 0.65f;
+        this.debugColor = new Color(rr, gg, bb, 1f);
+    }
+
+    public Action getCurrentAction() {
+        return currentAction;
+    }
+
+    public Rectangle getHitbox() {
+        return hitbox;
+    }
+
+    public Rectangle getAttackbox() {
+        return attackbox;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public Color getDebugColor() {
+        return debugColor;
+    }
+
+    protected void setAction(Action next) {
+        this.currentAction = next;
+    }
+}

src/main/java/uno/mloluyu/characters/SimpleFighter.java

@@ -10,21 +10,21 @@ import com.badlogic.gdx.graphics.g2d.SpriteBatch;
 import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
 import com.badlogic.gdx.math.Rectangle;
 import uno.mloluyu.network.NetworkManager;
+import uno.mloluyu.util.GameConstants;
 
 /**
  * 简化版角色类，仅包含移动、攻击、受击等基础功能。
  */
-public class SimpleFighter {
+public class SimpleFighter extends FighterBase {
 
-    private String name; // 角色名称
-    private Action currentAction = Action.IDLE; // 当前动作状态
+    // 继承: name, currentAction, hitbox, attackbox
     private float verticalSpeed = 0f; // 垂直速度（跳跃/下落）
     private boolean isGrounded = true; // 是否着地
     private Rectangle hitbox = new Rectangle(0, 0, 64, 128); // 碰撞盒
     private Rectangle attackbox = new Rectangle(0, 0, 80, 80); // 攻击判定盒
     private boolean isFacingRight = true; // 朝向（右/左）
-    private float speed = 300f; // 水平移动速度
-    private int health = 100; // 生命值
+    private float speed = GameConstants.MOVE_SPEED; // 水平移动速度
+    private int health = 200; // 生命值
     private boolean isAttacking = false; // 是否正在攻击
     private boolean attackJustStarted = false; // 攻击是否刚开始
     private float attackTimer = 0f; // 攻击计时器
@@ -41,7 +41,7 @@ public class SimpleFighter {
     private static final float KNOCKBACK_DURATION = 0.12f;
 
     public SimpleFighter(String name) {
-        this.name = name;
+        super(name);
     }
 
     public void update(float deltaTime) {
@@ -76,10 +76,10 @@ public class SimpleFighter {
         }
 
         if (!isGrounded) {
-            verticalSpeed -= 2500 * deltaTime;
+            verticalSpeed -= GameConstants.GRAVITY * deltaTime;
             hitbox.y += verticalSpeed * deltaTime;
-            if (hitbox.y <= 0) {
-                hitbox.y = 0;
+            if (hitbox.y <= GameConstants.GROUND_Y) {
+                hitbox.y = GameConstants.GROUND_Y;
                 verticalSpeed = 0;
                 isGrounded = true;
                 changeAction(Action.IDLE);
@@ -103,7 +103,7 @@ public class SimpleFighter {
                 hitbox.y + hitbox.height * 0.7f);
     }
 
-    public void handleInput(int keycode, boolean isPressed) {
+    public void handleInput(int keycode, boolean isPressed, float duration) {
         if (isPressed) {
             if (keycode == Input.Keys.LEFT || keycode == Input.Keys.A) {
                 move(-1, Gdx.graphics.getDeltaTime());
@@ -138,12 +138,16 @@ public class SimpleFighter {
     }
 
     public void changeAction(Action newAction) {
-        this.currentAction = newAction;
+        this.currentAction = ActionStateGuard.transition(this, newAction);
+    }
+
+    void directSetAction(Action a) {
+        this.currentAction = a;
     }
 
     public void jump() {
         if (isGrounded) {
-            verticalSpeed = 1000f;
+            verticalSpeed = GameConstants.JUMP_SPEED;
             isGrounded = false;
             changeAction(Action.JUMP);
         }
@@ -181,28 +185,32 @@ public class SimpleFighter {
     }
 
     private void updateAttackbox(String attackType) {
-        float offsetX, offsetY = 20, width = 80, height = 80;
+        float baseOffsetY = 20f;
+        float width = 80f, height = 80f;
+        float offsetX;
+        float offsetY = baseOffsetY;
+        // 先决定尺寸，再根据朝向计算 offset（不再用旧 attackbox.width 避免漂移）
         switch (attackType) {
             case "heavy":
-                offsetX = isFacingRight ? hitbox.width : -100;
-                offsetY = 40;
-                width = 100;
-                height = 100;
-                break;
-            case "light":
-                offsetX = isFacingRight ? hitbox.width - 10 : -attackbox.width + 10;
+                width = 100f;
+                height = 100f;
+                offsetY = 40f;
+                offsetX = isFacingRight ? hitbox.width : -width; // 重击靠近身体或覆盖前方
                 break;
             case "special":
-                offsetX = isFacingRight ? hitbox.width + 20 : -attackbox.width - 20;
-                offsetY = 50;
-                width = 120;
-                height = 60;
+                width = 120f;
+                height = 60f;
+                offsetY = 50f;
+                offsetX = isFacingRight ? hitbox.width + 20f : -width - 20f;
                 break;
+            case "light":
             default:
-                offsetX = isFacingRight ? hitbox.width - 10 : -attackbox.width + 10;
+                // 轻击稍微往前，不再参考旧 attackbox.width
+                offsetX = isFacingRight ? hitbox.width - 10f : -80f + 10f;
+                break;
         }
-        attackbox.setPosition(hitbox.x + offsetX, hitbox.y + offsetY);
         attackbox.setSize(width, height);
+        attackbox.setPosition(hitbox.x + offsetX, hitbox.y + offsetY);
     }
 
     public void attack(String attackType) {
@@ -304,6 +312,13 @@ public class SimpleFighter {
         hitbox.setPosition(x, y);
     }
 
+    /** 若当前 Y 低于地面则贴到地面。 */
+    public void alignToGround() {
+        if (hitbox.y < GameConstants.GROUND_Y) {
+            hitbox.y = GameConstants.GROUND_Y;
+        }
+    }
+
     public float getAttackTimer() {
         return attackTimer;
     }

src/main/java/uno/mloluyu/desktop/BaseScreen.java

@@ -0,0 +1,16 @@
+package uno.mloluyu.desktop;
+
+import com.badlogic.gdx.ScreenAdapter;
+
+/** 所有 Screen 的基础类，集中生命周期钩子扩展。 */
+public abstract class BaseScreen extends ScreenAdapter {
+    protected final MainGame game;
+
+    protected BaseScreen(MainGame game) {
+        this.game = game;
+    }
+
+    /** 提供可选的资源预加载完成回调 */
+    public void onAssetsReady() {
+    }
+}

src/main/java/uno/mloluyu/desktop/CharacterSelectScreen.java

@@ -33,14 +33,12 @@ public class CharacterSelectScreen extends ScreenAdapter implements InputProcess
     private SimpleFighter selectedFighter2;
 
     private final List<Texture> bgs = Arrays.asList(
-            new Texture(Gdx.files.internal("src/main/resources/selectpage/10b_back_blue2p.png")),
-            //new Texture(Gdx.files.internal("src/main/resources/selectpage/back_door.png")),
-            new Texture(Gdx.files.internal("src/main/resources/selectpage/11b_back_red1p.png"))
-    );
+            new Texture(Gdx.files.internal("selectpage/10b_back_blue2p.png")),
+            // new Texture(Gdx.files.internal("selectpage/back_door.png")),
+            new Texture(Gdx.files.internal("selectpage/11b_back_red1p.png")));
     private final List<Texture> charsTexts = Arrays.asList(
-            new Texture(Gdx.files.internal("src/main/resources/selectpage/character_03.png")),
-            new Texture(Gdx.files.internal("src/main/resources/selectpage/character_00.png"))
-    );
+            new Texture(Gdx.files.internal("selectpage/character_03.png")),
+            new Texture(Gdx.files.internal("selectpage/character_00.png")));
     private final List<String> characters = Arrays.asList("Alice", "Reimu", "暂定");
     private Texture profile1p = charsTexts.get(0);
     private Texture profile2p = charsTexts.get(1);
@@ -49,11 +47,13 @@ public class CharacterSelectScreen extends ScreenAdapter implements InputProcess
     private static int selectedIndex = 0;
     private static boolean is1P = true;
 
-    private static final int BUTTON_WIDTH = 300;
-    private static final int BUTTON_HEIGHT = 80;
-    private static final int BUTTON_X = 800;
-    private static final int CONFIRM_Y = 200;
-    private static final int BACK_Y = 100;
+    // 下面这些按钮常量原本用于文本/按钮绘制，当前 UI 逻辑已注释。
+    // 如果后续恢复 renderTexts() 可重新启用；为减少无用警告暂时注释。
+    // private static final int BUTTON_WIDTH = 300;
+    // private static final int BUTTON_HEIGHT = 80;
+    // private static final int BUTTON_X = 800;
+    // private static final int CONFIRM_Y = 200;
+    // private static final int BACK_Y = 100;
 
     public CharacterSelectScreen(MainGame game) {
         this.game = game;
@@ -75,13 +75,14 @@ public class CharacterSelectScreen extends ScreenAdapter implements InputProcess
 
     @Override
     public void render(float delta) {
-        new ClearScreen();
+        // 清屏：使用工具静态方法，避免误用私有构造器
+        ClearScreen.clear();
 
         int mouseX = Gdx.input.getX();
         int mouseY = Gdx.graphics.getHeight() - Gdx.input.getY();
         renderBackground();
         renderCharacters(multiplayerMode);
-//        renderTexts();
+        // renderTexts();
 
         handleInput(mouseX, mouseY);
         if (multiplayerMode) {
@@ -99,7 +100,7 @@ public class CharacterSelectScreen extends ScreenAdapter implements InputProcess
 
     private void renderBackground() {
         batch.begin();
-        for (int i = 0; i < bgs.size(); i ++) {
+        for (int i = 0; i < bgs.size(); i++) {
             batch.draw(bgs.get(i), 0, 528 * i, 1920, 528);
         }
         batch.end();
@@ -107,45 +108,47 @@ public class CharacterSelectScreen extends ScreenAdapter implements InputProcess
 
     private void renderCharacters(boolean multiplayerMode) {
         batch.begin();
-        batch.draw(profile1p, 0, 0, profile1p.getWidth()*3, profile1p.getHeight()*3);
-        batch.draw(profile2p, 0, 528, profile2p.getWidth()*3, profile2p.getHeight()*3);
+        batch.draw(profile1p, 0, 0, profile1p.getWidth() * 3, profile1p.getHeight() * 3);
+        batch.draw(profile2p, 0, 528, profile2p.getWidth() * 3, profile2p.getHeight() * 3);
         batch.end();
     }
-//
-//    private void renderTexts() {
-//        batch.begin();
-//        font.draw(batch, "选择你的角色", 200, 650);
-//        for (int i = 0; i < characters.size(); i++) {
-//            int x = 200 + 30;
-//            int y = 500 - i * 120 + 50;
-//            font.draw(batch, characters.get(i), x, y);
-//
-//        }
-//        if (selectedIndex != -1) {
-//            font.draw(batch, "已选择: " + characters.get(selectedIndex), 200, 100);
-//        }
-//        drawButtonText(CONFIRM_Y, "确认");
-//        drawButtonText(BACK_Y, "返回");
-//        batch.end();
-//    }
-//
+    //
+    // private void renderTexts() {
+    // batch.begin();
+    // font.draw(batch, "选择你的角色", 200, 650);
+    // for (int i = 0; i < characters.size(); i++) {
+    // int x = 200 + 30;
+    // int y = 500 - i * 120 + 50;
+    // font.draw(batch, characters.get(i), x, y);
+    //
+    // }
+    // if (selectedIndex != -1) {
+    // font.draw(batch, "已选择: " + characters.get(selectedIndex), 200, 100);
+    // }
+    // drawButtonText(CONFIRM_Y, "确认");
+    // drawButtonText(BACK_Y, "返回");
+    // batch.end();
+    // }
+    //
 
     private void handleInput(int mouseX, int mouseY) {
-        if (selectedFighter1 != null && selectedFighter2 != null) {
-            if (multiplayerMode) {
-                // 设置唯一玩家 ID 并发送角色选择
-                if (NetworkManager.getInstance().getLocalPlayerId() == null) {
-                    String playerId = UUID.randomUUID().toString();
-                    NetworkManager.getInstance().setLocalPlayerId(playerId);
-                    Gdx.app.log("Network", "设置玩家ID: " + playerId);
-                }
-                NetworkManager.getInstance().sendCharacterSelection(selectedFighter1.getName());
+        // 单人模式：只要1P选择了角色就进入游戏
+        if (!multiplayerMode && selectedFighter1 != null) {
+            game.setScreen(new GameScreen(game, selectedFighter1));
+            return;
+        }
+        // 联机模式：等待双方选择（当前逻辑仍采用2人都选才进入）
+        if (multiplayerMode && selectedFighter1 != null && selectedFighter2 != null) {
+            if (NetworkManager.getInstance().getLocalPlayerId() == null) {
+                String playerId = UUID.randomUUID().toString();
+                NetworkManager.getInstance().setLocalPlayerId(playerId);
+                Gdx.app.log("Network", "设置玩家ID: " + playerId);
             }
+            NetworkManager.getInstance().sendCharacterSelection(selectedFighter1.getName());
             game.setScreen(new GameScreen(game, selectedFighter1));
         }
     }
 
-
     @Override
     public void dispose() {
         batch.dispose();
@@ -168,7 +171,7 @@ public class CharacterSelectScreen extends ScreenAdapter implements InputProcess
             }
             value = true;
         } else {
-            //占坑说是
+            // 占坑说是
         }
         if (i == Input.Keys.Z) {
             if (is1P) {

src/main/java/uno/mloluyu/desktop/DesktopLauncher.java

@@ -3,6 +3,8 @@ package uno.mloluyu.desktop;
 import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
 import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration;
 
+// 日志功能已移除
+
 /**
  * Desktop 平台启动器
  */
@@ -10,6 +12,8 @@ public class DesktopLauncher {
 
     public static void main(String[] args) {
 
+        // 若需要异常抓取，可在此处添加简单的 Thread.setDefaultUncaughtExceptionHandler
+
         LwjglApplicationConfiguration config = new LwjglApplicationConfiguration();
 
         float scale = 1.0F;

src/main/java/uno/mloluyu/desktop/GameScreen.java

@@ -5,6 +5,7 @@ import com.badlogic.gdx.ScreenAdapter;
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.graphics.OrthographicCamera;
 import com.badlogic.gdx.graphics.g2d.SpriteBatch;
+import com.badlogic.gdx.graphics.Texture;
 import com.badlogic.gdx.graphics.GL20;
 import uno.mloluyu.characters.Action;
 import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
@@ -18,6 +19,9 @@ import uno.mloluyu.characters.SimpleFighter;
 import uno.mloluyu.characters.AdvancedFighter;
 import uno.mloluyu.network.NetworkManager;
 import uno.mloluyu.util.ClearScreen;
+import uno.mloluyu.perf.PerfMetrics;
+import uno.mloluyu.util.TimeStepLimiter;
+import uno.mloluyu.util.GameConstants;
 import uno.mloluyu.versatile.FighterController;
 
 public class GameScreen extends ScreenAdapter {
@@ -30,6 +34,37 @@ public class GameScreen extends ScreenAdapter {
     private SpriteBatch batch;
     private ShapeRenderer shapeRenderer;
     private OrthographicCamera camera;
+    private Texture background;
+    // 世界尺寸（基于背景原始尺寸 * 缩放）。如果需要可读取 Texture 宽高后动态设。
+    private float worldWidth;
+    private float worldHeight;
+    // 背景整体缩放倍数：>1 表示背景比屏幕大，可只显示局部
+    private static final float BACKGROUND_SCALE = 1.5f;
+    // 摄像机竖直偏移（正值=镜头上移，让玩家更靠下；这里改为较小的正值防止看不到下方）
+    private static final float CAMERA_Y_OFFSET = 60f;
+    // 允许相机向下多看到的底部扩展（不被 clamp 过早挡住），解决放大 hitbox 下半部分出框
+    private static final float CAMERA_BOTTOM_MARGIN = -30f;
+    // 平滑跟随的垂直插值系数（独立控制 y，防止瞬间跳）
+    private static final float CAMERA_LERP_ALPHA = 0.12f;
+    // ========== 摄像机缩放配置 ==========
+    // 是否使用动态缩放（多人时根据距离自动拉远 / 靠近）
+    private static final boolean CAMERA_DYNAMIC_ZOOM = true;
+    // （保留）固定缩放模式开关 & 数值；若需要强制固定视角可把 CAMERA_DYNAMIC_ZOOM 设 false
+    private static final boolean CAMERA_USE_FIXED_ZOOM = false;
+    private static final float CAMERA_FIXED_ZOOM = 0.80f;
+    // 动态缩放参数：最小与最大（OrthographicCamera: <1 视角更近，>1 更远）
+    private static final float CAMERA_MIN_ZOOM = 0.55f; // 角色很近时
+    private static final float CAMERA_MAX_ZOOM = 1.25f; // 距离很远时
+    // 达到最大缩放所对应的“玩家距离”基准（屏幕世界单位，按你的角色移动范围调）
+    private static final float CAMERA_MAX_DISTANCE = 1800f;
+    // 缩放插值速度（越大越快贴近目标）
+    private static final float CAMERA_ZOOM_LERP = 0.10f;
+    // 显示地面参考线
+    private static final boolean SHOW_GROUND_LINE = true;
+    // 半透明地面条带显示
+    private static final boolean SHOW_GROUND_STRIP = true;
+    private static final float GROUND_STRIP_HEIGHT = 14f; // 条带厚度
+    private static final float GROUND_STRIP_ALPHA = 0.20f; // 透明度 (0~1)
 
     public GameScreen(MainGame game, SimpleFighter player) {
         this.player = player;
@@ -38,18 +73,33 @@ public class GameScreen extends ScreenAdapter {
 
     @Override
     public void show() {
+        // 确保角色初始贴地（地面抬高后老存档/默认 0 需要调整）
+        player.alignToGround();
         camera = new OrthographicCamera(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
         camera.position.set(player.getHitbox().x, player.getHitbox().y, 0); // 初始化摄像机位置
+        // 初始化缩放：动态优先，否则固定
+        if (CAMERA_DYNAMIC_ZOOM) {
+            camera.zoom = CAMERA_MIN_ZOOM;
+        } else if (CAMERA_USE_FIXED_ZOOM) {
+            camera.zoom = CAMERA_FIXED_ZOOM;
+        }
         camera.update();
 
         batch = new SpriteBatch();
         shapeRenderer = new ShapeRenderer();
         Gdx.input.setInputProcessor(controller);
+        // 背景图（与主菜单共用 bg.png），可后续扩展成多关卡背景
+        background = new Texture(Gdx.files.internal("innerbg.png"));
+        worldWidth = background.getWidth() * BACKGROUND_SCALE;
+        worldHeight = background.getHeight() * BACKGROUND_SCALE;
     }
 
     @Override
     public void render(float delta) {
-        new ClearScreen();
+        delta = TimeStepLimiter.clamp(delta);
+        ClearScreen.clear();
+        PerfMetrics.frame(delta);
+        // （原先背景在摄像机更新前绘制，会出现一帧“滞后”错位；已移到摄像机更新后）
 
         // 输入 / 逻辑
         player.update(delta);
@@ -150,7 +200,7 @@ public class GameScreen extends ScreenAdapter {
                         String pid = dt.getKey();
                         // 重生位置简单放原点附近随机
                         float rx = (float) (Math.random() * 200 - 100);
-                        float ry = 0;
+                        float ry = GameConstants.GROUND_Y;
                         NetworkManager.getInstance().sendRespawn(pid, rx, ry);
                         deathTimers.remove(pid);
                     }
@@ -197,6 +247,9 @@ public class GameScreen extends ScreenAdapter {
             }
         }
 
+        // 本地与远程玩家之间简单碰撞（防穿人）——放在摄像机更新前
+        resolvePlayerCollisions();
+
         // 摄像机跟随
         // 摄像头跟随：若有一个远程玩家，则居中于本地和远程玩家中点
         Vector3 targetPos;
@@ -204,32 +257,87 @@ public class GameScreen extends ScreenAdapter {
             SimpleFighter remote = otherPlayers.values().iterator().next();
             float midX = (player.getHitbox().x + remote.getHitbox().x) * 0.5f;
             float midY = (player.getHitbox().y + remote.getHitbox().y) * 0.5f;
-            targetPos = new Vector3(midX, midY, 0);
+            targetPos = new Vector3(midX, midY + CAMERA_Y_OFFSET, 0);
         } else {
             // 默认为跟随本地玩家
-            targetPos = new Vector3(player.getHitbox().x, player.getHitbox().y, 0);
+            targetPos = new Vector3(player.getHitbox().x, player.getHitbox().y + CAMERA_Y_OFFSET, 0);
         }
-        camera.position.lerp(targetPos, 0.1f);
+        // 仅对 x,y 做分量插值，可单独调节速度
+        camera.position.x += (targetPos.x - camera.position.x) * CAMERA_LERP_ALPHA;
+        camera.position.y += (targetPos.y - camera.position.y) * (CAMERA_LERP_ALPHA * 1.1f);
+        // 计算动态缩放目标
+        if (CAMERA_DYNAMIC_ZOOM && otherPlayers.size() >= 1) {
+            // 取所有玩家（本地 + 远程）x 坐标的最大跨度作为距离依据，可扩展为对角线距离
+            float minX = player.getHitbox().x;
+            float maxX = player.getHitbox().x;
+            float minY = player.getHitbox().y;
+            float maxY = player.getHitbox().y;
+            for (SimpleFighter r : otherPlayers.values()) {
+                Rectangle hb = r.getHitbox();
+                if (hb.x < minX)
+                    minX = hb.x;
+                if (hb.x > maxX)
+                    maxX = hb.x;
+                if (hb.y < minY)
+                    minY = hb.y;
+                if (hb.y > maxY)
+                    maxY = hb.y;
+            }
+            float dx = maxX - minX;
+            float dy = maxY - minY;
+            // 这里主要横向对战，优先 dx；若想考虑纵向可用距离 = max(dx, dy*系数)
+            float dist = Math.max(dx, dy * 0.6f);
+            float t = Math.min(1f, dist / CAMERA_MAX_DISTANCE); // 0~1
+            float targetZoom = CAMERA_MIN_ZOOM + (CAMERA_MAX_ZOOM - CAMERA_MIN_ZOOM) * t;
+            camera.zoom += (targetZoom - camera.zoom) * CAMERA_ZOOM_LERP;
+        } else if (CAMERA_USE_FIXED_ZOOM) {
+            // 固定缩放平滑
+            if (Math.abs(camera.zoom - CAMERA_FIXED_ZOOM) > 0.0001f) {
+                camera.zoom += (CAMERA_FIXED_ZOOM - camera.zoom) * 0.25f;
+            }
+        }
+        // 约束摄像机在世界边界内（视口以中心为基准）
+        float halfW = (camera.viewportWidth * camera.zoom) / 2f;
+        float halfH = (camera.viewportHeight * camera.zoom) / 2f;
+        camera.position.x = Math.max(halfW, Math.min(worldWidth - halfW, camera.position.x));
+        float minY = halfH - CAMERA_BOTTOM_MARGIN; // 允许比世界底部再低一些显示底部区域
+        camera.position.y = Math.max(minY, Math.min(worldHeight - halfH, camera.position.y));
         camera.update();
         batch.setProjectionMatrix(camera.combined);
         shapeRenderer.setProjectionMatrix(camera.combined);
 
+        // -------- Background pass --------
+        batch.begin();
+        // 仅绘制背景的局部：通过在更大的缩放空间中直接拉伸整张图并限制摄像机
+        // 若想真正裁剪一部分，可改用纹理区域；此处使用整图放大后让摄像机在其内游走
+        batch.draw(background,
+                0, 0,
+                worldWidth, worldHeight);
+        batch.end();
+
         // 混合
         Gdx.gl.glEnable(GL20.GL_BLEND);
         Gdx.gl.glBlendFunc(GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA);
 
         // -------- Filled pass --------
         shapeRenderer.begin(ShapeRenderer.ShapeType.Filled);
-        drawHitbox(player, Color.BLUE);
+        // 半透明地面条带（先于 hitbox 绘制，这样人物在其上方）
+        if (SHOW_GROUND_STRIP) {
+            float y = GameConstants.GROUND_Y - GROUND_STRIP_HEIGHT * 0.5f; // 居中穿过地面线
+            shapeRenderer.setColor(0.9f, 0.9f, 0.9f, GROUND_STRIP_ALPHA); // 近白轻薄层
+            shapeRenderer.rect(0f, y, worldWidth, GROUND_STRIP_HEIGHT);
+        }
+        drawHitbox(player, player.getDebugColor());
         boolean showPlayerAttack = player.isAttacking()
                 || (player.getCurrentAction() == Action.ATTACK && player.getAttackTimer() > 0);
         if (showPlayerAttack)
-            drawAttackBox(player, 1f, 0f, 0f, 0.35f);
+            // 攻击框颜色改为蓝色（原红色）
+            drawAttackBox(player, 0.0f, 0.45f, 1f, 0.35f);
 
         for (SimpleFighter remote : otherPlayers.values()) {
-            drawHitbox(remote, Color.GREEN);
+            drawHitbox(remote, remote.getDebugColor());
             if (remote.isAttacking())
-                drawAttackBox(remote, 1f, 0f, 0f, 0.25f);
+                drawAttackBox(remote, 0.0f, 0.45f, 1f, 0.25f);
         }
         shapeRenderer.end();
 
@@ -240,11 +348,13 @@ public class GameScreen extends ScreenAdapter {
 
         // -------- Debug line pass --------
         shapeRenderer.begin(ShapeRenderer.ShapeType.Line);
+        if (SHOW_GROUND_LINE) {
+            shapeRenderer.setColor(0.65f, 0.65f, 0.65f, 1f); // 浅灰色参考线
+            shapeRenderer.line(0f, GameConstants.GROUND_Y, worldWidth, GameConstants.GROUND_Y);
+        }
         player.renderDebug(shapeRenderer);
         for (SimpleFighter remote : otherPlayers.values())
             remote.renderDebug(shapeRenderer);
-        shapeRenderer.setColor(Color.WHITE);
-        shapeRenderer.rect(0, 0, 1000, 1000);
         shapeRenderer.end();
         // -------- UI health bar pass --------
         // 使用屏幕坐标绘制血条
@@ -274,18 +384,45 @@ public class GameScreen extends ScreenAdapter {
             idx++;
         }
         shapeRenderer.end();
+        // 原定期性能日志已移除（日志系统删除）
     }
 
     private void drawHitbox(SimpleFighter fighter, Color color) {
         shapeRenderer.setColor(color);
         Rectangle r = fighter.getHitbox();
-        shapeRenderer.rect(r.x, r.y, r.width, r.height);
+        float scale = GameConstants.DEBUG_BOX_SCALE;
+        if (scale <= 1.0001f && scale >= 0.9999f) { // 视为 1
+            shapeRenderer.rect(r.x, r.y, r.width, r.height);
+            return;
+        }
+        float cx = r.x + r.width / 2f;
+        float cy = r.y + r.height / 2f;
+        float w = r.width * scale;
+        float h = r.height * scale;
+        if (GameConstants.DEBUG_SCALE_FROM_CENTER) {
+            shapeRenderer.rect(cx - w / 2f, cy - h / 2f, w, h);
+        } else {
+            shapeRenderer.rect(r.x, r.y, w, h);
+        }
     }
 
     private void drawAttackBox(SimpleFighter fighter, float r, float g, float b, float a) {
         shapeRenderer.setColor(r, g, b, a);
         Rectangle box = fighter.getAttackbox();
-        shapeRenderer.rect(box.x, box.y, box.width, box.height);
+        float scale = GameConstants.DEBUG_BOX_SCALE;
+        if (scale <= 1.0001f && scale >= 0.9999f) {
+            shapeRenderer.rect(box.x, box.y, box.width, box.height);
+            return;
+        }
+        float cx = box.x + box.width / 2f;
+        float cy = box.y + box.height / 2f;
+        float w = box.width * scale;
+        float h = box.height * scale;
+        if (GameConstants.DEBUG_SCALE_FROM_CENTER) {
+            shapeRenderer.rect(cx - w / 2f, cy - h / 2f, w, h);
+        } else {
+            shapeRenderer.rect(box.x, box.y, w, h);
+        }
     }
 
     // private void checkPlayerAttacks() {
@@ -303,6 +440,41 @@ public class GameScreen extends ScreenAdapter {
     public void dispose() {
         batch.dispose();
         shapeRenderer.dispose();
+        if (background != null)
+            background.dispose();
         NetworkManager.getInstance().disconnect();
     }
+
+    /**
+     * 解决本地玩家与每个远程玩家的水平重叠，避免“穿人”视觉效果。
+     * 当前策略：仅移动本地玩家（不修改远程玩家坐标，避免产生需要网络回传的状态）。
+     * 若需要更严格的对等碰撞，可在主机端双向分离并广播，但此处先满足基本需求。
+     */
+    private void resolvePlayerCollisions() {
+        if (otherPlayers.isEmpty())
+            return;
+        Rectangle a = player.getHitbox();
+        for (SimpleFighter remote : otherPlayers.values()) {
+            Rectangle b = remote.getHitbox();
+            if (!a.overlaps(b))
+                continue;
+            // 仅考虑水平最小位移分离（2D 侧向格斗常见做法）
+            float axCenter = a.x + a.width / 2f;
+            float bxCenter = b.x + b.width / 2f;
+            float dx = axCenter - bxCenter; // 正值：本地在右侧
+            float overlapX = (a.width + b.width) / 2f - Math.abs(dx);
+            if (overlapX > 0) {
+                if (dx >= 0) {
+                    a.x += overlapX; // 本地向右推
+                } else {
+                    a.x -= overlapX; // 本地向左推
+                }
+                // 世界边界限制（假设世界从 0 开始到 worldWidth）
+                if (a.x < 0)
+                    a.x = 0;
+                if (a.x + a.width > worldWidth)
+                    a.x = worldWidth - a.width;
+            }
+        }
+    }
 }

src/main/java/uno/mloluyu/desktop/MainGame.java

@@ -1,8 +1,6 @@
 package uno.mloluyu.desktop;
 
 import com.badlogic.gdx.Game;
-import com.badlogic.gdx.Gdx;
-import com.badlogic.gdx.graphics.Texture;
 
 public class MainGame extends Game {
     public static final float WORLD_WIDTH = 1920;

src/main/java/uno/mloluyu/desktop/MainMenuScreen.java

@@ -9,8 +9,6 @@ import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
 import com.badlogic.gdx.graphics.g2d.BitmapFont;
 import com.badlogic.gdx.graphics.g2d.SpriteBatch;
 
-import uno.mloluyu.versatile.FighterController;
-
 import static uno.mloluyu.util.Font.loadChineseFont;
 
 public class MainMenuScreen extends ScreenAdapter {
@@ -32,7 +30,7 @@ public class MainMenuScreen extends ScreenAdapter {
 
     public MainMenuScreen(MainGame game) {
         this.game = game;
-        texture = new Texture(Gdx.files.internal("src\\main\\resources\\bg.png"));
+        texture = new Texture(Gdx.files.internal("bg.png"));
     }
 
     @Override
@@ -46,7 +44,7 @@ public class MainMenuScreen extends ScreenAdapter {
 
     @Override
     public void render(float delta) {
-        Gdx.gl.glClearColor(0,0,0,0);
+        Gdx.gl.glClearColor(0, 0, 0, 0);
         Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
 
         int mouseX = Gdx.input.getX();
@@ -76,6 +74,7 @@ public class MainMenuScreen extends ScreenAdapter {
                 game.setScreen(new CharacterSelectScreen(game));
             } else if (isTouched(mouseX, mouseY, buttonX, settingsY)) {
                 Gdx.app.log("Button", "设置按钮被点击!");
+                game.setScreen(new SettingsScreen(game));
             } else if (isTouched(mouseX, mouseY, buttonX, networkY)) {
                 Gdx.app.log("Button", "联网设置按钮被点击!");
                 game.setScreen(new NetworkSettingsScreen(game));
@@ -92,8 +91,7 @@ public class MainMenuScreen extends ScreenAdapter {
     }
 
     private void drawButtonText(int y, String text) {
-        float textWidth = font.getRegion().getRegionWidth(); // 粗略估算
-        float textX = buttonX + buttonWidth / 2f - text.length() * 20; // 居中估算
+        float textX = buttonX + buttonWidth / 2f - text.length() * 20; // 简单估算居中
         float textY = y + buttonHeight / 2f + 20;
         font.draw(batch, text, textX, textY);
     }
@@ -104,8 +102,11 @@ public class MainMenuScreen extends ScreenAdapter {
 
     @Override
     public void dispose() {
-        if (batch != null) batch.dispose();
-        if (font != null) font.dispose();
-        if (shapeRenderer != null) shapeRenderer.dispose();
+        if (batch != null)
+            batch.dispose();
+        if (font != null)
+            font.dispose();
+        if (shapeRenderer != null)
+            shapeRenderer.dispose();
     }
 }

src/main/java/uno/mloluyu/desktop/NetworkSettingsScreen.java

@@ -3,7 +3,6 @@ package uno.mloluyu.desktop;
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.ScreenAdapter;
 import com.badlogic.gdx.graphics.Color;
-import com.badlogic.gdx.graphics.GL20;
 import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
 import com.badlogic.gdx.graphics.g2d.BitmapFont;
 import com.badlogic.gdx.graphics.g2d.SpriteBatch;
@@ -40,7 +39,8 @@ public class NetworkSettingsScreen extends ScreenAdapter {
 
     @Override
     public void render(float delta) {
-        new ClearScreen();
+        // 使用静态工具方法清屏
+        ClearScreen.clear();
 
         int mouseX = Gdx.input.getX();
         int mouseY = Gdx.graphics.getHeight() - Gdx.input.getY();
@@ -64,6 +64,12 @@ public class NetworkSettingsScreen extends ScreenAdapter {
         drawButtonText(CREATE_ROOM_Y, "创建房间");
         drawButtonText(JOIN_ROOM_Y, "加入房间");
         drawButtonText(EXIT_Y, "返回");
+        // 状态信息
+        NetworkManager nm = NetworkManager.getInstance();
+        String id = nm.getLocalPlayerId();
+        font.draw(batch, "本机ID: " + (id == null ? "(未分配)" : id.substring(0, Math.min(8, id.length()))), 50, 200);
+        font.draw(batch, nm.isHost() ? "当前: 房主" : (nm.isConnected() ? "当前: 已连接客户端" : "当前: 未连接"), 50, 160);
+        font.draw(batch, "在线玩家: " + (nm.getPlayerPositions() == null ? 0 : nm.getPlayerPositions().size()), 50, 120);
         batch.end();
     }
 

src/main/java/uno/mloluyu/desktop/ScreenManager.java

@@ -0,0 +1,25 @@
+package uno.mloluyu.desktop;
+
+/** 简易屏幕管理器，负责切换与异常保护。 */
+public class ScreenManager {
+    private final MainGame game;
+    private BaseScreen current;
+
+    public ScreenManager(MainGame game) {
+        this.game = game;
+    }
+
+    public void set(BaseScreen next) {
+        try {
+            if (current != null) {
+                current.hide();
+                current.dispose();
+            }
+            current = next;
+            game.setScreen(next);
+        } catch (Throwable t) {
+            // 忽略或可加简单 System.err
+            t.printStackTrace();
+        }
+    }
+}

src/main/java/uno/mloluyu/desktop/SettingsScreen.java

@@ -0,0 +1,75 @@
+package uno.mloluyu.desktop;
+
+import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.ScreenAdapter;
+import com.badlogic.gdx.graphics.Color;
+import com.badlogic.gdx.graphics.g2d.BitmapFont;
+import com.badlogic.gdx.graphics.g2d.SpriteBatch;
+import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
+import uno.mloluyu.util.ClearScreen;
+import static uno.mloluyu.util.Font.loadChineseFont;
+
+/**
+ * 简单设置界面占位：未来可扩展(音量/按键设置)。
+ */
+public class SettingsScreen extends ScreenAdapter {
+    private final MainGame game;
+    private SpriteBatch batch;
+    private BitmapFont font;
+    private ShapeRenderer shapeRenderer;
+
+    private static final int BACK_X = 100; // 返回按钮区域
+    private static final int BACK_Y = 100;
+    private static final int BACK_W = 220;
+    private static final int BACK_H = 70;
+
+    public SettingsScreen(MainGame game) {
+        this.game = game;
+    }
+
+    @Override
+    public void show() {
+        batch = new SpriteBatch();
+        shapeRenderer = new ShapeRenderer();
+        font = loadChineseFont();
+        font.setColor(Color.WHITE);
+        font.getData().setScale(2f);
+    }
+
+    @Override
+    public void render(float delta) {
+        ClearScreen.clear();
+        int mouseX = Gdx.input.getX();
+        int mouseY = Gdx.graphics.getHeight() - Gdx.input.getY();
+
+        // 绘制背景与返回按钮
+        shapeRenderer.begin(ShapeRenderer.ShapeType.Filled);
+        shapeRenderer.setColor(Color.DARK_GRAY);
+        shapeRenderer.rect(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
+        boolean backHover = isHovered(mouseX, mouseY, BACK_X, BACK_Y, BACK_W, BACK_H);
+        shapeRenderer.setColor(backHover ? Color.LIGHT_GRAY : Color.GRAY);
+        shapeRenderer.rect(BACK_X, BACK_Y, BACK_W, BACK_H);
+        shapeRenderer.end();
+
+        batch.begin();
+        font.draw(batch, "设置 (占位界面)", 100, Gdx.graphics.getHeight() - 120);
+        font.draw(batch, "此处可添加: 音量 / 按键 / 分辨率 / 语言 等", 100, Gdx.graphics.getHeight() - 180);
+        font.draw(batch, "返回", BACK_X + 50, BACK_Y + 45);
+        batch.end();
+
+        if (Gdx.input.justTouched() && backHover) {
+            game.setScreen(new MainMenuScreen(game));
+        }
+    }
+
+    private boolean isHovered(int x, int y, int bx, int by, int bw, int bh) {
+        return x >= bx && x <= bx + bw && y >= by && y <= by + bh;
+    }
+
+    @Override
+    public void dispose() {
+        batch.dispose();
+        font.dispose();
+        shapeRenderer.dispose();
+    }
+}

src/main/java/uno/mloluyu/desktop/StartScreen.java

@@ -1,17 +1,17 @@
 package uno.mloluyu.desktop;
 
 import com.badlogic.gdx.Gdx;
-import com.badlogic.gdx.Screen;
 import com.badlogic.gdx.graphics.GL20;
 import com.badlogic.gdx.graphics.Texture;
+import uno.mloluyu.util.ResourcePaths;
 
 /**
  * 启动屏幕类
  * 显示游戏Logo并在3秒后切换到主菜单界面
  */
-public class StartScreen implements Screen {
+public class StartScreen extends BaseScreen {
 
-	private MainGame mainGame;
+	private MainGame mainGame; // TODO: 后续可直接用BaseScreen.game
 
 	private Texture logoTexture;
 	private com.badlogic.gdx.graphics.g2d.SpriteBatch batch;
@@ -19,8 +19,9 @@ public class StartScreen implements Screen {
 	private float deltaSum;
 
 	public StartScreen(MainGame mainGame) {
+		super(mainGame);
 		this.mainGame = mainGame;
-		logoTexture = new Texture(Gdx.files.internal("logo.png"));
+		logoTexture = new Texture(Gdx.files.internal(ResourcePaths.LOGO));
 		batch = new com.badlogic.gdx.graphics.g2d.SpriteBatch();
 	}
 
@@ -36,7 +37,6 @@ public class StartScreen implements Screen {
 		if (deltaSum >= .01F) {
 			if (mainGame != null) {
 				mainGame.showGameScreen();
-				System.out.println("已经切换到主菜单");
 				return;
 			}
 		}

src/main/java/uno/mloluyu/network/NetworkManager.java

@@ -73,6 +73,14 @@ public class NetworkManager {
         }
     }
 
+    /**
+     * 本地玩家所选角色（仅本地缓存，远程映射存于 playerCharacters）。
+     * 供界面或后续同步逻辑查询。
+     */
+    public String getLocalCharacter() {
+        return localCharacter;
+    }
+
     public void receiveMessage(String message) {// 解析消息
 
         if (message.startsWith("POS:")) {

src/main/java/uno/mloluyu/perf/PerfMetrics.java

@@ -0,0 +1,20 @@
+package uno.mloluyu.perf;
+
+/** 简单性能指标收集(首版)。 */
+public final class PerfMetrics {
+    private static long frameCount;
+    private static double accumTime;
+    private static double maxFrame = 0;
+
+    public static void frame(double delta) {
+        frameCount++;
+        accumTime += delta;
+        if (delta > maxFrame)
+            maxFrame = delta;
+    }
+
+    public static String summary() {
+        double avg = frameCount == 0 ? 0 : accumTime / frameCount;
+        return String.format("frames=%d avg=%.4f max=%.4f", frameCount, avg, maxFrame);
+    }
+}

src/main/java/uno/mloluyu/util/ClearScreen.java

@@ -3,8 +3,12 @@ package uno.mloluyu.util;
 import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.graphics.GL20;
 
-public class ClearScreen {
-    public ClearScreen() {
+/** 清屏工具：改为静态方法避免每帧 new 对象。 */
+public final class ClearScreen {
+    private ClearScreen() {
+    }
+
+    public static void clear() {
         Gdx.gl.glClearColor(0.3F, 0.3F, 0.5F, 1);
         Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
     }

src/main/java/uno/mloluyu/util/GameConstants.java

@@ -0,0 +1,32 @@
+package uno.mloluyu.util;
+
+/**
+ * 全局游戏常量集中放置。
+ */
+public final class GameConstants {
+    /**
+     * 地面（空气墙）Y 坐标。抬高后便于更好构图。
+     */
+    public static final float GROUND_Y = 180f; // 可按需要再调
+
+    // 角色移动/物理参数（集中配置便于统一手感调节）
+    // 用户要求：速度 *2，跳跃 *3（基于当前 520 / 1250）
+    public static final float MOVE_SPEED = 1040f; // 520 *2 (最初 ~300)
+    // 调低跳跃：更低高度 + 更短滞空：v0 ↓，同时重力 ↑
+    // 说明：上升时间 t_up = v0 / g，本次取 v0=1500, g=3200 =>
+    // t_up≈0.47s，总滞空≈0.94s，高度≈(v0^2)/(2g)≈351
+    // 若想再更低：JUMP_SPEED 1400 + GRAVITY 3400；再更高一点：JUMP_SPEED 1600 + GRAVITY 3000。
+    public static final float JUMP_SPEED = 1500f;
+    public static final float GRAVITY = 3200f; // 加大重力让落地更快
+
+    // 调试命中盒渲染缩放（=1 表示真实大小；之前放大 3.6 现在回归可控）
+    // 调试盒缩放：1 = 实际大小；若想放大显示结构，可调大。
+    public static final float DEBUG_BOX_SCALE = 1.0f;
+    // 是否按中心放大（true 则保持角色中心位置，不会视觉漂移）
+    public static final boolean DEBUG_SCALE_FROM_CENTER = true;
+
+    // （可选）相机或后续平衡参数也可集中放这里
+
+    private GameConstants() {
+    }
+}

src/main/java/uno/mloluyu/util/ResourcePaths.java

@@ -0,0 +1,12 @@
+package uno.mloluyu.util;
+
+/** 统一资源常量，避免魔法字符串散落。 */
+public final class ResourcePaths {
+    private ResourcePaths() {
+    }
+
+    public static final String LOGO = "logo.png";
+    public static final String FONT_MAIN = "FLyouzichati-Regular-2.ttf";
+    public static final String CHARACTER_ROOT = "character/";
+    public static final String UI_SKIN_JSON = "ui/uiskin.json";
+}

src/main/java/uno/mloluyu/util/TimeStepLimiter.java

@@ -0,0 +1,13 @@
+package uno.mloluyu.util;
+
+/** 限制delta时间，防止窗口拖拽/卡顿后出现物理跳跃。 */
+public final class TimeStepLimiter {
+    private TimeStepLimiter() {
+    }
+
+    private static final float MAX_DELTA = 1f / 30f; // 上限: 相当于最低30FPS
+
+    public static float clamp(float delta) {
+        return delta > MAX_DELTA ? MAX_DELTA : Math.max(delta, 0f);
+    }
+}

src/test/java/uno/mloluyu/assets/AssetsExistenceTest.java

@@ -0,0 +1,22 @@
+package uno.mloluyu.assets;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.List;
+
+public class AssetsExistenceTest {
+    private static final Path RES = Path.of("src", "main", "resources");
+
+    @Test
+    void testCoreAssetsPresent() {
+        List<String> required = List.of("logo.png", "character/alice/alice.png", "character/reimu/reimu-0.png",
+                "ui/uiskin.json");
+        for (String r : required) {
+            Path p = RES.resolve(r);
+            Assertions.assertTrue(Files.exists(p), "缺失资源: " + r);
+        }
+    }
+}

src/test/java/uno/mloluyu/characters/ActionStateTest.java

@@ -0,0 +1,21 @@
+package uno.mloluyu.characters;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class ActionStateTest {
+    @Test
+    void testLegalTransitionIdleToMove() {
+        SimpleFighter f = new SimpleFighter("Test");
+        f.changeAction(Action.MOVE);
+        Assertions.assertEquals(Action.MOVE, f.getCurrentAction());
+    }
+
+    @Test
+    void testIllegalTransitionDeadToMove() {
+        SimpleFighter f = new SimpleFighter("Test");
+        f.changeAction(Action.DEAD);
+        f.changeAction(Action.MOVE); // 应被拒绝
+        Assertions.assertEquals(Action.DEAD, f.getCurrentAction());
+    }
+}

target/maven-archiver/pom.properties

@@ -0,0 +1,3 @@
+artifactId=game
+groupId=uno.mloluyu
+version=1.0-SNAPSHOT

target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst

@@ -1,6 +1,7 @@
 uno\mloluyu\desktop\StartScreen.class
 uno\mloluyu\desktop\NetworkSettingsScreen$1.class
 uno\mloluyu\network\NetworkManager.class
+uno\mloluyu\characters\FighterAnimationManager.class
 uno\mloluyu\desktop\CharacterSelectScreen.class
 uno\mloluyu\versatile\FighterController.class
 uno\mloluyu\desktop\MainGame.class

target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst

@@ -1,17 +1,28 @@
 C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\characters\Action.java
+C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\characters\ActionStateGuard.java
+C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\characters\ActionTransitionMap.java
 C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\characters\AdvancedFighter.java
+C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\characters\FighterAnimationManager.java
+C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\characters\FighterBase.java
 C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\characters\SimpleFighter.java
+C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\desktop\BaseScreen.java
 C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\desktop\CharacterSelectScreen.java
 C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\desktop\DesktopLauncher.java
 C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\desktop\GameScreen.java
 C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\desktop\MainGame.java
 C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\desktop\MainMenuScreen.java
 C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\desktop\NetworkSettingsScreen.java
+C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\desktop\ScreenManager.java
+C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\desktop\SettingsScreen.java
 C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\desktop\StartScreen.java
 C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\network\ConnectClient.java
 C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\network\ConnectServer.java
 C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\network\NetworkManager.java
+C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\perf\PerfMetrics.java
 C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\util\ClearScreen.java
 C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\util\Font.java
+C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\util\GameConstants.java
+C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\util\ResourcePaths.java
 C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\util\SimpleFormatter.java
+C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\util\TimeStepLimiter.java
 C:\Users\www\Documents\Game\格斗游戏\Game\src\main\java\uno\mloluyu\versatile\FighterController.java

target/maven-status/maven-compiler-plugin/testCompile/default-testCompile/inputFiles.lst

@@ -0,0 +1,2 @@
+C:\Users\www\Documents\Game\格斗游戏\Game\src\test\java\uno\mloluyu\assets\AssetsExistenceTest.java
+C:\Users\www\Documents\Game\格斗游戏\Game\src\test\java\uno\mloluyu\characters\ActionStateTest.java