进一步完善服务器功能，添加远程命令系统，踢人系统

Scene/SmallGame/SnakeGame.gd

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+extends Panel
+
+# 游戏常量
+const GRID_SIZE = 20
+const GRID_WIDTH = 30
+const GRID_HEIGHT = 30
+
+# 方向枚举
+enum Direction {
+	UP,
+	DOWN,
+	LEFT,
+	RIGHT
+}
+
+# 游戏变量
+var snake_body = []
+var snake_direction = Direction.RIGHT
+var next_direction = Direction.RIGHT
+var food_position = Vector2()
+var score = 0
+var game_over = false
+
+# 节点引用
+@onready var game_area = $GameArea
+@onready var score_label = $ScoreLabel
+@onready var game_over_label = $GameOverLabel
+@onready var game_timer = $GameTimer
+
+func _ready():
+	# 连接定时器信号
+	game_timer.timeout.connect(_on_game_timer_timeout)
+	
+	# 设置游戏区域样式
+	game_area.modulate = Color(0.2, 0.2, 0.2, 1.0)
+	
+	# 初始化游戏
+	init_game()
+
+func init_game():
+	# 重置游戏状态
+	game_over = false
+	score = 0
+	snake_direction = Direction.RIGHT
+	next_direction = Direction.RIGHT
+	
+	# 初始化蛇身
+	snake_body.clear()
+	snake_body.append(Vector2(5, 5))
+	snake_body.append(Vector2(4, 5))
+	snake_body.append(Vector2(3, 5))
+	
+	# 生成食物
+	generate_food()
+	
+	# 更新UI
+	update_score()
+	game_over_label.visible = false
+	
+	# 启动定时器
+	game_timer.start()
+
+func _input(event):
+	if event is InputEventKey and event.pressed:
+		if game_over:
+			if event.keycode == KEY_SPACE:
+				init_game()
+			return
+		
+		# 控制蛇的方向
+		match event.keycode:
+			KEY_UP, KEY_W:
+				if snake_direction != Direction.DOWN:
+					next_direction = Direction.UP
+			KEY_DOWN, KEY_S:
+				if snake_direction != Direction.UP:
+					next_direction = Direction.DOWN
+			KEY_LEFT, KEY_A:
+				if snake_direction != Direction.RIGHT:
+					next_direction = Direction.LEFT
+			KEY_RIGHT, KEY_D:
+				if snake_direction != Direction.LEFT:
+					next_direction = Direction.RIGHT
+
+func _on_game_timer_timeout():
+	if game_over:
+		return
+	
+	# 更新方向
+	snake_direction = next_direction
+	
+	# 移动蛇
+	move_snake()
+	
+	# 检查碰撞
+	check_collisions()
+	
+	# 重绘游戏
+	queue_redraw()
+
+func move_snake():
+	var head = snake_body[0]
+	var new_head = head
+	
+	# 根据方向计算新的头部位置
+	match snake_direction:
+		Direction.UP:
+			new_head = Vector2(head.x, head.y - 1)
+		Direction.DOWN:
+			new_head = Vector2(head.x, head.y + 1)
+		Direction.LEFT:
+			new_head = Vector2(head.x - 1, head.y)
+		Direction.RIGHT:
+			new_head = Vector2(head.x + 1, head.y)
+	
+	# 添加新头部
+	snake_body.insert(0, new_head)
+	
+	# 检查是否吃到食物
+	if new_head == food_position:
+		# 增加分数
+		score += 10
+		update_score()
+		
+		# 生成新食物
+		generate_food()
+	else:
+		# 移除尾部
+		snake_body.pop_back()
+
+func check_collisions():
+	var head = snake_body[0]
+	
+	# 检查边界碰撞
+	if head.x < 0 or head.x >= GRID_WIDTH or head.y < 0 or head.y >= GRID_HEIGHT:
+		game_over = true
+		show_game_over()
+		return
+	
+	# 检查自身碰撞
+	for i in range(1, snake_body.size()):
+		if head == snake_body[i]:
+			game_over = true
+			show_game_over()
+			return
+
+func generate_food():
+	var attempts = 0
+	while attempts < 100:  # 防止无限循环
+		food_position = Vector2(
+			randi() % GRID_WIDTH,
+			randi() % GRID_HEIGHT
+		)
+		
+		# 确保食物不在蛇身上
+		var food_on_snake = false
+		for segment in snake_body:
+			if segment == food_position:
+				food_on_snake = true
+				break
+		
+		if not food_on_snake:
+			break
+		
+		attempts += 1
+
+func update_score():
+	score_label.text = "分数: " + str(score)
+
+func show_game_over():
+	game_timer.stop()
+	game_over_label.visible = true
+
+func _draw():
+	if not game_area:
+		return
+	
+	# 获取游戏区域的位置和大小
+	var area_pos = game_area.position
+	var area_size = game_area.size
+	
+	# 计算网格大小
+	var cell_width = area_size.x / GRID_WIDTH
+	var cell_height = area_size.y / GRID_HEIGHT
+	
+	# 绘制蛇身
+	for i in range(snake_body.size()):
+		var segment = snake_body[i]
+		var rect = Rect2(
+			area_pos.x + segment.x * cell_width,
+			area_pos.y + segment.y * cell_height,
+			cell_width - 1,
+			cell_height - 1
+		)
+		
+		# 头部用不同颜色
+		var color = Color.GREEN if i == 0 else Color.LIME_GREEN
+		draw_rect(rect, color)
+	
+	# 绘制食物
+	var food_rect = Rect2(
+		area_pos.x + food_position.x * cell_width,
+		area_pos.y + food_position.y * cell_height,
+		cell_width - 1,
+		cell_height - 1
+	)
+	draw_rect(food_rect, Color.RED)