aibis-dream/Assets/Scripts/MiniGame/HuoShan/NewExpress/BackgroundTextLayer.cs

using UnityEngine;
using TMPro;
using System.Collections.Generic;
using System.Linq;

namespace AibisDream.MiniGame.HuoShan
{
    /// <summary>
    /// 背景文字层 - 生成和管理大量随机变化的文字，文字间寻找关联形成词语连线
    /// </summary>
    public class BackgroundTextLayer
    {
        private List<TextNode> _allNodes;
        private List<string> _chineseChars;
        private float _fieldWidth;
        private float _fieldHeight;
        private int _nodeCount;
        private Transform _parentTransform;
        private GameObject _textPrefab;
        
        // 文字变化参数
        private float _changeInterval = 0.5f;
        private float _lastChangeTime;
        
        // 连线参数
        private float _connectionRadius = 2f;
        private float _connectionProbability = 0.3f;
        
        public BackgroundTextLayer(float fieldWidth, float fieldHeight, int nodeCount, Transform parentTransform)
        {
            _fieldWidth = fieldWidth;
            _fieldHeight = fieldHeight;
            _nodeCount = nodeCount;
            _parentTransform = parentTransform;
            _allNodes = new List<TextNode>();
            
            // 初始化中文字符集
            InitializeChineseChars();
            
            // 创建文字预制体
            CreateTextPrefab();
            
            // 生成初始节点
            GenerateNodes();
        }
        
        private void InitializeChineseChars()
        {
            _chineseChars = new List<string>();
            // 常用中文字符（可以扩展）
            for (int i = 0x4e00; i <= 0x9fff; i++)
            {
                _chineseChars.Add(char.ConvertFromUtf32(i));
            }
            // 添加一些常用字
            _chineseChars.AddRange(new[] { "的", "是", "在", "了", "和", "有", "就", "不", "人", "都", "一", "一个", "上", "也", "很", "到", "说", "要", "去", "你", "会", "着", "没有", "看", "好", "自己", "这" });
        }
        
        private void CreateTextPrefab()
        {
            _textPrefab = new GameObject("TextNodePrefab");
            _textPrefab.hideFlags = HideFlags.HideAndDontSave;
            
            var textMesh = _textPrefab.AddComponent<TextMeshPro>();
            textMesh.fontSize = 24;
            textMesh.alignment = TextAlignmentOptions.Center;
            textMesh.color = Color.white;
            textMesh.enableWordWrapping = false;
            textMesh.overflowMode = TextOverflowModes.Overflow;
            
            _textPrefab.SetActive(false);
        }
        
        private void GenerateNodes()
        {
            for (int i = 0; i < _nodeCount; i++)
            {
                Vector2 randomPos = new Vector2(
                    Random.Range(-_fieldWidth * 0.5f, _fieldWidth * 0.5f),
                    Random.Range(-_fieldHeight * 0.5f, _fieldHeight * 0.5f)
                );
                
                string randomChar = _chineseChars[Random.Range(0, _chineseChars.Count)];
                TextNode node = new TextNode(randomPos, randomChar);
                
                // 创建GameObject
                GameObject nodeObj = Object.Instantiate(_textPrefab, _parentTransform);
                nodeObj.SetActive(true);
                nodeObj.name = $"TextNode_{i}";
                node.GameObject = nodeObj;
                node.TextComponent = nodeObj.GetComponent<TextMeshPro>();
                
                node.UpdateVisual();
                _allNodes.Add(node);
            }
            
            // 建立初始连接关系
            UpdateConnections();
        }
        
        public void Update(float deltaTime)
        {
            _lastChangeTime += deltaTime;
            
            if (_lastChangeTime >= _changeInterval)
            {
                _lastChangeTime = 0f;
                
                // 随机改变一些文字（排除已选定的和候选的）
                foreach (var node in _allNodes)
                {
                    if (node.State == TextNodeState.Random)
                    {
                        // 随机改变文字
                        if (Random.value < 0.1f) // 10%概率改变
                        {
                            node.Text = _chineseChars[Random.Range(0, _chineseChars.Count)];
                            node.UpdateVisual();
                        }
                        
                        // 随机改变亮度
                        node.Brightness = Random.Range(0.3f, 1f);
                        node.UpdateVisual();
                    }
                }
                
                // 更新连接关系
                UpdateConnections();
            }
        }
        
        private void UpdateConnections()
        {
            // 清除所有连接
            foreach (var node in _allNodes)
            {
                node.ConnectedNodes.Clear();
            }
            
            // 重新建立连接（基于距离和概率）
            for (int i = 0; i < _allNodes.Count; i++)
            {
                for (int j = i + 1; j < _allNodes.Count; j++)
                {
                    var nodeA = _allNodes[i];
                    var nodeB = _allNodes[j];
                    
                    float distance = Vector2.Distance(nodeA.Position, nodeB.Position);
                    
                    if (distance < _connectionRadius && Random.value < _connectionProbability)
                    {
                        nodeA.AddConnection(nodeB);
                        nodeB.AddConnection(nodeA);
                    }
                }
            }
        }
        
        public List<TextNode> GetAllNodes()
        {
            return _allNodes;
        }
        
        public List<TextNode> GetNodesInRange(Vector2 center, float radius)
        {
            return _allNodes.Where(node => 
                Vector2.Distance(node.Position, center) <= radius
            ).ToList();
        }
        
        public void SetNodeState(TextNode node, TextNodeState state)
        {
            node.State = state;
            node.UpdateVisual();
        }
        
        public void Cleanup()
        {
            foreach (var node in _allNodes)
            {
                if (node.GameObject != null)
                {
                    Object.Destroy(node.GameObject);
                }
            }
            _allNodes.Clear();
            
            if (_textPrefab != null)
            {
                Object.Destroy(_textPrefab);
            }
        }
    }
}