{"id":5148,"date":"2021-08-20T16:42:44","date_gmt":"2021-08-20T08:42:44","guid":{"rendered":"https:\/\/yanjingang.com\/blog\/?p=5148"},"modified":"2021-09-01T22:02:50","modified_gmt":"2021-09-01T14:02:50","slug":"%e5%b0%8f%e7%8c%aa%e5%ad%a6u3d-%e5%a1%94%e9%98%b2-%e5%a1%94towerdefense-towers","status":"publish","type":"post","link":"https:\/\/yanjingang.com\/blog\/?p=5148","title":{"rendered":"\u5c0f\u732a\u5b66U3D\u2014\u5854\u9632-\u5854(TowerDefense-Towers)"},"content":{"rendered":"

\u4e0a\u4e00\u8282\uff0c\u6211\u4eec\u5b66\u4e60\u4e86\u5982\u4f55\u5728\u5730\u56fe\u4e2d\u6dfb\u52a0\u51fa\u751f\u70b9\u3001\u654c\u4eba\uff0c\u5e76\u8ba9\u654c\u4eba\u6cbf\u7740\u89c4\u5212\u8def\u5f84\u524d\u5f80\u79bb\u4ed6\u6700\u8fd1\u7684\u76ee\u7684\u5730\u3002\u672c\u8282\u5c06\u91cd\u70b9\u5b66\u4e60\u5982\u4f55\u5c1d\u8bd5\u5efa\u9020\u9632\u5fa1\u5854\u3001\u9501\u5b9a\u5e76\u653b\u51fb\u654c\u4eba\u3002<\/p>\n

\u5854\uff08Towers\uff09<\/h1>\n

\"\"<\/a><\/p>\n

1.\u5efa\u9020\u5854\uff08Building a Tower\uff09<\/h2>\n

\u6e38\u620f\u7684\u76ee\u6807\u662f\u5728\u654c\u4eba\u5230\u8fbe\u76ee\u7684\u5730\u4e4b\u524d\u6d88\u706d\u5b83\u4eec\uff0c\u6240\u4ee5\u6211\u4eec\u9700\u8981\u5728\u9762\u677f\u4e0a\u5efa\u9020\u5c04\u51fb\u5854\u3002<\/p>\n

1.1.\u74e6\u7247\u5185\u5bb9\uff08Tile Content\uff09<\/h3>\n

a.\u5854\u662f\u74e6\u7247\u5185\u5bb9\u7684\u53e6\u4e00\u79cd\u7c7b\u578b\uff0c\u56e0\u6b64\u5c06\u5b83\u4eec\u7684\u6761\u76ee\u6dfb\u52a0\u5230GameTileContent<\/p>\n

\/\/ \u74e6\u7247\u5185\u5bb9\u7c7b\u578b\r\npublic enum GameTileContentType{\r\n  Empty,        \/\/\u8def\r\n  Destination,  \/\/\u76ee\u7684\u5730\r\n  Wall,         \/\/\u5899\r\n  SpawnPoint,   \/\/\u654c\u4eba\u751f\u6210\u70b9\r\n  Tower         \/\/\u5854\r\n}<\/code><\/pre>\n
b.\u5854\u9700\u8981\u5c04\u51fb\uff0c\u6211\u4eec\u4e3a\u4e86\u65b9\u4fbf\u5355\u72ec\u6269\u5c55\uff0c\u521b\u5efa\u4e00\u4e2aTower\u7c7b\uff0c\u7ee7\u627fGameTileContent<\/p>\n
using UnityEngine;\r\n\r\n\/\/ \u5854\uff08\u7ee7\u627fGameTileContent\uff09\r\npublic class Tower : GameTileContent{\r\n  \r\n}<\/code><\/pre>\n
c.\u6211\u4eec\u5148\u4ec5\u652f\u6301\u4e00\u79cd\u5854\uff0c\u56e0\u6b64\u53ef\u4ee5\u901a\u8fc7\u7ed9GameTileContentFactory\u4e00\u4e2a\u5bf9\u5854\u67b6\u9884\u5236\u4ef6\u7684\u5f15\u7528\u6765\u5b9e\u73b0\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7Get\u5b9e\u4f8b\u5316<\/p>\n
\/\/ \u74e6\u7247\u5185\u5bb9\u5de5\u5382\r\npublic class GameTileContentFactory : GameObjectFactory{\r\n    ...\r\n    [SerializeField]\r\n    Tower towerPrefab = default;  \/\/ \u5854\u9884\u5236\u4ef6\r\n    ...\r\n    \/\/ \u751f\u6210\u4e0d\u540c\u7c7b\u578b\u74e6\u7247\r\n    public GameTileContent Get(GameTileContentType type){\r\n      switch(type){\r\n        ...\r\n        case GameTileContentType.towerPrefab:\r\n          return Get(towerPointPrefab);\r\n      }\r\n      ...\r\n    }\r\n    ...\r\n}<\/code><\/pre>\n
1.2.\u9884\u5236\u4f53\uff08Prefab\uff09<\/h3>\n
a.\u53c2\u8003\u5899\uff0c\u4e3a\u5854\u521b\u5efa\u4e00\u4e2a\u9884\u5236\u4ef6\uff0c\u5899\u4f53\u4f5c\u4e3a\u5e95\u5ea7\uff0c\u518d\u5728\u4e0a\u9762\u653e\u4e00\u4e2a\u7acb\u65b9\u4f53\u6765\u4ee3\u8868\u5854\u8eab\uff0c\u518d\u5728\u66f4\u4e0a\u9762\u653e\u4e00\u4e2a\u76f8\u540c\u5927\u5c0f\u7684\u7acb\u65b9\u4f53\uff0c\u4ee3\u8868\u70ae\u5854\uff0c\u7528\u4e8e\u7784\u51c6\u548c\u5c04\u51fb\u3002<\/p>\n
\"\"<\/a> \"\"<\/a><\/p>\n
b.\u5854\u4f1a\u65cb\u8f6c\uff0c\u56e0\u4e3a\u5b83\u6709\u4e00\u4e2a\u78b0\u649e\u5668\uff0c\u7269\u7406\u5f15\u64ce\u9700\u8981\u8ffd\u8e2a\u5b83\u3002\u4f46\u6211\u4eec\u4e0d\u9700\u8981\u90a3\u4e48\u7cbe\u786e\uff0c\u56e0\u4e3a\u6211\u4eec\u4f7f\u7528\u5854\u78b0\u649e\u5668\u53ea\u662f\u4e3a\u4e86\u9009\u62e9\u5355\u5143\u683c\u3002\u53ef\u4ee5\u51d1\u5408\u7528\u4e00\u4e2a\u8fd1\u4f3c\u503c\u3002\u79fb\u9664\u9876\u90e8\u70ae\u5854\u7acb\u65b9\u4f53\u7684\u78b0\u649e\u5668\uff0c\u8c03\u6574\u4e2d\u90e8\u5854\u8eab\u7acb\u65b9\u4f53\u7684\u78b0\u649e\u5668\uff0c\u8ba9\u5b83\u8986\u76d6\u4e24\u4e2a\u3002<\/p>\n
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\"\"<\/a><\/p>\n
c.\u6211\u4eec\u7684\u5854\u9700\u8981\u4f1a\u53d1\u5c04\u6fc0\u5149\u675f\u3002 \u6709\u8bb8\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u53ef\u89c6\u5316\u5b83\uff0c\u8fd9\u91cc\u6211\u4eec\u4ec5\u4f7f\u7528\u62c9\u4f38\u540e\u7684\u534a\u900f\u660e\u7acb\u65b9\u4f53\u6765\u5f62\u6210\u5149\u675f\u3002 \u6bcf\u4e2a\u5854\u5c06\u9700\u8981\u4e00\u4e2a\u81ea\u5df1\u7684\u5149\u675f\uff0c\u56e0\u6b64\u5c06\u5176\u6dfb\u52a0\u5230\u5854\u7684\u9884\u5236\u4ef6\u4e2d\u3002 \u5c06\u5176\u653e\u7f6e\u5728\u70ae\u5854\u5185\uff0c\u4ee5\u4fbf\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u5904\u4e8e\u9690\u85cf\u72b6\u6001\uff0c\u5e76\u4f7f\u5176\u8f83\u5c0f\uff0c\u4f8b\u59820.1<\/p>\n
\"\"<\/a> \"\"<\/a><\/p>\n
d.\u7ed9\u6fc0\u5149\u675f\u9002\u5f53\u7684\u6750\u8d28\u3002 \u8fd9\u91cc\u4f7f\u7528\u6807\u51c6\u7684\u534a\u900f\u660e\u9ed1\u8272\u6750\u8d28\uff0c\u5e76\u5173\u95ed\u4e86\u6240\u6709\u53cd\u5c04\uff0c\u540c\u65f6\u7ed9\u5176\u63d0\u4f9b\u7ea2\u8272<\/p>\n
\"\"<\/a><\/p>\n
\"\"<\/a><\/p>\n
e.\u786e\u4fdd\u6fc0\u5149\u675f\u7acb\u65b9\u4f53\u6ca1\u6709\u78b0\u649e\u5668\uff0c\u540c\u65f6\u5173\u95ed\u9634\u5f71\u6295\u5c04\u548c\u63a5\u6536<\/p>\n
 <\/p>\n
\"\"<\/a><\/p>\n
f.\u5854\u9884\u5236\u5b8c\u6210\u540e\uff0c\u5c06\u5176\u6dfb\u52a0\u5230\u5de5\u5382<\/p>\n
\"\"<\/a><\/p>\n
1.3.\u653e\u7f6e\u5854\uff08Placing Towers\uff09<\/h3>\n
a.\u6dfb\u52a0\u548c\u79fb\u9664\u5854\u7684\u65b9\u6cd5<\/p>\n
\/\/ \u6e38\u620f\u9762\u677f\u5bf9\u8c61\r\npublic class GameBoard : MonoBehaviour{\r\n    ...\r\n    \/\/ \u6dfb\u52a0\u6216\u79fb\u9664\u5854\r\n    public void ToggleTower(GameTile tile){\r\n      if(tile == null){\r\n        return;\r\n      }\r\n      if(tile.Content.Type == GameTileContentType.Tower){\r\n        tile.Content = contentFactory.Get(GameTileContentType.Empty);\r\n        FindPaths();\r\n      }else if(tile.Content.Type == GameTileContentType.Empty){ \/\/\u5728\u7a7a\u74e6\u7247\u548c\u5854\u4e4b\u95f4\u5207\u6362\r\n        tile.Content = contentFactory.Get(GameTileContentType.Tower);\r\n        FindPaths();\r\n      }else if(tile.Content.Type == GameTileContentType.Wall){ \/\/\u5728\u5899\u548c\u5854\u4e4b\u95f4\u5207\u6362\r\n        tile.Content = contentFactory.Get(GameTileContentType.Tower);\r\n        FindPaths();\r\n      }\r\n    }\r\n    ...\r\n}\r\n<\/code><\/pre>\n
b.\u6dfb\u52a0Shift+\u9f20\u6807\u5de6\u952e \u5feb\u6377\u952e\u63a7\u5236<\/p>\n
\/\/ \u6e38\u620f\u5bf9\u8c61\r\npublic class Game : MonoBehaviour{\r\n    ...\r\n    void Update(){\r\n      if(Input.GetMouseButtonDown(0)){  \/\/\u9f20\u6807\u5de6\u952e\u4e8b\u4ef6\r\n        if(Input.GetKey(KeyCode.LeftShift)){  \/\/\u540c\u65f6\u6309\u4e0b\u4e86Shift\r\n          board.ToggleTower(board.GetTile(TouchRay));  \/\/\u6dfb\u52a0\u6216\u79fb\u9664\u5854\r\n        }else{\r\n          board.ToggleWall(board.GetTile(TouchRay));  \/\/\u6dfb\u52a0\u6216\u79fb\u9664\u5899\r\n        }\r\n      }\r\n      ...\r\n    }\r\n\r\n    ...\r\n}\r\n<\/code><\/pre>\n
\"\"<\/a><\/p>\n
1.4.\u963b\u6321\u8def\u5f84\uff08Blocking the Path\uff09<\/h3>\n
a.\u7c7b\u4f3c\u5899\u7684\u65b9\u6cd5\u3002\u4e3a\u4e86\u907f\u514d\u540e\u7eed\u6dfb\u52a0\u66f4\u591a\u963b\u6321\u7c7b\u578b\u65f6\u5230\u5904\u5224\u65ad\uff0c\u8fd9\u91cc\u76f4\u63a5\u5728GameTileContent\u91cc\u6dfb\u52a0\u4e2aIsBlocksPath\u5c5e\u6027\u6765\u63a7\u5236<\/p>\n
\/\/ \u74e6\u7247\u5185\u5bb9\u81ea\u5b9a\u4e49\u7ec4\u4ef6\r\npublic class GameTileContent : MonoBehaviour{\r\n    ...\r\n    public bool IsBlockPath => (Type == GameTileContentType.Wall || Type== GameTileContentType.Tower); \/\/\u5899\u548c\u5854\u90fd\u963b\u6321\u8def\u5f84\r\n    ...\r\n}\r\n<\/code><\/pre>\n
b.\u751f\u6210\u8def\u5f84\u65f6\uff0c\u901a\u8fc7GameTileContent\u8fd9\u4e2a\u5c5e\u6027<\/p>\n
\/\/ \u74e6\u7247\u5bf9\u8c61\r\npublic class GameTile : MonoBehaviour{\r\n    ...\r\n    \/\/ \u53cd\u5411\u8bbe\u7f6e\u8def\u5f84\u5173\u7cfb(\u4ece\u76ee\u7684\u5730\u74e6\u7247\u5f00\u59cb)\r\n    GameTile GrowPathTo(GameTile neighbor, Direction direction){\r\n      ...\r\n      return neighbor.Content.IsBlockPath ? null : neighbor; \/\/\u751f\u957f\u8def\u5f84\u540e\uff0c\u5982\u679c\u90bb\u5c45\u662f\u5899\/\u5854\uff0c\u5219\u8ba4\u4e3a\u8def\u5f84\u963b\u65ad\uff0c\u4e0d\u518d\u8fd4\u56de\u6b64\u74e6\u7247\u5230\u8def\u5f84\u641c\u7d22\u961f\u5217\r\n    }\r\n    ...\r\n}\r\n<\/code><\/pre>\n
\"\"<\/a><\/p>\n
2.\u9501\u5b9a\u654c\u4eba\uff08Targeting Enemies\uff09<\/h2>\n
\u5854\u53ea\u6709\u627e\u5230\u654c\u4eba\uff0c\u624d\u80fd\u53d1\u6325\u4f5c\u7528\u3002 \u4e00\u65e6\u53d1\u73b0\u654c\u4eba\uff0c\u5b83\u8fd8\u5fc5\u987b\u51b3\u5b9a\u5c06\u76ee\u6807\u5bf9\u51c6\u654c\u4eba\u7684\u54ea\u4e00\u90e8\u5206\u3002<\/p>\n
2.1.\u76ee\u6807\u70b9\uff08Target Point\uff09<\/h3>\n
\u6211\u4eec\u4f7f\u7528\u7269\u7406\u5f15\u64ce\u6765\u68c0\u6d4b\u76ee\u6807\u3002 \u5c31\u50cf\u5854\u7684\u78b0\u649e\u5668\u4e00\u6837\uff0c\u6211\u4eec\u4e0d\u9700\u8981\u654c\u4eba\u7684\u5bf9\u649e\u673a\u6765\u5b8c\u5168\u5339\u914d\u5176\u5f62\u72b6\u3002 \u53ef\u4ee5\u7528\u7b80\u5355\u7684\u78b0\u649e\u5668\u6765\u505a\uff0c\u6bd4\u5982\u7403\u4f53\u3002 \u4e00\u65e6\u68c0\u6d4b\u5230\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u9644\u7740\u6709\u78b0\u649e\u5668\u7684\u6e38\u620f\u5bf9\u8c61\u7684\u4f4d\u7f6e\u4f5c\u4e3a\u7784\u51c6\u70b9\u3002<\/p>\n
\u6211\u4eec\u4e0d\u80fd\u5c06\u78b0\u649e\u5668\u9644\u52a0\u5230\u654c\u4eba\u7684\u6839\u5bf9\u8c61\u4e0a\uff0c\u56e0\u4e3a\u78b0\u649e\u5668\u4e00\u76f4\u90fd\u4e0e\u6a21\u578b\u7684\u4f4d\u7f6e\u4e0d\u5339\u914d\uff0c\u5e76\u4e14\u4f1a\u4f7f\u5854\u7784\u51c6\u5730\u9762\u3002 \u56e0\u6b64\uff0c\u6211\u4eec\u5fc5\u987b\u5c06\u78b0\u649e\u5668\u653e\u5728\u6a21\u578b\u4e2d\u7684\u67d0\u4e2a\u4f4d\u7f6e\u3002 \u7269\u7406\u5f15\u64ce\u5c06\u4e3a\u6211\u4eec\u63d0\u4f9b\u5bf9\u8be5\u5bf9\u8c61\u7684\u5f15\u7528\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u5176\u7528\u4e8e\u76ee\u6807\u5b9a\u4f4d\uff0c\u4f46\u662f\u6211\u4eec\u8fd8\u9700\u8981\u8bbf\u95ee\u6839\u5bf9\u8c61\u4e0a\u7684Enemy\u7ec4\u4ef6\u3002 \u8ba9\u6211\u4eec\u521b\u5efa\u4e00\u4e2aTargetPoint\u7ec4\u4ef6\u6765\u7b80\u5316\u8fd9\u4e00\u8fc7\u7a0b\u3002 \u7ed9\u5b83\u4e00\u4e2a\u5c5e\u6027\u4ee5\u4f9b\u79c1\u4eba\u8bbe\u7f6e\u548c\u516c\u5f00\u83b7\u53d6\u654c\u4eba\u7ec4\u4ef6\uff0c\u4ee5\u53ca\u53e6\u4e00\u4e2a\u5c5e\u6027\u4ee5\u83b7\u53d6\u5176\u4e16\u754c\u4f4d\u7f6e\u3002<\/p>\n
using System.Collections;\r\nusing System.Collections.Generic;\r\nusing UnityEngine;\r\n\r\n\/\/ \u76ee\u6807\u70b9\u7ec4\u4ef6\uff08\u6dfb\u52a0\u5230\u654c\u4eba\u9884\u5236\u4ef6\u4e0a\uff09\r\npublic class TargetPoint : MonoBehaviour\r\n{\r\n    \/\/ \u76ee\u6807\u70b9\u4e0a\u7684\u654c\u4eba\u5bf9\u8c61\r\n    public Enemy Enemy { get; private set;}\r\n    \/\/ \u76ee\u6807\u70b9\u5750\u6807\r\n    public Vector3 Position => transform.position;\r\n\r\n    void Awake(){\r\n      Enemy = transform.root.GetComponent<Enemy>();\r\n      Debug.Assert(Enemy != null, \"Target point without Enemy root!\", this);  \/\/\u786e\u4fdd\u654c\u4eba\u7ec4\u4ef6\u5b58\u5728\r\n      Debug.Assert(GetComponent<SphereCollider>() != null, \"Target point without sphere collider!\", this);  \/\/ \u78b0\u649e\u5668\u5e94\u4e0eTargetPoint\u8fde\u63a5\u5230\u76f8\u540c\u7684\u6e38\u620f\u5bf9\u8c61\r\n      Debug.Assert(gameObject.layer == 9, \"Target point on wrong layer!\", this);  \/\/\u786e\u4fdd\u654c\u4eba\u5728Enemy\u56fe\u5c42\u4e0a\r\n    }\r\n}\r\n<\/code><\/pre>\n
b.\u6dfb\u52a0TargetPoint\u7ec4\u4ef6\u548cSphere Collider\u78b0\u649e\u5668\u5230\u654c\u4eba\u7684Cube\u9884\u5236\u4e0a\u3002\u8fd9\u5c06\u4f7f\u5854\u7784\u51c6\u7acb\u65b9\u4f53\u7684\u4e2d\u5fc3\u3002\u4f7f\u7528\u534a\u5f84\u4e3a0.25\u7684\u7403\u4f53\u78b0\u649e\u5668\u3002\u7531\u4e8e\u7acb\u65b9\u4f53\u7684\u6bd4\u4f8b\u4e3a0.5\uff0c\u78b0\u649e\u5668\u7684\u6709\u6548\u534a\u5f84\u4e3a0.125\u3002\u8fd9\u5c31\u4f7f\u5f97\u654c\u4eba\u5fc5\u987b\u5728\u5854\u6210\u4e3a\u6709\u6548\u76ee\u6807\u4e4b\u524d\u5c31\u5728\u89c6\u89c9\u4e0a\u9501\u5b9a\u4e86\u5b83\u7684\u5c04\u7a0b\u3002\u78b0\u649e\u5668\u7684\u5927\u5c0f\u4e5f\u4f1a\u53d7\u5230\u654c\u4eba\u7684\u968f\u673a\u6bd4\u4f8b\u7684\u5f71\u54cd\uff0c\u6240\u4ee5\u5b83\u5728\u6e38\u620f\u4e2d\u7684\u5927\u5c0f\u4e5f\u4f1a\u53d1\u751f\u53d8\u5316\u3002<\/p>\n
\"\"<\/a> \"\"<\/a><\/p>\n
2.2.Enemy\u5c42\uff08Enemy Layer\uff09<\/h3>\n
\u5854\u53ea\u5173\u5fc3\u654c\u4eba\uff0c\u4e0d\u5e94\u8be5\u7784\u51c6\u5176\u4ed6\u4e1c\u897f\uff0c\u56e0\u6b64\u6211\u4eec\u5c06\u6240\u6709\u654c\u4eba\u653e\u5728\u4e00\u4e2a\u4e13\u7528\u7684\u5c42\u4e0a\u3002 \u6211\u4eec\u5c06\u4f7f\u7528\u7b2c9\u5c42\u3002\u901a\u8fc7\u201cLayers & Tags\u7a97\u53e3\u5c06\u5176\u540d\u79f0\u8bbe\u7f6e\u4e3aEnemy\uff0c\u53ef\u4ee5\u901a\u8fc7\u7f16\u8f91\u5668\u53f3\u4e0a\u89d2\u7684Layers\u4e0b\u62c9\u83dc\u5355\u4e2d\u7684Edit Layers\u9009\u9879\u6253\u5f00\u8be5\u7a97\u53e3\u3002<\/p>\n
\"\"<\/a><\/p>\n
\u8be5\u5c42\u4ec5\u7528\u4e8e\u68c0\u6d4b\u654c\u4eba\uff0c\u4e0d\u9002\u7528\u4e8e\u7269\u7406\u76f8\u4e92\u4f5c\u7528\u3002 \u8ba9\u6211\u4eec\u901a\u8fc7\u5728Layer Collision Matrix\u4e2d\u7981\u7528\u5b83\u6765\u8868\u660e\u8fd9\u4e00\u70b9\uff0c\u4f60\u53ef\u4ee5\u5728\u201c\u7f16\u8f91-\u9879\u76ee\u8bbe\u7f6e\u201d\u76842D Physics\u7269\u7406\u9762\u677f\u4e0b\u627e\u5230\u5b83\u3002<\/p>\n
\"\"<\/a><\/p>\n
\u786e\u4fdd\u76ee\u6807\u70b9\u7684\u6e38\u620f\u5bf9\u8c61\u5728\u6b63\u786e\u7684\u56fe\u5c42\u4e0a\u3002 \u654c\u65b9\u9884\u5236\u4ef6\u7684\u5176\u4f59\u90e8\u5206\u53ef\u4ee5\u5728\u5176\u4ed6\u5c42\u4e0a\uff0c\u4f46\u662f\u6700\u597d\u4fdd\u6301\u4e00\u81f4\uff0c\u5c06\u6574\u4e2a\u9884\u5236\u4ef6\u653e\u7f6e\u5728enemy\u5c42\u4e0a\u3002 \u5982\u679c\u4f60\u8981\u66f4\u6539\u6839\u5bf9\u8c61\u7684\u5c42\uff0c\u5219\u53ef\u4ee5\u9009\u62e9\u66f4\u6539\u5176\u6240\u6709\u5b50\u5bf9\u8c61\u3002<\/p>\n
\"\"<\/a><\/p>\n
\u540c\u65f6\uff0c\u64ad\u653e\u5668\u4ea4\u4e92\u5e94\u8be5\u5ffd\u7565\u654c\u4eba\u7684\u78b0\u649e\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7ed9\u7269\u7406\u6dfb\u52a0\u4e00\u4e2alayer Mask\u53c2\u6570\u6765\u505a\u5230\u8fd9\u4e00\u70b9\u3002Raycast GameBoard.GetTile\u3002\u5b83\u6709\u4e00\u4e2a\u53d8\u4f53\uff0c\u4ee5\u5c04\u7ebf\u8ddd\u79bb\u548cLayermask\u4f5c\u4e3a\u9644\u52a0\u53c2\u6570\u3002\u63d0\u4f9b\u9ed8\u8ba4\u56fe\u7684\u6700\u5927\u8303\u56f4\u548clayer mask\uff0c\u53731\u3002<\/p>\n
\/\/ \u6e38\u620f\u9762\u677f\u5bf9\u8c61\r\npublic class GameBoard : MonoBehaviour{\r\n    ...\r\n    \/\/ \u83b7\u53d6\u88ab\u5c04\u7ebf\u96c6\u4e2d\u7684\u74e6\u7247\r\n    public GameTile GetTile(Ray ray){\r\n      \/\/\u662f\u5426\u6709\u7269\u4f53\u88ab\u51fb\u4e2d\r\n      if(Physics.Raycast(ray, out RaycastHit hit, float.MaxValue, 1)){  \/\/\u63d0\u4f9b\u9ed8\u8ba4\u56fe\u7684\u6700\u5927\u8303\u56f4\u4f5c\u4e3a\u5c04\u7ebf\u8ddd\u79bb\uff1b\u4ee5\u53calayer mask\uff0c\u53731\r\n        \/\/ \u6839\u636e\u649e\u51fb\u70b9XZ\u5750\u6807\u786e\u5b9a\u74e6\u7247\r\n        int x = (int)(hit.point.x + size.x * 0.5f);\r\n        int y= (int)(hit.point.z + size.y * 0.5f);\r\n        if(x >=0 && x < size.x && y >= 0 && y < size.y){  \/\/\u74e6\u7247\u5750\u6807\u5904\u4e8e\u9762\u677f\u8fb9\u754c\u5185\r\n          return tiles[x + y * size.x];\r\n        }\r\n      }\r\n      return null;\r\n    }\r\n    ...\r\n}<\/code><\/pre>\n
2.3.\u66f4\u65b0\u74e6\u7247\u5185\u5bb9\uff08Updating Tile Content\uff09<\/h3>\n
\u5854\u53ea\u6709\u5728Game.Update\u4e2d\u89e6\u53d1\u7784\u51c6\u548c\u5c04\u51fb\u52a8\u4f5c\uff0c\u6211\u4eec\u9700\u8981\u5b9e\u73b0\u8fd9\u4e2a\u673a\u5236\u3002<\/p>\n
a.Game.Update\u4e2d\u89e6\u53d1board.GameUpdate<\/p>\n
\/\/ \u6e38\u620f\u5bf9\u8c61\r\npublic class Game : MonoBehaviour{\r\n    ...\r\n    void Update(){\r\n      ...\r\n      \/\/ \u66f4\u65b0\u5854\uff0c\u4f7f\u5176\u7784\u51c6\u654c\u4eba\r\n      board.GameUpdate();\r\n    }\r\n    ...\r\n}\r\n<\/code><\/pre>\n
b.GameBoard.GameUpdate\u4e2d\u89e6\u53d1GameTileContent\u7684\u66f4\u65b0\uff0cGameTileContent\u5217\u8868\u53ea\u6dfb\u52a0Tower\u5854<\/p>\n
\/\/ \u6e38\u620f\u9762\u677f\u5bf9\u8c61\r\npublic class GameBoard : MonoBehaviour{\r\n    ...\r\n    List<GameTileContent> updatingContent = new List<GameTileContent>();  \/\/\u74e6\u7247\u5185\u5bb9\u81ea\u5b9a\u4e49\u7ec4\u4ef6\u5217\u8868\uff08\u76ee\u524d\u53ea\u66f4\u65b0\u5854\uff09\r\n    ...\r\n    \/\/ \u6dfb\u52a0\u6216\u79fb\u9664\u5854\r\n    public void ToggleTower(GameTile tile){\r\n      if(tile == null){\r\n        return;\r\n      }\r\n      if(tile.Content.Type == GameTileContentType.Tower){\r\n        updatingContent.Remove(tile.Content); \/\/ \u53ea\u66f4\u65b0\u5854\r\n        ...\r\n      }else if(tile.Content.Type == GameTileContentType.Empty){ \/\/\u5728\u7a7a\u74e6\u7247\u548c\u5854\u4e4b\u95f4\u5207\u6362\r\n        ...\r\n        if(FindPaths()){\r\n          updatingContent.Add(tile.Content); \/\/ \u66f4\u65b0\u5854\r\n        }\r\n      }else if(tile.Content.Type == GameTileContentType.Wall){ \/\/\u5728\u5899\u548c\u5854\u4e4b\u95f4\u5207\u6362\r\n        ...\r\n        updatingContent.Add(tile.Content); \/\/ \u66f4\u65b0\u5854\r\n      }\r\n    }\r\n    ...\r\n    \/\/ \u89e6\u53d1\u5854\u7684\u66f4\u65b0\r\n    public void GameUpdate(){\r\n      for(int i=0; i<updatingContent.Count; i++){\r\n        updatingContent[i].GameUpdate();\r\n      }\r\n    }\r\n}\r\n<\/code><\/pre>\n
c.GameTileContent\u6dfb\u52a0GameUpdate\u865a\u51fd\u6570\uff0c\u5e76\u5728Tower\u4e2d\u5b9e\u73b0\u8fd9\u4e2a\u51fd\u6570\uff0c\u5728\u51fd\u6570\u5185\u5bfb\u627e\u5c04\u7a0b\u5185\u7684\u654c\u4eba<\/p>\n
\/\/ \u74e6\u7247\u5185\u5bb9\u7c7b\u578b\r\npublic enum GameTileContentType{\r\n    ...\r\n    \/\/ \u865a\u65b9\u6cd5\r\n    public virtual void GameUpdate(){}\r\n}\r\n\r\n\r\n\/\/ \u5854\uff08\u7ee7\u627fGameTileContent\uff09\r\npublic class Tower : GameTileContent{\r\n    \/\/ \u66f4\u65b0\u6e38\u620f\r\n    public override void GameUpdate(){\r\n      Debug.Log(\"Tower GameUpdate!\");\r\n    }\r\n}<\/code><\/pre>\n
2.4.\u76ee\u6807\u8303\u56f4\uff08Targeting Range\uff09<\/h3>\n
\u5854\u5e94\u8be5\u4ec5\u5177\u6709\u6709\u9650\u7684\u76ee\u6807\u8303\u56f4\uff0c\u6211\u4eec\u901a\u8fc7\u5411\u5854\u6dfb\u52a0\u5c5e\u6027\u6765\u8fdb\u884c\u914d\u7f6e\u3002 \u8ddd\u79bb\u662f\u4ece\u5854\u7684\u74e6\u7247\u4e2d\u5fc3\u6d4b\u5f97\u7684\uff0c\u56e0\u6b640.5\u7684\u8303\u56f4\u4ec5\u8986\u76d6\u5176\u81ea\u8eab\u7684\u74e6\u7247\u3002 \u56e0\u6b64\uff0c\u5408\u7406\u7684\u6700\u5c0f\u548c\u9ed8\u8ba4\u8303\u56f4\u5e94\u4e3a1.5\uff0c\u8986\u76d6\u5927\u591a\u6570\u76f8\u90bb\u56fe\u5757\u3002<\/p>\n
\/\/ \u5854\uff08\u7ee7\u627fGameTileContent\uff09\r\npublic class Tower : GameTileContent{\r\n    \/\/ \u5854\u7684\u5c04\u7a0b\u8303\u56f4\r\n    [SerializeField, Range(1.5f, 10.5f)]\r\n    float targetingRange = 1.5f;\r\n}<\/code><\/pre>\n
\"\"<\/a><\/p>\n
\u6211\u4eec\u53ef\u4ee5\u7528Gizmo\u4ee5\u5854\u4e3a\u4e2d\u5fc3\u7ed8\u5236\u4e00\u4e2a\u534a\u5f84\u8303\u56f4\u4e3a\u9ec4\u8272\u7684\u7403\u5f62\u7ebf\u6765\u53ef\u89c6\u5316\u5854\u7684\u653b\u51fb\u8303\u56f4\u3002 \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cOnDrawGizmosSelected\u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u4ec5\u5728\u573a\u666f\u7f16\u8f91\u89c6\u56fe\u4e2d\u9009\u5b9a\u5bf9\u8c61\u65f6\u88ab\u8c03\u7528\uff0c\u5728Game\u8fd0\u884c\u4e0b\u662f\u4e0d\u663e\u793a\u7684\uff0c\u6240\u4ee5\u4e0d\u7528\u5728\u8fd9\u91cc\u7eb3\u95f7\u4e3a\u4ec0\u4e48\u8fd0\u884c\u65f6\u9009\u4e2d\u5854\u4e0d\u663e\u793a\u4e86\u3002<\/p>\n
\/\/ \u5854\uff08\u7ee7\u627fGameTileContent\uff09\r\npublic class Tower : GameTileContent{\r\n    ...\r\n    \/\/ \u573a\u666f\u7f16\u8f91\u89c6\u56fe\u4e2d\u9009\u4e2d\u5854\u65f6\uff0c\u53ef\u89c6\u5316\u5176\u5c04\u7a0b\u8303\u56f4\r\n    void OnDrawGizmosSelected () {\r\n      Debug.Log(\"OnDrawGizmosSelected!\");\r\n  \t\tGizmos.color = Color.yellow;\r\n  \t\tVector3 position = transform.localPosition;\r\n  \t\tposition.y += 0.01f;\r\n  \t\tGizmos.DrawWireSphere(position, targetingRange);\r\n      if(target != null){\r\n        Gizmos.DrawLine(position, target.Position);\r\n      }\r\n    }\r\n}\r\n<\/code><\/pre>\n
\"\"<\/a><\/p>\n
2.5.\u83b7\u5f97\u5e76\u9501\u5b9a\u76ee\u6807\uff08Acquiring a Target & Locking\uff09<\/h3>\n
\u5411\u5854\u4e2d\u6dfb\u52a0\u4e00\u4e2aTargetPoint\u5b57\u6bb5\uff0c\u7528\u6765\u8ddf\u8e2a\u5176\u9501\u5b9a\u7684\u76ee\u6807\u3002<\/p>\n
\u6dfb\u52a0AcquireTarget\u65b9\u6cd5\uff0c\u901a\u8fc7\u4ee5\u5854\u7684\u4f4d\u7f6e\u548c\u8303\u56f4\u6765\u68c0\u7d22\u6240\u6709\u76ee\u6807\uff0c\u5e76\u9009\u62e9\u7b2c\u4e00\u4e2a\u3002<\/p>\n
\u4e3a\u4e86\u907f\u514d\u6bcf\u6b21\u7528\u78b0\u649e\u68c0\u6d4b\u6027\u80fd\u6d88\u8017\u592a\u5927\uff0c\u6211\u4eec\u6dfb\u52a0TrackTarget\u65b9\u6cd5\u6765\u8ffd\u8e2a\u9501\u5b9a\u7684\u76ee\u6807\u662f\u5426\u8131\u79bb\u5c04\u7a0b\uff0c\u6ca1\u8131\u79bb\u65f6\u5c31\u4e0d\u518d\u91cd\u65b0\u626b\u63cf\u5c04\u7a0b\u5185\u7684\u6240\u6709\u654c\u4eba\u4e86\u3002<\/p>\n
\u5f53\u9501\u5b9a\u654c\u4eba\u540e\uff0c\u6211\u4eec\u6682\u65f6\u5148\u901a\u8fc7Log\u6253\u5370\u9501\u5b9a\u7684\u654c\u4eba\u4f4d\u7f6e\u3002<\/p>\n
\/\/ \u5854\uff08\u7ee7\u627fGameTileContent\uff09\r\npublic class Tower : GameTileContent{\r\n    \/\/ \u5854\u7684\u5c04\u7a0b\u8303\u56f4\r\n    [SerializeField, Range(1.5f, 10.5f)]\r\n    float targetingRange = 1.5f;\r\n    \/\/ \u5854\u7684\u653b\u51fb\u76ee\u6807\r\n    TargetPoint target;\r\n    \/\/ \u654c\u4eba\u6240\u5728\u56fe\u5c42\r\n    const int enemyLayerMask = 1 << 9;  \/\/2\u76849\u6b21\u65b9\r\n\r\n    \/\/ \u66f4\u65b0\u6e38\u620f\r\n    public override void GameUpdate(){\r\n      \/\/ \u662f\u5426\u627e\u5230\u653b\u51fb\u76ee\u6807\r\n      if(TrackTarget() || AcquireTarget()){\r\n        Debug.Log(\"Acquired target Position: (\" + target.Enemy.TileIdx\/11 + \",\" +target.Enemy.TileIdx%11  + \") !\");\r\n      }\r\n    }\r\n\r\n    \/\/ \u662f\u5426\u627e\u5230\u653b\u51fb\u76ee\u6807\r\n    bool AcquireTarget(){\r\n      Collider[] targets = Physics.OverlapSphere(transform.localPosition, targetingRange, enemyLayerMask);  \/\/\u7269\u7406\u78b0\u649e\u63a2\u6d4b\uff0c\u8fd4\u56de\u7ed3\u679c\u662f\u4e00\u4e2aCollider\u6570\u7ec4\uff0c\u5305\u542b\u4e0e\u7403\u4f53\u91cd\u53e0\u7684\u6240\u6709\u78b0\u649e\u4f53\r\n      if(targets.Length > 0){\r\n        target = targets[0].GetComponent<TargetPoint>();\r\n        Debug.Assert(target != null, \"Target non-enemy!\", targets[0]);\r\n        return true;\r\n      }\r\n      target = null;\r\n      return false;\r\n    }\r\n\r\n    \/\/ \u8ffd\u8e2a\u76ee\u6807\r\n    bool TrackTarget(){\r\n      if(target == null){\r\n        return false;\r\n      }\r\n      \/\/ \u76ee\u6807\u662f\u5426\u8131\u79bb\u5854\u7684\u653b\u51fb\u8303\u56f4\r\n      Vector3 a = transform.localPosition;\r\n      Vector3 b = target.Position;\r\n      if(Vector3.Distance(a, b) > targetingRange + 0.125f * target.Enemy.Scale){ \/\/0.125f\u4e3a\u78b0\u649e\u5668\u7684\u534a\u5f84\r\n        target = null;\r\n        return false;\r\n      }\r\n      return true;\r\n    }\r\n\r\n    \/\/ \u573a\u666f\u89c6\u56fe\u4e2d\u9009\u4e2d\u5854\u65f6\uff0c\u53ef\u89c6\u5316\u5176\u5c04\u7a0b\u8303\u56f4\r\n    void OnDrawGizmosSelected () {\r\n      Debug.Log(\"OnDrawGizmosSelected!\");\r\n  \t\tGizmos.color = Color.yellow;\r\n  \t\tVector3 position = transform.localPosition;\r\n  \t\tposition.y += 0.01f;\r\n  \t\tGizmos.DrawWireSphere(position, targetingRange);\r\n      if(target != null){\r\n        Gizmos.DrawLine(position, target.Position);\r\n      }\r\n    }\r\n}<\/code><\/pre>\n
2.6.\u907f\u514d\u5185\u5b58\u5206\u914d\uff08Avoiding Memory Allocations\uff09<\/h3>\n
\u4f7f\u7528Physics.OverlapCapsule\u7684\u7f3a\u70b9\u662f\uff0c\u6bcf\u6b21\u8c03\u7528\u90fd\u4f1a\u5206\u914d\u4e00\u4e2a\u65b0\u7684\u6570\u7ec4\u3002 \u901a\u8fc7\u4e00\u6b21\u5206\u914d\u4e00\u4e2a\u6570\u7ec4\u5e76\u5728\u534a\u5f84\u4e4b\u540e\u8c03\u7528\u66ff\u4ee3OverlapCapsuleNonAlloc\u65b9\u6cd5\uff08\u5c06\u6570\u7ec4\u4f5c\u4e3a\u989d\u5916\u7684\u53c2\u6570\uff09\uff0c\u53ef\u4ee5\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\u3002 \u63d0\u4f9b\u7684\u6570\u7ec4\u7684\u957f\u5ea6\u9650\u5236\u4e86\u6211\u4eec\u83b7\u5f97\u591a\u5c11\u7ed3\u679c\uff0c \u8d85\u51fa\u9650\u5236\u7684\u4efb\u4f55\u6f5c\u5728\u76ee\u6807\u90fd\u5c06\u88ab\u5ffd\u7565\u3002 \u7531\u4e8e\u6211\u4eec\u4ecd\u7136\u53ea\u4f7f\u7528\u7b2c\u4e00\u4e2a\u5143\u7d20\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u5904\u7406\u957f\u5ea6\u4e3a1\u7684\u6570\u7ec4\u3002<\/p>\n
\/\/ \u5854\uff08\u7ee7\u627fGameTileContent\uff09\r\npublic class Tower : GameTileContent{\r\n    ...\r\n    \/\/ \u76ee\u6807\u5217\u8868\r\n    static Collider[] targets = new Collider[1]; \/\/\u6bcf\u4e2a\u5854\u53ea\u9700\u8981\u9501\u5b9a\u4e00\u4e2a\u76ee\u6807\uff0c\u5176\u4ed6\u7684\u90fd\u4e22\u6389\r\n    ...\r\n    \/\/ \u662f\u5426\u627e\u5230\u653b\u51fb\u76ee\u6807\r\n    bool AcquireTarget(){\r\n      Vector3 a = transform.localPosition;\r\n      Vector3 b = a;\r\n      b.y += 1.5f;  \/\/\u62c9\u4f38\u78b0\u649e\u5668\u9ad8\u5ea6\uff0c\u6d88\u9664\u6d77\u62d4\u9ad8\u5ea6\u5f71\u54cd\r\n      \/\/Collider[] targets = Physics.OverlapSphere(transform.localPosition, targetingRange, enemyLayerMask);  \/\/\u7269\u7406\u78b0\u649e\u63a2\u6d4b\uff0c\u8fd4\u56de\u7ed3\u679c\u662f\u4e00\u4e2aCollider\u6570\u7ec4\uff0c\u5305\u542b\u4e0e\u7403\u4f53\u91cd\u53e0\u7684\u6240\u6709\u78b0\u649e\u4f53\r\n      \/\/Collider[] targets = Physics.OverlapCapsule(a, b, targetingRange, enemyLayerMask);\r\n      int hits = Physics.OverlapCapsuleNonAlloc(a, b, targetingRange, targets, enemyLayerMask); \/\/\u7269\u7406\u78b0\u649e\u63a2\u6d4b\uff0c\u8fd4\u56de\u6570\u91cf\u5e76\u5c06\u7ed3\u679c\u6570\u7ec4\u653e\u5230targets\u4e2d\r\n      if(hits > 0){ \/\/if(targets.Length > 0){\r\n      ...\r\n    }\r\n    ...\r\n}\r\n<\/code><\/pre>\n
3.\u5c04\u51fb\u654c\u4eba\uff08Shooting Enemies\uff09<\/h2>\n
\u7ec8\u4e8e\u53ef\u4ee5\u5f00\u59cb\u505a\u5c04\u51fb\u4e86\uff0c\u7b49\u7684\u82b1\u90fd\u5feb\u8c22\u4e86\u5427\uff1f\u54c8\u54c8\uff01\u5c04\u51fb\u52a8\u4f5c\u6d89\u53ca\u70ae\u5854\u7784\u51c6\uff0c\u53d1\u5c04\u6fc0\u5149\u5e76\u9020\u6210\u4f24\u5bb3\u3002<\/p>\n
3.1.\u7784\u51c6\uff08Aiming the Turret\uff09<\/h3>\n
a.\u4e3a\u4e86\u5c06\u70ae\u5854\u6307\u5411\u76ee\u6807\uff0c\u9700\u8981\u4e00\u4e2a\u70ae\u5854\u7684transform\u5f15\u7528\uff0c\u6211\u4eec\u4e3a\u5176\u6dfb\u52a0\u4e00\u4e2a\u914d\u7f6e\u5b57\u6bb5\uff0c\u5e76\u8fdb\u884c\u914d\u7f6e<\/p>\n
\/\/ \u5854\uff08\u7ee7\u627fGameTileContent\uff1b\u5854\u5305\u542b\u5e95\u90e8\u5e95\u5ea7\u3001\u4e2d\u90e8\u5854\u8eab\u3001\u9876\u90e8\u70ae\u5854\u4e09\u90e8\u5206\uff09\r\npublic class Tower : GameTileContent{\r\n    ...\r\n    \/\/ \u70ae\u5854\r\n    [SerializeField]\r\n    Transform turret = default; \/\/\u9876\u90e8\u7684\u70ae\u5854\r\n    ...\r\n}<\/code><\/pre>\n
\"\"<\/a><\/p>\n
b.\u5728Tower.GameUpdate\u4e2d\uff0c\u4f7f\u70ae\u5854\u65cb\u8f6c\u9762\u5411\u9501\u5b9a\u7684\u76ee\u6807<\/p>\n
\/\/ \u5854\uff08\u7ee7\u627fGameTileContent\uff1b\u5854\u5305\u542b\u5e95\u90e8\u5e95\u5ea7\u3001\u4e2d\u90e8\u5854\u8eab\u3001\u9876\u90e8\u70ae\u5854\u4e09\u90e8\u5206\uff09\r\npublic class Tower : GameTileContent{\r\n    ...\r\n    \/\/ \u66f4\u65b0\u6e38\u620f\r\n    public override void GameUpdate(){\r\n      \/\/ \u662f\u5426\u627e\u5230\u653b\u51fb\u76ee\u6807\r\n      if(TrackTarget() || AcquireTarget()){\r\n        \/\/ \u5c04\u51fb\u76ee\u6807\r\n        Shoot();\r\n      }\r\n    }\r\n\r\n    \/\/ \u5c04\u51fb\u654c\u4eba\r\n    void Shoot(){\r\n      Vector3 point = target.Position; \/\/\u654c\u4eba\u4f4d\u7f6e\r\n      \/\/ \u65cb\u8f6c\u70ae\u5854\uff0c\u9762\u5411\u654c\u4eba\r\n      turret.LookAt(point);\r\n      \/\/ \u5c04\u51fb\r\n      \/\/ TODO\r\n    }\r\n    ...\r\n}<\/code><\/pre>\n
c.\u8fd0\u884c\u53ef\u4ee5\u770b\u5230\u70ae\u5854\u4f1a\u65cb\u8f6c\u5e76\u9762\u5411\u9501\u5b9a\u76ee\u6807<\/p>\n
\"\"<\/a><\/p>\n
3.2.\u53d1\u5c04\u6fc0\u5149\uff08Shining the Laser\uff09<\/h3>\n
\u6dfb\u52a0\u6fc0\u5149\u675f\u7684transform\u5f15\u7528\uff0c\u6211\u4eec\u4e3a\u5176\u6dfb\u52a0\u4e00\u4e2a\u914d\u7f6e\u5b57\u6bb5\uff0c\u5e76\u8fdb\u884c\u914d\u7f6e\u3002\u5e76\u5728Shoot\u65b9\u6cd5\u4e2d\u4fee\u6539\u6fc0\u5149\u675f\u7684\u65b9\u5411\u3001\u957f\u5ea6\u3001\u4f4d\u7f6e\u3002<\/p>\n
\/\/ \u5854\r\npublic class Tower : GameTileContent{\r\n    ...\r\n    \/\/ \u70ae\u5854\/\u6fc0\u5149\r\n    [SerializeField]\r\n    Transform turret = default, laserBeam = default; \/\/\u9876\u90e8\u7684\u70ae\u5854\u548c\u6fc0\u5149\u5f15\u7528\r\n    Vector3 laserBeamScale; \/\/\u6fc0\u5149\u675f\u5c3a\u5bf8\r\n\r\n    void Awake(){\r\n      laserBeamScale = laserBeam.localScale;  \/\/\u4fdd\u5b58\u6fc0\u5149\u675f\u5c3a\u5bf8\uff0c\u907f\u514d\u6bcf\u6b21\u7533\u8bf7\u5185\u5b58\r\n    }\r\n\r\n    \/\/ \u66f4\u65b0\u6e38\u620f\r\n    public override void GameUpdate(){\r\n      if(TrackTarget() || AcquireTarget()){ \/\/ \u627e\u5230\u653b\u51fb\u76ee\u6807\r\n        \/\/ \u5c04\u51fb\u76ee\u6807\r\n        Shoot();\r\n      }else{  \/\/\u5c04\u7a0b\u5185\u65e0\u76ee\u6807\r\n        \/\/ \u6e05\u9664\u6fc0\u5149\r\n        laserBeam.localScale = Vector3.zero;\r\n      }\r\n    }\r\n    \/\/ \u5c04\u51fb\u654c\u4eba\r\n    void Shoot(){\r\n      Vector3 point = target.Position; \/\/\u654c\u4eba\u4f4d\u7f6e\r\n      \/\/ \u65cb\u8f6c\u70ae\u5854\uff0c\u9762\u5411\u654c\u4eba\r\n      turret.LookAt(point);\r\n      \/\/ \u6fc0\u5149\u675f\u65b9\u5411\u4e0e\u70ae\u5854\u4fdd\u6301\u4e00\u81f4\r\n      laserBeam.localRotation = turret.localRotation;\r\n      \/\/ \u8c03\u6574\u6fc0\u5149\u675f\u957f\u5ea6\uff08\u70ae\u5854-\u654c\u4eba\u8ddd\u79bb\uff09\r\n      float d = Vector3.Distance(turret.position, point);\r\n      laserBeamScale.z = d;\r\n      laserBeam.localScale = laserBeamScale;\r\n      \/\/ \u8c03\u6574\u6fc0\u5149\u675f\u4f4d\u7f6e\uff08\u5854\u548c\u654c\u4eba\u4e2d\u95f4\u70b9\uff09\r\n      laserBeam.localPosition = turret.localPosition + 0.5f * d * laserBeam.forward;\r\n    }\r\n    ...\r\n}\r\n<\/code><\/pre>\n
\u8fd0\u884c\u6d4b\u8bd5\u6548\u679c\uff1a<\/p>\n
\"\"<\/a><\/p>\n
3.3.\u654c\u4eba\u7684\u8840\u91cf\uff08Enemy Health\uff09<\/h3>\n
\u76ee\u524d\u6211\u4eec\u7684\u6fc0\u5149\u675f\u53ea\u662f\u5c04\u5411\u654c\u4eba\uff0c\u5e76\u6ca1\u6709\u5bf9\u654c\u4eba\u9020\u6210\u4f24\u5bb3\u3002 \u6211\u4eec\u4e0d\u60f3\u4e00\u4e0b\u5c31\u6d88\u706d\u654c\u4eba\uff0c\u6240\u4ee5\u8981\u7ed9\u654c\u4eba\u4e00\u4e2a\u751f\u547d\u503c\u5c5e\u6027\uff0c\u5e76\u6dfb\u52a0\u9020\u6210\u4f24\u5bb3\u7684\u65b9\u6cd5ApplyDamage\u3002\u5728GameUpdate\u5f00\u59cb\u65f6\u68c0\u67e5\u751f\u547d\u503c\u662f\u5426\u8017\u5c3d\uff0c\u5982\u679c\u662f\u5219\u9500\u6bc1\u654c\u4eba\u3002<\/p>\n
\/\/ \u654c\u4eba\r\npublic class Enemy : MonoBehaviour{\r\n    ...\r\n    \/\/ \u8840\u91cf\r\n    public float Health { get; private set; }\r\n\r\n    \/\/ \u521d\u59cb\u5316\r\n    public void Initialize(float scale, float pathOffset){\r\n      ...\r\n      Health = 100f * scale;  \/\/ \u8840\u91cf\u9ed8\u8ba4100*\u7f29\u653e\u6bd4\u4f8b\r\n    }\r\n    ...\r\n    \/\/ \u66f4\u65b0\u654c\u4eba\u4f4d\u7f6e\u7b49\u4fe1\u606f\uff08\u654c\u4eba\u6b7b\u4ea1\u65f6\u8fd4\u56defalse\uff09\r\n    public bool GameUpdate(){\r\n      \/\/ \u68c0\u67e5\u654c\u4eba\u751f\u547d\r\n      if(Health <= 0f){\r\n        OriginFactory.Reclaim(this);\r\n        return false;\r\n      }\r\n      ...\r\n    }\r\n    ...\r\n    \/\/ \u5bf9\u654c\u4eba\u9020\u6210\u4f24\u5bb3\r\n    public void ApplyDamage(float damage){\r\n      Debug.Assert(damage >= 0f, \"Negative damage applied.\");\r\n      Health -= damage;\r\n    }\r\n}<\/code><\/pre>\n
3.4.DPS\u6bcf\u79d2\u4f24\u5bb3\uff08Damage per Second\uff09<\/h3>\n
\u73b0\u5728\u9700\u8981\u786e\u5b9a\u6fc0\u5149\u675f\u4f1a\u9020\u6210\u591a\u5927\u7684\u635f\u5bb3\uff0c\u6211\u4eec\u5728\u5854\u4e0a\u589e\u52a0\u6bcf\u79d2\u4f24\u5bb3\u503cdamagePerSecond\u914d\u7f6e\uff0c\u5e76\u5728\u5c04\u51fb\u65f6\u8c03\u7528\u654c\u4eba\u7684\u9020\u6210\u4f24\u5bb3\u65b9\u6cd5\u3002<\/p>\n
\/\/ \u5854\r\npublic class Tower : GameTileContent{\r\n    ...\r\n    \/\/ \u6bcf\u79d2\u4f24\u5bb3\u503c\r\n    [SerializeField, Range(1f, 100f)]\r\n    float damagePerSecond = 10f;\r\n    ...\r\n    \/\/ \u5c04\u51fb\u654c\u4eba\r\n    void Shoot(){\r\n      ...\r\n      \/\/ \u5bf9\u654c\u4eba\u9020\u6210\u4f24\u5bb3\uff08\u964d\u4f4e\u654c\u4eba\u8840\u91cf\uff09\r\n      target.Enemy.ApplyDamage(damagePerSecond * Time.deltaTime);\r\n    }\r\n}<\/code><\/pre>\n
\"\"<\/a><\/p>\n
\"\"<\/a><\/p>\n
 <\/p>\n
3.5.\u968f\u673a\u76ee\u6807\uff08Targeting Random\uff09<\/h3>\n
\u56e0\u4e3a\u76ee\u524d\u603b\u662f\u5728\u6bcf\u4e2a\u5854\u4e2d\u9009\u62e9\u7b2c\u4e00\u4e2a\u53ef\u7528\u7684\u76ee\u6807\uff0c\u6240\u4ee5\u76ee\u6807\u884c\u4e3a\u53d6\u51b3\u4e8e\u7269\u7406\u5f15\u64ce\u68c0\u67e5\u91cd\u53e0\u78b0\u649e\u5668\u7684\u987a\u5e8f\uff0c\u800c\u6211\u4eec\u4e0d\u4e86\u89e3\u5176\u5185\u90e8\u7ec6\u8282\uff0c\u5b9e\u9645\u8fd0\u884c\u770b\u5b83\u901a\u5e38\u4f1a\u5bfc\u81f4\u96c6\u4e2d\u8d77\u706b\uff0c\u4f46\u4e5f\u4e0d\u603b\u662f\u8fd9\u6837\u3002\u6211\u4eec\u7ed9\u4ed6\u6dfb\u52a0\u4e00\u4e9b\u968f\u673a\u6027\u3002<\/p>\n
\/\/ \u5854\r\npublic class Tower : GameTileContent{\r\n    ...\r\n    \/\/ \u9501\u5b9a\u76ee\u6807\u5217\u8868\r\n    static Collider[] targets = new Collider[20]; \/\/\u8d85\u8fc7\u5b9a\u4e49\u957f\u5ea6\u7684\u4f1a\u4e22\u6389\r\n    ...\r\n    \/\/ \u662f\u5426\u627e\u5230\u653b\u51fb\u76ee\u6807\r\n    bool AcquireTarget(){\r\n      ...\r\n      if(hits > 0){\r\n        target = targets[Random.Range(0, hits)].GetComponent<TargetPoint>();  \/\/\u76ee\u524d\u4e3a\u4ece\u63a2\u6d4b\u654c\u4eba\u4e2d\u968f\u673a1\u4e2a\uff0c\u540e\u7eed\u53ef\u8c03\u6574\u4e3a\u4e3a\u4f18\u5148\u8840\u91cf\u4f4e\u7684\u7b49\u7b56\u7565\r\n        ...\r\n      }\r\n      ...\r\n    }\r\n}\r\n<\/code><\/pre>\n
\"\"<\/a><\/p>\n
\u4eca\u5929\u6211\u4eec\u5b66\u4e60\u4e86\u5982\u4f55\u5728\u5730\u56fe\u4e2d\u5efa\u9020\u9632\u5fa1\u5854\u3001\u9501\u5b9a\u5c04\u7a0b\u5185\u7684\u654c\u4eba\uff0c\u5e76\u53d1\u5c04\u6fc0\u5149\u675f\u653b\u51fb\u654c\u4eba\u3002\u4e0b\u4e00\u6b21\uff0c\u6211\u4eec\u5c06\u5b66\u4e60\u5982\u4f55\u8ba9\u70ae\u5854\u53d1\u5c04\u51fa\u8feb\u51fb\u70ae\u5f39\uff0c\u5f62\u6210\u70ae\u5f39\u7a7a\u4e2d\u629b\u7269\u8f68\u8ff9\uff0c\u5e76\u5728\u649e\u51fb\u654c\u4eba\u540e\u53d1\u751f\u7206\u70b8\u3002<\/p>\n
\u4ec0\u4e48\uff1f\u89c9\u5f97\u5854\u548c\u654c\u4eba\u592a\u4e11\uff1f\u522b\u7740\u6025\uff0c\u6b63\u5728\u7814\u7a76\u600e\u4e48\u5bfc\u5165\u6a21\u578b\u548c\u52a8\u753b\u5462\uff0c\u8868\u7740\u6025\u54c8\uff5e<\/p>\n
\u79bb\u76ee\u6807\u53c8\u66f4\u8fd1\u4e00\u6b65\u4e86\u54df\uff5e\uff01<\/p>\n
yan 21.8.22<\/p>\n
\u53c2\u8003\uff1a<\/p>\n
Tower Defense – Towers<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e0a\u4e00\u8282\uff0c\u6211\u4eec\u5b66\u4e60\u4e86\u5982\u4f55\u5728\u5730\u56fe\u4e2d\u6dfb\u52a0\u51fa\u751f\u70b9\u3001\u654c\u4eba\uff0c\u5e76\u8ba9\u654c\u4eba\u6cbf\u7740\u89c4\u5212\u8def\u5f84\u524d\u5f80\u79bb\u4ed6\u6700\u8fd1\u7684\u76ee\u7684\u5730\u3002\u672c\u8282\u5c06\u91cd\u70b9\u5b66\u4e60\u5982\u4f55\u5c1d […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1140],"tags":[884,1141,1145,1144],"_links":{"self":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/5148"}],"collection":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5148"}],"version-history":[{"count":0,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/5148\/revisions"}],"wp:attachment":[{"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5148"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5148"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yanjingang.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5148"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}