Roguelike随机地下城

建立墙Wall

建立墙Wall

现在我们有十五种上下左右门组合的墙的资源，我们分别命名设置十五个预制体，方便我们后续的使用。
我们只需要建立一个空的GameObject，然后将我们的资源放入作为子集即可。

接下来我们需要在代码中获得这些预制体。
如果我们都用Public GameObject来生成，这样显得我们代码很乱。
所以这里我定义了一个新的类，用来存放这些预制体。
这里为了让我们的Unity识别出来，我们需要在类上面加入**[System.Serializable]**，这样才能被Unity识别到。

[System.Serializable]
public class WallType
{
    
    
    public GameObject singleLeft, singleRight, singleUp, singleBottom,
                      doubleUL, doubleLR, doubleBL, doubleUR, doubleUB, doubleBR,
                      tripleULR, tripleUBL, tripleUBR, tripleBLR,
                      fourDoors;
}

这样回到Unity中就可以将预制体放入对应的框里。

接下来就要实现在每个房间生成对应的预制体。
之前在Room脚本中我们可以判断一个房间有上下左右那个门，有几个开口DoorNumber。
所以我们就可以通过一个简单的Switch语句来判断有几个门就在对应的有几个门的预制体中直接挑选我们的预制体，比如DoorNumber为1，那么就在有一个门的预制体中找到对应有上下左右那个门的预制体。
通过我们定义的四个方向来判断有哪个方向的门。

        newRoom.roomUp = Physics2D.OverlapCircle(roomPosition + new Vector3(0, yOffset, 0), 0.2f, roomLayer);
        newRoom.roomDown = Physics2D.OverlapCircle(roomPosition + new Vector3(0, -yOffset, 0), 0.2f, roomLayer);
        newRoom.roomLeft = Physics2D.OverlapCircle(roomPosition + new Vector3(-xOffset, 0, 0), 0.2f, roomLayer);
        newRoom.roomRight = Physics2D.OverlapCircle(roomPosition + new Vector3(xOffset, 0, 0), 0.2f, roomLayer);

最后我们通过Instantiate方法来生成预制体即可。

    public void SetupRoom(Room newRoom,Vector3 roomPosition)
    {
    
    
        newRoom.roomUp = Physics2D.OverlapCircle(roomPosition + new Vector3(0, yOffset, 0), 0.2f, roomLayer);
        newRoom.roomDown = Physics2D.OverlapCircle(roomPosition + new Vector3(0, -yOffset, 0), 0.2f, roomLayer);
        newRoom.roomLeft = Physics2D.OverlapCircle(roomPosition + new Vector3(-xOffset, 0, 0), 0.2f, roomLayer);
        newRoom.roomRight = Physics2D.OverlapCircle(roomPosition + new Vector3(xOffset, 0, 0), 0.2f, roomLayer);

        newRoom.UpdateRoom();

        switch (newRoom.doorNumber)
        {
    
    
            case 1:
                if (newRoom.roomUp)
                    Instantiate(wallType.singleUp, roomPosition, Quaternion.identity);
                if (newRoom.roomDown)
                    Instantiate(wallType.singleBottom, roomPosition, Quaternion.identity);
                if (newRoom.roomLeft)
                    Instantiate(wallType.singleLeft, roomPosition, Quaternion.identity);
                if (newRoom.roomRight)
                    Instantiate(wallType.singleRight, roomPosition, Quaternion.identity);
                break;
            case 2:
                if (newRoom.roomUp && newRoom.roomDown)
                    Instantiate(wallType.doubleUB, roomPosition, Quaternion.identity);
                if (newRoom.roomUp && newRoom.roomLeft)
                    Instantiate(wallType.doubleUL, roomPosition, Quaternion.identity);
                if (newRoom.roomUp && newRoom.roomRight)
                    Instantiate(wallType.doubleUR, roomPosition, Quaternion.identity);
                if (newRoom.roomDown && newRoom.roomLeft)
                    Instantiate(wallType.doubleBL, roomPosition, Quaternion.identity);
                if (newRoom.roomDown && newRoom.roomRight)
                    Instantiate(wallType.doubleBR, roomPosition, Quaternion.identity);
                if (newRoom.roomLeft && newRoom.roomRight)
                    Instantiate(wallType.doubleLR, roomPosition, Quaternion.identity);
                break;
            case 3:
                if (newRoom.roomUp && newRoom.roomDown && newRoom.roomLeft)
                    Instantiate(wallType.tripleUBL, roomPosition, Quaternion.identity);
                if (newRoom.roomUp && newRoom.roomDown && newRoom.roomRight)
                    Instantiate(wallType.tripleUBR, roomPosition, Quaternion.identity);
                if (newRoom.roomDown && newRoom.roomLeft && newRoom.roomRight)
                    Instantiate(wallType.tripleBLR, roomPosition, Quaternion.identity);
                if (newRoom.roomUp && newRoom.roomLeft && newRoom.roomRight)
                    Instantiate(wallType.tripleULR, roomPosition, Quaternion.identity);
                break;
            case 4:
                if (newRoom.roomUp && newRoom.roomLeft && newRoom.roomRight && newRoom.roomDown)
                    Instantiate(wallType.fourDoors, roomPosition, Quaternion.identity);
                break;
        }

这里的代码可能比较繁琐，但是是为了我们之后更好的使用，如果有新的素材可以直接替换预制体即可。
最后回到我们的Unity运行一下。

这样我们要的效果就出现了。

总结

这节我们主要实现了Wall的建立，下次我们会通过Unity的组件Tilemap瓦片功能来绘制我们的场景，并且对我们的Player进行创建。