unity独立游戏开发日记2018/09/27

今天优化了下昨天的代码，并且添加了树木和其他资源的生成。还修复了接近石头后，挖掘图标不出现的bug。目前可以在unity中稳定60-70fps。

详看文章：https://www.cnblogs.com/lixiaoyao123/p/9710601.html

更新后的代码：（还是比较乱 没整理也没写注释，最后一块说明）

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class StartMap : MonoBehaviour {
    private GameObject Bridge;
    private GameObject Cliff;
    private GameObject Dirt;
    private GameObject Grass1;
    private GameObject Grass2;
    private GameObject Rock;
    private GameObject Sand;
    private GameObject Tree;
    private GameObject Grass01;
    private GameObject Grass02;
    private GameObject Props_Rock;
    private Vector3 location;
    private float xpos, ypos, zpos;
    private int randnum;
    private GameObject selectedobject;
    private GameObject selectOther;
    private bool iscompeleted = false;

    public GameObject envfather;
    // Use this for initialization

    private void Start()
    {
         Time.timeScale = ;
         createmap();

    }

    private void Update()
    {
       if(iscompeleted)
        {
            DeletePrefab();
            Time.timeScale = ;
            Destroy(this.gameObject);
        }

    }
    void DeletePrefab()
    {
        Bridge.transform.position = new Vector3(, -, );
        Cliff.transform.position = new Vector3(, -, );
        Dirt.transform.position = new Vector3(, -, );
        Grass1.transform.position = new Vector3(, -, );
        Grass2.transform.position = new Vector3(, -, );
        Rock.transform.position = new Vector3(, -, );
        Sand.transform.position = new Vector3(, -, );
        Grass01.transform.position = new Vector3(, -, );
        Grass02.transform.position = new Vector3(, -, );
        Tree.transform.position = new Vector3(, -, );
    }

    void RenewPrefab()
    {
        Bridge = (GameObject)Instantiate(Resources.Load("Prefabs/Bridge"));
        Cliff = (GameObject)Instantiate(Resources.Load("Prefabs/Cliff"));
        Dirt = (GameObject)Instantiate(Resources.Load("Prefabs/Dirt"));
        Grass1 = (GameObject)Instantiate(Resources.Load("Prefabs/Grass1"));
        Grass2 = (GameObject)Instantiate(Resources.Load("Prefabs/Grass2"));
        Rock = (GameObject)Instantiate(Resources.Load("Prefabs/Rock"));
        Sand = (GameObject)Instantiate(Resources.Load("Prefabs/Sand"));
        Tree = (GameObject)Instantiate(Resources.Load("Prefabs/Tree_01"));
        Grass01 = (GameObject)Instantiate(Resources.Load("Prefabs/Grass_01"));
        Grass02 = (GameObject)Instantiate(Resources.Load("Prefabs/Grass_02"));
        Props_Rock = (GameObject)Instantiate(Resources.Load("Prefabs/Props_Rock"));
        DeletePrefab();
    }

    void createmap()
    {
        for (xpos = -; xpos <= ; xpos++)
        {
            for(zpos = -; zpos <= ; zpos++)
            {
                RenewPrefab();
                randnum = Random.Range(, );
                SelectPrefab(randnum);
                selectedobject.transform.position = new Vector3(xpos, ypos, zpos);
                selectedobject.transform.parent = envfather.transform;
                CreateOthers(selectedobject);
                if(xpos ==  && zpos == )
                {
                    DeletePrefab();
                    iscompeleted = true;
                    break;
                }
            }
        }

    }

    private void SelectPrefab( int rand)
    {

         if ( <= rand & rand < )
        {
            selectedobject = Cliff;
        }
        else if( <= rand & rand < )
        {
            selectedobject = Dirt;
        }
        else if ( <= rand & rand < )
        {
            selectedobject = Grass1;
        }
        else if ( <= rand & rand < )
        {
            selectedobject = Grass2;
        }
        else if ( <= rand & rand < )
        {
            selectedobject = Rock;
        }
        else
        {
            selectedobject = Sand;
        }

    }

    void CreateOthers(GameObject selectObject)
    {
        int i = Random.Range(, );
        if(selectObject==Grass1)
        {
            if (i > )
            {
                selectOther = Tree;
                selectOther.transform.position = selectObject.transform.position;
                if (i >  && i <=)
                {
                    selectOther.transform.eulerAngles = new Vector3(, , );
                }
                else if (i > && i <= )
                {
                    selectOther.transform.eulerAngles = new Vector3(, , );
                }
                else if (i >  && i <= )
                {
                    selectOther.transform.eulerAngles = new Vector3(, , );
                }
                else if (i >  && i <= )
                {
                    selectOther.transform.eulerAngles = new Vector3(, -, );
                }
                selectOther.transform.parent = selectObject.transform;
            }

        }
        else if(selectObject == Grass2)
        {
            if (<i&&i<)
            {
                selectOther = Grass01;
                selectOther.transform.position = selectObject.transform.position;
                selectOther.transform.parent = selectObject.transform;
            }
            else if(i>=&&i<)
            {
                selectOther = Grass02;
                selectOther.transform.position = selectObject.transform.position;
                selectOther.transform.parent = selectObject.transform;
            }
        }
        else if(selectObject == Dirt)
        {
            if(i>)
            {
                selectOther = Grass02;
                selectOther.transform.position = selectObject.transform.position;
                selectOther.transform.parent = selectObject.transform;
            }
        }
        else if(selectObject == Rock)
        {
            if (i >=)
            {
                selectOther = Props_Rock;
                selectOther.transform.position = selectObject.transform.position;
                if (i >&&i<)
                {
                    selectOther.transform.eulerAngles = new Vector3(, , );
                }
                else if (i >= && i < )
                {
                    selectOther.transform.eulerAngles = new Vector3(, , );
                }
                else if (i >= && i < )
                {
                    selectOther.transform.eulerAngles = new Vector3(, , );
                }
                else if (i >=  && i < )
                {
                    selectOther.transform.eulerAngles = new Vector3(, -, );
                }
                selectOther.transform.parent = selectObject.transform;
            }

        }
        else if (selectObject == Cliff)
        {
            if (i >=)
            {
                selectOther = Props_Rock;
                selectOther.transform.position = selectObject.transform.position;
                if (i >&&i<)
                {
                    selectOther.transform.eulerAngles = new Vector3(, , );
                }
                else if(i >=)
                {
                    selectOther.transform.eulerAngles = new Vector3(, , );
                }
                selectOther.transform.parent = selectObject.transform;
            }

        }

    }

}

其中在selectedobjet创建之后，用createothers函数判断当前的cube类型，在相应的位置上生成相应的资源，比如石头，草，树木。其中资源的类型和旋转再用随机数进行随机产生。

另外，优化方面，在建立世界后删除这个脚本，并且删除前，把缓存预先生成的物体destroy掉。

至于ui挖掘图片的显示，是因为之前把canvas给误删了，再加上之后，把摄像头选为world space就能正常显示了。

目前的效果：

目前大概就这样。优化方面体会很多，首先是代码逻辑要简化，还要注意update中，尽量不要设计太复杂的算法。能预先载入的，能异步执行的尽量做，节省cpu和gpu。

至于渲染方面，shader编程还没涉及到，很深的学问。。。

随即世界的生成完成了大概20%预期，接下来要做更复杂的。今天就这样。