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 = 0;
         createmap();
        
    }

    private void Update()
    {
       if(iscompeleted)
        {
            DeletePrefab();
            Time.timeScale = 1;
            Destroy(this.gameObject);
        }

    }
    void DeletePrefab()
    {
        Bridge.transform.position = new Vector3(0, -1000, 0);
        Cliff.transform.position = new Vector3(0, -1000, 0);
        Dirt.transform.position = new Vector3(0, -1000, 0);
        Grass1.transform.position = new Vector3(0, -1000, 0);
        Grass2.transform.position = new Vector3(0, -1000, 0);
        Rock.transform.position = new Vector3(0, -1000, 0);
        Sand.transform.position = new Vector3(0, -1000, 0);
        Grass01.transform.position = new Vector3(0, -1000, 0);
        Grass02.transform.position = new Vector3(0, -1000, 0);
        Tree.transform.position = new Vector3(0, -1000, 0);
    }


    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 = -25; xpos <= 25; xpos++)
        {
            for(zpos = -130; zpos <= 0; zpos++)
            {
                RenewPrefab();
                randnum = Random.Range(0, 100);
                SelectPrefab(randnum);
                selectedobject.transform.position = new Vector3(xpos, ypos, zpos);
                selectedobject.transform.parent = envfather.transform;
                CreateOthers(selectedobject);
                if(xpos == 25 && zpos == 0)
                {
                    DeletePrefab();
                    iscompeleted = true;
                    break;
                }
            }
        }

    }


    private void SelectPrefab( int rand)
    {
 
         if (0 <= rand & rand < 20)
        {
            selectedobject = Cliff;
        }
        else if(20 <= rand & rand < 40)
        {
            selectedobject = Dirt;
        }
        else if (40 <= rand & rand < 60)
        {
            selectedobject = Grass1;
        }
        else if (60 <= rand & rand < 80)
        {
            selectedobject = Grass2;
        }
        else if (80 <= rand & rand < 90)
        {
            selectedobject = Rock;
        }
        else
        {
            selectedobject = Sand;
        }


    }

    void CreateOthers(GameObject selectObject)
    {
        int i = Random.Range(1, 10);
        if(selectObject==Grass1)
        {
            if (i > 5)
            {
                selectOther = Tree;
                selectOther.transform.position = selectObject.transform.position;
                if (i > 5 && i <=6)
                {
                    selectOther.transform.eulerAngles = new Vector3(0, 90, 0);
                }
                else if (i >6 && i <= 7)
                {
                    selectOther.transform.eulerAngles = new Vector3(0, 180, 0);
                }
                else if (i > 7 && i <= 8)
                {
                    selectOther.transform.eulerAngles = new Vector3(0, 270, 0);
                }
                else if (i > 8 && i <= 10)
                {
                    selectOther.transform.eulerAngles = new Vector3(0, -90, 0);
                }
                selectOther.transform.parent = selectObject.transform;
            }

        }
        else if(selectObject == Grass2)
        {
            if (5<i&&i<7)
            {
                selectOther = Grass01;
                selectOther.transform.position = selectObject.transform.position;
                selectOther.transform.parent = selectObject.transform;
            }
            else if(i>=7&&i<10)
            {
                selectOther = Grass02;
                selectOther.transform.position = selectObject.transform.position;
                selectOther.transform.parent = selectObject.transform;
            }
        }
        else if(selectObject == Dirt)
        {
            if(i>6)
            {
                selectOther = Grass02;
                selectOther.transform.position = selectObject.transform.position;
                selectOther.transform.parent = selectObject.transform;
            }
        }
        else if(selectObject == Rock)
        {
            if (i >=4)
            {
                selectOther = Props_Rock;
                selectOther.transform.position = selectObject.transform.position;
                if (i >4&&i<6)
                {
                    selectOther.transform.eulerAngles = new Vector3(0, 90, 0);
                }
                else if (i >= 6&& i < 7)
                {
                    selectOther.transform.eulerAngles = new Vector3(0, 180, 0);
                }
                else if (i >=7 && i < 8)
                {
                    selectOther.transform.eulerAngles = new Vector3(0, 270, 0);
                }
                else if (i >= 8 && i < 10)
                {
                    selectOther.transform.eulerAngles = new Vector3(0, -90, 0);
                }
                selectOther.transform.parent = selectObject.transform;
            }


        }
        else if (selectObject == Cliff)
        {
            if (i >=7)
            {
                selectOther = Props_Rock;
                selectOther.transform.position = selectObject.transform.position;
                if (i >8&&i<9)
                {
                    selectOther.transform.eulerAngles = new Vector3(0, 90, 0);
                }
                else if(i >=9)
                {
                    selectOther.transform.eulerAngles = new Vector3(0, 180, 0);
                }
                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。