Unity exploration plot access design analysis & process + code specific implementation

️ The foreword introduces ：

• For example, we have the following map （ Conceptual design drawings ） Need to explore

️ Game background ：

1. The main castle is located in the center on the far right of the map , The monster is generated from the left .
2. We dig plots to generate paths that affect strange paths , Resist the invasion of monsters by building towers .
3. The road that has been dug is the movement range of the little monster , Some plots that have not been excavated can be placed with the desired tower .
4. Some plots have the probability to get special rewards / Colored eggs , Different elements can be designed to interact with towers and different plots （ It's inconvenient to do specific development here , You can make up your own brain ）
5. Our goal is to successfully resist multiple waves of monster attacks , Successfully defend our main castle .

️ Description of specific functional modules ：

• A currently explored plot will have a logo , If this is a digeable plot , We click on the logo , There will be 2~3 A small triangle arrow , Click an arrow , If the plot pointed to is a digeable plot , It will become a passage .
• What we need to design is to realize such an idea or function , And expand it into a General interface for external calls .

️ Design thinking ：

• The starting point is not covered by parcels , It's a pathway , Use a small special effect picture as a logo , By clicking the arrow in any direction , You can turn the plot pointed by the arrow into a road .
• The process of this change is actually switching a picture , And hide the arrow of the previous parcel and show the arrow of the next parcel .
• Here's an important point , We Ensure that the generated path is continuous , For example, the texture of the previous one is vertical , The next one should be consistent with it , When encountering a detour , Also show the curved road , This requires two judgments , The first judgment should be consistent with the previous one , The second judgment should be consistent with the two before and after .

️ Realization effect ：

️ Implementation process ：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;

public class chufa : MonoBehaviour
{
    public GameObject Stick, changeStick;
    public GameObject btn1, btn2;
    public GameObject btn_stick1, btn_stick2;
    public Image sr;
    public Sprite[] pic;

    void Start () { 
        sr = GetComponent<Image>();
        Button btn = Stick.GetComponentInChildren<Button>();
        btn.onClick.AddListener (OnStartButtonClick);
    }

    public void OnStartButtonClick()
    {
        Debug.Log(" Ha ha ha ha ！ see , You seem to be a fool ！！");
        changeStick.GetComponent<Image>().sprite = pic[0];

        btn_stick1.SetActiveRecursively(false);
        btn_stick2.SetActiveRecursively(false);

        btn1.SetActiveRecursively(true);
        btn2.SetActiveRecursively(true);
    }

    public void TransRoad() 
    {
        //...
    }
}