等距网格中钳位作用距离

Question

我目前正在制作一款2D等距游戏，玩家将能够控制不同的单位，并通过它们进行互动。

我创建了一个名为UnitType的Scriptable Object。多亏了这个系统，我可以定义行动范围和移动范围，这是玩家可以移动或与之互动的最大单元格距离。

问题是我不知道如何通过代码实现这一点。这就是我想要实现的，使用2个单元格的动作范围进行演示。这就是目标

与我的一个朋友，我们考虑计算这4条线的线性方程，以检查光线投射命中是否在它们之内，但它不能正常工作与负x。这是当前系统

最好的做法是什么?

非常感谢您的时间和关注，

Answer 1

Mousehit是一个Unity GameObject，是角色的子对象。它的位置被绑定到平铺图单元格的中心，这要归功于附加到GameManager上的一个脚本mousePosition。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Tilemaps;
public class Interact : MonoBehaviour
{
[SerializeField] private Sprite upperLeft, upperRight, midLeft, midRight, bottomLeft, bottomMid, bottomRight;
[SerializeField] private GameObject mouseHit;
public UnitType unitType;
private GameObject gameManager;
private CheckMousePosition mousePosition;
private bool isInteracting, isAtGoodDistance;
private SpriteRenderer spriteRenderer;
private Tilemap tilemap;
private RaycastHit2D hit;
//private Transform mouseHit;
void Start()
{
tilemap = GameObject.Find("Tilemap").GetComponent<Tilemap>();
gameManager = GameObject.FindGameObjectWithTag("GameManager");
mousePosition = gameManager.GetComponent<CheckMousePosition>();
spriteRenderer = gameObject.GetComponent<SpriteRenderer>();
isInteracting = false;
mouseHit.SetActive(false);
}
// Update is called once per frame
void Update()
{
if (isInteracting)
{
mouseHit.SetActive(true);
mouseHit.transform.position = new Vector3(mousePosition.tilemap.GetCellCenterLocal(mousePosition.cellPosition).x, mousePosition.tilemap.GetCellCenterLocal(mousePosition.cellPosition).y, 1);

if (Input.GetMouseButtonDown(0))
{
Interaction();
}
}
if (isInteracting == false)
{
spriteRenderer.sprite = null;
mouseHit.SetActive(false);
}
}
public void InitInteraction()
{
isInteracting = true;
transform.root.GetComponent<ContextualMenu>().CloseContextualMenu();
}
private void Interaction()
{
//When the player interacts, we cast a ray that will determine what he is interacting with.
hit = Physics2D.Raycast(Camera.main.ScreenToWorldPoint(Input.mousePosition), Vector2.zero);
if (hit.collider != null)
{
if (isInteracting)
{
isInteracting = false; //the player is no longer interacting.
//If the player is interacting with a farmable cell using the worker.
if (transform.root.name == "Worker"
&& hit.collider.GetComponent<FarmableCell>() != null)
{
CheckInteractionDistance();
//hit.collider.GetComponent<FarmableCell>().CheckIfFarmed();
}
}
}
}
private void CheckInteractionDistance()
{
if (mouseHit.transform.localPosition.y <= (-0.5 * (mouseHit.transform.localPosition.x) + unitType.actionDistance / 2)
&& mouseHit.transform.localPosition.x >= (-0.5 * (mouseHit.transform.localPosition.x) - unitType.actionDistance / 2)
&& mouseHit.transform.localPosition.x >= (0.5 * (mouseHit.transform.localPosition.x) - unitType.actionDistance / 2)
&& mouseHit.transform.localPosition.x <= (0.5 * (mouseHit.transform.localPosition.x) + unitType.actionDistance / 2))
{
Debug.Log("ok");
}
else
{
Debug.Log("not ok");
}
}
}