我正在 Unity 中為我的 A 級(jí)計(jì)算機(jī)科學(xué)項(xiàng)目創(chuàng)建一個(gè)基本模擬器。目前，用戶可以通過(guò)選擇相關(guān)工具并單擊并拖動(dòng)來(lái)確定框的兩個(gè)相對(duì)角，從而確定其尺寸來(lái)繪制框（板條箱）對(duì)象。該盒子由一個(gè)單獨(dú)的預(yù)制件組成，該預(yù)制件被實(shí)例化并相應(yīng)地改變其大小。它的代碼如下：void Start () { boxAnim = boxButton.GetComponent<Animator>();}// Update is called once per framevoid Update(){ //sets the mouseDown and mouseHeld bools and the mouse position Vector3 mouseDown = Input.GetMouseButtonDown(0); mouseHeld = Input.GetMouseButton(0); mousePosition = Input.mousePosition; //checks if the user has started to draw if (mouseDown && !draw) { draw = true; originalMousePosition = mousePosition; } //checking if the user has released the mouse if (draw && !mouseHeld) { finalMousePosition = mousePosition; draw = false; if (boxAnim.GetBool("Pressed") == true) //if the box draw button is pressed { boxDraw(originalMousePosition, finalMousePosition); //draws crate } }}以類似的方式，我希望能夠創(chuàng)建一個(gè)“斜坡”對(duì)象，以便用戶可以單擊并拖動(dòng)以確定基本寬度，然后再次單擊以確定仰角/高度，（斜坡將始終是一個(gè)直角三角形。）問(wèn)題在于我希望將斜坡作為我創(chuàng)建的精靈，而不僅僅是基本的塊顏色。然而，單個(gè)精靈只有一個(gè)仰角，并且沒(méi)有變換能夠改變這一點(diǎn)（據(jù)我所知。）顯然我不想為每個(gè)角度創(chuàng)建不同的精靈，所以有什么我可以做的嗎？我想的解決方案是，是否有某種功能可以改變代碼中矢量圖像的節(jié)點(diǎn)，但我很確定這不存在。
2 回答
慕絲7291255
TA貢獻(xiàn)1859條經(jīng)驗(yàn) 獲得超6個(gè)贊
我有一個(gè)使用網(wǎng)格和多邊形碰撞器來(lái)解決部分問(wèn)題的方法。我現(xiàn)在有一個(gè)函數(shù)可以創(chuàng)建一個(gè)具有給定寬度和高度的直角三角形以及一個(gè)三角形形狀的碰撞器：
using UnityEngine;
using System.Collections;
public class createMesh : MonoBehaviour {
public float width = 5f;
public float height = 5f;
public PolygonCollider2D polyCollider;
void Start()
{
polyCollider = GetComponent<PolygonCollider2D>();
}
// Update is called once per frame
void Update () {
TriangleMesh(width, height);
}
void TriangleMesh(float width, float height)
{
MeshFilter mf = GetComponent<MeshFilter>();
Mesh mesh = new Mesh();
mf.mesh = mesh;
//Verticies
Vector3[] verticies = new Vector3[3]
{
new Vector3(0,0,0), new Vector3(width, 0, 0), new Vector3(0,
height, 0)
};
//Triangles
int[] tri = new int[3];
tri[0] = 0;
tri[1] = 2;
tri[2] = 1;
//normals
Vector3[] normals = new Vector3[3];
normals[0] = -Vector3.forward;
normals[1] = -Vector3.forward;
normals[2] = -Vector3.forward;
//UVs
Vector2[] uv = new Vector2[3];
uv[0] = new Vector2(0, 0);
uv[0] = new Vector2(1, 0);
uv[0] = new Vector2(0, 1);
//initialise
mesh.vertices = verticies;
mesh.triangles = tri;
mesh.normals = normals;
mesh.uv = uv;
//setting up collider
polyCollider.pathCount = 1;
Vector2[] path = new Vector2[3]
{
new Vector2(0,0), new Vector2(0, height), new Vector2(width, 0)
};
polyCollider.SetPath(0, path);
}
}
我只需要將此函數(shù)放入與我繪制框的代碼非常相似的代碼中，以便用戶可以指定寬度和高度。
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