54 lines
1.5 KiB
C#
54 lines
1.5 KiB
C#
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.U2D;
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public class Sprinkler : MonoBehaviour
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{
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public GameObject m_Prefab;
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public float m_RandomFactor = 10.0f;
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public bool m_UseNormals = false;
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float Angle(Vector3 a, Vector3 b)
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{
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float dot = Vector3.Dot(a, b);
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float det = (a.x * b.y) - (b.x * a.y);
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return Mathf.Atan2(det, dot) * Mathf.Rad2Deg;
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}
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// Use this for initialization. Plant the Prefabs on Startup
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void Start ()
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{
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SpriteShapeController ssc = GetComponent<SpriteShapeController>();
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Spline spl = ssc.spline;
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for (int i = 1; i < spl.GetPointCount() - 1; ++i)
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{
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if (Random.Range(0, 100) > (100 - m_RandomFactor) )
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{
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var go = GameObject.Instantiate(m_Prefab);
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go.transform.position = spl.GetPosition(i);
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if (m_UseNormals)
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{
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Vector3 lt = Vector3.Normalize(spl.GetPosition(i - 1) - spl.GetPosition(i));
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Vector3 rt = Vector3.Normalize(spl.GetPosition(i + 1) - spl.GetPosition(i));
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float a = Angle(Vector3.up, lt);
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float b = Angle(lt, rt);
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float c = a + (b * 0.5f);
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if (b > 0)
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c = (180 + c);
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go.transform.rotation = Quaternion.Euler(0, 0, c);
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}
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}
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}
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}
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// Update is called once per frame
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void Update ()
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{
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}
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}
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