Created
February 24, 2017 07:59
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Unity Editor Script to Generate Objects in a curve
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| using System.IO; | |
| using UnityEngine; | |
| using UnityEditor; | |
| using System.Collections.Generic; | |
| public class MakeCoinCurve : EditorWindow { | |
| private Vector3 m_startPos; | |
| private float m_forwardSpeed = 6f; | |
| private float m_upSpeed = 13.5f; | |
| private float m_gravity = 45f; | |
| private List<Vector3> m_curvePts = new List<Vector3>(); | |
| [MenuItem("GameEditor/make coin curve")] | |
| public static void ShowWindow() | |
| { | |
| EditorWindow.GetWindow(typeof(MakeCoinCurve)); | |
| } | |
| void OnGUI() | |
| { | |
| EditorGUILayout.BeginVertical(); | |
| m_startPos = EditorGUILayout.Vector3Field("start pos", m_startPos); | |
| m_forwardSpeed = EditorGUILayout.FloatField("forward speed: ", m_forwardSpeed); | |
| m_upSpeed = EditorGUILayout.FloatField("up speed: ", m_upSpeed); | |
| m_gravity = EditorGUILayout.FloatField("gravity: ", m_gravity); | |
| EditorGUILayout.Space(); | |
| if (GUILayout.Button("make selections curve", GUILayout.Height(20))) | |
| { | |
| makeCurvePts(); | |
| float totallength = totalLength(); | |
| makeCurveEqualLength(Selection.gameObjects, totallength); | |
| } | |
| if (GUILayout.Button("set Start Position", GUILayout.Height(20))) | |
| { | |
| setStartPos(Selection.gameObjects); | |
| } | |
| EditorGUILayout.EndVertical(); | |
| } | |
| void makeCurve(GameObject[] gameObjcects) | |
| { | |
| int count = gameObjcects.Length; | |
| if(m_gravity == 0) | |
| { | |
| Debug.LogError("gravity == 0"); | |
| return; | |
| } | |
| if(count < 2) | |
| return; | |
| float totalt = 2 * m_upSpeed/m_gravity; | |
| float t = 0; | |
| Vector3 pos = Vector3.zero; | |
| for (int i = 0; i < count; i++) | |
| { | |
| t = totalt * i/(count - 1); | |
| GameObject obj = gameObjcects[i]; | |
| pos.x = m_forwardSpeed * t; | |
| pos.y = m_upSpeed * t - m_gravity * t * t/2; | |
| pos.z = 0; | |
| obj.transform.localPosition = pos; | |
| } | |
| } | |
| void makeCurvePts() | |
| { | |
| m_curvePts.Clear(); | |
| float step = 0.01f; | |
| float totalt = 2 * m_upSpeed / m_gravity; | |
| int count = Mathf.CeilToInt( totalt / step); | |
| float t = 0; | |
| Vector3 pos = Vector3.zero; | |
| for (int i = 0; i < count; i++) | |
| { | |
| t = totalt * i / (count - 1); | |
| pos.x = m_forwardSpeed * t; | |
| pos.y = m_upSpeed * t - m_gravity * t * t / 2; | |
| pos.z = 0; | |
| m_curvePts.Add(pos); | |
| } | |
| } | |
| float totalLength() | |
| { | |
| float length = 0f; | |
| for (int i = 1; i < m_curvePts.Count; i++) | |
| { | |
| Vector3 seg = m_curvePts[i] - m_curvePts[i - 1]; | |
| length += seg.magnitude; | |
| } | |
| return length; | |
| } | |
| void makeCurveEqualLength (GameObject[] gameObjcects, float totalLength) | |
| { | |
| int count = gameObjcects.Length; | |
| if (m_gravity == 0) | |
| { | |
| Debug.LogError("gravity == 0"); | |
| return; | |
| } | |
| if (count < 2) | |
| return; | |
| float averageLen = totalLength / (count-1); | |
| GameObject obj = gameObjcects[0]; | |
| obj.transform.localPosition = Vector3.zero; | |
| int j = 1; | |
| float length = 0f; | |
| for (int i = 1; i < m_curvePts.Count; i++) | |
| { | |
| Vector3 seg = m_curvePts[i] - m_curvePts[i - 1]; | |
| length += seg.magnitude; | |
| if (length > averageLen) | |
| { | |
| obj = gameObjcects[j]; | |
| obj.transform.localPosition = m_curvePts[i]; | |
| j++; | |
| length = 0; | |
| if(j == gameObjcects.Length -1) | |
| { | |
| obj = gameObjcects[j]; | |
| obj.transform.localPosition = m_curvePts[m_curvePts.Count - 1]; | |
| } | |
| } | |
| } | |
| for (int i = 0; i < gameObjcects.Length; i++) | |
| { | |
| obj = gameObjcects[i]; | |
| obj.transform.localPosition = obj.transform.localPosition + m_startPos; | |
| } | |
| } | |
| void setStartPos(GameObject[] gameObjcects) | |
| { | |
| int count = gameObjcects.Length; | |
| Vector3 minXPos = Vector3.zero; | |
| if (count > 0) | |
| minXPos = gameObjcects[0].transform.localPosition; | |
| for (int i = 0; i < count; i++) | |
| { | |
| GameObject obj = gameObjcects[i]; | |
| if (obj.transform.localPosition.x < minXPos.x) | |
| minXPos = gameObjcects[i].transform.localPosition; | |
| } | |
| m_startPos = minXPos; | |
| } | |
| } |
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