private void CreateCollider(ScrewColliderGenerator screwColliderGenerator, float size, float radius, float angle, float currentWind, Transform parent)
{
GameObject colliderObject = new GameObject("Collider", typeof(BoxCollider));
BoxCollider collider = colliderObject.GetComponent <BoxCollider>();
collider.size = Vector3.one * size;
collider.material = screwColliderGenerator.physicMaterial;
float windHeight = 1.41421356237f * size;
// sqrt(2) = 1.41421356237
float height = windHeight * currentWind;
Transform colliderTransform = colliderObject.transform;
colliderTransform.SetParent(parent, false);
Quaternion angleAroundScrew = Quaternion.AngleAxis(angle, Vector3.up);
colliderTransform.localRotation =
angleAroundScrew *
// The higher the resolution, the less steep the cube collider pitches in the z axis
Quaternion.AngleAxis((screwColliderGenerator.invertWindDirection ? -1 : 1) * -Mathf.Atan(windHeight / (2 * Mathf.PI * radius)) * Mathf.Rad2Deg, Vector3.forward) *
Quaternion.AngleAxis(45, Vector3.right);
colliderTransform.localPosition = height * Vector3.up
+ angleAroundScrew * (Vector3.forward * radius);
}
public override void OnInspectorGUI()
{
ScrewColliderGenerator screwColliderGenerator = target as ScrewColliderGenerator;
EditorGUI.BeginChangeCheck();
screwColliderGenerator.size = Mathf.Max(.0001f, EditorGUILayout.FloatField("Size", screwColliderGenerator.size));
screwColliderGenerator.winds = Mathf.Max(.5f, EditorGUILayout.FloatField("Winds", screwColliderGenerator.winds));
screwColliderGenerator.windResolution = Mathf.Max(1, EditorGUILayout.IntField("Wind Resolution", screwColliderGenerator.windResolution));
screwColliderGenerator.windStartOffset = EditorGUILayout.FloatField("Wind Start Offset", screwColliderGenerator.windStartOffset);
screwColliderGenerator.invertWindDirection = EditorGUILayout.Toggle("Invert Wind Direction", screwColliderGenerator.invertWindDirection);
screwColliderGenerator.radiusCurve = EditorGUILayout.CurveField("Radius", screwColliderGenerator.radiusCurve);
screwColliderGenerator.physicMaterial = EditorGUILayout.ObjectField(screwColliderGenerator.physicMaterial, typeof(PhysicMaterial), false) as PhysicMaterial;
if (GUILayout.Button("Clear Children"))
{
ClearChildren(screwColliderGenerator);
}
if (GUILayout.Button("Generate Colliders"))
{
GenerateColliders(screwColliderGenerator);
}
if (EditorGUI.EndChangeCheck())
{
GenerateColliders(screwColliderGenerator);
}
}
private void ClearChildren(ScrewColliderGenerator screwColliderGenerator)
{
List <GameObject> children = new List <GameObject>();
foreach (Transform child in screwColliderGenerator.transform)
{
children.Add(child.gameObject);
}
foreach (GameObject child in children)
{
DestroyImmediate(child);
}
}
private void GenerateColliders(ScrewColliderGenerator screwColliderGenerator)
{
ClearChildren(screwColliderGenerator);
int totalColliders = Mathf.FloorToInt(screwColliderGenerator.windResolution * screwColliderGenerator.winds);
for (float i = 0; i < totalColliders; i++)
{
float progress = i / (totalColliders - 1);
float angle = (screwColliderGenerator.invertWindDirection ? -1 : 1) * (-360 * (progress * screwColliderGenerator.winds + screwColliderGenerator.windStartOffset));
float radius = screwColliderGenerator.radiusCurve.Evaluate(progress) / 1000f;
CreateCollider(screwColliderGenerator, screwColliderGenerator.size, radius, angle, progress * screwColliderGenerator.winds, screwColliderGenerator.transform);
}
}
