///<summary>Breaks the object across a line and flings its pieces away from the center at the given force. Set spawn to false to prevent the pieces from spawning</summary>
private object[] Break(Mesh mesh, float force, Vector2 from, Vector2 to, bool spawn = true)
{
from = RelativePoint(from);
to = RelativePoint(to);
Vector3[] breakPoints = GetBreakPoints(mesh, from, to), weakSide, strongSide;
GetSides(mesh, from, to, out weakSide, out strongSide);
MeshAt weakFracture = CreateFractureMesh(weakSide, breakPoints);
MeshAt strongFracture = CreateFractureMesh(strongSide, breakPoints);
List <object> fractures = new List <object>();
if (spawn)
{
fractures.Add(CreateFractureObject(weakFracture, gameObject));
fractures.Add(CreateFractureObject(strongFracture, gameObject));
}
else
{
fractures.Add(weakFracture);
fractures.Add(strongFracture);
}
fractures.RemoveAll(obj => obj == null);
if (spawn)
{
BlastApart(fractures.ConvertAll(f => (GameObject)f).ToArray(), force);
}
return(fractures.ToArray());
}
///<summary>
///Creates a new fracture from the mesh and it's center based on this object, then returns it.
///Returns null if the mesh is null or if the area is too small
///Additionally corrects mass relative to area based on the original if provided
///</summary>
GameObject CreateFractureObject(MeshAt meshAt, GameObject original = null)
{
if (meshAt != null)
{
float area = GetArea(meshAt.mesh);
if (area < minFractureArea)
{
return(null);
}
GameObject fractureObject = Instantiate(gameObject, transform.position + meshAt.center, original == null ? transform.rotation : Quaternion.identity);
fractureObject.GetComponent <MeshFilter>().mesh = meshAt.mesh;
fractureObject.name = gameObject.name;
fractureObject.GetComponent <BreakableObject>().FormatBreakable();
if (original != null)
{
float originalMass = original.GetComponent <Rigidbody2D>().mass;
float originalArea = GetArea(original.GetComponent <MeshFilter>().mesh);
fractureObject.GetComponent <Rigidbody2D>().mass = area / originalArea * originalMass;
fractureObject.GetComponent <Rigidbody2D>().velocity = original.GetComponent <Rigidbody2D>().velocity;
fractureObject.GetComponent <Rigidbody2D>().angularVelocity = original.GetComponent <Rigidbody2D>().angularVelocity;
fractureObject.GetComponent <BreakableObject>().maxHealth = fractureObject.GetComponent <BreakableObject>().health = area / originalArea * maxHealth;
fractureObject.transform.parent = original.transform.parent;
fractureObject.transform.RotateAround(original.transform.localPosition, Vector3.forward, original.transform.eulerAngles.z);
}
return(fractureObject);
}
return(null);
}