// Gets last magnetized object in the chain and demagnetizes each object until it reaches this magnetizable
public void DeMagnetize()
{
if (rigidBody == null) // Sometimes tries to demagnetize objects undergoing Destroy
{
return;
}
if (magnetData.magnetizedList.Count == 0)
{
return;
}
Magnetizable _last = magnetData.magnetizedList.GetLast();
while (_last != this)
{
_last.rigidBody.velocity = Vector2.zero;
_last.magnetActive = false;
magnetData.RemoveMagnetizable(_last);
_last.magnetizedTo = null;
_last.nextMagnet = null;
if (magnetData.magnetizedList.Count == 0)
{
break;
}
_last = magnetData.magnetizedList.GetLast();
}
rigidBody.velocity = Vector2.zero;
magnetActive = false;
magnetData.RemoveMagnetizable(this);
if (magnetizedTo != null)
{
magnetizedTo.nextMagnet = null;
}
magnetizedTo = null;
nextMagnet = null;
}
void HandleMagnets()
{
// If no magnet is attached to the ship, simply look for nearby magnets and magnetize those in range
if (headMagnetizable.nextMagnet == null)
{
List <Magnetizable> _nonMagnetizedList = new List <Magnetizable>(magnetData.nonMagnetizedList);
foreach (Magnetizable magnet in _nonMagnetizedList)
{
if (magnet == null)
{
// Remove unnecessary magnet from lists
magnetData.DestroyMagnetizable(magnet);
continue;
}
// Snap on nearest magnet to head if in range
float _distance = (headMagnetizable.transform.position - (magnet.transform.position)).magnitude;
if (_distance < snapOnRange)
{
if (magnet.magnetActive)
{
magnet.Magnetize(headMagnetizable);
break;
}
}
else if (_distance < snapOnRange + 3) // Detach magnet if not in range
{
if (!magnet.magnetActive)
{
magnet.magnetActive = true;
}
}
}
}
// Look for nearest magnet and attach to last magnet in the chain
if (magnetData.magnetizedList.Count > 0)
{
List <Magnetizable> _nonMagnetizedList = new List <Magnetizable>(magnetData.nonMagnetizedList);
foreach (Magnetizable m in _nonMagnetizedList)
{
// Demagnetize magnets that are no longer chained to the ship
Magnetizable _mag = magnetData.magnetizedList.GetLast();
while (_mag.magnetizedTo == null && magnetData.magnetizedList.Count > 0)
{
magnetData.RemoveMagnetizable(_mag);
_mag = magnetData.magnetizedList.GetLast();
}
if (m == null)
{
magnetData.DestroyMagnetizable(m);
continue;
}
else if (m.magnetizedTo != null || m.nextMagnet != null)
{
m.magnetizedTo = null;
m.nextMagnet = null;
}
// Snap first nearby magnet to the end of the chain
float _distance = (_mag.transform.position - m.transform.position).magnitude;
if (_distance < snapOnRange)
{
if (m.magnetActive)
{
m.Magnetize(_mag);
}
}
else if (_distance > snapOnRange + 3)
{
if (!m.magnetActive)
{
m.magnetActive = true;
}
}
}
// Move every magnetized magnet towards target magnet in chain
List <Magnetizable> _magnetizedList = new List <Magnetizable>(magnetData.magnetizedList);
foreach (Magnetizable m in _magnetizedList)
{
if (m.magnetizedTo == null)
{
m.DeMagnetize();
continue;
}
float _distance = (m.magnetizedTo.transform.position - m.transform.position).magnitude;
if (_distance < snapOnRange + 1)
{
if (m.magnetActive)
{
// Allows for elastic movement between magnets. Increasing speed increases distance between magnets
#region ElasticRopeMethod
if (elasticMagnets)
{
Vector3 moveVector = (m.magnetizedTo.posMag.position - m.negMag.position) * magnetData.magnetForceScalar;
m.rigidBody.AddForce(moveVector);
}
#endregion
// Allows for chain-like movement between magnets (Default), such as whip-like movement and dangling down.
#region AbsoluteMovementMethod
if (chainMagnets)
{
m.transform.parent.position = m.transform.parent.position + (m.magnetizedTo.posMag.position - m.negMag.position) / 3;
m.rigidBody.AddForce(Vector2.down * m.rigidBody.drag * m.rigidBody.mass - m.rigidBody.gravityScale * Vector2.down);
}
#endregion
// Rotate towards target magnet
Vector3 rotateVector = (m.magnetizedTo.transform.position - m.negMag.position).normalized;
if (rotateVector.y >= 0)
{
m.transform.parent.rotation = Quaternion.Euler(new Vector3(0, 0, Mathf.Acos(rotateVector.x) * (180 / Mathf.PI) - 90));
}
else
{
m.transform.parent.rotation = Quaternion.Euler(new Vector3(0, 0, -Mathf.Acos(rotateVector.x) * (180 / Mathf.PI) - 90));
}
}
}
else if (_distance > snapOnRange + 3) // Detach if too far away from target magnet
{
if (!m.magnetActive)
{
m.magnetActive = true;
}
}
}
}
}