void Awake()
{
// Get wave properties from water
steepness = water.GetWaveSteepness();
wavelength = water.GetWaveLength();
speed = water.GetWaveSpeed();
directions = water.GetWaveDirections();
// Get rigidbody
rb = GetComponent <Rigidbody>();
rb.useGravity = false;
effectorProjections = new Vector3[effectors.Length];
for (int i = 0; i < effectors.Length; i++)
{
effectorProjections[i] = effectors[i].position;
}
}
void FixedUpdate()
{
int effectorAmount = effectors.Length;
for (int i = 0; i < effectorAmount; i++)
{
Vector3 effectorPosition = effectors[i].position;
effectorProjections[i] = effectorPosition;
effectorProjections[i].y = water.transform.position.y + GerstnerWaveDisplacement.GetWaveDisplacement(effectorPosition, water.GetWaveSteepness(), water.GetWaveLength(), water.GetWaveSpeed(), water.GetWaveDirections()).y;
// gravity
rb.AddForceAtPosition(m_Gravity / effectorAmount, effectorPosition, ForceMode.Acceleration);
float waveHeight = effectorProjections[i].y;
float effectorHeight = effectorPosition.y;
if (effectorHeight < waveHeight) // submerged
{
float submersion = Mathf.Clamp01(waveHeight - effectorHeight) / objectDepth;
float buoyancy = Mathf.Abs(m_Gravity.y) * submersion * strength;
// buoyancy
rb.AddForceAtPosition(Vector3.up * buoyancy, effectorPosition, ForceMode.Acceleration);
// drag
rb.AddForce(-rb.velocity * velocityDrag * Time.fixedDeltaTime, ForceMode.VelocityChange);
// torque
rb.AddTorque(-rb.angularVelocity * angularDrag * Time.fixedDeltaTime, ForceMode.Impulse);
}
}
}
