void AddUnderWaterForces()
{
float Cf = BoatPhysicsMath.ResistanceCoefficient(
water,
boat.velocity.magnitude,
modifyBoatMesh.CalculateUnderWaterLength());
List <SlammingForceData> slammingForceData = modifyBoatMesh.slammingForceData;
CalculateSlammingVelocities(slammingForceData);
float boatArea = modifyBoatMesh.boatArea;
float boatMass = VisbyData.mass;
List <int> indexOfOriginalTriangle = modifyBoatMesh.indexOfOriginalTriangle;
for (int i = 0; i < underWaterTriangleData.Count; i++)
{
TriangleData triangleData = underWaterTriangleData[i];
vector3 forceToAdd = Vector3.zero;
forceToAdd += BoatPhysicsMath.BuoyancyForce(water, triangleData);
forceToAdd += BoatPhysicsMath.ViscousWaterResistanceForce(water, triangleData, Cf);
forceToAdd += BoatPhysicsMath.PressureDragForce(triangleData);
int originalTriangleIndex = indexOfOriginalTriangle[i];
slammingForceData slammingData = slammingForceData[originalTriangleIndex];
forceToAdd += boatPhysicsMath.SlammingForce(slammingData, triangleData, boatArea, boatMass);
boatRB.addForceAtPosition(forceToAdd, triangleData.center);
}
}
//Add all forces that act on the squares below the water
void AddUnderWaterForces()
{
//The resistance coefficient - same for all triangles
float Cf = BoatPhysicsMath.ResistanceCoefficient(
rhoWater,
boatRB.velocity.magnitude,
modifyBoatMesh.CalculateUnderWaterLength());
//To calculate the slamming force we need the velocity at each of the original triangles
List <SlammingForceData> slammingForceData = modifyBoatMesh.slammingForceData;
CalculateSlammingVelocities(slammingForceData);
//Need this data for slamming forces
float boatArea = modifyBoatMesh.boatArea;
float boatMass = boatRB.mass; //Replace this line with your boat's total mass
//To connect the submerged triangles with the original triangles
List <int> indexOfOriginalTriangle = modifyBoatMesh.indexOfOriginalTriangle;
//Get all triangles
List <TriangleData> underWaterTriangleData = modifyBoatMesh.underWaterTriangleData;
for (int i = 0; i < underWaterTriangleData.Count; i++)
{
TriangleData triangleData = underWaterTriangleData[i];
//Calculate the forces
Vector3 forceToAdd = Vector3.zero;
//Force 1 - The hydrostatic force (buoyancy)
forceToAdd += BoatPhysicsMath.BuoyancyForce(rhoWater, triangleData);
//Force 2 - Viscous Water Resistance
forceToAdd += BoatPhysicsMath.ViscousWaterResistanceForce(rhoWater, triangleData, Cf);
//Force 3 - Pressure drag
forceToAdd += BoatPhysicsMath.PressureDragForce(triangleData);
//Force 4 - Slamming force
//Which of the original triangles is this triangle a part of
int originalTriangleIndex = indexOfOriginalTriangle[i];
SlammingForceData slammingData = slammingForceData[originalTriangleIndex];
forceToAdd += BoatPhysicsMath.SlammingForce(slammingData, triangleData, boatArea, boatMass);
//Add the forces to the boat
boatRB.AddForceAtPosition(forceToAdd, triangleData.center);
//Debug
//Normal
//Debug.DrawRay(triangleData.center, triangleData.normal * 3f, Color.white);
//Buoyancy
//Debug.DrawRay(triangleData.center, BoatPhysicsMath.BuoyancyForce(rhoWater, triangleData).normalized * -3f, Color.blue);
//Velocity
//Debug.DrawRay(triangleCenter, triangleVelocityDir * 3f, Color.black);
//Viscous Water Resistance
//Debug.DrawRay(triangleCenter, viscousWaterResistanceForce.normalized * 3f, Color.black);
}
}