public void pause()
{
moving = !moving;
collided = true;
R1.x = gunball.transform.position.x;
R1.y = gunball.transform.position.y;
R1.z = gunball.transform.position.z;
R2.x = target.transform.position.x;
R2.y = target.transform.position.y;
R2.z = target.transform.position.z;
P.z = target.transform.position.z - 0.5f;
P.x = gunball.transform.position.x + (target.transform.position.x - gunball.transform.position.x) / 2;
//reposition the cube
gunball.transform.position = new Vector3(gunball.transform.position.x, gunball.transform.position.y, target.transform.position.z - 1);
//Lab #10
normals.x = target.transform.position.x - gunball.transform.position.x;
normals.z = target.transform.position.z - gunball.transform.position.z;
//lab #11 additions
lowCaseR1 = PhysicsCalculator.calculateSubtractVector(P, gunball.transform.position);
lowCaseR2 = PhysicsCalculator.calculateSubtractVector(P, target.transform.position);
//hacky fix :)
normals.x = 0;
tangentials.z = normals.x;
//--------------------------------
jImpulse = PhysicsCalculator.calculateJImpulse((gunBallVelocity - targetVelocity), e, projMass, targetMass, normals, lowCaseR1, lowCaseR2, moi1, moi2);
omegaBallF = -(omegaBallI + Vector3.Cross(lowCaseR1, (normals * jImpulse)) / moi1);
omegaTargetF = omegaTargetI + Vector3.Cross(lowCaseR2, (normals * jImpulse)) / moi2;
//Lab #10
jNormal = (jImpulse * normals.z) + (0 * normals.x);
//react to the collision
gunBallVelocityFinal = PhysicsCalculator.calculateRecoilVelocity(jNormal, projMass, gunBallVelocity);
targetVelocityFinal = PhysicsCalculator.calculateRecoilVelocity(-jNormal, targetMass, targetVelocity);
tangentials.z = normals.x * -1;
tangentials.x = normals.z;
bulletinitialNormal = (gunBallVelocity * normals.z) + (0 * normals.x);
bulletinitialTang = (gunBallVelocity * tangentials.z) + (0 * tangentials.x);
targetinitialNormal = (targetVelocity * normals.z) + (0 * normals.x);
targetinitialTang = (targetVelocity * tangentials.z) + (0 * tangentials.z);
//final normals
bulletZfinalNormal = (jNormal / projMass + bulletinitialNormal) * normals.z;
bulletZfinalTang = (bulletinitialTang * tangentials.z);
targetZfinalNormal = ((-jNormal) / targetMass + targetinitialNormal) * normals.z;
targetZfinalTang = (targetinitialTang * tangentials.z);
//z velocities
bulletZfinal = bulletZfinalNormal + bulletZfinalTang;
targetZfinal = targetZfinalNormal + targetZfinalTang;
bulletXfinalNormal = (jNormal / projMass + bulletinitialNormal) * normals.x;
bulletXfinalTang = (bulletinitialTang * tangentials.x);
targetXfinalNormal = ((-jNormal) / targetMass + targetinitialNormal) * normals.x;
targetXfinalTang = targetinitialTang * tangentials.x;
//x velocities
bulletXFinal = bulletXfinalNormal + bulletXfinalTang;
targetXFinal = targetXfinalNormal + targetXfinalTang;
//bullet, target, final
//momentum
momentumInitialZ.x = projMass * gunBallVelocity;
momentumInitialZ.y = targetMass * targetVelocity;
momentumInitialZ.z = momentumInitialZ.x + momentumInitialZ.y;
momentumFinalZ.x = projMass * bulletZfinal;
momentumFinalZ.y = targetMass * targetZfinal;
momentumFinalZ.z = momentumFinalZ.x + momentumFinalZ.y;
momentumInitialX.x = 0f;
momentumInitialX.y = 0f;
momentumInitialX.z = momentumInitialX.x + momentumInitialX.y;
momentumFinalX.x = projMass * bulletXFinal;
momentumFinalX.y = targetMass * targetXFinal;
momentumFinalX.z = momentumFinalX.x + momentumFinalX.y;
//energy
energyInitialZ.x = 0.5f * projMass * gunBallVelocity * gunBallVelocity;
energyInitialZ.y = 0.5f * targetMass * targetVelocity * targetVelocity;
energyInitialZ.z = energyInitialZ.x + energyInitialZ.y;
energyFinalZ.x = 0.5f * projMass * bulletZfinal * bulletZfinal;
energyFinalZ.y = 0.5f * targetMass * targetZfinal * targetZfinal;
energyFinalZ.z = energyFinalZ.x + energyFinalZ.y;
energyInitialX.x = 0.5f * projMass * 0.0f * 0.0f;
energyInitialX.y = 0.5f * targetMass * 0.0f * 0.0f;
energyInitialX.z = energyInitialX.x + energyInitialX.y;
energyFinalX.x = 0.5f * projMass * bulletXFinal * bulletXFinal;
energyFinalX.y = 0.5f * targetMass * targetXFinal * targetXFinal;
energyFinalX.z = energyFinalX.x + energyFinalX.y;
//rotational energy
rotEnergy.x = (0.5f * moi1 * omegaBallF.y * omegaBallF.y);
rotEnergy.y = (0.5f * moi2 * omegaTargetF.y * omegaTargetF.y);
rotEnergy.z = rotEnergy.x + rotEnergy.y;
totalEnergy = energyFinalZ.z + (0.5f * moi1 * omegaBallF.y * omegaBallF.y) + (0.5f * moi2 * omegaTargetF.y * omegaTargetF.y);
//gunball momentum values
Vector3 gunballInitialMomentum = new Vector3(momentumInitialX.x, 0.0f, momentumInitialZ.x);
//nothing happening in x, hence why it's 0
Vector3 gunballFinalMomentum = new Vector3(0.0f, 0.0f, momentumFinalZ.x);
//target momentum values
Vector3 targetInitialMomentum = new Vector3(momentumInitialX.y, 0.0f, momentumInitialZ.y);
//nothing happening in x, hence why it's 0
Vector3 targetFinalMomentum = new Vector3(0.0f, 0.0f, momentumFinalZ.y);
LInitial = PhysicsCalculator.calculateAngularMomentum(lowCaseR1, lowCaseR2, gunballInitialMomentum, targetInitialMomentum);
LFinal1 = Vector3.Cross(lowCaseR1, gunballFinalMomentum) + (moi1 * omegaBallF);
LFinal2 = Vector3.Cross(lowCaseR2, targetFinalMomentum) + (moi2 * omegaTargetF);
LFinalTotal = LFinal1 + LFinal2;
}