The Final Drone Grid Game - Beginning Android 3D Game Development - page 364

For each tank in the tank fleet that is active

1. Check for a collision between the ammunition from the tank's weapons and

the object Obj.

2. If there is a collision, apply a linear force to the ammunition and the object by

calling the ApplyLinearImpulse() function

Process the damage to the object by calling TakeDamage()

3.

Start the explosion graphic for the object by calling StartExplosion() 4.

Listing 10-21. Collision Processing Between an Object and a Tank's Live Ammunition

boolean ProcessWeaponAmmoCollisionObject(Object3d Obj)
{
Object3d CollisionObj = null;
boolean hitresult = false;

for (int i = 0; i < MAX_TANKS; i++)
{
if ((m_TankFleet[i] != null) && (m_InService[i] == true))
{
int NumberWeapons = m_TankFleet[i].GetNumberWeapons();

for (int j=0; j < NumberWeapons; j++)
{
CollisionObj = m_TankFleet[i].GetWeapon(j).CheckAmmoCollision(Obj);
if (CollisionObj != null)
{
hitresult = true;
CollisionObj.ApplyLinearImpulse(Obj);

//Process Damage
Obj.TakeDamage(CollisionObj);
// Obj Explosion
SphericalPolygonExplosion Exp = Obj.GetExplosion(0);
if (Exp != null)
{
Exp.StartExplosion(Obj.m_Orientation.GetPosition(),
m_VehicleExplosionMaxVelocity, m_VehicleExplosionMinVelocity);
}
}
}
}
}
return hitresult;
}