/// <summary>
/// Constructor
/// </summary>
/// <param name="_model">Projectile model</param>
/// <param name="_position">Position of the missile</param>
/// <param name="_angle">Angle at which the missile will be fired</param>
/// <param name="_velocity">Velocity of the missile</param>
/// <param name="_alive">Alive</param>
/// <param name="_firedBy">Who fired the missile</param>
public Projectile(Vector3 _position, VTankObject.Point target, double _angle, double _velocity,
float _alive, PlayerTank _firedBy, ProjectileData projectileData)
{
this.data = projectileData;
this.position = _position;
position = _position + Vector3.UnitZ; ;
base.ZRotation = (float)_angle;
velocity = (float)_velocity;
timeAlive = _alive;
elapsed = 0;
this.boundingSphere.Radius = projectileData.CollisionRadius;
SetBoundingSpherePosition();
owner = _firedBy;
RenderID = -1;
ID = projectileData.ID;
origin = position;
if (_firedBy.Weapon.HasFiringArc)
{
this.usingLaunchAngle = true;
float swivelAngle = ZRotation;
float tiltAngle = _firedBy.Weapon.LaunchAngle;
float projection = DEFAULT_CANNON_LENGTH * (float)Math.Cos(tiltAngle);
float tipX = -projection * (float)Math.Cos(swivelAngle);
float tipY = -projection * (float)Math.Sin(swivelAngle);
float tipZ = Math.Abs(DEFAULT_CANNON_LENGTH * (float)Math.Sin(swivelAngle));
tip = new float[] { tipX, tipY, tipZ };
Vector3 newPosition = position + new Vector3(tipX, tipY, tipZ);
// Calculate initial velocity based on the distance we travel.
float distance = (float)Math.Sqrt(
Math.Pow(target.x - newPosition.X, 2) +
Math.Pow(target.y - newPosition.Y, 2));
float maxDistance = (int)projectileData.Range;
if (distance > maxDistance)
distance = maxDistance;
// TODO: This is a temporary work-around until we figure out what velocity component
// is missing from the formula.
float offset = 1.1f;
if (tiltAngle > MathHelper.ToRadians(45.0f))
offset = 1.6f;
float V = (float)Math.Sqrt(-gravity * distance * offset);
float Vx = -V * (float)(Math.Cos(tiltAngle) * Math.Cos(swivelAngle));
float Vy = -V * (float)(Math.Cos(tiltAngle) * Math.Sin(swivelAngle));
float Vz = V * (float)Math.Sin(tiltAngle);
componentVelocity = new float[] { Vx, Vy, Vz };
elapsedDelta = 0f;
/*this.verticalVelocity = this.FindVerticalVelocity(_firedBy.Weapon.LaunchAngle, velocity);
float flightTime = this.FindFlightTime(verticalVelocity, gravity);
float horizontalVelocity = this.FindHorizontalVelocity(
distance,
flightTime);
velocity = horizontalVelocity;*/
}
Object3 turret = owner.Turret;
ModelBoneCollection.Enumerator collection = turret.Model.Bones.GetEnumerator();
List<ModelBone> emitters = new List<ModelBone>();
while (collection.MoveNext())
{
if (collection.Current.Name.StartsWith("Emitter"))
{
emitters.Add(collection.Current);
}
}
if (emitters.Count == 0)
{
ServiceManager.Game.Console.DebugPrint(
"Warning: Can't attach to owner tank, no emitter exists.");
}
else
{
int emitter = _firedBy.Weapon.GetNextEmitterIndex();
this.Attach(turret, emitters[emitter].Name);
this.MimicRotation(turret);
this.Unattach();
Vector3 forward = emitters[emitter].Transform.Forward;
forward.Z = Math.Abs(forward.Z);
//position *= forward;
}
if (!String.IsNullOrEmpty(projectileData.Model))
{
model = new Object3(ServiceManager.Resources.GetModel("projectiles\\" + projectileData.Model), position);
model.MimicPosition(this, Vector3.Zero);
model.MimicRotation(this);
modelRenderID = ServiceManager.Scene.Add(model, 3);
}
else
{
model = null;
}
if (!String.IsNullOrEmpty(projectileData.ParticleEffect) && projectileData.Model == null)
{
ParticleEmitter.MimicPosition(this, Vector3.Zero);
ParticleEmitter.MimicRotation(this);
particleEmitterRenderID = ServiceManager.Scene.Add(ParticleEmitter, 3);
}
else if (!String.IsNullOrEmpty(projectileData.ParticleEffect))
{
ParticleEmitter = new ParticleEmitter(projectileData.ParticleEffect, this.Position);
this.particleEmitterRenderID = ServiceManager.Scene.Add(ParticleEmitter, 3);
ParticleEmitter.Follow(this);
}
}
