//missile hit debris.
public void AddMissleHitDebris(Vector3 position, Vector3 moveDir)
{
int amount = FrameworkCore.r.Next(3, 6);
for (int i = 0; i < amount; i++)
{
int index = -1;
if (!GetFreeIndex(out index))
{
return;
}
DebrisItem item = debrisItems[index];
item.debrisModel = getRandomDebris();
moveDir.Normalize();
item.moveDir = moveDir;
item.position = position;
item.lifeTime = FrameworkCore.r.Next(1000, 3000);
item.moveSpeed = Helpers.randFloat(4, 8);
item.angularVelocity = new Vector3(Helpers.randFloat(-1, 1), Helpers.randFloat(-3, 3), 0);
item.isActive = true;
}
}
//hulk trail.
public void AddHulkTrail(Vector3 position, Vector3 moveDir)
{
int amount = FrameworkCore.r.Next(2, 6);
for (int i = 0; i < amount; i++)
{
int index = -1;
if (!GetFreeIndex(out index))
{
return;
}
DebrisItem item = debrisItems[index];
item.debrisModel = getRandomDebris();
moveDir.Normalize();
item.moveDir = moveDir;
item.position = position;
item.position.X += Helpers.randFloat(-1.5f, 1.5f);
item.position.Y += Helpers.randFloat(-1.5f, 1.5f);
item.lifeTime = FrameworkCore.r.Next(1500, 3000);
item.moveSpeed = Helpers.randFloat(0.5f, 1.5f);
item.angularVelocity = new Vector3(Helpers.randFloat(-2, 2), Helpers.randFloat(-4, 4), 0);
item.isActive = true;
}
}
public DebrisManager()
{
debrisItems = new DebrisItem[MAXDEBRISITEMS];
for (int i = 0; i < debrisItems.Length; i++)
{
debrisItems[i] = new DebrisItem();
}
}
/// <summary>
/// debris that shoots out when hulk is destroyed. shoots out in random directions.
/// </summary>
/// <param name="position"></param>
/// <param name="moveDir"></param>
public void AddHulkDebris(Vector3 position, bool isAsteroid)
{
int amount = FrameworkCore.r.Next(16, 24);
for (int i = 0; i < amount; i++)
{
int index = -1;
if (!GetFreeIndex(out index))
{
return;
}
DebrisItem item = debrisItems[index];
if (!isAsteroid)
{
item.debrisModel = getRandomDebris();
}
else
{
item.debrisModel = ModelType.asteroidchunk;
}
//give position a random offset.
Vector3 itemPosition = position +
new Vector3(
Helpers.randFloat(-5, 5),
Helpers.randFloat(-5, 5),
Helpers.randFloat(-5, 5));
item.position = itemPosition;
item.lifeTime = FrameworkCore.r.Next(500, 2000);
Vector3 moveDir = item.position - position;
moveDir.Normalize();
item.moveDir = moveDir;
item.moveSpeed = Helpers.randFloat(12, 48);
item.angularVelocity = new Vector3(Helpers.randFloat(-3, 3), Helpers.randFloat(-6, 6), 0);
item.isActive = true;
}
}
public void Update(GameTime gameTime)
{
float dt = (float)gameTime.ElapsedGameTime.TotalSeconds;
for (int i = 0; i < debrisItems.Length; i++)
{
if (!debrisItems[i].isActive)
{
continue;
}
DebrisItem item = debrisItems[i];
item.position += (item.moveSpeed * item.moveDir) * dt;
if (Math.Abs(item.angularVelocity.X) > 0)
{
item.angles.X += item.angularVelocity.X * dt;
}
if (Math.Abs(item.angularVelocity.Y) > 0)
{
item.angles.Y += item.angularVelocity.Y * dt;
}
if (Math.Abs(item.angularVelocity.Z) > 0)
{
item.angles.Z += item.angularVelocity.Z * dt;
}
item.rotation = Quaternion.CreateFromYawPitchRoll(item.angles.X, item.angles.Y, item.angles.Z);
item.lifeTime -= (int)gameTime.ElapsedGameTime.TotalMilliseconds;
if (item.emitter != null)
{
item.emitter.Update(gameTime, item.position);
}
if (item.lifeTime <= 0)
{
item.isActive = false;
}
}
}
//destruction debris
public void AddDebris(ModelType model, Vector3 position, Vector3 moveDir)
{
int index = -1;
if (!GetFreeIndex(out index))
{
return;
}
DebrisItem item = debrisItems[index];
item.debrisModel = model;
moveDir.Normalize();
item.moveDir = moveDir;
item.position = position;
item.lifeTime = FrameworkCore.r.Next(5000, 10000);
item.moveSpeed = Helpers.randFloat(8, 16);
item.angularVelocity = new Vector3(Helpers.randFloat(-1, 1), Helpers.randFloat(-3, 3), 0);
item.isActive = true;
}
//when a rocket bounces off an armored ship.
public void AddRocketDeflect(ModelType model, Vector3 position, Vector3 moveDir)
{
int index = -1;
if (!GetFreeIndex(out index))
{
return;
}
DebrisItem item = debrisItems[index];
item.debrisModel = model;
moveDir.Normalize();
item.moveDir = moveDir;
item.position = position;
item.lifeTime = 5000;
item.debrisColor = new Color(192, 192, 192);
item.moveSpeed = MathHelper.Lerp(4, 6, (float)FrameworkCore.r.NextDouble());
item.angularVelocity = new Vector3(0, MathHelper.Lerp(-3, 3, (float)FrameworkCore.r.NextDouble()), 0);
item.emitter = FrameworkCore.Particles.CreateDeflectEmitter(item.position);
item.isActive = true;
}