protected void SpawnProjectile(string projectileName, ProjectileSource source)
{
var slop = 20;
//spawn the projectile just outside the players bounding box in the direction the player is facing.
var offset = GameUtils.RotationToVec2((float)(RigidBody.GetAngle() * 180 / System.Math.PI));
var offsetLength = GameUtils.PhysicsVec(new Vector2(0, (Texture.Height + slop) / 2));
offset = offset * offsetLength.Length();
WeaponFactory.Instance.CreateProjectile(projectileName, RigidBody.GetPosition() + offset, RigidBody.GetAngle(), source);
}
/// <summary>
/// update override
/// </summary>
/// <param name="gameTime"></param>
public override void Update(GameTime gameTime)
{
if (Active)
{
var rotationDegrees = RigidBody.GetAngle() * 180 / System.Math.PI;
if (Keyboard.GetState().IsKeyDown(Keys.OemOpenBrackets))
{
if (Vec2.Distance(Vec2.Zero, RigidBody.GetLinearVelocity()) < GameData.PlayerMaxSpeed)
{
//apply impulse to push the player to left
var impulseVec = GameUtils.RotationToVec2((float)rotationDegrees - 90);
RigidBody.ApplyImpulse(impulseVec * GameData.PlayerLateralImpulse
, RigidBody.GetPosition());
}
}
if (Keyboard.GetState().IsKeyDown(Keys.OemCloseBrackets))
{
if (Vec2.Distance(Vec2.Zero, RigidBody.GetLinearVelocity()) < GameData.PlayerMaxSpeed)
{
//apply impulse to push the player to right
var impulseVec = GameUtils.RotationToVec2((float)rotationDegrees + 90);
RigidBody.ApplyImpulse(impulseVec * GameData.PlayerLateralImpulse
, RigidBody.GetPosition());
}
}
if (FilteredInputListener.WasKeyPressed(Keys.Left))
{
WeaponInventory.SelectPreviousWeapon();
FilteredInputListener.ResetKey(Keys.Left);
}
if (FilteredInputListener.WasKeyPressed(Keys.Right))
{
WeaponInventory.SelectNextWeapon();
FilteredInputListener.ResetKey(Keys.Right);
}
if (Keyboard.GetState().IsKeyDown(Keys.W))
{
if (Vec2.Distance(Vec2.Zero, RigidBody.GetLinearVelocity()) < GameData.PlayerMaxSpeed)
{
var impulseVec = GameUtils.RotationToVec2((float)rotationDegrees);
if (Vec2.Dot(impulseVec, RigidBody.GetLinearVelocity()) == 0)
{
RigidBody.SetLinearVelocity(Vec2.Zero);
}
RigidBody.ApplyImpulse(impulseVec * GameData.PlayerImpulse
, RigidBody.GetPosition());
}
}
if (Keyboard.GetState().IsKeyDown(Keys.S))
{
if (Vec2.Distance(Vec2.Zero, RigidBody.GetLinearVelocity()) < GameData.PlayerMaxSpeed)
{
var impulseVec = GameUtils.RotationToVec2((float)rotationDegrees);
RigidBody.ApplyImpulse(impulseVec * -GameData.PlayerImpulse
, RigidBody.GetPosition());
}
}
if (Keyboard.GetState().IsKeyDown(Keys.D))
{
//DecreaseLinearVelocity(GameData.PlayerTurnVelocityDecrement, 1);
RigidBody.ApplyTorque(GameData.PlayerTurnTorque);
}
if (Keyboard.GetState().IsKeyDown(Keys.A))
{
//DecreaseLinearVelocity(GameData.PlayerTurnVelocityDecrement, 1);
RigidBody.ApplyTorque(-GameData.PlayerTurnTorque);
}
if (Keyboard.GetState().IsKeyDown(Keys.Space))
{
var weapon = WeaponInventory.GetSelectedWeapon();
if (weapon != null && weapon.RemainingAmmo > 0)
{
if (DateTime.Now - _lastProjectileTime > TimeSpan.FromMilliseconds(100))
{
ShootingEffect.Play();
_lastProjectileTime = DateTime.Now;
WeaponInventory.DecreaseAmmo(1);
SpawnProjectile(weapon.ProjectileName, ProjectileSource.Player);
}
}
}
if (Keyboard.GetState().IsKeyUp(Keys.W) &&
Keyboard.GetState().IsKeyUp(Keys.A) &&
Keyboard.GetState().IsKeyUp(Keys.S) &&
Keyboard.GetState().IsKeyUp(Keys.D))
{
DecreaseLinearVelocity(GameData.PlayerTurnVelocityDecrement, 0);
}
if (Keyboard.GetState().IsKeyUp(Keys.A) && Keyboard.GetState().IsKeyUp(Keys.D))
{
RigidBody.SetAngularVelocity(0);
}
}
}
