/// <summary>
/// Returns true if projectile is still alive
/// </summary>
/// <param name="gameTime"></param>
/// <returns>True if projectile is still alive</returns>
public bool Update(GameTime gameTime, Map map, ParticleTools particleTools)
{
offset += (float)gameTime.ElapsedGameTime.TotalMilliseconds * ProjectileSpeed;
TileInfo.SideType direction = TileInfo.FromFacing(horizontalDirection, verticalDirection);
Rectangle rectangle = CollisionRectangle;
List <CollisionTile> collidingTiles = map.GetCollidingTiles(rectangle, direction);
for (int i = 0; i < collidingTiles.Count; i++)
{
TileInfo.SideType side = TileInfo.OppositeSide(direction);
GameUnit perpendicularPosition = TileInfo.Vertical(side) ?
rectangle.Center.X : rectangle.Center.Y;
GameUnit leadingPosition = rectangle.Side(direction);
bool shouldTestSlopes = true;
TestCollisionInfo testInfo = collidingTiles[i].TestCollision(side, perpendicularPosition,
leadingPosition, shouldTestSlopes);
if (testInfo.isColliding)
{
GameUnit collisionX;
if (TileInfo.Vertical(side))
{
collisionX = perpendicularPosition;
}
else
{
collisionX = testInfo.position;
}
GameUnit collisionY;
if (TileInfo.Vertical(side))
{
collisionY = testInfo.position;
}
else
{
collisionY = perpendicularPosition;
}
particleTools.FrontSystem.AddNewParticle(ProjectileWallParticle.Create(particleTools.Content,
collisionX - Units.HalfTile, collisionY - Units.HalfTile));
return(false);
}
}
if (!alive)
{
return(false);
}
else if (offset >= ProjectileMaxOffsets[gunLevel - 1])
{
particleTools.FrontSystem.AddNewParticle(ProjectileStarParticle.Create(particleTools.Content, X, Y));
return(false);
}
else
{
return(true);
}
}
public Projectile(Sprite sprite,
SpriteState.HorizontalFacing horizontalDirection, SpriteState.VerticalFacing verticalDirection,
GameUnit x, GameUnit y,
GunLevelUnit gunLevel, ParticleTools particleTools)
{
this.sprite = sprite;
this.horizontalDirection = horizontalDirection;
this.verticalDirection = verticalDirection;
this.x = x;
this.y = y;
this.gunLevel = gunLevel;
offset = 0;
alive = true;
particleTools.FrontSystem.AddNewParticle(ProjectileStarParticle.Create(particleTools.Content, x, y));
}