/// <summary>
/// Gets the first <see cref="IUsableEntity"/> that intersects a specified area.
/// </summary>
/// <param name="c">The <see cref="ISpatialCollection"/>.</param>
/// <param name="rect"><see cref="Rectangle"/> of the area to check.</param>
/// <param name="charEntity"><see cref="CharacterEntity"/> that must be able to use the
/// <see cref="IUsableEntity"/>.</param>
/// <returns>First <see cref="IUsableEntity"/> that intersects the specified area that the
/// <paramref name="charEntity"/> is able to use, or null if none.</returns>
public static IUsableEntity GetUsable(this ISpatialCollection c, Rectangle rect, CharacterEntity charEntity)
{
return c.Get<IUsableEntity>(rect, x => x.CanUse(charEntity));
}
/// <summary> /// Picks up this <see cref="Entity"/>. /// </summary> /// <param name="charEntity"><see cref="CharacterEntity"/> that is trying to pick up this <see cref="Entity"/>.</param> /// <returns>True if this <see cref="Entity"/> was successfully picked up, else false.</returns> public abstract bool Pickup(CharacterEntity charEntity);
/// <summary>
/// Gets a <see cref="Rectangle"/> containing the hit area for a melee attack.
/// </summary>
/// <param name="c">The <see cref="CharacterEntity"/> that is attacking.</param>
/// <param name="range">The range of the attack.</param>
/// <returns>The <see cref="Rectangle"/> that describes the hit area for a melee attack.</returns>
public static Rectangle GetMeleeAttackArea(CharacterEntity c, ushort range)
{
// Start with the rect for the char's area
var ret = c.ToRectangle();
// Add the range to the width
ret.Width += range;
// If looking left, subtract the range from the X position so that the area is to the left, not right
if (c.Heading == Direction.West || c.Heading == Direction.SouthWest || c.Heading == Direction.NorthWest)
ret.X -= range;
return ret;
}
/// <summary> /// Picks up this <see cref="Entity"/>. /// </summary> /// <param name="charEntity"><see cref="CharacterEntity"/> that is trying to pick up this <see cref="Entity"/>.</param> /// <returns>True if this <see cref="Entity"/> was successfully picked up, else false.</returns> public abstract bool Pickup(CharacterEntity charEntity);