ace/Source/ACE.Server/WorldObjects/WorldObject_Use.cs

using System.Numerics;

using ACE.Entity.Enum;
using ACE.Server.Entity;
using ACE.Server.Network.GameEvent.Events;
using ACE.Server.Network.GameMessages.Messages;

namespace ACE.Server.WorldObjects
{
    partial class WorldObject
    {
        /// <summary>
        /// Used to determine how close you need to be to use an item.
        /// </summary>
        public bool IsWithinUseRadiusOf(WorldObject wo)
        {
            var originDist = Vector3.Distance(Location.ToGlobal(), wo.Location.ToGlobal());
            var radSum = PhysicsObj.GetRadius() + wo.PhysicsObj.GetRadius();
            var radDist = originDist - radSum;
            var useRadius = wo.UseRadius ?? 0.6f;

            // if (this is Player player)
            //    player.Session.Network.EnqueueSend(new GameMessageSystemChat($"OriginDist: {originDist}, RadDist: {radDist}, MyRadius: {PhysicsObj.GetRadius()}, TargetRadius: {wo.PhysicsObj.GetRadius()}, MyUseRadius: {UseRadius ?? 0}, TargetUseRadius: {wo.UseRadius ?? 0}", ChatMessageType.System));

            return radDist <= useRadius;
        }

        /// <summary>
        /// This is raised by Player.HandleActionUseItem.<para />
        /// The item should be in the players possession.
        /// </summary>
        public virtual void UseItem(Player player)
        {
            // Do Nothing by default

#if DEBUG
            var message = $"Default UseItem reached, this object ({Name}) of type ({WeenieType}) not programmed yet."; 
            player.Session.Network.EnqueueSend(new GameMessageSystemChat(message, ChatMessageType.System));
            log.Error(message);
#endif

            player.Session.Network.EnqueueSend(new GameEventUseDone(player.Session));
        }

        /// <summary>
        /// This is raised by Player.HandleActionUseItem.<para />
        /// The item does not exist in the players possession.<para />
        /// If the item was outside of range, the player will have been commanded to move using DoMoveTo before ActOnUse is called.<para />
        /// When this is called, it should be assumed that the player is within range.
        /// </summary>
        public virtual void ActOnUse(WorldObject worldObject)
        {
            // Do Nothing by default
            if (worldObject is Player player)
            {
#if DEBUG
                var message = $"Default ActOnUse reached, this object ({Name}) not programmed yet.";
                player.Session.Network.EnqueueSend(new GameMessageSystemChat(message, ChatMessageType.System));
                log.Error(message);
#endif
                player.Session.Network.EnqueueSend(new GameEventUseDone(player.Session));
            }
        }
    }
}