Melee Attack tutorial

In this tutorial we will make the human female avatar be able to do melee attack using the “Action2” or the Number 2 Key. 

1.  To CasualHumanFemaleAvatar.cs

add to the beginning of the file:

using System.Collections.Generic;

using Microsoft.Xna.Framework;

using Visual3D.Commands;

2. Add the following:

        protected override void OnConstructPrototype()

        {

            float animSpeed = 1.2f * SpeedScalar;

            base.OnConstructPrototype();

            if (Animations.Count == 0) // once we start saving animations, this won't be needed anymore, even for prototypes.

            {

                AnimationSet.ConfigureAnimations(

                    new Animation(AvatarCommands.Action2, "attack2", animSpeed, null, false, false)

                    );

                AnimationSet.ConfigureAnimations(DefineCustomAnimations(animSpeed));

            }

            CommandSpec newChildren = new CommandSpec(AvatarCommands.LaunchMissile, new MethodCommand(Attack, null));

            AddCommand(newChildren);

            ReplaceCommand(new AutoFirePlusAnimationActivity(AvatarCommands.Action2, "AnimationFireWeapon", Attack));

        }

3.  Add the following:

        List<Avatar> _currentAttackTargets = new List<Avatar>(10);

        public void Attack(object args)

        {

            float maxDist2 = 10;// range* range;

            foreach (Avatar a in Avatars)

            {

                if (a == this)

                    continue;

                Vector3 targetOffset = a.WorldPosition - WorldPosition;

                float targetDist2 = targetOffset.LengthSquared();

                if (targetDist2 <= maxDist2)

                {

                    Quaternion thisOrientation = WorldOrientation;

                    Quaternion targetOrientation = a.WorldOrientation;

                    float angle = Quats.Angle(ref thisOrientation, ref targetOrientation);

                    if (angle < 315f || angle > 45f)

                        _currentAttackTargets.Add(a);

                }

            }

            foreach (Avatar target in _currentAttackTargets)

            {

                target.OnDamage(new Combat.DamagedEvent(this, target, 10));

            }

            _currentAttackTargets.Clear();

        }

4.  Build Solution and run Tech Demos.  I did this after building My First Tutorial that had both a female and male avatar.

5.  Move the female close to the male.  Press the “2” key.  See the male move away because it was attacked.

by Mike Hoisington, Tashi Duane