/// <summary>
/// Adds a generic item to the appropriate list so that id=t can be displayed and interacted with on screne
/// </summary>
/// <param name="gi"> generic item to add to scene </param>
/// <returns></returns>
public override bool AddObject(GenericItem gi)
{
if (gi is Hero)
{
if (null == heros)
{
return(false);
}
int size_before_add = heros.Count;
Hero hero = (Hero)gi;
heros.Add(hero);
int size_after_add = heros.Count;
if (size_after_add > size_before_add)
{
return(true);
}
}
if (gi is Villain)
{
if (null == villains)
{
return(false);
}
int size_before_add = villains.Count;
Villain villain = (Villain)gi;
villains.Add(villain);
int size_after_add = villains.Count;
if (size_after_add > size_before_add)
{
return(true);
}
}
else
{
if (null == objects)
{
return(false);
}
int size_before_add = objects.Count;
objects.Add(gi);
int size_after_add = objects.Count;
if (size_after_add > size_before_add)
{
return(true);
}
}
return(false);
}
/// <summary>
/// Updates the scene based on incoming messages
/// </summary>
/// <param name="dt">Delta time since thew last update was called</param>
/// <param name="message"> incoming message</param>
public override void Update(TimeSpan dt, GenericMessage message)
{
foreach (GenericItem gi in objects)
{
//update each generic item
gi.Update(dt, message);
}
foreach (Hero hero in heros)
{
//update each generic item
hero.Update(dt, message);
}
foreach (Villain villain in villains)
{
//update each generic item
villain.Update(dt, message);
}
if (message is Message_Attack)
{
Message_Attack mhe = (Message_Attack)message;
switch (mhe.Type)
{
case (Message_Attack.AttackType.Hero_Arrow):
{
//(Terry)TODO: add rotation to arrows, this might require using something other than CanvasBitmap images
Attack attack = new Attack(mhe.Name, mhe.DirectionX, mhe.DirectionY, mhe.Location, Attack.AttackType.Hero_Arrow, mhe.Range, mhe.Damage);
attack.SetBitmapFromImageDictionary("Arrow");
this.AddObject(attack);
break;
}
case (Message_Attack.AttackType.Minion_Arrow):
{
Attack arrow = new Attack(mhe.Name, mhe.DirectionX, mhe.DirectionY, mhe.Location, Attack.AttackType.Boss_Arrow, mhe.Range, mhe.Damage);
arrow.SetBitmapFromImageDictionary("Arrow");
this.AddObject(arrow);
break;
}
}
}
//if two generic items on the canvas have collided find out what collided and apply aprpriate damage
if (message is Message_Collision)
{
Message_Collision attackInfo = (Message_Collision)message;
if (attackInfo.CollisionObject is Attack)
{
Attack attack = (Attack)attackInfo.CollisionObject;
//if the boss is hit by an attack, increase score, reduce bosses health and remove the attack
if (attackInfo.Victim is Boss)
{
Boss boss = (Boss)attackInfo.Victim;
boss.CurrentHealth -= attack.Damage;
Score += attack.Damage;
_score_label.UpdateText("SCORE: " + Score);
objects.Remove(attackInfo.CollisionObject);
if (boss.CurrentHealth <= 0.0f)
{
boss.Level += 1;
boss.MaxHealth += 100;
boss.CurrentHealth = boss.MaxHealth;
}
}
// if the attack hit a minion, remove the attack and the minion
else if (attackInfo.Victim is Villain)
{
Villain villain = (Villain)attackInfo.Victim;
villains.Remove(villain);
objects.Remove(attackInfo.CollisionObject);
}
//if the attack hit the hero, reduce hero's health and check for game over
else if (attackInfo.Victim is Hero)
{
Hero hero = (Hero)attackInfo.Victim;
hero.CurrentHealth -= attack.Damage;
objects.Remove(attackInfo.CollisionObject);
if (hero.CurrentHealth <= 0)
{
heros.Remove(hero);
//add tombstone image where hero died?
// If all heroes (spelled correctly this time) have died it's game over
if (heros.Count <= 0)
{
game_over = true;
}
}
}
}
}
// switch to game over scene
if (game_over)
{
Message_SceneSwitch mss = new Message_SceneSwitch("Game Over Scene");
MessageManager.AddMessageItem(mss);
}
if (message is Message_SpawnMinions)
{
Message_SpawnMinions spawn = (Message_SpawnMinions)message;
Random r = new Random();
for (int i = 0; i < spawn.NumberOfMinions; i++)
{
Villain villain = new Villain("minion");
villain.Location = new System.Numerics.Vector2(r.Next(0, _width), r.Next(0, _height));
villain.SetBitmapFromImageDictionary("MinionLeft");
this.AddObject(villain);
}
}
}
