void act(Enemy monster, actionDecision action)
{
switch (action)
{
case actionDecision.FLEE:
flee(monster);
break;
case actionDecision.ALIGN:
align(monster);
break;
case actionDecision.ADVANCE:
advance(monster);
break;
case actionDecision.EVADE:
evade(monster);
break;
case actionDecision.FIRE:
fire(monster);
break;
case actionDecision.IDLE:
idle(monster);
break;
}
}
public void Update(int elapsed_time) // detect if explosion needs to be drawn, determine what the monster needs to do, handle dead monsters
{
for (int i = 0; i < monsters.Count(); ++i)
{
Enemy monster = monsters.ElementAt(i);
bool mons_removed = false;
if (monster.getHealth() <= 0)
{
game_state.monster_engine.Remove(monster);
mons_removed = true;
game_state.fx_engine.RequestExplosion(explosionType.SMALL, monster.getX() + (monster.getWidth() / 2), monster.getY() + (monster.getHeight() / 2));
game_state.fx_engine.RequestSound(soundType.ENEMY_DIE);
}
if (mons_removed == false)
{
if (IsVisible(monster))
{
move_towards_target(monster);
if (monster.next_think_time >= 2000) //TIME DELAY
{
actionDecision action = think(monster);
act(monster, action);
monster.next_think_time = 0;
}
else
{
monster.next_think_time += elapsed_time;
}
}
}
}
}
//Two basic functions for the Monster engine
actionDecision think(Enemy monster)
{
float[] ratings = new float[(int)actionDecision.NUM_ACTIONS];
int dist_x = game_state.local_player.getX() - monster.getX();
int dist_y = game_state.local_player.getY() - monster.getY();
int Dp = GetRating(Math.Sqrt(Math.Pow(dist_x, 2) + Math.Pow(dist_y, 2)), 800.0f);
int Db = 0; //Bullet system not in yet
int Alg = 0;
if (Math.Abs(dist_x) < Math.Abs(dist_y))
{
Alg = GetRating(Math.Abs(dist_x), 400);
}
else
{
Alg = GetRating(Math.Abs(dist_y), 240);
}
int Hlt = GetRating(monster.getHealth(), monster.getMaxHealth());
actionDecision retval = actionDecision.FLEE;
float max_value = 0;
for (int i = 0; i < (int)actionDecision.NUM_ACTIONS; ++i)
{
ratings[i] =
decision_matrix[(int)monster.getType(), i, (int)actionFactor.DP] * Dp +
decision_matrix[(int)monster.getType(), i, (int)actionFactor.DB] * Db +
decision_matrix[(int)monster.getType(), i, (int)actionFactor.AL] * Alg +
decision_matrix[(int)monster.getType(), i, (int)actionFactor.HL] * Hlt;
if (ratings[i] > max_value)
{
retval = (actionDecision)i;
max_value = ratings[i];
}
}
if (max_value < 5)
{
return(actionDecision.IDLE);
}
return(retval);
}
public void Update(int elapsed_time)
{
for (int i = 0; i < monsters.Count(); ++i)
{
Enemy monster = monsters.ElementAt(i);
bool mons_removed = false;
/*
* if (monster.col_tok.HasCollisions())//&& monster.col_tok.GetHitType() == ColType.BULLET)
* {
*
* List<ColToken> cols = monster.col_tok.GetCollisions();
* for (int j = 0; j < cols.Count(); ++j)
* {
* if (cols.ElementAt(j).GetLocalType() == ColType.BULLET )
* {
* //MAGIC NUMBER
* Bullet bull = (Bullet)cols.ElementAt(j).GetParent();
* int damage = 0;
* switch (bull.type)
* {
* case bulletType.SMALL:
* damage = 5;
* break;
* case bulletType.SWORD:
* damage = 10;
* break;
*
* }
* monster.setHealth(monster.getHealth() - (game_state.local_player.getAttackBonus()+damage));
* //dmg_sound.Play();
* if (monster.getHealth() <= 0)
* {
* game_state.monster_engine.Remove(monster);
* mons_removed = true;
* game_state.fx_engine.RequestExplosion(explosionType.SMALL, monster.getX()+(monster.getWidth()/2), monster.getY()+(monster.getHeight()/2));
* }
* game_state.fx_engine.RequestSound(soundType.HURT);
* }
* else if (cols.ElementAt(j).GetLocalType() == ColType.MAP)
* {
* //monster.revertX();
* //monster.revertY();
* }
* }
*
* monster.col_tok.ResetCollisions();
* }
* */
if (monster.getHealth() <= 0)
{
game_state.monster_engine.Remove(monster);
mons_removed = true;
game_state.fx_engine.RequestExplosion(explosionType.SMALL, monster.getX() + (monster.getWidth() / 2), monster.getY() + (monster.getHeight() / 2));
}
if (mons_removed == false)
{
if (IsVisible(monster))
{
move_towards_target(monster);
if (monster.next_think_time >= 2000) //TIME DELAY
{
actionDecision action = think(monster);
act(monster, action);
monster.next_think_time = 0;
}
else
{
monster.next_think_time += elapsed_time;
}
}
}
}
}
void act(Enemy monster, actionDecision action)
{
switch (action)
{
case actionDecision.FLEE:
flee(monster);
break;
case actionDecision.ALIGN:
align(monster);
break;
case actionDecision.ADVANCE:
advance(monster);
break;
case actionDecision.EVADE:
evade(monster);
break;
case actionDecision.FIRE:
fire(monster);
break;
case actionDecision.IDLE:
idle(monster);
break;
}
}
