public const int STRENGTH = 50; // as 50 damage spell
public MIHealBall(Unit caster, IPair destination) : base(80, caster)
{
radius_ = RADIUS;
damage_ = -10;
speed_ = 350;
hurt_self_ = true;
explode_enemy_ = false;
explode_enemy_missile_ = false;
Unit target = null;
bool used = false;
long min_distance = 0, temp_distance;
foreach (Unit unit in Game.Unit_List)
{
if (unit == caster)
{
continue;
}
if (used == false)
{
used = true;
target = unit;
min_distance = (unit.Pos - Pos).LengthSquare();
}
else
{
temp_distance = (unit.Pos - Pos).LengthSquare();
if (temp_distance < min_distance)
{
target = unit;
min_distance = temp_distance;
}
}
}
if (target != null)
{
destination.Clone(target.Pos);
}
IPair delta = destination - caster.Pos;
move_vector_ = delta.Clone();
move_vector_.ChangeLength(speed_);
delta.ChangeLength(GameDef.UNIT_RADIUS * GameDef.PIXEL_SCALE);
Pos.Clone(caster.Pos);
Pos.Add(delta);
}
// override
public override void Update()
{
hp_ += GameDef.UNIT_RECOVER;
hp_ = Math.Min(hp_, GameDef.UNIT_MAX_HP * GameDef.PIXEL_SCALE);
// cd count
for (int i = 0; i < GameDef.SPELL_COUNT; ++i)
{
if (cd_list_[i] > 0)
{
--cd_list_[i];
}
}
// move
IPair delta = repusle_.Clone();
if (order_.Type == 1)
{
IPair move_vector = order_.Param1 - Pos;
if (move_vector.LengthSquare() > speed_ * speed_)
{
move_vector.ChangeLength(speed_);
}
else
{
order_.Stop();
}
delta.Add(move_vector);
}
// repusle decrease
long repusle_length_square = repusle_.LengthSquare();
long repusle_decrease = speed_ >> GameDef.REPULSE_DECREASE_FACTOR;
if (repusle_length_square < repusle_decrease * repusle_decrease)
{
repusle_.X = repusle_.Y = 0;
}
else
{
repusle_.ChangeLength((long)Math.Sqrt((double)repusle_length_square) - repusle_decrease);
}
Pos.Add(delta);
GameDef.AdjustCollisionWall(Pos, Radius);
}
// operator
public void Damage(Player player, IPair pos, int damage)
{
hp_ -= damage;
mp_ += damage; // 補血就賺囉
if (mp_ < 0)
{
mp_ = 0;
}
if (damage <= 0)
{
return; // heal
}
last_damage_ = player;
IPair delta = pos_ - pos;
if (delta.Zero() == false)
{
delta.ChangeLength((damage * 3 * (mp_ / GameDef.PIXEL_SCALE + 100) / 100) >> 1);
repusle_.Add(delta);
}
}