/**
 * @class Healing spell
 * @augments RPG.Spells.BaseSpell
 */
RPG.Spells.Heal = OZ.Class().extend(RPG.Spells.BaseSpell);
RPG.Spells.Heal.name = "heal";
RPG.Spells.Heal.cost = 4;
RPG.Spells.Heal.prototype.init = function(caster) {
	this.parent(caster);
	this._type = RPG.SPELL_TOUCH;
}

RPG.Spells.Heal.prototype.cast = function(dir) {
	var map = this._caster.getCell().getMap();
	var target = this._caster.getCell().getCoords().clone().plus(RPG.DIR[dir]);
	var cell = map.at(target);
	var being = cell.getBeing();

	if (!being) {
		RPG.UI.buffer.message("Nothing happens.");
		return;
	}

	being.heal(5); /* FIXME amount */
}

/**
 * @class Teleporting spell
 * @augments RPG.Spells.BaseSpell
 */
RPG.Spells.Teleport = OZ.Class().extend(RPG.Spells.BaseSpell);
RPG.Spells.Teleport.name = "teleport";
RPG.Spells.Teleport.cost = 7;
RPG.Spells.Teleport.prototype.init = function(caster) {
	this.parent(caster);
	this._type = RPG.SPELL_TARGET;
}

RPG.Spells.Teleport.prototype.cast = function(coords) {
	var map = this._caster.getCell().getMap();
	var target = map.at(coords);
	
	if (!target || !target.isFree()) {
		RPG.UI.buffer.message("You cannot teleport to that place.");
		return;
	}

	this._caster.teleport(target);
}

/**
 * @class Knocking (unlocking) spell
 * @augments RPG.Spells.BaseSpell
 */
RPG.Spells.Knock = OZ.Class().extend(RPG.Spells.BaseSpell);
RPG.Spells.Knock.name = "knock";
RPG.Spells.Knock.cost = 3;
RPG.Spells.Knock.prototype.init = function(caster) {
	this.parent(caster);
	this._type = RPG.SPELL_TOUCH;
}

RPG.Spells.Knock.prototype.cast = function(dir) {
	var map = this._caster.getCell().getMap();
	var target = this._caster.getCell().getCoords().clone().plus(RPG.DIR[dir]);
	var cell = map.at(target);
	var feature = cell.getFeature();

	if (feature && feature instanceof RPG.Features.Door && feature.isLocked()) {
		feature.unlock();
		RPG.UI.buffer.message("The door magically unlocks!");
	} else {
		RPG.UI.buffer.message("Nothing happens.");
		return;
	}
}

/**
 * @class Explosion spell
 * @augments RPG.Spells.Attack
 */
RPG.Spells.MagicExplosion = OZ.Class().extend(RPG.Spells.Attack);
RPG.Spells.MagicExplosion.name = "magic explosion";
RPG.Spells.MagicExplosion.cost = 11;
RPG.Spells.MagicExplosion.damage = new RPG.Misc.RandomValue(5, 3);
RPG.Spells.MagicExplosion.prototype.init = function(caster) {
	this.parent(caster);
	this._type = RPG.SPELL_SELF;
	this._radius = 2;

	this._explosionImage = "magic-explosion";
	this._color = "yellow";
}

RPG.Spells.MagicExplosion.prototype.getRadius = function() {
	return this._radius;
}

RPG.Spells.MagicExplosion.prototype.cast = function() {
	this.explode(this._caster.getCell().getCoords(), this._radius, true);
}

/**
 * @class Magic bolt spell
 * @augments RPG.Spells.Projectile
 */
RPG.Spells.MagicBolt = OZ.Class().extend(RPG.Spells.Projectile);
RPG.Spells.MagicBolt.name = "magic bolt";
RPG.Spells.MagicBolt.cost = 8;
RPG.Spells.MagicBolt.damage = new RPG.Misc.RandomValue(4, 1);
RPG.Spells.MagicBolt.prototype.init = function(caster) {
	this.parent(caster);
	this._type = RPG.SPELL_DIRECTION;
	this._range = 5;

	this._baseImage = "magic-bolt";
	this._color = "blueviolet";
}

RPG.Spells.MagicBolt.prototype._fly = function(cell) {
	this.parent(cell);

	var b = cell.getBeing();
	if (b) {
		this._caster.attackMagic(b, this);
	} else if (!cell.visibleThrough()) {
		if (RPG.Game.pc.canSee(cell)) {
			var s = RPG.Misc.format("%The hits %a and disappears.", this, cell.getFeature() || cell);
			RPG.UI.buffer.message(s);
		}
	}
}

/**
 * @class Fireball spell
 * @augments RPG.Spells.Projectile
 */
RPG.Spells.Fireball = OZ.Class().extend(RPG.Spells.Projectile);
RPG.Spells.Fireball.name = "fireball";
RPG.Spells.Fireball.cost = 12;
RPG.Spells.Fireball.damage = new RPG.Misc.RandomValue(5, 3);
RPG.Spells.Fireball.prototype.init = function(caster) {
	this.parent(caster);
	this._type = RPG.SPELL_TARGET;
	this._range = 6;
	this._radius = 2;
	
	this._explosionImage = "fireball-explosion";
	this._baseImage = "fireball";
	this._color = "red"; 
}

RPG.Spells.Fireball.prototype._fly = function(cell) {
	this.parent(cell);

	if (this._flight.index+1 == this._flight.cells.length) {
		this.explode(cell.getCoords(), this._radius, false);
	}
}

RPG.Spells.Fireball.prototype.getRadius = function() {
	return this._radius;
}

RPG.Spells.Fireball.prototype._done = function() {
	RPG.Game.getEngine().unlock();
}