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/* Battle Tanks Game
* Copyright (C) 2006-2009 Battle Tanks team
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
* Additional rights can be granted beyond the GNU General Public License
* on the terms provided in the Exception. If you modify this file,
* you may extend this exception to your version of the file,
* but you are not obligated to do so. If you do not wish to provide this
* exception without modification, you must delete this exception statement
* from your version and license this file solely under the GPL without exception.
*/
#include "object.h"
#include "config.h"
#include "registrar.h"
#include "ai/targets.h"
class Cannon : public Object {
public:
Cannon(const int dir) : Object("cannon"), _fire(false), _reaction(true) {
set_direction(dir);
}
virtual Object* clone() const { return new Cannon(*this); }
virtual void calculate(const float dt);
virtual void tick(const float dt);
virtual void emit(const std::string &event, Object * emitter);
virtual void on_spawn();
virtual void serialize(mrt::Serializator &s) const {
Object::serialize(s);
_fire.serialize(s);
_reaction.serialize(s);
}
virtual void deserialize(const mrt::Serializator &s) {
Object::deserialize(s);
_fire.deserialize(s);
_reaction.deserialize(s);
}
private:
Alarm _fire, _reaction;
};
void Cannon::calculate(const float dt) {
if (!_reaction.tick(dt))
return;
static float range = getWeaponRange("cannon-bullet");
v2<float> pos, vel;
if (get_nearest(_variants.has("trainophobic")? ai::Targets->infantry_and_train: ai::Targets->infantry, range, pos, vel, true)) {
pos.normalize();
set_direction(pos.get_direction(get_directions_number()) - 1);
_direction = pos;
_state.fire = true;
} else _state.fire = false;
}
void Cannon::tick(const float dt) {
Object::tick(dt);
if (get_state() == "real-fire") {
cancel();
spawn("cannon-bullet", "cannon-bullet", v2<float>(), _direction);
}
bool can_fire = _fire.tick(dt);
if (_state.fire && can_fire) {
_fire.reset();
if (get_state() == "hold") {
cancel_all();
play("fire", false);
play("real-fire", true);
play("after-fire", false);
play("hold", true);
}
}
}
void Cannon::emit(const std::string &event, Object * emitter) {
if (event == "death") {
spawn("corpse", "dead-" + registered_name);
}
Object::emit(event, emitter);
}
void Cannon::on_spawn() {
GET_CONFIG_VALUE("objects.cannon.fire-rate", float, fr, 2);
_fire.set(fr);
GET_CONFIG_VALUE("objects.cannon.reaction-time", float, rt, 0.105);
_reaction.set(rt);
play("hold", true);
}
REGISTER_OBJECT("cannon", Cannon, (6));
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