4 // Copyright (C) 2006 Matthias Braun <matze@braunis.de>
6 // This program is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU General Public License
8 // as published by the Free Software Foundation; either version 2
9 // of the License, or (at your option) any later version.
11 // This program is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License
17 // along with this program; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 #include "flyingsnowball.hpp"
25 #include "random_generator.hpp"
26 #include "object/sprite_particle.hpp"
28 static const float FLYTIME = 1.0;
29 static const float FLYSPEED = 100.0;
32 const float PUFF_PROBABILITY = 0.1; /**< chanche of puffs being spawned in the current cycle */
33 const float PUFF_INTERVAL_MIN = 0.1; /**< spawn new puff of smoke at most that often */
34 const float PUFF_INTERVAL_MAX = 1.1; /**< spawn new puff of smoke at least that often */
37 FlyingSnowBall::FlyingSnowBall(const lisp::Lisp& reader)
39 reader.get("x", start_position.x);
40 reader.get("y", start_position.y);
41 sprite = sprite_manager->create("images/creatures/flying_snowball/flying_snowball.sprite");
42 bbox.set_size(sprite->get_current_hitbox_width(), sprite->get_current_hitbox_height());
43 physic.enable_gravity(false);
46 FlyingSnowBall::FlyingSnowBall(float pos_x, float pos_y)
48 start_position.x = pos_x;
49 start_position.y = pos_y;
50 sprite = sprite_manager->create("images/creatures/flying_snowball/flying_snowball.sprite");
51 bbox.set_size(sprite->get_current_hitbox_width(), sprite->get_current_hitbox_height());
52 physic.enable_gravity(false);
56 FlyingSnowBall::write(lisp::Writer& writer)
58 writer.start_list("flyingsnowball");
60 writer.write_float("x", start_position.x);
61 writer.write_float("y", start_position.y);
63 writer.end_list("flyingsnowball");
67 FlyingSnowBall::activate()
69 sprite->set_action(dir == LEFT ? "left" : "right");
71 physic.set_velocity_y(FLYSPEED);
72 timer.start(FLYTIME/2);
73 puff_timer.start(systemRandom.randf(PUFF_INTERVAL_MIN, PUFF_INTERVAL_MAX));
77 FlyingSnowBall::collision_squished(Player& player)
79 sprite->set_action(dir == LEFT ? "squished-left" : "squished-right");
80 kill_squished(player);
85 FlyingSnowBall::collision_solid(GameObject& , const CollisionHit& hit)
87 if(fabsf(hit.normal.y) > .5) { // hit floor or roof?
88 physic.set_velocity_y(0);
95 FlyingSnowBall::active_update(float elapsed_time)
100 physic.set_velocity_y(-FLYSPEED);
105 } else if(mode == FLY_DOWN) {
107 physic.set_velocity_y(FLYSPEED);
109 // roll a dice whether to start puffing
110 if (systemRandom.randf(0, 1) < PUFF_PROBABILITY) {
111 puff_timer.start(systemRandom.randf(PUFF_INTERVAL_MIN, PUFF_INTERVAL_MAX));
115 timer.start(FLYTIME);
117 movement=physic.get_movement(elapsed_time);
119 Player* player = this->get_nearest_player();
121 dir = (player->get_pos().x > get_pos().x) ? RIGHT : LEFT;
122 sprite->set_action(dir == LEFT ? "left" : "right");
126 if (puff_timer.check()) {
127 Vector ppos = bbox.get_middle();
128 Vector pspeed = Vector(systemRandom.randf(-10, 10), 150);
129 Vector paccel = Vector(0,0);
130 Sector::current()->add_object(new SpriteParticle("images/objects/particles/smoke.sprite", ppos, pspeed, paccel, LAYER_OBJECTS-1));
131 puff_timer.start(systemRandom.randf(PUFF_INTERVAL_MIN, PUFF_INTERVAL_MAX));
135 IMPLEMENT_FACTORY(FlyingSnowBall, "flyingsnowball")