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- // SuperTux
- // Copyright (C) 2009 Ingo Ruhnke <grumbel@gmail.com>
- //
- // 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 3 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, see <http://www.gnu.org/licenses/>.
- #include "object/ghost_particle_system.hpp"
- #include <algorithm>
- #include <math.h>
- #include "math/random.hpp"
- #include "supertux/globals.hpp"
- #include "video/surface.hpp"
- #include "video/video_system.hpp"
- #include "video/viewport.hpp"
- //FIXME: Sometimes both ghosts have the same image
- // Ghosts don't change their movement pattern - not random.
- GhostParticleSystem::GhostParticleSystem()
- {
- init();
- }
- GhostParticleSystem::GhostParticleSystem(const ReaderMapping& reader) :
- ParticleSystem(reader)
- {
- init();
- }
- GhostParticleSystem::~GhostParticleSystem()
- {
- }
- void
- GhostParticleSystem::init()
- {
- ghosts[0] = Surface::from_file("images/particles/ghost0.png");
- ghosts[1] = Surface::from_file("images/particles/ghost1.png");
- virtual_width = static_cast<float>(SCREEN_WIDTH) * 2.0f;
- // Create two ghosts.
- size_t ghostcount = 2;
- for (size_t i=0; i<ghostcount; ++i) {
- auto particle = std::make_unique<GhostParticle>();
- particle->pos.x = graphicsRandom.randf(virtual_width);
- particle->pos.y = graphicsRandom.randf(static_cast<float>(SCREEN_HEIGHT));
- int size = graphicsRandom.rand(2);
- particle->texture = ghosts[size];
- particle->speed = graphicsRandom.randf(std::max(50.0f, static_cast<float>(size) * 10.0f),
- 180.0f + static_cast<float>(size) * 10.0f);
- particles.push_back(std::move(particle));
- }
- }
- void
- GhostParticleSystem::update(float dt_sec)
- {
- if (!enabled)
- return;
- for (const auto& part : particles) {
- const auto& particle = dynamic_cast<GhostParticle*>(part.get());
- particle->pos.y -= particle->speed * dt_sec;
- particle->pos.x -= particle->speed * dt_sec;
- if (particle->pos.y > static_cast<float>(SCREEN_HEIGHT)) {
- particle->pos.y = fmodf(particle->pos.y , virtual_height);
- particle->pos.x = graphicsRandom.randf(virtual_width);
- }
- }
- }
- /* EOF */
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