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- // SuperTux
- //
- // 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/rublight.hpp"
- #include "object/explosion.hpp"
- #include "badguy/walking_badguy.hpp"
- #include "object/player.hpp"
- #include "sprite/sprite.hpp"
- #include "sprite/sprite_manager.hpp"
- #include "supertux/constants.hpp"
- #include "supertux/flip_level_transformer.hpp"
- #include "video/color.hpp"
- #include "util/reader_mapping.hpp"
- RubLight::RubLight(const ReaderMapping& mapping) :
- MovingSprite(mapping, "images/objects/rublight/rublight.sprite", LAYER_TILES,
- COLGROUP_STATIC),
- state(STATE_DARK),
- stored_energy(0),
- light(SpriteManager::current()->create(
- "images/objects/lightmap_light/lightmap_light.sprite")),
- color(1.f, 1.f, 1.f),
- fading_speed(5.0f),
- strength_multiplier(1.0f)
- {
- set_action("inactive");
- std::vector<float> vColor;
- if (mapping.get("color", vColor))
- color = Color(vColor);
- mapping.get("fading_speed", fading_speed);
- mapping.get("strength_multiplier", strength_multiplier);
- }
- ObjectSettings
- RubLight::get_settings()
- {
- ObjectSettings result = MovingSprite::get_settings();
- // The object settings and their default values shown in the Editor
- result.add_color(_("Color"), &color, "color", Color(1.0f, 0.5f, 0.3f));
- result.add_float(_("Fading Speed"), &fading_speed, "fading_speed", 5.0f);
- result.add_float(_("Glowing Strength"), &strength_multiplier,
- "strength_multiplier", 1.0f);
- result.reorder({"color", "fading_speed", "x", "y"});
- return result;
- }
- HitResponse
- RubLight::collision(GameObject& other, const CollisionHit&)
- {
- Player* player = dynamic_cast<Player*>(&other);
- if (player != nullptr &&
- player->get_bbox().get_bottom() < m_col.m_bbox.get_top() + SHIFT_DELTA) {
- Vector vel_player = player->get_velocity();
- float vel_horiz = fabsf(vel_player.x) / 32.0f;
- if (player->is_skidding())
- rub(vel_horiz * 0.3f);
- else
- rub(vel_horiz * 0.01f);
- return FORCE_MOVE;
- }
- if (dynamic_cast<Explosion*> (&other)) {
- rub(1.0f);
- return FORCE_MOVE;
- }
- WalkingBadguy* obj = dynamic_cast<WalkingBadguy*>(&other);
- if (obj != nullptr) {
- float vel_horiz = fabsf(obj->get_velocity_x()) / 32.0f;
- rub(vel_horiz * 0.01f);
- }
- return FORCE_MOVE;
- }
- void RubLight::rub(float strength)
- {
- if (strength <= 0)
- return;
- set_action("active");
- strength *= strength_multiplier;
- stored_energy = std::max<float>(stored_energy, strength);
- if (state == STATE_DARK)
- state = STATE_FADING;
- }
- void
- RubLight::update(float dt_sec)
- {
- if (m_sprite->get_action() == "active" && m_sprite->animation_done())
- {
- set_action("inactive");
- }
- switch (state) {
- case STATE_DARK:
- set_action("inactive");
- break;
- case STATE_FADING:
- // Exponential fading
- stored_energy *= expf(-dt_sec * fading_speed);
- if (get_brightness() < 0.000001f) {
- stored_energy = 0;
- state = STATE_DARK;
- }
- break;
- }
- }
- float
- RubLight::get_brightness() const
- {
- return stored_energy / (1.0f + stored_energy);
- }
- void
- RubLight::draw(DrawingContext& context)
- {
- if (state == STATE_FADING) {
- float brightness = get_brightness();
- Color col = color.multiply_linearly(brightness);
- light->set_color(col);
- light->set_blend(Blend::ADD);
- light->draw(context.light(), get_pos(), m_layer);
- }
- m_sprite->draw(context.color(), get_pos(), m_layer, m_flip);
- }
- void
- RubLight::on_flip(float height)
- {
- MovingSprite::on_flip(height);
- FlipLevelTransformer::transform_flip(m_flip);
- }
- /* EOF */
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