diff options
Diffstat (limited to 'src/crepe/ParticleSystem.cpp')
-rw-r--r-- | src/crepe/ParticleSystem.cpp | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/src/crepe/ParticleSystem.cpp b/src/crepe/ParticleSystem.cpp deleted file mode 100644 index af6c550..0000000 --- a/src/crepe/ParticleSystem.cpp +++ /dev/null @@ -1,62 +0,0 @@ -#include <cmath> -#include <ctime> - -#include "api/ParticleEmitter.h" - -#include "ComponentManager.h" -#include "ParticleSystem.h" - -using namespace crepe; - -ParticleSystem::ParticleSystem() : elapsed_time(0.0f) {} - -void ParticleSystem::update() { - ComponentManager & mgr = ComponentManager::get_instance(); - std::vector<std::reference_wrapper<ParticleEmitter>> emitters - = mgr.get_components_by_type<ParticleEmitter>(); - float delta_time = 0.10; - for (ParticleEmitter & emitter : emitters) { - float update_amount = 1 / static_cast<float>(emitter.emission_rate); - for (float i = 0; i < delta_time; i += update_amount) { - emit_particle(emitter); - } - for (size_t j = 0; j < emitter.particles.size(); j++) { - if (emitter.particles[j].active) { - emitter.particles[j].update(delta_time); - } - } - } -} - -void ParticleSystem::emit_particle(ParticleEmitter & emitter) { - Position initial_position = {emitter.position.x, emitter.position.y}; - float random_angle = 0.0f; - if (emitter.max_angle < emitter.min_angle) { - random_angle = ((emitter.min_angle - + (std::rand() - % (static_cast<uint32_t>(emitter.max_angle + 360 - - emitter.min_angle + 1)))) - % 360); - } else { - random_angle = emitter.min_angle - + (std::rand() - % (static_cast<uint32_t>(emitter.max_angle - - emitter.min_angle + 1))); - } - float angle_in_radians = random_angle * (M_PI / 180.0f); - float random_speed_offset = (static_cast<float>(std::rand()) / RAND_MAX) - * (2 * emitter.speed_offset) - - emitter.speed_offset; - float velocity_x - = (emitter.speed + random_speed_offset) * std::cos(angle_in_radians); - float velocity_y - = (emitter.speed + random_speed_offset) * std::sin(angle_in_radians); - Position initial_velocity = {velocity_x, velocity_y}; - for (size_t i = 0; i < emitter.particles.size(); i++) { - if (!emitter.particles[i].active) { - emitter.particles[i].reset(emitter.end_lifespan, initial_position, - initial_velocity); - break; - } - } -} |