diff options
Diffstat (limited to 'src/crepe/system/ParticleSystem.cpp')
-rw-r--r-- | src/crepe/system/ParticleSystem.cpp | 45 |
1 files changed, 17 insertions, 28 deletions
diff --git a/src/crepe/system/ParticleSystem.cpp b/src/crepe/system/ParticleSystem.cpp index e7a3bec..92e7d3f 100644 --- a/src/crepe/system/ParticleSystem.cpp +++ b/src/crepe/system/ParticleSystem.cpp @@ -20,13 +20,10 @@ void ParticleSystem::update() { for (ParticleEmitter & emitter : emitters) { // Get transform linked to emitter const Transform & transform - = mgr.get_components_by_id<Transform>(emitter.game_object_id) - .front() - .get(); + = mgr.get_components_by_id<Transform>(emitter.game_object_id).front().get(); // Emit particles based on emission_rate - int updates - = calculate_update(this->update_count, emitter.data.emission_rate); + int updates = calculate_update(this->update_count, emitter.data.emission_rate); for (size_t i = 0; i < updates; i++) { emit_particle(emitter, transform); } @@ -45,8 +42,7 @@ void ParticleSystem::update() { this->update_count = (this->update_count + 1) % this->MAX_UPDATE_COUNT; } -void ParticleSystem::emit_particle(ParticleEmitter & emitter, - const Transform & transform) { +void ParticleSystem::emit_particle(ParticleEmitter & emitter, const Transform & transform) { constexpr double DEG_TO_RAD = M_PI / 180.0; Vector2 initial_position = emitter.data.position + transform.position; @@ -57,13 +53,13 @@ void ParticleSystem::emit_particle(ParticleEmitter & emitter, = generate_random_speed(emitter.data.min_speed, emitter.data.max_speed); double angle_radians = random_angle * DEG_TO_RAD; - Vector2 velocity = {random_speed * std::cos(angle_radians), - random_speed * std::sin(angle_radians)}; + Vector2 velocity + = {random_speed * std::cos(angle_radians), random_speed * std::sin(angle_radians)}; for (Particle & particle : emitter.data.particles) { if (!particle.active) { - particle.reset(emitter.data.end_lifespan, initial_position, - velocity, random_angle); + particle.reset(emitter.data.end_lifespan, initial_position, velocity, + random_angle); break; } } @@ -81,10 +77,8 @@ int ParticleSystem::calculate_update(int count, double emission) const { return static_cast<int>(emission); } -void ParticleSystem::check_bounds(ParticleEmitter & emitter, - const Transform & transform) { - Vector2 offset = emitter.data.boundary.offset + transform.position - + emitter.data.position; +void ParticleSystem::check_bounds(ParticleEmitter & emitter, const Transform & transform) { + Vector2 offset = emitter.data.boundary.offset + transform.position + emitter.data.position; double half_width = emitter.data.boundary.width / 2.0; double half_height = emitter.data.boundary.height / 2.0; @@ -95,8 +89,8 @@ void ParticleSystem::check_bounds(ParticleEmitter & emitter, for (Particle & particle : emitter.data.particles) { const Vector2 & position = particle.position; - bool within_bounds = (position.x >= LEFT && position.x <= RIGHT - && position.y >= TOP && position.y <= BOTTOM); + bool within_bounds = (position.x >= LEFT && position.x <= RIGHT && position.y >= TOP + && position.y <= BOTTOM); if (!within_bounds) { if (emitter.data.boundary.reset_on_exit) { @@ -112,30 +106,25 @@ void ParticleSystem::check_bounds(ParticleEmitter & emitter, } } -double ParticleSystem::generate_random_angle(double min_angle, - double max_angle) const { +double ParticleSystem::generate_random_angle(double min_angle, double max_angle) const { if (min_angle == max_angle) { return min_angle; } else if (min_angle < max_angle) { return min_angle - + static_cast<double>(std::rand() - % static_cast<int>(max_angle - min_angle)); + + static_cast<double>(std::rand() % static_cast<int>(max_angle - min_angle)); } else { double angle_offset = (360 - min_angle) + max_angle; - double random_angle = min_angle - + static_cast<double>( - std::rand() % static_cast<int>(angle_offset)); + double random_angle + = min_angle + static_cast<double>(std::rand() % static_cast<int>(angle_offset)); return (random_angle >= 360) ? random_angle - 360 : random_angle; } } -double ParticleSystem::generate_random_speed(double min_speed, - double max_speed) const { +double ParticleSystem::generate_random_speed(double min_speed, double max_speed) const { if (min_speed == max_speed) { return min_speed; } else { return min_speed - + static_cast<double>(std::rand() - % static_cast<int>(max_speed - min_speed)); + + static_cast<double>(std::rand() % static_cast<int>(max_speed - min_speed)); } } |