aboutsummaryrefslogtreecommitdiff
path: root/src/crepe/system/ParticleSystem.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/crepe/system/ParticleSystem.cpp')
-rw-r--r--src/crepe/system/ParticleSystem.cpp45
1 files changed, 17 insertions, 28 deletions
diff --git a/src/crepe/system/ParticleSystem.cpp b/src/crepe/system/ParticleSystem.cpp
index 33db52e..7316309 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));
}
}