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#include <ctime>
#include <iostream>
#include "Particle.h"
#include "ParticleEmitter.h"
using namespace crepe;
ParticleEmitter::ParticleEmitter(game_object_id_t id, uint32_t max_particles,
uint32_t emission_rate, uint32_t speed,
uint32_t speed_offset, uint32_t angle,
uint32_t angleOffset, float begin_lifespan,
float end_lifespan)
: Component(id), max_particles(max_particles), emission_rate(emission_rate),
speed(speed), speed_offset(speed_offset), position{0, 0},
begin_lifespan(begin_lifespan), end_lifespan(end_lifespan) {
std::srand(
static_cast<uint32_t>(std::time(nullptr))); // initialize random seed
std::cout << "Create emitter" << std::endl;
// FIXME: Why do these expressions start with `360 +`, only to be `% 360`'d
// right after? This does not make any sense to me.
min_angle = (360 + angle - (angleOffset % 360)) % 360;
max_angle = (360 + angle + (angleOffset % 360)) % 360;
position.x = 400; // FIXME: what are these magic values?
position.y = 400;
for (size_t i = 0; i < max_particles; i++) {
this->particles.emplace_back();
}
}
ParticleEmitter::~ParticleEmitter() {
std::vector<Particle>::iterator it = this->particles.begin();
while (it != this->particles.end()) {
it = this->particles.erase(it);
}
}
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