Merge branch 'master' into poc/audio-miniaudio

1 files changed, 37 insertions, 0 deletions

diff --git a/src/crepe/api/ParticleEmitter.cpp b/src/crepe/api/ParticleEmitter.cpp
new file mode 100644
index 0000000..0b3a9ee
--- /dev/null
+++ b/src/crepe/api/ParticleEmitter.cpp
@@ -0,0 +1,37 @@
+#include <ctime>
+#include <iostream>
+
+#include "Particle.h"
+#include "ParticleEmitter.h"
+
+using namespace crepe;
+
+ParticleEmitter::ParticleEmitter(uint32_t game_object_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(game_object_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);
+	}
+}