added unit test for particles

1 files changed, 36 insertions, 9 deletions

diff --git a/src/crepe/api/ParticleEmitter.h b/src/crepe/api/ParticleEmitter.h
index f931e8c..2cda1bb 100644
--- a/src/crepe/api/ParticleEmitter.h
+++ b/src/crepe/api/ParticleEmitter.h
@@ -11,24 +11,44 @@ class Sprite;
 
 namespace crepe {
 
+
+/**
+ * \brief Data holder for particle emission parameters.
+ *
+ * The ParticleEmitter class stores configuration data for particle properties,
+ * defining the characteristics and boundaries of particle emissions.
+ */
+
 class ParticleEmitter : public Component {
 public:
-	struct ParticleBoundary{
+	/**
+	 * \brief Defines the boundary within which particles are constrained.
+	 *
+	 * This structure specifies the boundary's size and offset, as well as the
+	 * behavior of particles upon reaching the boundary limits.
+	 */
+	struct Boundary{
 		//! boundary width (midpoint is emitter location)
-		double boundary_width = 0.0;
+		double width = 0.0;
 		//! boundary height (midpoint is emitter location)
-		double boundary_height = 0.0;
+		double height = 0.0;
 		//! boundary offset from particle emitter location
-		Vector2 boundary_offset;
+		Vector2 offset;
 		//! reset on exit or stop velocity and set max postion
 		bool reset_on_exit = false;
 	};
 
-	struct ParticleEmitterData{
+	/**
+	 * \brief Holds parameters that control particle emission.
+	 *
+	 * Contains settings for the emitter’s position, particle speed, angle, lifespan,
+	 * boundary, and the sprite used for rendering particles.
+	 */
+	struct Data{
 		//! position of the emitter
 		Vector2 position;
 		//! maximum number of particles
-		uint32_t max_particles = 0;
+		const uint32_t max_particles = 0;
 		//! rate of particle emission per update (Lowest value = 0.001 any lower is ignored)
 		double emission_rate = 0;
 		//! min speed of the particles
@@ -46,17 +66,24 @@ public:
 		//! force over time (physics)
 		Vector2 force_over_time;
 		//! particle boundary
-		ParticleBoundary boundary;
+		Boundary boundary;
 		//! collection of particles
 		std::vector<Particle> particles;
 		//! sprite reference
 		const Sprite* sprite;
 	};	
 public:
-	ParticleEmitter(uint32_t game_object_id, const ParticleEmitterData& data);
+	/**
+	 * \brief Constructs a ParticleEmitter data holder with specified settings.
+	 *
+	 * \param game_object_id  Identifier for the game object using this emitter.
+	 * \param data            Configuration data defining particle properties.
+	 */
+	ParticleEmitter(uint32_t game_object_id, const Data& data);
 	~ParticleEmitter();
 public:
-	ParticleEmitterData data;
+	//! Configuration data for particle emission settings.
+	Data data;
 };
 
 } // namespace crepe