/// <summary>
/// Emitter generator - send emitter for an enabled object to handle
/// </summary>
/// <param name="host">an object that is hosting the emitter</param>
/// <param name="pos">emitter position in pixels</param>
/// <param name="ptype">particle type being generated</param>
/// <param name="random">are particles randomized?</param>
/// <param name="emitter_life_duration">how long should this emitter exist</param>
/// <param name="rate">number of ms between bursts</param>
/// <param name="auto">is generation automatic?</param>
/// <param name="ttype">particle trajectory type</param>
/// <param name="particle_lifetime">how long should the particles exist - in ms?</param>
/// <param name="number_of_particles_in_burst">number of particles generated at the same time</param>
/// <param name="random_color">are colors randomized?</param>
/// <param name="interpolate_color_flag">are colors interpolated?</param>
/// <param name="area_radius">area of generation</param>
public void create_emitter(
IParticleCreating host, // emitter will be created inside this object
Vector2[] pos, // create in these positions (allows creation of multiple emitters in one function call)
particle_type ptype, // defines what shape the particle takes as well as multiple internal properties
bool random, //
int emitter_life_duration, // when is this emitter scheduled for deletion
int rate, // number of milliseconds between particle bursts
bool auto, // requires no manual input to create particles
trajectory_type ttype, // trajectory type - defines particle movement after creation
int particle_lifetime, // particle lifetime
int number_of_particles_in_burst, // number of particles created in the same cycle
bool random_color, // randomizes particle tint
bool interpolate_color_flag, // change from current color to black
int area_radius // all particles in one burst will be created in this radius (use 1 for point creation)
)
{
for (int i = 0; i < pos.Length; i++)
{
Emitter temp = new Emitter(pos[i], ptype, random, emitter_life_duration, particle_lifetime, rate, auto, ttype, number_of_particles_in_burst, random_color, interpolate_color_flag, area_radius); // call Emitter constructor using parameters supplied by Engine
host.Add(temp); // function required by the interface
}
}
/// <summary>
/// Unregister a particle enabled object
/// </summary>
/// <param name="instance">object to unregister - in case of deletion or expiration</param>
public void delete_emitter(IParticleCreating instance) // and all its particles, or just the emitter but keep particles active
{
// remove element from the list when Emitter is no longer needed
emitting_objects.Remove(instance);
}
/// <summary>
/// Remove a particle enabled object from the list of registered emitting objects
/// </summary>
/// <param name="instance">instance of the particle interface implementing class</param>
public void unregister_emitter_enabled_object(IParticleCreating instance)
{
emitting_objects.Remove(instance);
}
/// <summary>
/// Register the object so it's emitters can be updated
/// </summary>
/// <param name="instance">An emitter hosting object</param>
public void register_emitter_enabled_object(IParticleCreating instance)
{
emitting_objects.Add(instance);
}
