static int dropper_post(int rc, void *packet, int len, int flags)
{
if (flags & DF_IN)
return rc;
return dropper(rc, packet, len, flags);
}
int DemoSimple::run(CL_DisplayWindow &window)
{
quit = false;
// Set the window
window.set_title("LinearParticle Example - Simple ");
// Connect the Window close event
CL_Slot slot_quit = window.sig_window_close().connect(this, &DemoSimple::on_window_close);
// Connect a keyboard handler to on_key_up()
CL_Slot slot_input_up = (window.get_ic().get_keyboard()).sig_key_up().connect(this, &DemoSimple::on_input_up);
// Get the graphic context
CL_GraphicContext gc = window.get_gc();
// initialize LinearParticle
L_ParticleSystem::init();
// create surface to be used for particle and set the alignment
CL_Sprite surface(gc,"Resources/light16p.png");
surface.set_alignment(origin_center);
// create a sample of particle with life of 5000
L_Particle particle(&surface,5000);
// create dropping effect with period of 16
L_DroppingEffect dropper(0,0,16);
// add the particle to dropper effect
dropper.add(&particle);
// initialize particle effect
dropper.initialize();
float x_pos = 320;
float y_pos = 240;
float x_vel = 3.0f;
float y_vel = 3.0f;
CL_Font font(gc, "tahoma", 16 );
FramerateCounter frameratecounter;
// Run until someone presses escape
while (!quit)
{
gc.clear();
x_pos += x_vel;
y_pos += y_vel;
if( x_pos > 640 || x_pos < 0 )
x_vel = -x_vel;
if( y_pos > 480 || y_pos < 0 )
y_vel = -y_vel;
dropper.set_position(x_pos, y_pos);
dropper.trigger();
/* pass frame time to L_ParticleEffect::run(int) for time based system,
a constant number would be a reference time unit for frame based system. */
dropper.run(16);
// draw dropping effect
L_DrawParticle(gc,dropper);
frameratecounter.show_fps(gc, font);
window.flip(0); // Set to "1" to lock to screen refresh rate
frameratecounter.frame_shown();
CL_KeepAlive::process(0);
}
// deinitialize LinearParticle
L_ParticleSystem::deinit();
return 0;
}
