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;
}
// The start of the Application
int App::start(const std::vector<CL_String> &args)
{
CL_DisplayWindowDescription win_desc;
win_desc.set_allow_resize(true);
win_desc.set_title("Vertex Buffer Object Example");
win_desc.set_depth_size(16);
win_desc.set_size(CL_Size( 800, 600 ), false);
CL_DisplayWindow window(win_desc);
CL_Slot slot_quit = window.sig_window_close().connect(this, &App::on_window_close);
CL_Slot slot_input_up = (window.get_ic().get_keyboard()).sig_key_up().connect(this, &App::on_input_up);
CL_GraphicContext gc = window.get_gc();
Shader shader(gc);
// Prepare the display
gc.set_map_mode(cl_user_projection);
CL_PolygonRasterizer polygon_rasterizer;
polygon_rasterizer.set_culled(true);
polygon_rasterizer.set_face_cull_mode(cl_cull_back);
polygon_rasterizer.set_front_face(cl_face_side_clockwise);
gc.set_polygon_rasterizer(polygon_rasterizer);
CL_BufferControl buffer_control;
buffer_control.enable_depth_test(true);
buffer_control.set_depth_compare_function(cl_comparefunc_lequal);
buffer_control.enable_depth_write(true);
gc.set_buffer_control(buffer_control);
std::vector<CL_Vec3f> object_positions;
std::vector<CL_Vec3f> object_normals;
std::vector<CL_Vec4f> object_material_ambient;
const int num_cubes = 20000;
object_positions.reserve(num_cubes * 6 * 6); // 6 faces, and 6 vertices per face
object_normals.reserve(num_cubes * 6 * 6);
object_material_ambient.reserve(num_cubes * 6 * 6);
for (int cnt=0; cnt < num_cubes; cnt++)
{
create_cube(object_positions, object_normals, object_material_ambient);
}
CL_VertexArrayBuffer vb_positions(gc, &object_positions[0], sizeof(CL_Vec3f) * object_positions.size());
CL_VertexArrayBuffer vb_normals(gc, &object_normals[0], sizeof(CL_Vec3f) * object_normals.size());
CL_VertexArrayBuffer vb_material_ambient(gc, &object_material_ambient[0], sizeof(CL_Vec4f) * object_material_ambient.size());
// ** Note, at this point "object_positions, object_normals and object_material_ambient"
// ** can be destroyed. But for the purpose of this example, is it kept
CL_Font fps_font(gc, "tahoma", 20);
FramerateCounter frameratecounter;
unsigned int time_last = CL_System::get_time();
float angle = 0.0f;
is_vertex_buffer_on = true;
while (!quit)
{
unsigned int time_now = CL_System::get_time();
float time_diff = (float) (time_now - time_last);
time_last = time_now;
gc.clear(CL_Colorf(0.0f, 0.0f, 0.0f, 1.0f));
gc.clear_depth(1.0f);
gc.set_map_mode(cl_map_2d_upper_left);
CL_String fps = cl_format("%1 fps", frameratecounter.get_framerate());
fps_font.draw_text(gc, gc.get_width() - 100, 30, fps);
CL_String info = cl_format("%1 vertices", (int) object_positions.size());
fps_font.draw_text(gc, 30, 30, info);
fps_font.draw_text(gc, 30, gc.get_height() - 8, "Press any key to toggle the Vertex Buffer option");
if (is_vertex_buffer_on)
{
fps_font.draw_text(gc, 200, 30, "Vertex Buffer = ON");
}
else
{
fps_font.draw_text(gc, 200, 30, "Vertex Buffer = OFF");
}
gc.set_map_mode(cl_user_projection);
CL_Mat4f perp = CL_Mat4f::perspective(45.0f, ((float) gc.get_width()) / ((float) gc.get_height()), 0.1f, 100000.0f);
gc.set_projection(perp);
angle += time_diff / 20.0f;
if (angle >= 360.0f)
angle -= 360.0f;
gc.push_modelview();
gc.set_modelview(CL_Mat4f::identity());
gc.mult_scale(1.0f,1.0f, -1.0f); // So +'ve Z goes into the screen
gc.mult_translate(0.0f, 0.0f, 800.0f);
gc.mult_rotate(CL_Angle(angle*2.0f, cl_degrees), 0.0f, 1.0f, 0.0f, false);
gc.mult_rotate(CL_Angle(angle, cl_degrees), 1.0f, 0.0f, 0.0f, false);
shader.Set(gc);
shader.Use(gc);
CL_PrimitivesArray prim_array(gc);
if (is_vertex_buffer_on)
{
prim_array.set_attributes(0, vb_positions, 3, cl_type_float, (void *) 0);
prim_array.set_attributes(1, vb_normals, 3, cl_type_float, (void *) 0);
prim_array.set_attributes(2, vb_material_ambient, 4, cl_type_float, (void *) 0);
}
else
{
prim_array.set_attributes(0, &object_positions[0]);
prim_array.set_attributes(1, &object_normals[0]);
prim_array.set_attributes(2, &object_material_ambient[0]);
}
gc.draw_primitives(cl_triangles, object_positions.size(), prim_array);
gc.pop_modelview();
gc.reset_program_object();
window.flip(0);
frameratecounter.frame_shown();
CL_KeepAlive::process();
}
return 0;
}
int DemoShooting::run(clan::DisplayWindow &window)
{
clan::SlotContainer cc;
window.set_title("LinearParticle Example - Shooting ");
cc.connect(window.sig_window_close(), clan::bind_member(this, &DemoShooting::on_window_close));
clan::Canvas canvas(window);
cc.connect(window.get_ic().get_keyboard().sig_key_up(), clan::bind_member(this, &DemoShooting::on_key_up));
// initialize LinearParticle
L_ParticleSystem::init();
// create surface to be used for particle and set the alignment
clan::Sprite surface(canvas,"Resources/star.png");
surface.set_alignment(clan::origin_center);
motion_ctrl.set_1d_acceleration(-0.0003);
L_Particle particle(&surface,3000);
particle.set_color(L_Color(255,110,60,255));
particle.coloring2(L_Color(255,110,60,255),L_Color(0,200,100,255),0.6);
particle.rotating2(L_2PI);
particle.set_motion_controller(&motion_ctrl);
L_Vector shooting_vector;
shooting_vector.set2( 0.4, L_DEGREE_TO_RADIAN(-90) );
effect = new L_ShootingEffect(460,360,shooting_vector,16,4);
effect->add(&particle);
effect->set_width_interval(100);
effect->set_angle_interval(L_DEGREE_TO_RADIAN(45));
effect->set_life_distortion(600);
effect->set_size_distortion(0.4f);
effect->initialize();
char str[32];
quit = false;
show_menu = true;
clan::Font font(canvas, "Arial", 16 );
FramerateCounter frameratecounter;
clan::ubyte64 last_time = clan::System::get_time();
while(!quit)
{
canvas.clear();
clan::ubyte64 current_time = clan::System::get_time();
int time_run = current_time - last_time;
last_time = current_time;
/* the maximum time step is set to 50milisecs to avoid artifacts
and errors caused by low frame rate to be less noticeable. */
while( time_run > 50 )
{
run_a_step(50);
time_run -= 50;
}
if( time_run > 0 )
run_a_step(time_run);
L_DrawParticle(canvas, effect);
if( show_menu )
{
frameratecounter.show_fps(canvas, font);
sprintf(str,"#Particle : %d", effect->get_particle_num());
font.draw_text(canvas,10,30,str);
font.draw_text(canvas,10,425,"F1 : hide/show menu");
font.draw_text(canvas,10,440,"Space : trigger random sleep");
}
window.flip(0); // Set to "1" to lock to screen refresh rate
frameratecounter.frame_shown();
clan::KeepAlive::process(0);
}
delete effect;
// deinitialize LinearParticle
L_ParticleSystem::deinit();
return 0;
}
int DemoMSmall::run(clan::DisplayWindow &window)
{
clan::SlotContainer cc;
window.set_title("LinearParticle Example - MSmall ");
cc.connect(window.sig_window_close(), clan::bind_member(this, &DemoMSmall::on_window_close));
clan::Canvas canvas(window);
cc.connect(window.get_ic().get_keyboard().sig_key_up(), clan::bind_member(this, &DemoMSmall::on_key_up));
// initialize LinearParticle
L_ParticleSystem::init();
// create surface to be used for particle and set the alignment
clan::Sprite surface(canvas, "Resources/small.png");
surface.set_alignment(clan::origin_center);
motion_ctrl.set_speed_limit(0.1); // set max speed of particle
motion_ctrl.set_1d_acceleration(-0.0003); // set deceleration
// create sample of particle
L_Particle particle(&surface,2000);
particle.set_color(L_Color(255,110,60,255));
particle.coloring2(L_Color(255,110,60,255),L_Color(0,200,100,255),0.6);
particle.set_motion_controller(&motion_ctrl); // assign motion cotroller
// create explosion effect
effect = new L_ExplosionEffect(320,240,16,10,12,0.1);
effect->add(&particle);
// apply random life distortion for each emitted particle
effect->set_life_distortion(700);
effect->initialize();
char str[32];
quit = false;
show_menu = true;
clan::Font font(canvas, "Arial", 16 );
FramerateCounter frameratecounter;
clan::ubyte64 last_time = clan::System::get_time();
clan::InputDevice &keyboard = window.get_ic().get_keyboard();
while(!quit)
{
canvas.clear();
static L_REAL x_pos = 320;
static L_REAL y_pos = 240;
L_REAL x_vel = 0;
L_REAL y_vel = 0;
if( keyboard.get_keycode(clan::keycode_up) )
y_vel = -0.2;
else if( keyboard.get_keycode(clan::keycode_down))
y_vel = 0.2;
if( keyboard.get_keycode(clan::keycode_left))
x_vel = -0.2;
else if( keyboard.get_keycode(clan::keycode_right))
x_vel = 0.2;
L_Vector vel;
vel.set( x_vel, y_vel );
clan::ubyte64 current_time = clan::System::get_time();
int time_run = current_time - last_time;
last_time = current_time;
x_pos += x_vel*time_run;
y_pos += y_vel*time_run;
effect->trigger();
effect->set_velocity(vel);
effect->run(time_run);
effect->set_position(x_pos, y_pos);
L_DrawParticle(canvas, effect);
if( show_menu )
{
frameratecounter.show_fps(canvas, font);
sprintf(str,"#Particle : %d", effect->get_particle_num());
font.draw_text(canvas,10,30,str);
font.draw_text(canvas,10,410,"F1 : hide/show menu");
font.draw_text(canvas,10,425,"Space : trigger random sleep");
font.draw_text(canvas,10,440,"Arrow keys : move the effect");
}
window.flip(0); // Set to "1" to lock to screen refresh rate
frameratecounter.frame_shown();
clan::KeepAlive::process(0);
}
delete effect;
// deinitialize LinearParticle
L_ParticleSystem::deinit();
return 0;
}
