Body Collision::create_outline_body(PhysicsWorld &phys_world)
{
PhysicsContext pc = phys_world.get_pc();
BodyDescription box_desc(phys_world);
box_desc.set_type(body_dynamic);
Body box(pc, box_desc);
//Setup box fixture description.
//
//Outlines shouldn't be too complex. Keep it Under 100 points.
//If it has more, think about splitting it into couple smaller groups.
//Then create separate fixtures for the same body.
CollisionOutline outline("test_outline.out");
ChainShape outline_shape(phys_world);
outline_shape.create_loop(outline);
FixtureDescription fixture_desc2(phys_world);
fixture_desc2.set_shape(outline_shape);
fixture_desc2.set_restitution(0.6f);
fixture_desc2.set_friction(0.001f);
fixture_desc2.set_density(50.0f);
Fixture box_fixture(pc, box,fixture_desc2);
return box;
}
Body Joints::create_box_body(PhysicsWorld &phys_world)
{
//Get the Physics Context
PhysicsContext pc = phys_world.get_pc();
BodyDescription box_desc(phys_world);
box_desc.set_type(body_dynamic);
Body box(pc, box_desc);
//Setup box fixture description
PolygonShape box_shape(phys_world);
box_shape.set_as_box(20.0f,20.0f);
FixtureDescription fixture_desc2(phys_world);
fixture_desc2.set_shape(box_shape);
fixture_desc2.set_restitution(0.6f);
fixture_desc2.set_friction(0.001f);
fixture_desc2.set_density(50.0f);
Fixture box_fixture(pc, box,fixture_desc2);
return box;
}
// The start of the Application
int Raycasting::start(const std::vector<std::string> &args)
{
//Remove the need to send physic world to every object. Instead send just the description.
//Fix having two fixtures working weirdly.
quit = false;
int window_x_size = 640;
int window_y_size = 480;
// Set the window
DisplayWindowDescription desc;
desc.set_title("ClanLib Raycasting Example");
desc.set_size(Size(window_x_size, window_y_size), true);
desc.set_allow_resize(false);
DisplayWindow window(desc);
// Connect the Window close event
Slot slot_quit = window.sig_window_close().connect(this, &Raycasting::on_window_close);
// Connect a keyboard handler to on_key_up()
Slot slot_input_up = (window.get_ic().get_keyboard()).sig_key_up().connect(this, &Raycasting::on_input_up);
// Create the canvas
Canvas canvas(window);
//Setup physic world
PhysicsWorldDescription phys_desc;
phys_desc.set_gravity(0.0f,10.0f);
phys_desc.set_sleep(true);
phys_desc.set_physic_scale(100);
phys_desc.set_timestep(1.0f/200.0f);
PhysicsWorld phys_world(phys_desc);
//Get the Physics Context
PhysicsContext pc = phys_world.get_pc();
//Setup ground body
BodyDescription ground_desc(phys_world);
ground_desc.set_position(Vec2f((float)window_x_size/2.0f,(float)window_y_size));
ground_desc.set_type(body_static);
Body ground(pc, ground_desc);
//Setup ground fixture
PolygonShape ground_shape(phys_world);
ground_shape.set_as_box((float)window_x_size/2,20.0f);
FixtureDescription fixture_desc(phys_world);
fixture_desc.set_shape(ground_shape);
Fixture ground_fixture(pc, ground, fixture_desc);
//Setup box body
BodyDescription box_desc(phys_world);
box_desc.set_position(Vec2f(10.0f,10.0f));
box_desc.set_type(body_dynamic);
box_desc.set_linear_velocity(Vec2f(100.0f,0.0f));
Body box(pc, box_desc);
box_desc.set_position(Vec2f((float)window_x_size-50.0f,100.0f));
box_desc.set_linear_velocity(Vec2f(-80.0f,0.0f));
Body box2(pc, box_desc);
//Setup box fixture
PolygonShape box_shape(phys_world);
box_shape.set_as_box(30.0f, 30.0f);
FixtureDescription fixture_desc2(phys_world);
fixture_desc2.set_shape(box_shape);
fixture_desc2.set_restitution(0.6f);
fixture_desc2.set_friction(0.0005f);
Fixture box_fixture(pc, box, fixture_desc2);
Fixture box_fixture2(pc, box2, fixture_desc2);
Vec2f ground_pos = ground.get_position();
unsigned int last_time = System::get_time();
//Setup debug draw.
PhysicsDebugDraw debug_draw(phys_world);
debug_draw.set_flags(f_shape|f_aabb);
GraphicContext gc = canvas.get_gc();
PhysicsQueryAssistant qa = phys_world.get_qa();
clan::Font font(canvas, "Tahoma", 12);
// Set raycast points
Pointf p1(300,500);
Pointf p2(100,100);
// Set query rect;
Rectf rect1(400.0f, 380.0f, Sizef(50.0f,50.0f));
// Run until someone presses escape
while (!quit)
{
unsigned int current_time = System::get_time();
float time_delta_ms = static_cast<float> (current_time - last_time);
last_time = current_time;
canvas.clear();
//Raycast
font.draw_text(canvas, 10,20, "Raycasting...");
qa.raycast_first(p1, p2);
if(qa.has_query_result())
{
font.draw_text(canvas, 100,20, "Found object !");
canvas.draw_line(p1,p2, Colorf::green);
}
else canvas.draw_line(p1, p2, Colorf::red);
//Raycast
//Query
font.draw_text(canvas, 10,35, "Querying...");
qa.query_any(rect1);
if(qa.has_query_result())
{
font.draw_text(canvas, 100,35, "Found object !");
canvas.draw_box(rect1, Colorf::green);
}
else canvas.draw_box(rect1, Colorf::red);
//Query
phys_world.step();
debug_draw.draw(canvas);
canvas.flush();
window.flip(1);
// This call processes user input and other events
KeepAlive::process(0);
System::sleep(10);
}
return 0;
}