+
−use glutin::{
+
−    dpi, ContextTrait, DeviceEvent, ElementState, Event, EventsLoop, GlProfile, GlRequest,
+
−    MouseButton, MouseScrollDelta, WindowEvent, WindowedContext,
+
−};
+
−
+
−use hedgewars_engine::instance::EngineInstance;
+
−
+
−use integral_geometry::Point;
+
−use std::time::Duration;
+
−
+
−fn init(event_loop: &EventsLoop, size: dpi::LogicalSize) -> WindowedContext {
+
−    use glutin::{ContextBuilder, WindowBuilder};
+
−
+
−    let window = WindowBuilder::new()
+
−        .with_title("hwengine")
+
−        .with_dimensions(size);
+
−
+
−    let cxt = ContextBuilder::new()
+
−        .with_gl(GlRequest::Latest)
+
−        .with_gl_profile(GlProfile::Core)
+
−        .build_windowed(window, &event_loop)
+
−        .ok()
+
−        .unwrap();
+
−
+
−    unsafe {
+
−        cxt.make_current().unwrap();
+
−        gl::load_with(|ptr| cxt.get_proc_address(ptr) as *const _);
+
−
+
−        if let Some(sz) = cxt.get_inner_size() {
+
−            let phys = sz.to_physical(cxt.get_hidpi_factor());
+
−
+
−            gl::Viewport(0, 0, phys.width as i32, phys.height as i32);
+
−        }
+
−    }
+
−
+
−    cxt
+
−}
+
−
+
−fn main() {
+
−    let mut event_loop = EventsLoop::new();
+
−    let (w, h) = (1024.0, 768.0);
+
−    let window = init(&event_loop, dpi::LogicalSize::new(w, h));
+
−
+
−    let mut engine = EngineInstance::new();
+
−    engine.world.create_renderer(w as u16, h as u16);
+
−
+
−    let mut dragging = false;
+
−
+
−    use std::time::Instant;
+
−
+
−    let mut now = Instant::now();
+
−    let mut update = Instant::now();
+
−
+
−    let mut is_running = true;
+
−    while is_running {
+
−        let curr = Instant::now();
+
−        let delta = curr - now;
+
−        now = curr;
+
−        let ms = delta.as_secs() as f64 * 1000.0 + delta.subsec_millis() as f64;
+
−        window.set_title(&format!("hwengine {:.3}ms", ms));
+
−
+
−        if update.elapsed() > Duration::from_millis(10) {
+
−            update = curr;
+
−            engine.world.step()
+
−        }
+
−
+
−        event_loop.poll_events(|event| match event {
+
−            Event::WindowEvent { event, .. } => match event {
+
−                WindowEvent::CloseRequested => {
+
−                    is_running = false;
+
−                }
+
−                WindowEvent::MouseInput { button, state, .. } => {
+
−                    if let MouseButton::Right = button {
+
−                        dragging = state == ElementState::Pressed;
+
−                    }
+
−                }
+
−
+
−                WindowEvent::MouseWheel { delta, .. } => {
+
−                    let zoom_change = match delta {
+
−                        MouseScrollDelta::LineDelta(x, y) => y as f32 * 0.1f32,
+
−                        MouseScrollDelta::PixelDelta(delta) => {
+
−                            let physical = delta.to_physical(window.get_hidpi_factor());
+
−                            physical.y as f32 * 0.1f32
+
−                        }
+
−                    };
+
−                    engine.world.move_camera(Point::ZERO, zoom_change);
+
−                }
+
−                _ => (),
+
−            },
+
−            Event::DeviceEvent { event, .. } => match event {
+
−                DeviceEvent::MouseMotion { delta } => {
+
−                    if dragging {
+
−                        engine
+
−                            .world
+
−                            .move_camera(Point::new(delta.0 as i32, delta.1 as i32), 0.0)
+
−                    }
+
−                }
+
−                _ => {}
+
−            },
+
−            _ => (),
+
−        });
+
−
+
−        unsafe { window.make_current().unwrap() };
+
−
+
−        engine.render();
+
−        window.swap_buffers().unwrap();
+
−    }
+
−}