wasm: Enable backtraces in browser console
[mandelwow.git] / main.rs
diff --git a/main.rs b/main.rs
index 12a127b9df1472c665730d69af6c1e9b322c2406..175fb611954950f9b921645dbd884f210b4c7aea 100644 (file)
--- a/main.rs
+++ b/main.rs
@@ -1,53 +1,89 @@
-// Wow. Such fractal.
+extern crate mandelwow_lib;
 
 extern crate cgmath;
-#[macro_use(uniform,program,implement_vertex)]
+#[macro_use(uniform)]
 extern crate glium;
 extern crate glutin;
-extern crate image;
-extern crate libxm;
-extern crate sdl2;
-
-//use cgmath::prelude::*;
-use cgmath::{Euler, Matrix4, Rad, Vector3};
-use cube::Cube;
-use glium::{DisplayBuild, Surface};
-use glutin::ElementState::Pressed;
-use glutin::Event::KeyboardInput;
-use glutin::VirtualKeyCode;
-
-mod bounding_box;
-mod cube;
-mod mandelwow;
-mod sound;
-mod support;
-
-fn screenshot(display : &glium::Display) {
-    let image: glium::texture::RawImage2d<u8> = display.read_front_buffer();
-    let image = image::ImageBuffer::from_raw(image.width, image.height, image.data.into_owned()).unwrap();
-    let image = image::DynamicImage::ImageRgba8(image).flipv();
-    let mut output = std::fs::File::create(&std::path::Path::new("screenshot.png")).unwrap();
-    image.save(&mut output, image::ImageFormat::PNG).unwrap();
+
+use cgmath::{Euler, Matrix4, Rad, SquareMatrix, Vector3, Vector4, Zero};
+use cgmath::conv::array4x4;
+use glium::{Surface};
+use glium::glutin::WindowEvent::KeyboardInput;
+use glium::glutin::VirtualKeyCode;
+use mandelwow_lib::*;
+use std::f32::consts::PI;
+use timer::Timer;
+
+#[cfg(target_os = "emscripten")]
+use std::os::raw::{c_int, c_void};
+
+fn gl_info(display : &glium::Display) {
+    if cfg!(feature = "logging") {
+        let version = *display.get_opengl_version();
+        let api = match version {
+            glium::Version(glium::Api::Gl, _, _) => "OpenGL",
+            glium::Version(glium::Api::GlEs, _, _) => "OpenGL ES"
+        };
+        println!("{} context verson: {}", api, display.get_opengl_version_string());
+    }
+}
+
+#[cfg(target_os = "emscripten")]
+#[allow(non_camel_case_types)]
+type em_callback_func = unsafe extern fn();
+#[cfg(target_os = "emscripten")]
+extern {
+    fn emscripten_set_main_loop(func : em_callback_func, fps : c_int, simulate_infinite_loop : c_int);
+}
+
+#[cfg(target_os = "emscripten")]
+thread_local!(static MAIN_LOOP_CALLBACK: std::cell::RefCell<*mut c_void> =
+              std::cell::RefCell::new(std::ptr::null_mut()));
+
+#[cfg(target_os = "emscripten")]
+pub fn set_main_loop_callback<F>(callback : F) where F : FnMut() -> support::Action {
+    MAIN_LOOP_CALLBACK.with(|log| {
+            *log.borrow_mut() = &callback as *const _ as *mut c_void;
+            });
+
+    unsafe { emscripten_set_main_loop(wrapper::<F>, 0, 1); }
+
+    unsafe extern "C" fn wrapper<F>() where F : FnMut() -> support::Action {
+        MAIN_LOOP_CALLBACK.with(|z| {
+            let closure = *z.borrow_mut() as *mut F;
+            (*closure)();
+        });
+    }
+}
+
+#[cfg(not(target_os = "emscripten"))]
+pub fn set_main_loop_callback<F>(callback : F) where F : FnMut() -> support::Action {
+    support::start_loop(callback);
 }
 
 fn main() {
-    let _soundplayer = sound::start();
+    let mut soundplayer = sound::start();
 
-    let display = glutin::WindowBuilder::new()
-        //.with_dimensions(1024, 768)
-        .with_fullscreen(glutin::get_primary_monitor())
-        .with_depth_buffer(24)
-        .with_vsync()
-        .with_title(format!("MandelWow"))
-        .build_glium()
-        .unwrap();
+    let mut events_loop = glium::glutin::EventsLoop::new();
+    let window = glium::glutin::WindowBuilder::new()
+        //.with_dimensions(1280, 720)
+        .with_fullscreen(Some(events_loop.get_primary_monitor()));
+        //.with_title("MandelWow");
+    let context = glium::glutin::ContextBuilder::new()
+        //.with_gl_profile(glutin::GlProfile::Core)
+        //.with_gl(glutin::GlRequest::Specific(glutin::Api::WebGl, (2, 0)))
+        //.with_depth_buffer(24)
+        .with_vsync(true);
+    let display = glium::Display::new(window, context, &events_loop).unwrap();
+    gl_info(&display);
 
+//    let mut text = text::Text::new(&display, 'A');
     let mandelwow_program = mandelwow::program(&display);
     let bounding_box_program = bounding_box::solid_fill_program(&display);
+    let shaded_program = shaded_cube::shaded_program(&display);
 
+    let mut timer = Timer::new();
     let mut camera = support::camera::CameraState::new();
-    let mut t: f32 = 0.0;
-    let mut pause = false;
     let mut bounding_box_enabled = true;
     let mut fullscreen = true;
 
@@ -60,14 +96,45 @@ fn main() {
         zmin: -1.1,
         zmax:  1.1,
     };
+    let mandelwow_bbox = bounding_box::BoundingBox::new(&display, &bounds, &bounding_box_program);
+    let shaded_cube = ShadedCube::new(&display, &shaded_program);
 
-    support::start_loop(|| {
-        camera.update();
+    const SEA_XSIZE: usize = 40;
+    const SEA_ZSIZE: usize = 25;
+    let sea_xmin = -20.0f32;
+    let sea_xmax =  20.0f32;
+    let sea_y = -2.5;
+    let sea_zmin =  -2.0f32;
+    let sea_zmax = -27.0f32;
+    let sea_xstep = (sea_xmax - sea_xmin) / (SEA_XSIZE as f32);
+    let sea_zstep = (sea_zmax - sea_zmin) / (SEA_ZSIZE as f32);
+    println!("xstep={} ystep={:?}", sea_xstep, sea_zstep);
+
+    let mut sea = [[Vector3::zero(); SEA_ZSIZE]; SEA_XSIZE];
+    for x in 0..SEA_XSIZE {
+        for z in 0..SEA_ZSIZE {
+            sea[x][z] = Vector3 {
+                x: sea_xmin + (x as f32) * sea_xstep,
+                y: sea_y,
+                z: sea_zmin + (z as f32) * sea_zstep,
+            };
+        }
+    }
 
-        if !pause {
-            // Increment time
-            t += 0.01;
+    let mut last_hit = 0.0f32;
+    let mut hit_time = 0.0f32;
+    set_main_loop_callback(|| {
+        let t = timer.t;
+        let new_hit = sound::hit_event(&mut soundplayer);
+        if new_hit > last_hit {
+            hit_time = t;
         }
+        last_hit = new_hit;
+        let hit_delta = t - hit_time;
+        let hit_scale = 1. / (1. + hit_delta * hit_delta * 15.0) + 1.;
+
+        camera.update();
+        let perspview = camera.get_perspview();
 
         // Vary the wow factor to slice the Mandelwow along its 4th dimension.
         let wmin = -0.8;
@@ -80,12 +147,14 @@ fn main() {
         let mut frame = display.draw();
         frame.clear_color_and_depth((0.0, 0.0, 0.0, 1.0), 1.0);
 
-        let rotation = cgmath::Matrix4::from(
-            Euler { x: Rad(t.sin() / 3.), y: Rad(t.sin() / 2.), z: Rad(t)});
-        let z_trans = -2.0;  // Send the model back a little bit so it fits the screen.
+        let rotation = Matrix4::from(
+            Euler { x: Rad(t.sin() / 3.), y: Rad(t.sin() / 2.), z: Rad(t / 1.5)});
+        let z_trans = -3.0;  // Send the model back a little bit so it fits the screen.
+        let scale =
+            Matrix4::from_diagonal(Vector4::new(hit_scale, hit_scale, hit_scale, 1.0));
         let model2 =
-            Matrix4::from_translation(Vector3::unit_z() * z_trans) * rotation;
-        let model = cgmath::conv::array4x4(model2);
+            Matrix4::from_translation(Vector3::unit_z() * z_trans) * rotation * scale;
+        let model = array4x4(model2);
 
         // Draw the bounding box before the fractal, when the Z-buffer is still clear,
         // so the lines behind the semi-translucent areas will be drawn.
@@ -95,52 +164,94 @@ fn main() {
                 view:  camera.get_view(),
                 perspective: camera.get_perspective(),
             };
-            bounding_box::draw(&display, &mut frame, &bounding_box_program, &uniforms, &bounds);
+            mandelwow_bbox.draw(&mut frame, &uniforms);
+        }
+
+        let text_rot = Matrix4::from_angle_x(cgmath::Deg(-90.0f32));
+        let text_pos = Matrix4::from_translation(Vector3 { x: 0.0, y: 0.501, z: 0.0f32}) * text_rot;
+        for x in 0..SEA_XSIZE {
+            for z in 0..SEA_ZSIZE {
+                let wave = ((x as f32 / SEA_XSIZE as f32 * PI * 5.0 + t * 2.0).sin() +
+                            (z as f32 / SEA_ZSIZE as f32 * PI * 3.0 + t * 3.0).sin()) * 0.3;
+                let model = Matrix4::from_translation(
+                    sea[x][z] + Vector3 {x: 0., y: wave, z: 0.});
+                let uniforms = uniform! {
+                    model: array4x4(model),
+                    perspview: perspview,
+                    col: [0., (1. - wave).abs() * 0.5,  wave.abs()],
+                };
+                shaded_cube.draw(&mut frame, &uniforms);
+/*                text.model = model * text_pos;
+                text.character = (x + z * SEA_XSIZE) as u8 as char;
+                text.draw(&mut frame, &perspview);
+*/            }
         }
 
         mandelwow::draw(&display, &mut frame, &mandelwow_program, model, &camera, &bounds, wow);
+
         frame.finish().unwrap();
 
-        for ev in display.poll_events() {
-            match ev {
-                glutin::Event::Closed |
-                KeyboardInput(Pressed, _, Some(VirtualKeyCode::Escape)) |
-                KeyboardInput(Pressed, _, Some(VirtualKeyCode::Q)) => {
-                    return support::Action::Stop
-                },
-                KeyboardInput(Pressed, _, Some(VirtualKeyCode::B)) => {
-                    bounding_box_enabled ^= true;
-                },
-                KeyboardInput(Pressed, _, Some(VirtualKeyCode::P)) => {
-                    pause ^= true;
-                },
-                KeyboardInput(Pressed, _, Some(VirtualKeyCode::PageUp)) => {
-                    t += 0.01;
-                },
-                KeyboardInput(Pressed, _, Some(VirtualKeyCode::PageDown)) => {
-                    t -= 0.01;
-                },
-                KeyboardInput(Pressed, _, Some(VirtualKeyCode::F10)) => {
-                    screenshot(&display);
-                },
-                KeyboardInput(Pressed, _, Some(VirtualKeyCode::F11)) => {
-                    fullscreen ^= true;
-                    if fullscreen {
-                        // Not implemented on Linux
-                        glutin::WindowBuilder::new()
-                            .with_fullscreen(glutin::get_primary_monitor())
-                            .with_depth_buffer(24)
-                            .rebuild_glium(&display).unwrap();
-                    } else {
-                        //glutin::WindowBuilder::new()
-                        //    .rebuild_glium(&display).unwrap();
-                    }
-                },
-                ev => camera.process_input(&ev),
+        let mut action = support::Action::Continue;
+        events_loop.poll_events(|event| {
+            if let glium::glutin::Event::WindowEvent { event, .. } = event {
+                camera.process_input(&event);
+                match event {
+                    glium::glutin::WindowEvent::CloseRequested => {
+                        action = support::Action::Stop
+                    },
+                    KeyboardInput { input, .. } => {
+                        if input.state == glium::glutin::ElementState::Pressed {
+                            if let Some(key) = input.virtual_keycode {
+                                match key {
+                                    VirtualKeyCode::Escape | VirtualKeyCode::Q => {
+                                        action = support::Action::Stop;
+                                    },
+                                    _ => (),
+                                }
+                            }
+                        }
+                    },
+/*
+                    KeyboardInput { input: glutin::KeyboardInput { state: Pressed, virtual_keycode: Some(VirtualKeyCode::Escape), .. } } |
+                    KeyboardInput { input: glutin::KeyboardInput { state: Pressed, virtual_keycode: Some(VirtualKeyCode::Q), .. } } => {
+                        return support::Action::Stop
+                    },
+                    KeyboardInput { state: Pressed, virtual_keycode: Some(VirtualKeyCode::B) } => {
+                        bounding_box_enabled ^= true;
+                    },
+                    KeyboardInput { state: Pressed, virtual_keycode: Some(VirtualKeyCode::P) } => {
+                        timer.pause ^= true;
+                    },
+                    KeyboardInput { state: Pressed, virtual_keycode: Some(VirtualKeyCode::PageUp) } => {
+                        timer.t += 0.01;
+                    },
+                    KeyboardInput { state: Pressed, virtual_keycode: Some(VirtualKeyCode::PageDown) } => {
+                        timer.t -= 0.01;
+                    },
+                    KeyboardInput { state: Pressed, virtual_keycode: Some(VirtualKeyCode::F10) } => {
+                        screenshot(&display);
+                    },
+                    KeyboardInput { state: Pressed, virtual_keycode: Some(VirtualKeyCode::F11) } => {
+                        fullscreen ^= true;
+                        if fullscreen {
+                            // Not implemented on Linux
+                            glutin::WindowBuilder::new()
+                                .with_fullscreen(glutin::get_primary_monitor())
+                                .with_depth_buffer(24)
+                                .rebuild_glium(&display).unwrap();
+                        } else {
+                            glutin::WindowBuilder::new()
+                                .rebuild_glium(&display).unwrap();
+                        }
+                    },
+*/
+                    _ => (),
+                }
             }
-        }
+        });
 
-        support::Action::Continue
-    });
+        timer.update();
 
+        action
+    });
 }