doukutsu-rs/src/framework/backend_glutin.rs

539 lines
23 KiB
Rust

use std::cell::{RefCell, UnsafeCell};
use std::ffi::c_void;
use std::mem;
use std::rc::Rc;
use std::sync::Arc;
use glutin::{Api, ContextBuilder, GlProfile, GlRequest, PossiblyCurrent, WindowedContext};
use glutin::event::{ElementState, Event, TouchPhase, VirtualKeyCode, WindowEvent};
use glutin::event_loop::{ControlFlow, EventLoop};
use glutin::window::WindowBuilder;
use imgui::{DrawCmdParams, DrawData, DrawIdx, DrawVert};
use crate::game::Game;
use crate::game::GAME_SUSPENDED;
use crate::common::Rect;
use crate::framework::backend::{Backend, BackendEventLoop, BackendRenderer, BackendTexture, SpriteBatchCommand};
use crate::framework::context::Context;
use crate::framework::error::GameResult;
use crate::framework::gl;
use crate::framework::keyboard::ScanCode;
use crate::framework::render_opengl::{GLContext, OpenGLRenderer};
use crate::input::touch_controls::TouchPoint;
pub struct GlutinBackend;
impl GlutinBackend {
pub fn new() -> GameResult<Box<dyn Backend>> {
Ok(Box::new(GlutinBackend))
}
}
impl Backend for GlutinBackend {
fn create_event_loop(&self, _ctx: &Context) -> GameResult<Box<dyn BackendEventLoop>> {
#[cfg(target_os = "android")]
loop {
match ndk_glue::native_window().as_ref() {
Some(_) => {
log::info!("NativeWindow Found: {:?}", ndk_glue::native_window());
break;
}
None => (),
}
}
Ok(Box::new(GlutinEventLoop { refs: Rc::new(UnsafeCell::new(None)) }))
}
}
pub struct GlutinEventLoop {
refs: Rc<UnsafeCell<Option<WindowedContext<PossiblyCurrent>>>>,
}
impl GlutinEventLoop {
fn get_context(&self, event_loop: &EventLoop<()>) -> &mut WindowedContext<PossiblyCurrent> {
let mut refs = unsafe { &mut *self.refs.get() };
if refs.is_none() {
let mut window = WindowBuilder::new();
let windowed_context = ContextBuilder::new();
let windowed_context = windowed_context.with_gl(GlRequest::Specific(Api::OpenGl, (3, 0)));
#[cfg(target_os = "android")]
let windowed_context = windowed_context.with_gl(GlRequest::Specific(Api::OpenGlEs, (2, 0)));
let windowed_context = windowed_context
.with_gl_profile(GlProfile::Core)
.with_gl_debug_flag(false)
.with_pixel_format(24, 8)
.with_vsync(true);
#[cfg(target_os = "windows")]
{
use glutin::platform::windows::WindowBuilderExtWindows;
window = window.with_drag_and_drop(false);
}
window = window.with_title("doukutsu-rs");
let windowed_context = windowed_context.build_windowed(window, event_loop).unwrap();
let windowed_context = unsafe { windowed_context.make_current().unwrap() };
#[cfg(target_os = "android")]
if let Some(nwin) = ndk_glue::native_window().as_ref() {
unsafe {
windowed_context.surface_created(nwin.ptr().as_ptr() as *mut std::ffi::c_void);
}
}
refs.replace(windowed_context);
}
refs.as_mut().unwrap()
}
}
#[cfg(target_os = "android")]
fn request_android_redraw() {
match ndk_glue::native_window().as_ref() {
Some(native_window) => {
let a_native_window: *mut ndk_sys::ANativeWindow = native_window.ptr().as_ptr();
let a_native_activity: *mut ndk_sys::ANativeActivity = ndk_glue::native_activity().ptr().as_ptr();
unsafe {
match (*(*a_native_activity).callbacks).onNativeWindowRedrawNeeded {
Some(callback) => callback(a_native_activity, a_native_window),
None => (),
};
};
}
None => (),
}
}
#[cfg(target_os = "android")]
fn get_insets() -> GameResult<(f32, f32, f32, f32)> {
unsafe {
use jni::objects::JObject;
use jni::JavaVM;
let vm_ptr = ndk_glue::native_activity().vm();
let vm = JavaVM::from_raw(vm_ptr)?;
let vm_env = vm.attach_current_thread()?;
//let class = vm_env.find_class("io/github/doukutsu_rs/MainActivity")?;
let class = vm_env.new_global_ref(JObject::from_raw(ndk_glue::native_activity().activity()))?;
let field = vm_env.get_field(class.as_obj(), "displayInsets", "[I")?.to_jni().l as jni::sys::jintArray;
let mut elements = [0; 4];
vm_env.get_int_array_region(field, 0, &mut elements)?;
vm_env.delete_local_ref(JObject::from_raw(field));
Ok((elements[0] as f32, elements[1] as f32, elements[2] as f32, elements[3] as f32))
}
}
fn get_scaled_size(width: u32, height: u32) -> (f32, f32) {
let scaled_height = ((height / 480).max(1) * 480) as f32;
let scaled_width = (width as f32 * (scaled_height as f32 / height as f32)).floor();
(scaled_width, scaled_height)
}
impl BackendEventLoop for GlutinEventLoop {
fn run(&mut self, game: &mut Game, ctx: &mut Context) {
let event_loop = EventLoop::new();
let state_ref = unsafe { &mut *game.state.get() };
let window: &'static mut WindowedContext<PossiblyCurrent> =
unsafe { std::mem::transmute(self.get_context(&event_loop)) };
{
let size = window.window().inner_size();
ctx.real_screen_size = (size.width, size.height);
ctx.screen_size = get_scaled_size(size.width.max(1), size.height.max(1));
state_ref.handle_resize(ctx).unwrap();
}
// it won't ever return
let (game, ctx): (&'static mut Game, &'static mut Context) =
unsafe { (std::mem::transmute(game), std::mem::transmute(ctx)) };
event_loop.run(move |event, _, control_flow| {
*control_flow = ControlFlow::Wait;
match event {
Event::WindowEvent { event: WindowEvent::CloseRequested, window_id }
if window_id == window.window().id() =>
{
state_ref.shutdown();
}
Event::Resumed => {
{
let mut mutex = GAME_SUSPENDED.lock().unwrap();
*mutex = false;
}
#[cfg(target_os = "android")]
if let Some(nwin) = ndk_glue::native_window().as_ref() {
state_ref.graphics_reset();
unsafe {
window.surface_created(nwin.ptr().as_ptr() as *mut std::ffi::c_void);
request_android_redraw();
}
}
state_ref.sound_manager.resume();
}
Event::Suspended => {
{
let mut mutex = GAME_SUSPENDED.lock().unwrap();
*mutex = true;
}
#[cfg(target_os = "android")]
unsafe {
window.surface_destroyed();
}
state_ref.sound_manager.pause();
}
Event::WindowEvent { event: WindowEvent::Resized(size), window_id }
if window_id == window.window().id() =>
{
if let Some(renderer) = &ctx.renderer {
if let Ok(imgui) = renderer.imgui() {
imgui.io_mut().display_size = [size.width as f32, size.height as f32];
}
ctx.real_screen_size = (size.width, size.height);
ctx.screen_size = get_scaled_size(size.width.max(1), size.height.max(1));
state_ref.handle_resize(ctx).unwrap();
}
}
Event::WindowEvent { event: WindowEvent::Touch(touch), window_id }
if window_id == window.window().id() =>
{
let mut controls = &mut state_ref.touch_controls;
let scale = state_ref.scale as f64;
let loc_x = (touch.location.x * ctx.screen_size.0 as f64 / ctx.real_screen_size.0 as f64) / scale;
let loc_y = (touch.location.y * ctx.screen_size.1 as f64 / ctx.real_screen_size.1 as f64) / scale;
match touch.phase {
TouchPhase::Started | TouchPhase::Moved => {
if let Some(point) = controls.points.iter_mut().find(|p| p.id == touch.id) {
point.last_position = point.position;
point.position = (loc_x, loc_y);
} else {
controls.touch_id_counter = controls.touch_id_counter.wrapping_add(1);
let point = TouchPoint {
id: touch.id,
touch_id: controls.touch_id_counter,
position: (loc_x, loc_y),
last_position: (0.0, 0.0),
};
controls.points.push(point);
if touch.phase == TouchPhase::Started {
controls.clicks.push(point);
}
}
}
TouchPhase::Ended | TouchPhase::Cancelled => {
controls.points.retain(|p| p.id != touch.id);
controls.clicks.retain(|p| p.id != touch.id);
}
}
}
Event::WindowEvent { event: WindowEvent::KeyboardInput { input, .. }, window_id }
if window_id == window.window().id() =>
{
if let Some(keycode) = input.virtual_keycode {
if let Some(drs_scan) = conv_keycode(keycode) {
let key_state = match input.state {
ElementState::Pressed => true,
ElementState::Released => false,
};
ctx.keyboard_context.set_key(drs_scan, key_state);
}
}
}
Event::RedrawRequested(id) if id == window.window().id() => {
{
let mutex = GAME_SUSPENDED.lock().unwrap();
if *mutex {
return;
}
}
#[cfg(not(target_os = "android"))]
{
if let Err(err) = game.draw(ctx) {
log::error!("Failed to draw frame: {}", err);
}
window.window().request_redraw();
}
#[cfg(target_os = "android")]
request_android_redraw();
}
Event::MainEventsCleared => {
if state_ref.shutdown {
log::info!("Shutting down...");
*control_flow = ControlFlow::Exit;
return;
}
{
let mutex = GAME_SUSPENDED.lock().unwrap();
if *mutex {
return;
}
}
game.update(ctx).unwrap();
#[cfg(target_os = "android")]
{
match get_insets() {
Ok(insets) => {
ctx.screen_insets = insets;
}
Err(e) => {
log::error!("Failed to update insets: {}", e);
}
}
if let Err(err) = game.draw(ctx) {
log::error!("Failed to draw frame: {}", err);
}
}
if state_ref.next_scene.is_some() {
mem::swap(&mut game.scene, &mut state_ref.next_scene);
state_ref.next_scene = None;
game.scene.as_mut().unwrap().init(state_ref, ctx).unwrap();
game.loops = 0;
state_ref.frame_time = 0.0;
}
}
_ => (),
}
});
}
fn new_renderer(&self, ctx: *mut Context) -> GameResult<Box<dyn BackendRenderer>> {
let mut imgui = imgui::Context::create();
imgui.io_mut().display_size = [640.0, 480.0];
let refs = self.refs.clone();
let user_data = Rc::into_raw(refs) as *mut c_void;
unsafe fn get_proc_address(user_data: &mut *mut c_void, name: &str) -> *const c_void {
let refs = Rc::from_raw(*user_data as *mut UnsafeCell<Option<WindowedContext<PossiblyCurrent>>>);
let result = {
let refs = &mut *refs.get();
if let Some(refs) = refs {
refs.get_proc_address(name)
} else {
std::ptr::null()
}
};
*user_data = Rc::into_raw(refs) as *mut c_void;
result
}
unsafe fn swap_buffers(user_data: &mut *mut c_void) {
let refs = Rc::from_raw(*user_data as *mut UnsafeCell<Option<WindowedContext<PossiblyCurrent>>>);
{
let refs = &mut *refs.get();
if let Some(refs) = refs {
refs.swap_buffers();
}
}
*user_data = Rc::into_raw(refs) as *mut c_void;
}
let gl_context = GLContext { gles2_mode: true, is_sdl: false, get_proc_address, swap_buffers, user_data, ctx };
Ok(Box::new(OpenGLRenderer::new(gl_context, UnsafeCell::new(imgui))))
}
}
fn conv_keycode(code: VirtualKeyCode) -> Option<ScanCode> {
match code {
VirtualKeyCode::Key1 => Some(ScanCode::Key1),
VirtualKeyCode::Key2 => Some(ScanCode::Key2),
VirtualKeyCode::Key3 => Some(ScanCode::Key3),
VirtualKeyCode::Key4 => Some(ScanCode::Key4),
VirtualKeyCode::Key5 => Some(ScanCode::Key5),
VirtualKeyCode::Key6 => Some(ScanCode::Key6),
VirtualKeyCode::Key7 => Some(ScanCode::Key7),
VirtualKeyCode::Key8 => Some(ScanCode::Key8),
VirtualKeyCode::Key9 => Some(ScanCode::Key9),
VirtualKeyCode::Key0 => Some(ScanCode::Key0),
VirtualKeyCode::A => Some(ScanCode::A),
VirtualKeyCode::B => Some(ScanCode::B),
VirtualKeyCode::C => Some(ScanCode::C),
VirtualKeyCode::D => Some(ScanCode::D),
VirtualKeyCode::E => Some(ScanCode::E),
VirtualKeyCode::F => Some(ScanCode::F),
VirtualKeyCode::G => Some(ScanCode::G),
VirtualKeyCode::H => Some(ScanCode::H),
VirtualKeyCode::I => Some(ScanCode::I),
VirtualKeyCode::J => Some(ScanCode::J),
VirtualKeyCode::K => Some(ScanCode::K),
VirtualKeyCode::L => Some(ScanCode::L),
VirtualKeyCode::M => Some(ScanCode::M),
VirtualKeyCode::N => Some(ScanCode::N),
VirtualKeyCode::O => Some(ScanCode::O),
VirtualKeyCode::P => Some(ScanCode::P),
VirtualKeyCode::Q => Some(ScanCode::Q),
VirtualKeyCode::R => Some(ScanCode::R),
VirtualKeyCode::S => Some(ScanCode::S),
VirtualKeyCode::T => Some(ScanCode::T),
VirtualKeyCode::U => Some(ScanCode::U),
VirtualKeyCode::V => Some(ScanCode::V),
VirtualKeyCode::W => Some(ScanCode::W),
VirtualKeyCode::X => Some(ScanCode::X),
VirtualKeyCode::Y => Some(ScanCode::Y),
VirtualKeyCode::Z => Some(ScanCode::Z),
VirtualKeyCode::Escape => Some(ScanCode::Escape),
VirtualKeyCode::F1 => Some(ScanCode::F1),
VirtualKeyCode::F2 => Some(ScanCode::F2),
VirtualKeyCode::F3 => Some(ScanCode::F3),
VirtualKeyCode::F4 => Some(ScanCode::F4),
VirtualKeyCode::F5 => Some(ScanCode::F5),
VirtualKeyCode::F6 => Some(ScanCode::F6),
VirtualKeyCode::F7 => Some(ScanCode::F7),
VirtualKeyCode::F8 => Some(ScanCode::F8),
VirtualKeyCode::F9 => Some(ScanCode::F9),
VirtualKeyCode::F10 => Some(ScanCode::F10),
VirtualKeyCode::F11 => Some(ScanCode::F11),
VirtualKeyCode::F12 => Some(ScanCode::F12),
VirtualKeyCode::F13 => Some(ScanCode::F13),
VirtualKeyCode::F14 => Some(ScanCode::F14),
VirtualKeyCode::F15 => Some(ScanCode::F15),
VirtualKeyCode::F16 => Some(ScanCode::F16),
VirtualKeyCode::F17 => Some(ScanCode::F17),
VirtualKeyCode::F18 => Some(ScanCode::F18),
VirtualKeyCode::F19 => Some(ScanCode::F19),
VirtualKeyCode::F20 => Some(ScanCode::F20),
VirtualKeyCode::F21 => Some(ScanCode::F21),
VirtualKeyCode::F22 => Some(ScanCode::F22),
VirtualKeyCode::F23 => Some(ScanCode::F23),
VirtualKeyCode::F24 => Some(ScanCode::F24),
VirtualKeyCode::Snapshot => Some(ScanCode::Snapshot),
VirtualKeyCode::Scroll => Some(ScanCode::Scroll),
VirtualKeyCode::Pause => Some(ScanCode::Pause),
VirtualKeyCode::Insert => Some(ScanCode::Insert),
VirtualKeyCode::Home => Some(ScanCode::Home),
VirtualKeyCode::Delete => Some(ScanCode::Delete),
VirtualKeyCode::End => Some(ScanCode::End),
VirtualKeyCode::PageDown => Some(ScanCode::PageDown),
VirtualKeyCode::PageUp => Some(ScanCode::PageUp),
VirtualKeyCode::Left => Some(ScanCode::Left),
VirtualKeyCode::Up => Some(ScanCode::Up),
VirtualKeyCode::Right => Some(ScanCode::Right),
VirtualKeyCode::Down => Some(ScanCode::Down),
VirtualKeyCode::Back => Some(ScanCode::Back),
VirtualKeyCode::Return => Some(ScanCode::Return),
VirtualKeyCode::Space => Some(ScanCode::Space),
VirtualKeyCode::Compose => Some(ScanCode::Compose),
VirtualKeyCode::Caret => Some(ScanCode::Caret),
VirtualKeyCode::Numlock => Some(ScanCode::Numlock),
VirtualKeyCode::Numpad0 => Some(ScanCode::Numpad0),
VirtualKeyCode::Numpad1 => Some(ScanCode::Numpad1),
VirtualKeyCode::Numpad2 => Some(ScanCode::Numpad2),
VirtualKeyCode::Numpad3 => Some(ScanCode::Numpad3),
VirtualKeyCode::Numpad4 => Some(ScanCode::Numpad4),
VirtualKeyCode::Numpad5 => Some(ScanCode::Numpad5),
VirtualKeyCode::Numpad6 => Some(ScanCode::Numpad6),
VirtualKeyCode::Numpad7 => Some(ScanCode::Numpad7),
VirtualKeyCode::Numpad8 => Some(ScanCode::Numpad8),
VirtualKeyCode::Numpad9 => Some(ScanCode::Numpad9),
VirtualKeyCode::NumpadAdd => Some(ScanCode::NumpadAdd),
VirtualKeyCode::NumpadDivide => Some(ScanCode::NumpadDivide),
VirtualKeyCode::NumpadDecimal => Some(ScanCode::NumpadDecimal),
VirtualKeyCode::NumpadComma => Some(ScanCode::NumpadComma),
VirtualKeyCode::NumpadEnter => Some(ScanCode::NumpadEnter),
VirtualKeyCode::NumpadEquals => Some(ScanCode::NumpadEquals),
VirtualKeyCode::NumpadMultiply => Some(ScanCode::NumpadMultiply),
VirtualKeyCode::NumpadSubtract => Some(ScanCode::NumpadSubtract),
VirtualKeyCode::AbntC1 => Some(ScanCode::AbntC1),
VirtualKeyCode::AbntC2 => Some(ScanCode::AbntC2),
VirtualKeyCode::Apostrophe => Some(ScanCode::Apostrophe),
VirtualKeyCode::Apps => Some(ScanCode::Apps),
VirtualKeyCode::Asterisk => Some(ScanCode::Asterisk),
VirtualKeyCode::At => Some(ScanCode::At),
VirtualKeyCode::Ax => Some(ScanCode::Ax),
VirtualKeyCode::Backslash => Some(ScanCode::Backslash),
VirtualKeyCode::Calculator => Some(ScanCode::Calculator),
VirtualKeyCode::Capital => Some(ScanCode::Capital),
VirtualKeyCode::Colon => Some(ScanCode::Colon),
VirtualKeyCode::Comma => Some(ScanCode::Comma),
VirtualKeyCode::Convert => Some(ScanCode::Convert),
VirtualKeyCode::Equals => Some(ScanCode::Equals),
VirtualKeyCode::Grave => Some(ScanCode::Grave),
VirtualKeyCode::Kana => Some(ScanCode::Kana),
VirtualKeyCode::Kanji => Some(ScanCode::Kanji),
VirtualKeyCode::LAlt => Some(ScanCode::LAlt),
VirtualKeyCode::LBracket => Some(ScanCode::LBracket),
VirtualKeyCode::LControl => Some(ScanCode::LControl),
VirtualKeyCode::LShift => Some(ScanCode::LShift),
VirtualKeyCode::LWin => Some(ScanCode::LWin),
VirtualKeyCode::Mail => Some(ScanCode::Mail),
VirtualKeyCode::MediaSelect => Some(ScanCode::MediaSelect),
VirtualKeyCode::MediaStop => Some(ScanCode::MediaStop),
VirtualKeyCode::Minus => Some(ScanCode::Minus),
VirtualKeyCode::Mute => Some(ScanCode::Mute),
VirtualKeyCode::MyComputer => Some(ScanCode::MyComputer),
VirtualKeyCode::NavigateForward => Some(ScanCode::NavigateForward),
VirtualKeyCode::NavigateBackward => Some(ScanCode::NavigateBackward),
VirtualKeyCode::NextTrack => Some(ScanCode::NextTrack),
VirtualKeyCode::NoConvert => Some(ScanCode::NoConvert),
VirtualKeyCode::OEM102 => Some(ScanCode::OEM102),
VirtualKeyCode::Period => Some(ScanCode::Period),
VirtualKeyCode::PlayPause => Some(ScanCode::PlayPause),
VirtualKeyCode::Plus => Some(ScanCode::Plus),
VirtualKeyCode::Power => Some(ScanCode::Power),
VirtualKeyCode::PrevTrack => Some(ScanCode::PrevTrack),
VirtualKeyCode::RAlt => Some(ScanCode::RAlt),
VirtualKeyCode::RBracket => Some(ScanCode::RBracket),
VirtualKeyCode::RControl => Some(ScanCode::RControl),
VirtualKeyCode::RShift => Some(ScanCode::RShift),
VirtualKeyCode::RWin => Some(ScanCode::RWin),
VirtualKeyCode::Semicolon => Some(ScanCode::Semicolon),
VirtualKeyCode::Slash => Some(ScanCode::Slash),
VirtualKeyCode::Sleep => Some(ScanCode::Sleep),
VirtualKeyCode::Stop => Some(ScanCode::Stop),
VirtualKeyCode::Sysrq => Some(ScanCode::Sysrq),
VirtualKeyCode::Tab => Some(ScanCode::Tab),
VirtualKeyCode::Underline => Some(ScanCode::Underline),
VirtualKeyCode::Unlabeled => Some(ScanCode::Unlabeled),
VirtualKeyCode::VolumeDown => Some(ScanCode::VolumeDown),
VirtualKeyCode::VolumeUp => Some(ScanCode::VolumeUp),
VirtualKeyCode::Wake => Some(ScanCode::Wake),
VirtualKeyCode::WebBack => Some(ScanCode::WebBack),
VirtualKeyCode::WebFavorites => Some(ScanCode::WebFavorites),
VirtualKeyCode::WebForward => Some(ScanCode::WebForward),
VirtualKeyCode::WebHome => Some(ScanCode::WebHome),
VirtualKeyCode::WebRefresh => Some(ScanCode::WebRefresh),
VirtualKeyCode::WebSearch => Some(ScanCode::WebSearch),
VirtualKeyCode::WebStop => Some(ScanCode::WebStop),
VirtualKeyCode::Yen => Some(ScanCode::Yen),
VirtualKeyCode::Copy => Some(ScanCode::Copy),
VirtualKeyCode::Paste => Some(ScanCode::Paste),
VirtualKeyCode::Cut => Some(ScanCode::Cut),
}
}