lua: start exposing events

lyra-game/src/winit/mod.rs

@@ -4,3 +4,5 @@ pub use plugin::*;
 
 mod window;
 pub use window::*;
+
+pub use winit::dpi as dpi;

lyra-game/src/winit/plugin.rs

@@ -13,6 +13,9 @@ use winit::{
     window::{Window, WindowAttributes, WindowId},
 };
 
+pub use winit::event::{DeviceId, DeviceEvent, MouseScrollDelta, ElementState};
+pub use winit::keyboard::PhysicalKey;
+
 use crate::{
     game::{App, WindowState},
     plugin::Plugin,
@@ -26,9 +29,9 @@ use super::WindowOptions;
 #[derive(Debug, Clone, Reflect)]
 pub struct DeviceEventPair {
     #[reflect(skip)]
-    pub device_src: winit::event::DeviceId,
+    pub device_src: DeviceId,
     #[reflect(skip)]
-    pub event: winit::event::DeviceEvent,
+    pub event: DeviceEvent,
 }
 
 pub struct WinitPlugin {

lyra-scripting/lyra-scripting-derive/src/lua_macro.rs

@@ -10,6 +10,7 @@ use crate::{field::{Field, FieldType}, FN_NAME_INTERNAL_REFLECT, FN_NAME_INTERNA
 enum SkipType {
     /// Skips implementing
     LuaReflect,
+    LuaWrapper,
 }
 
 impl syn::parse::Parse for SkipType {
@@ -19,6 +20,7 @@ impl syn::parse::Parse for SkipType {
 
         match name_str.as_str() {
             "lua_reflect" => Ok(Self::LuaReflect),
+            "lua_wrapper" => Ok(Self::LuaWrapper),
             _ => Err(syn::Error::new_spanned(name, "unknown skip type")),
         }
     }
@@ -483,6 +485,24 @@ pub fn wrap_lua_struct_impl(input: proc_macro::TokenStream) -> proc_macro::Token
         }
     };
 
+    let lua_wrapper = if input.skips.contains(&SkipType::LuaWrapper) {
+        quote!()
+    } else {
+        quote! {
+            impl lyra_scripting::lua::LuaWrapper for #wrapper_typename {
+                type Wrap = #path;
+                
+                fn wrapped_type_id() -> std::any::TypeId {
+                    std::any::TypeId::of::<#path>()
+                }
+    
+                fn into_wrapped(self) -> Self::Wrap {
+                    self.0
+                }
+            }
+        }
+    };
+
     for field in input.auto_fields.iter() {
         if field.field_ty.is_unknown() && !field.skip_setter {
             return syn::Error::new(
@@ -583,6 +603,7 @@ pub fn wrap_lua_struct_impl(input: proc_macro::TokenStream) -> proc_macro::Token
         impl mlua::UserData for #wrapper_typename {
             fn add_fields<F: mlua::UserDataFields<Self>>(fields: &mut F) {
                 use mlua::IntoLua;
+                use mlua::FromLua;
 
                 #(#fields)*
 
@@ -591,6 +612,7 @@ pub fn wrap_lua_struct_impl(input: proc_macro::TokenStream) -> proc_macro::Token
 
             fn add_methods<M: mlua::UserDataMethods<Self>>(methods: &mut M) {
                 use mlua::IntoLua;
+                use mlua::FromLua;
 
                 #lua_reflects
 
@@ -600,16 +622,6 @@ pub fn wrap_lua_struct_impl(input: proc_macro::TokenStream) -> proc_macro::Token
             }
         }
 
-        impl lyra_scripting::lua::LuaWrapper for #wrapper_typename {
+        #lua_wrapper
-            type Wrap = #path;
-            
-            fn wrapped_type_id() -> std::any::TypeId {
-                std::any::TypeId::of::<#path>()
-            }
-
-            fn into_wrapped(self) -> Self::Wrap {
-                self.0
-            }
-        }
     })
 }

lyra-scripting/src/lua/proxy.rs

@@ -12,7 +12,11 @@ pub trait LuaWrapper {
     type Wrap: Reflect + 'static;
 
     /// The type id of the wrapped type.
-    fn wrapped_type_id() -> TypeId;
+    #[inline(always)]
+    fn wrapped_type_id() -> TypeId {
+        TypeId::of::<Self::Wrap>()
+    }
+
     fn into_wrapped(self) -> Self::Wrap;
 }
 

lyra-scripting/src/lua/wrappers/events.rs

@@ -0,0 +1,318 @@
+use crate::lua::LuaWrapper;
+use lyra_game::{
+    input::{KeyCode, NativeKeyCode},
+    math::Vec2,
+    winit::{
+        dpi::PhysicalPosition, DeviceEvent, DeviceEventPair, DeviceId, MouseScrollDelta,
+        PhysicalKey,
+    },
+};
+use lyra_scripting_derive::wrap_lua_struct;
+
+use crate::lyra_engine;
+
+use super::LuaVec2;
+
+wrap_lua_struct!(DeviceId, skip(lua_reflect, lua_wrapper));
+
+/// Wraps [`DeviceEvent`] and implements [`IntoLua`]
+#[derive(Clone)]
+pub struct LuaDeviceEventRaw(pub(crate) DeviceEvent);
+
+impl std::ops::Deref for LuaDeviceEventRaw {
+    type Target = DeviceEvent;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl std::ops::DerefMut for LuaDeviceEventRaw {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+
+impl mlua::FromLua for LuaDeviceEventRaw {
+    fn from_lua(v: mlua::Value, _: &mlua::Lua) -> mlua::Result<Self> {
+        let ty = v.type_name();
+        let table = v.as_table().ok_or(mlua::Error::FromLuaConversionError {
+            from: ty,
+            to: "LuaDeviceEventRaw".into(),
+            message: Some("expected Lua Table".into()),
+        })?;
+
+        let type_str: String = table.get("type")?;
+        let type_str = type_str.as_str();
+
+        let ret = match type_str {
+            "added" => Self(DeviceEvent::Added),
+            "removed" => Self(DeviceEvent::Removed),
+            "mouse_motion" => {
+                let delta: LuaVec2 = table.get("delta")?;
+                Self(DeviceEvent::MouseMotion {
+                    delta: (delta.x as _, delta.y as _),
+                })
+            }
+            "mouse_wheel" => {
+                let delta = if table.contains_key("line_delta")? {
+                    let ld: LuaVec2 = table.get("line_delta")?;
+                    MouseScrollDelta::LineDelta(ld.x, ld.y)
+                } else if table.contains_key("pixel_delta")? {
+                    let pd: LuaVec2 = table.get("pixel_delta")?;
+                    let pos = PhysicalPosition::new(pd.x as f64, pd.y as f64);
+                    MouseScrollDelta::PixelDelta(pos)
+                } else {
+                    return Err(mlua::Error::FromLuaConversionError {
+                        from: ty,
+                        to: "LuaDeviceEventRaw".into(),
+                        message: Some(
+                            "could not find line_delta or pixel_delta in 'mouse_wheel' \
+                            device event"
+                                .into(),
+                        ),
+                    });
+                };
+
+                Self(DeviceEvent::MouseWheel { delta })
+            }
+            "motion" => {
+                let axis: u32 = table.get("axis")?;
+                let value: f64 = table.get("value")?;
+                Self(DeviceEvent::Motion { axis, value })
+            }
+            "button" => {
+                let button: u32 = table.get("button")?;
+
+                let state_str: String = table.get("state")?;
+                let state_str = state_str.as_str();
+                let state = match state_str {
+                    "pressed" => lyra_game::winit::ElementState::Pressed,
+                    "released" => lyra_game::winit::ElementState::Released,
+                    _ => {
+                        return Err(mlua::Error::FromLuaConversionError {
+                            from: ty,
+                            to: "LuaDeviceEventRaw".into(),
+                            message: Some(format!("unknown button state: '{}'", state_str)),
+                        });
+                    }
+                };
+
+                Self(DeviceEvent::Button { button, state })
+            }
+            "key" => {
+                let state_str: String = table.get("state")?;
+                let state_str = state_str.as_str();
+                let state = match state_str {
+                    "pressed" => lyra_game::winit::ElementState::Pressed,
+                    "released" => lyra_game::winit::ElementState::Released,
+                    _ => {
+                        return Err(mlua::Error::FromLuaConversionError {
+                            from: ty,
+                            to: "LuaDeviceEventRaw".into(),
+                            message: Some(format!("unknown key state: '{}'", state_str)),
+                        });
+                    }
+                };
+
+                if table.contains_key("code")? {
+                    let code_str: String = table.get("code")?;
+                    let code = KeyCode::from_str(&code_str);
+                    if code.is_none() {
+                        return Err(mlua::Error::FromLuaConversionError {
+                            from: ty,
+                            to: "LuaDeviceEventRaw".into(),
+                            message: Some(format!("unknown key code: '{}'", code_str)),
+                        });
+                    }
+
+                    let phy = PhysicalKey::Code(code);
+                    Self(DeviceEvent::Key(RawKeyEvent {
+                        physical_key: phy,
+                        state,
+                    }))
+                } else if table.contains_key("native")? {
+                    let native_str: String = table.get("native")?;
+                    let native_str = native_str.as_str();
+                    let native_code: u32 = table.get("native_code")?;
+
+                    let native_code = match native_str {
+                        "unknown" => NativeKeyCode::Unidentified,
+                        "android" => NativeKeyCode::Android(native_code),
+                        "macos" => NativeKeyCode::MacOS(native_code as u16),
+                        "windows" => NativeKeyCode::Windows(native_code),
+                        "xkb" => NativeKeyCode::Xkb(native_code),
+                    };
+
+                    Self(DeviceEvent::Key(RawKeyEvent {
+                        physical_key: PhysicalKey::Unidentified(native_code),
+                        state,
+                    }))
+                } else {
+                    return Err(mlua::Error::FromLuaConversionError {
+                        from: ty,
+                        to: "LuaDeviceEventRaw".into(),
+                        message: Some(
+                            "malformed Table for LuaDeviceEventRaw, missing key \
+                            code"
+                                .into(),
+                        ),
+                    });
+                }
+            }
+            _ => {
+                return Err(mlua::Error::FromLuaConversionError {
+                    from: ty,
+                    to: "LuaDeviceEventRaw".into(),
+                    message: Some(format!("unknown device event type '{}'", type_str)),
+                });
+            }
+        };
+
+        Ok(ret)
+    }
+}
+
+impl mlua::IntoLua for LuaDeviceEventRaw {
+    fn into_lua(self, lua: &mlua::Lua) -> mlua::Result<mlua::Value> {
+        let table = lua.create_table()?;
+
+        match self.0 {
+            DeviceEvent::Added => {
+                table.set("type", "added")?;
+            }
+            DeviceEvent::Removed => {
+                table.set("type", "removed")?;
+            }
+            DeviceEvent::MouseMotion { delta } => {
+                table.set("type", "mouse_motion")?;
+                table.set("delta", LuaVec2(Vec2::new(delta.0 as _, delta.1 as _)))?;
+            }
+            DeviceEvent::MouseWheel { delta } => {
+                table.set("type", "mouse_wheel")?;
+
+                match delta {
+                    MouseScrollDelta::LineDelta(x, y) => {
+                        let d = LuaVec2(Vec2::new(x, y));
+                        table.set("line_delta", d)?;
+                    }
+                    MouseScrollDelta::PixelDelta(delta) => {
+                        let d = delta.cast::<f32>();
+                        let d = LuaVec2(Vec2::new(d.x, d.y));
+                        table.set("pixel_delta", d)?;
+                    }
+                }
+            }
+            DeviceEvent::Motion { axis, value } => {
+                table.set("type", "motion")?;
+                table.set("axis", axis)?;
+                table.set("value", value)?;
+            }
+            DeviceEvent::Button { button, state } => {
+                table.set("type", "button")?;
+                table.set("button", button)?;
+
+                let state = match state {
+                    lyra_game::winit::ElementState::Pressed => "pressed",
+                    lyra_game::winit::ElementState::Released => "released",
+                };
+                table.set("state", state)?;
+            }
+            DeviceEvent::Key(raw_key_event) => {
+                table.set("type", "key")?;
+
+                let state = match raw_key_event.state {
+                    lyra_game::winit::ElementState::Pressed => "pressed",
+                    lyra_game::winit::ElementState::Released => "released",
+                };
+                table.set("state", state)?;
+
+                let e = KeyCode::from_raw_event(&raw_key_event);
+                let s = e.as_str();
+
+                if let Some(s) = s {
+                    table.set("code", s)?;
+                } else if let Some(un) = e.get_unknown() {
+                    match un {
+                        lyra_game::input::NativeKeyCode::Unidentified => {
+                            table.set("native", "unknown")?;
+                        }
+                        lyra_game::input::NativeKeyCode::Android(v) => {
+                            table.set("native", "android")?;
+                            table.set("native_code", *v)?;
+                        }
+                        lyra_game::input::NativeKeyCode::MacOS(v) => {
+                            table.set("native", "macos")?;
+                            table.set("native_code", *v)?;
+                        }
+                        lyra_game::input::NativeKeyCode::Windows(v) => {
+                            table.set("native", "windows")?;
+                            table.set("native_code", *v)?;
+                        }
+                        lyra_game::input::NativeKeyCode::Xkb(v) => {
+                            table.set("native", "xkb")?;
+                            table.set("native_code", *v)?;
+                        }
+                    }
+                }
+            }
+        }
+
+        table.into_lua(lua)
+    }
+}
+
+#[derive(Clone)]
+pub struct LuaDeviceEvent(pub(crate) DeviceEventPair);
+
+impl std::ops::Deref for LuaDeviceEvent {
+    type Target = DeviceEventPair;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl std::ops::DerefMut for LuaDeviceEvent {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+
+impl mlua::FromLua for LuaDeviceEvent {
+    fn from_lua(v: mlua::Value, _: &mlua::Lua) -> mlua::Result<Self> {
+        let ty = v.type_name();
+        let table = v.as_table().ok_or(mlua::Error::FromLuaConversionError {
+            from: ty,
+            to: "LuaDeviceEvent".into(),
+            message: Some("expected Lua Table".into()),
+        })?;
+
+        let id: LuaDeviceId = table.get("device")?;
+        let ev: LuaDeviceEventRaw = table.get("event")?;
+
+        Ok(Self(DeviceEventPair {
+            device_src: id,
+            event: ev,
+        }))
+    }
+}
+
+impl mlua::IntoLua for LuaDeviceEvent {
+    fn into_lua(self, lua: &mlua::Lua) -> mlua::Result<mlua::Value> {
+        let table = lua.create_table()?;
+        table.set("device", LuaDeviceId(self.device_src))?;
+        table.set("event", LuaDeviceEventRaw(self.event.clone()))?;
+
+        table.into_lua(lua)
+    }
+}
+
+impl LuaWrapper for LuaDeviceEvent {
+    type Wrap = DeviceEventPair;
+
+    #[inline(always)]
+    fn into_wrapped(self) -> Self::Wrap {
+        self.0
+    }
+}

lyra-scripting/src/lua/wrappers/mod.rs

@@ -17,4 +17,7 @@ mod camera;
 pub use camera::*;
 
 mod free_fly_camera;
-pub use free_fly_camera::*;
+pub use free_fly_camera::*;
+
+mod events;
+pub use events::*;