Added time of day, tick time, basic skybox shader and client to voxygen

client/Cargo.toml

@@ -5,6 +5,6 @@ authors = ["Joshua Barretto <joshua.s.barretto@gmail.com>"]
 edition = "2018"
 
 [dependencies]
-common = { path = "../common" }
+common = { package = "veloren-common", path = "../common" }
 
 specs = "0.14"

client/src/lib.rs

@@ -4,7 +4,8 @@ use std::time::Duration;
 // Internal
 use common::state::State;
 
-pub enum ClientErr {
+#[derive(Debug)]
+pub enum Error {
     ServerShutdown,
     Other(String),
 }
@@ -20,14 +21,21 @@ pub struct Client {
 }
 
 impl Client {
+    /// Create a new `Client`.
     pub fn new() -> Self {
         Self {
             state: State::new(),
         }
     }
 
+    /// Get a reference to the client's game state.
+    pub fn state(&self) -> &State { &self.state }
+
+    /// Get a mutable reference to the client's game state.
+    pub fn state_mut(&mut self) -> &mut State { &mut self.state }
+
     /// Execute a single client tick, handle input and update the game state by the given duration
-    pub fn tick(&mut self, input: Input, dt: Duration) -> Result<(), ClientErr> {
+    pub fn tick(&mut self, input: Input, dt: Duration) -> Result<(), Error> {
         // This tick function is the centre of the Veloren universe. Most client-side things are
         // managed from here, and as such it's important that it stays organised. Please consult
         // the core developers before making significant changes to this code. Here is the

common/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "common"
+name = "veloren-common"
 version = "0.1.0"
 authors = ["Joshua Barretto <joshua.s.barretto@gmail.com>"]
 edition = "2018"

common/src/clock.rs

@@ -0,0 +1,50 @@
+// Standard
+use std::{
+    thread,
+    time::{Duration, SystemTime},
+};
+
+const CLOCK_SMOOTHING: f64 = 0.9;
+
+pub struct Clock {
+    last_sys_time: SystemTime,
+    last_delta: Option<Duration>,
+    running_tps_average: f64,
+}
+
+impl Clock {
+    pub fn new() -> Self {
+        Self {
+            last_sys_time: SystemTime::now(),
+            last_delta: None,
+            running_tps_average: 0.0,
+        }
+    }
+
+    pub fn get_tps(&self) -> f64 { self.running_tps_average }
+
+    pub fn get_last_delta(&self) -> Duration { self.last_delta.unwrap_or(Duration::new(0, 0)) }
+
+    pub fn get_avg_delta(&self) -> Duration { Duration::from_float_secs(self.running_tps_average) }
+
+    pub fn tick(&mut self, tgt: Duration) {
+        let delta = SystemTime::now()
+            .duration_since(self.last_sys_time)
+            .expect("Time went backwards!");
+
+        // Attempt to sleep to fill the gap
+        if let Some(sleep_dur) = tgt.checked_sub(delta) {
+            thread::sleep(sleep_dur);
+        }
+
+        let delta = SystemTime::now()
+            .duration_since(self.last_sys_time)
+            .expect("Time went backwards!");
+
+        self.last_sys_time = SystemTime::now();
+        self.last_delta = Some(delta);
+        self.running_tps_average =
+            CLOCK_SMOOTHING * self.running_tps_average +
+            (1.0 - CLOCK_SMOOTHING) * delta.as_float_secs();
+    }
+}

common/src/lib.rs

@@ -1,5 +1,6 @@
-#![feature(euclidean_division)]
+#![feature(euclidean_division, duration_float)]
 
+pub mod clock;
 pub mod comp;
 pub mod state;
 pub mod terrain;

common/src/state.rs

@@ -11,8 +11,18 @@ use crate::{
     vol::VolSize,
 };
 
-// A type used to represent game state stored on both the client and the server. This includes
-// things like entity components, terrain data, and global state like weather, time of day, etc.
+/// How much faster should an in-game day be compared to a real day?
+// TODO: Don't hard-code this
+const DAY_CYCLE_FACTOR: f64 = 24.0 * 60.0;
+
+/// A resource to store the time of day
+struct TimeOfDay(f64);
+
+/// A resource to store the tick (i.e: physics) time
+struct Tick(f64);
+
+/// A type used to represent game state stored on both the client and the server. This includes
+/// things like entity components, terrain data, and global state like weather, time of day, etc.
 pub struct State {
     ecs_world: EcsWorld,
     terrain_map: TerrainMap,
@@ -20,9 +30,15 @@ pub struct State {
 }
 
 impl State {
+    /// Create a new `State`.
     pub fn new() -> Self {
         let mut ecs_world = EcsWorld::new();
 
+        // Register resources used by the ECS
+        ecs_world.add_resource(TimeOfDay(0.0));
+        ecs_world.add_resource(Tick(0.0));
+
+        // Register common components with the state
         comp::register_local_components(&mut ecs_world);
 
         Self {
@@ -32,8 +48,24 @@ impl State {
         }
     }
 
-    // Execute a single tick, simulating the game state by the given duration
+    /// Get the current in-game time of day.
+    ///
+    /// Note that this should not be used for physics, animations or other such localised timings.
+    pub fn get_time_of_day(&self) -> f64 {
+        self.ecs_world.read_resource::<TimeOfDay>().0
+    }
+
+    /// Get the current in-game tick time.
+    ///
+    /// Note that this does not correspond to the time of day.
+    pub fn get_tick(&self) -> f64 {
+        self.ecs_world.read_resource::<Tick>().0
+    }
+
+    /// Execute a single tick, simulating the game state by the given duration.
     pub fn tick(&mut self, dt: Duration) {
-        println!("Ticked!");
+        // Change the time accordingly
+        self.ecs_world.write_resource::<TimeOfDay>().0 += dt.as_float_secs() * DAY_CYCLE_FACTOR;
+        self.ecs_world.write_resource::<Tick>().0 += dt.as_float_secs();
     }
 }

server/Cargo.toml

@@ -1,10 +1,10 @@
 [package]
-name = "server"
+name = "veloren-server"
 version = "0.1.0"
 authors = ["Joshua Barretto <joshua.s.barretto@gmail.com>"]
 edition = "2018"
 
 [dependencies]
-common = { path = "../common" }
+common = { package = "veloren-common", path = "../common" }
 
 specs = "0.14"

server/src/lib.rs

@@ -4,8 +4,8 @@ use std::time::Duration;
 // Internal
 use common::state::State;
 
-pub enum ClientErr {
-    ServerShutdown,
+#[derive(Debug)]
+pub enum Error {
     Other(String),
 }
 
@@ -20,14 +20,21 @@ pub struct Server {
 }
 
 impl Server {
+    /// Create a new `Server`.
     pub fn new() -> Self {
         Self {
             state: State::new(),
         }
     }
 
+    /// Get a reference to the client's game state.
+    pub fn state(&self) -> &State { &self.state }
+
+    /// Get a mutable reference to the client's game state.
+    pub fn state_mut(&mut self) -> &mut State { &mut self.state }
+
     /// Execute a single server tick, handle input and update the game state by the given duration
-    pub fn tick(&mut self, input: Input, dt: Duration) -> Result<(), ClientErr> {
+    pub fn tick(&mut self, input: Input, dt: Duration) -> Result<(), Error> {
         // This tick function is the centre of the Veloren universe. Most server-side things are
         // managed from here, and as such it's important that it stays organised. Please consult
         // the core developers before making significant changes to this code. Here is the

voxygen/Cargo.toml

@@ -10,7 +10,8 @@ gl = ["gfx_device_gl"]
 default = []
 
 [dependencies]
-common = { path = "../common" }
+common = { package = "veloren-common", path = "../common" }
+client = { package = "veloren-client", path = "../client" }
 
 # Graphics
 gfx = "0.17"

voxygen/shaders/skybox.frag

@@ -20,6 +20,27 @@ uniform u_globals {
 
 out vec4 tgt_color;
 
-void main() {
-	tgt_color = vec4(f_pos, 1.0);
+const float PI = 3.141592;
+
+vec3 get_sky_color(vec3 dir, float time_of_day) {
+	const float TIME_FACTOR = (PI * 2.0) / (3600.0 * 24.0);
+
+	const vec3 SKY_TOP    = vec3(0.0, 0.3, 1.0);
+	const vec3 SKY_BOTTOM = vec3(0.0, 0.05, 0.2);
+
+	const vec3 SUN_HALO_COLOR  = vec3(1.0, 0.8, 0.5);
+	const vec3 SUN_SURF_COLOR  = vec3(1.0, 0.8, 0.5);
+
+	float sun_angle_rad = time_of_day * TIME_FACTOR;
+	vec3 sun_dir = vec3(sin(sun_angle_rad), 0.0, cos(sun_angle_rad));
+
+	vec3 sun_halo = pow(max(dot(dir, sun_dir), 0.0), 8.0) * SUN_HALO_COLOR;
+	vec3 sun_surf = min(pow(max(dot(dir, sun_dir), 0.0) + 0.01, 16.0), 1.0) * SUN_SURF_COLOR;
+	vec3 sun_light = sun_halo + sun_surf;
+
+	return mix(SKY_BOTTOM, SKY_TOP, (dir.z + 1.0) / 2.0) + sun_light * 0.5;
+}
+
+void main() {
+	tgt_color = vec4(get_sky_color(normalize(f_pos), time_of_day.x), 1.0);
 }

voxygen/src/error.rs

@@ -1,12 +1,17 @@
 // Standard
 use std::any;
 
+// Project
+use client;
+
 // Crate
 use crate::render::RenderError;
 
 /// Represents any error that may be triggered by Voxygen
 #[derive(Debug)]
 pub enum Error {
+    /// An error relating to the internal client
+    ClientError(client::Error),
     /// A miscellaneous error relating to a backend dependency
     BackendError(Box<any::Any>),
     /// An error relating the rendering subsystem
@@ -20,3 +25,9 @@ impl From<RenderError> for Error {
         Error::RenderError(err)
     }
 }
+
+impl From<client::Error> for Error {
+    fn from(err: client::Error) -> Self {
+        Error::ClientError(err)
+    }
+}

voxygen/src/render/pipelines/mod.rs

@@ -20,8 +20,9 @@ gfx_defines! {
         proj_mat: [[f32; 4]; 4] = "proj_mat",
         cam_pos: [f32; 4] = "cam_pos",
         focus_pos: [f32; 4] = "focus_pos",
+        // TODO: Fix whatever alignment issue requires these uniforms to be aligned
         view_distance: [f32; 4] = "view_distance",
-        time_of_day: [f32; 4] = "time_of_day",
+        time_of_day: [f32; 4] = "time_of_day", // TODO: Make this f64
         time: [f32; 4] = "time",
     }
 }
@@ -47,7 +48,7 @@ impl Globals {
         cam_pos: Vec3<f32>,
         focus_pos: Vec3<f32>,
         view_distance: f32,
-        time_of_day: f32,
+        time_of_day: f64,
         time: f32,
     ) -> Self {
         Self {
@@ -56,7 +57,7 @@ impl Globals {
             cam_pos: Vec4::from(cam_pos).into_array(),
             focus_pos: Vec4::from(focus_pos).into_array(),
             view_distance: [view_distance; 4],
-            time_of_day: [time_of_day; 4],
+            time_of_day: [time_of_day as f32; 4],
             time: [time; 4],
         }
     }

voxygen/src/scene/mod.rs

@@ -1,10 +1,20 @@
 pub mod camera;
 
+// Standard
+use std::time::Duration;
+
 // Library
 use vek::*;
 
+// Project
+use client::{
+    self,
+    Client,
+};
+
 // Crate
 use crate::{
+    Error,
     render::{
         Consts,
         Globals,
@@ -32,6 +42,8 @@ pub struct Scene {
     camera: Camera,
     globals: Consts<Globals>,
     skybox: Skybox,
+
+    client: Client,
 }
 
 impl Scene {
@@ -50,9 +62,17 @@ impl Scene {
                     .create_consts_with(SkyboxLocals::default())
                     .unwrap(),
             },
+
+            client: Client::new(),
         }
     }
 
+    /// Tick the scene (and the client attached to it)
+    pub fn tick(&mut self, dt: Duration) -> Result<(), Error> {
+        self.client.tick(client::Input {}, dt)?;
+        Ok(())
+    }
+
     /// Handle an incoming user input event (i.e: cursor moved, key pressed, window closed, etc.).
     pub fn handle_input_event(&mut self, event: Event) -> bool {
         match event {
@@ -78,7 +98,7 @@ impl Scene {
             cam_pos,
             self.camera.get_focus_pos(),
             10.0,
-            0.0,
+            self.client.state().get_time_of_day(),
             0.0,
         ))
             .expect("Failed to update global constants");

voxygen/src/session.rs

@@ -1,6 +1,12 @@
+// Standard
+use std::time::Duration;
+
 // Library
 use vek::*;
 
+// Project
+use common::clock::Clock;
+
 // Crate
 use crate::{
     PlayState,
@@ -11,6 +17,8 @@ use crate::{
     scene::Scene,
 };
 
+const FPS: u64 = 60;
+
 pub struct SessionState {
     scene: Scene,
 }
@@ -29,11 +37,33 @@ impl SessionState {
 // The background colour
 const BG_COLOR: Rgba<f32> = Rgba { r: 0.0, g: 0.3, b: 1.0, a: 1.0 };
 
+impl SessionState {
+    /// Render the session to the screen.
+    ///
+    /// This method should be called once per frame.
+    pub fn render(&mut self, renderer: &mut Renderer) {
+        // Maintain scene GPU data
+        self.scene.maintain_gpu_data(renderer);
+
+        // Clear the screen
+        renderer.clear(BG_COLOR);
+
+        // Render the screen using the global renderer
+        self.scene.render_to(renderer);
+
+        // Finish the frame
+        renderer.flush();
+    }
+}
+
 impl PlayState for SessionState {
     fn play(&mut self, global_state: &mut GlobalState) -> PlayStateResult {
         // Trap the cursor
         global_state.window.trap_cursor();
 
+        // Set up an fps clock
+        let mut clock = Clock::new();
+
         // Game loop
         loop {
             // Handle window events
@@ -48,20 +78,20 @@ impl PlayState for SessionState {
                 // TODO: Do something if the event wasn't handled?
             }
 
-            // Maintain scene GPU data
-            self.scene.maintain_gpu_data(global_state.window.renderer_mut());
+            // Perform an in-game tick
+            self.scene.tick(clock.get_last_delta())
+                .expect("Failed to tick the scene");
 
-            // Clear the screen
-            global_state.window.renderer_mut().clear(BG_COLOR);
+            // Render the session
+            self.render(global_state.window.renderer_mut());
 
-            // Render the screen using the global renderer
-            self.scene.render_to(global_state.window.renderer_mut());
-
-            // Finish the frame
-            global_state.window.renderer_mut().flush();
+            // Display the frame on the window
             global_state.window
                 .swap_buffers()
                 .expect("Failed to swap window buffers");
+
+            // Wait for the next tick
+            clock.tick(Duration::from_millis(1000 / FPS));
         }
     }