prepping to start shader work

game/Cargo.toml

@@ -16,6 +16,7 @@ thiserror = "1.0"
 chrono = "0.4"
 rust-embed = "6.2.0"
 raylib = "3.5"
+# cgmath = "0.18"
 
 [profile.release]
 lto = true

game/assets/configs/application.json

@@ -0,0 +1,8 @@
+{
+    "name": "Unnamed game",
+    "authors": [
+        {
+            "github": "ewpratten"
+        }
+    ]
+}

game/assets/shaders/pixelart.fs

@@ -0,0 +1,38 @@
+#version 330
+
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// Output fragment color
+out vec4 finalColor;
+
+// Viewport dimensions
+const vec2 viewport = vec2(1080.0, 720.0);
+
+// Pixel scaling
+const vec2 pixelScale = vec2(2.0, 2.0);
+
+void main()
+{
+
+    // Calculate the distance to merge pixels
+    float dx = pixelScale.x * (1.0 / viewport.x);
+    float dy = pixelScale.y * (1.0 / viewport.y);
+
+    // Get the base UV coordinate of the pixel
+    vec2 baseUV = fragTexCoord;
+
+    // Calculate a UV for this new blocky pixel
+    vec2 pixelatedUV = vec2(dx * floor(baseUV.x / dx), dy * floor(baseUV.y / dy));
+
+    // Rebuild the texture with the new UVs
+    vec3 tc = texture(texture0, pixelatedUV).rgb;
+
+    // Build the final pixel
+    finalColor = vec4(tc, 1.0);
+}

game/src/lib.rs

@@ -1,10 +1,12 @@
 use discord_sdk::activity::ActivityBuilder;
+use raylib::prelude::*;
 use tracing::error;
 use utilities::{
     datastore::StaticGameData,
     discord::{DiscordConfig, DiscordRpcClient},
+    game_config::GameConfig,
+    math::rotate_vector,
 };
-use raylib::prelude::*;
 
 #[macro_use]
 extern crate thiserror;
@@ -15,30 +17,41 @@ mod utilities;
 
 /// The game entrypoint
 pub async fn game_begin() {
+    // Load the general config for the game
+    let game_config = GameConfig::load(
+        StaticGameData::get("configs/application.json").expect("Failed to load application.json"),
+    )
+    .expect("Could not load general game config data");
+
     // Attempt to connect to a locally running Discord instance for rich presence access
     let discord_config = DiscordConfig::load(
         StaticGameData::get("configs/discord.json").expect("Failed to load discord.json"),
     )
     .expect("Could not load Discord config data");
-    let discord_rpc =
-        match DiscordRpcClient::new(discord_config.app_id, discord_sdk::Subscriptions::ACTIVITY)
-            .await
-        {
-            Ok(client) => Some(client),
-            Err(err) => {
-                error!("Could not connect to or find a locally running Discord instance.");
-                error!("Discord connection error: {:?}", err);
-                None
-            }
-        };
+    // let discord_rpc =
+    //     match DiscordRpcClient::new(discord_config.app_id, discord_sdk::Subscriptions::ACTIVITY)
+    //         .await
+    //     {
+    //         Ok(client) => Some(client),
+    //         Err(err) => {
+    //             error!("Could not connect to or find a locally running Discord instance.");
+    //             error!("Discord connection error: {:?}", err);
+    //             None
+    //         }
+    //     };
 
-    if let Some(rpc) = discord_rpc {
-        rpc.set_rich_presence(ActivityBuilder::default().details("Testing...")).await.unwrap();
-    }
+    // if let Some(rpc) = discord_rpc {
+    //     rpc.set_rich_presence(ActivityBuilder::default().details("Testing..."))
+    //         .await
+    //         .unwrap();
+    // }
 
     let (mut rl, thread) = raylib::init()
         .size(640, 480)
-        .title("Hello, World")
+        .title(&game_config.name)
+        .vsync()
+        .msaa_4x()
+        .resizable()
         .build();
 
     while !rl.window_should_close() {
@@ -46,5 +59,14 @@ pub async fn game_begin() {
 
         d.clear_background(Color::WHITE);
         d.draw_text("Hello, world!", 12, 12, 20, Color::BLACK);
+
+        let angle = (d.get_time() as f32 * 80.0).to_radians();
+        let screen_center = Vector2::new(d.get_screen_width() as f32 / 2.0, d.get_screen_height() as f32 / 2.0);
+        let top = rotate_vector(Vector2::new(0.0, -100.0), angle) + screen_center;
+        let right = rotate_vector(Vector2::new(100.0, 0.0), angle) + screen_center;
+        let left = rotate_vector(Vector2::new(-100.0, 0.0), angle) + screen_center;
+
+        d.draw_triangle(top, left, right, Color::BLACK);
+        d.draw_fps(10, 100);
     }
 }

game/src/utilities/game_config.rs

@@ -0,0 +1,21 @@
+//! Contains the general configuration data for the game
+
+use rust_embed::EmbeddedFile;
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct Author {
+    pub github: String,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct GameConfig {
+    pub name: String,
+    pub authors: Vec<Author>,
+}
+
+impl GameConfig {
+    /// Load from a file
+    pub fn load(file: EmbeddedFile) -> Result<Self, serde_json::Error> {
+        serde_json::from_slice(&file.data)
+    }
+}

game/src/utilities/math.rs

@@ -0,0 +1,9 @@
+use raylib::math::Vector2;
+
+/// Rotate a vector by an angle
+pub fn rotate_vector(vector: Vector2, angle_rad: f32) -> Vector2 {
+    return Vector2 {
+        x: (vector.x * angle_rad.cos()) - (vector.y * angle_rad.sin()),
+        y: (vector.y * angle_rad.cos()) + (vector.x * angle_rad.sin()),
+    };
+}

game/src/utilities/mod.rs

@@ -1,2 +1,4 @@
 pub mod discord;
-pub mod datastore;
+pub mod datastore;
+pub mod game_config;
+pub mod math;