Add non-working hue transform code

Cargo.lock

@@ -23,6 +23,12 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "colors-transform"
+version = "0.2.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9226dbc05df4fb986f48d730b001532580883c4c06c5d1c213f4b34c1c157178"
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -82,6 +88,7 @@ checksum = "b15813163c1d831bf4a13c3610c05c0d03b39feb07f7e09fa234dac9b15aaf39"
 name = "pacman"
 version = "0.1.0"
 dependencies = [
+ "colors-transform",
  "lazy_static",
  "sdl2",
  "spin_sleep",

Cargo.toml

@@ -6,6 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+colors-transform = "0.2.11"
 lazy_static = "1.4.0"
 sdl2 = { version = "0.35", features = ["image", "ttf", "mixer"] }
 spin_sleep = "1.1.1"

src/main.rs

@@ -1,3 +1,4 @@
+use colors_transform::Color;
 use sdl2::event::{Event, WindowEvent};
 use sdl2::keyboard::Keycode;
 use std::time::{Duration, Instant};
@@ -49,6 +50,8 @@ pub fn main() {
     let mut paused = false;
     let mut shown = false;
 
+    let mut hue: u16 = 0;
+
     event!(
         tracing::Level::INFO,
         "Starting game loop ({:.3}ms)",
@@ -108,10 +111,28 @@ pub fn main() {
             let mouse_x = mouse_state.x();
             let mouse_y = mouse_state.y();
             let square = sdl2::rect::Rect::new(mouse_x - 25, mouse_y - 25, 50, 50);
-            canvas.set_draw_color(sdl2::pixels::Color::RGB(255, 255, 255));
+            
+            // convert hue to rgb
+            let hue_rgb = colors_transform::Hsl::from(hue as f32, 100.0, 100.0).to_rgb();
+            let color = sdl2::pixels::Color::RGB(hue_rgb.get_red() as u8, hue_rgb.get_green() as u8, hue_rgb.get_blue() as u8);
+
+            event!(
+                tracing::Level::DEBUG,
+                "Drawing square at ({}, {}) with color {:?}",
+                mouse_x,
+                mouse_y,
+                color
+            );
+
+            canvas.set_draw_color(color);
             canvas.fill_rect(square).unwrap();
             
             canvas.present();
+
+            hue += 1;
+            if hue >= 360 {
+                hue = 0;
+            }
         }
 
         if start.elapsed() < loop_time {