Implement rect.rs: move a rectangle using keyboard keys

.gitignore

@@ -0,0 +1 @@
+bin/

Makefile

@@ -0,0 +1,2 @@
+rect: rect.rs
+	rustc -L. -lraylib $< -o bin/$@

README.md

@@ -0,0 +1,3 @@
+# Rust and raylib playground
+
+A sample project to play with rust, raylib, and rust/c interoperability

main.rs

@@ -1,14 +0,0 @@
-mod raylib;
-
-fn main() {
-    raylib::init_window(800, 600, "Hello, raylib");
-    while !raylib::window_should_close() {
-        raylib::begin_drawing();
-            raylib::draw_rect(0, 0, 100, 200, raylib::Color(255, 0, 0, 255));
-            if raylib::is_key_pressed(raylib::Key::Z) {
-                raylib::draw_rect(200, 200, 100, 100, raylib::Color(0, 255, 0, 0));
-            }
-        raylib::end_drawing();
-    }
-}
-

raylib.rs

@@ -6,16 +6,27 @@ pub struct Color(pub u8, pub u8, pub u8, pub u8);
 #[link(name = "raylib")]
 extern {
     fn InitWindow(width: u32, height: u32, title: *const c_char);
+    fn ClearBackground(color: Color);
     fn WindowShouldClose() -> bool;
+    fn SetTargetFPS(fps: u32);
     fn BeginDrawing();
     fn EndDrawing();
     fn DrawRectangle(pos_x: u32, pos_y: u32, width: u32, height: u32, color: Color);
-    fn IsKeyPressed(key: u32) -> bool;
+    fn IsKeyDown(key: u32) -> bool;
 }
 
 #[derive(Copy, Clone)]
 pub enum Key {
-    Z = 89,
+    W = 87,
+    S = 83,
+    A = 65,
+    D = 68,
+}
+
+pub mod colors {
+    use super::Color;
+    pub const RED: Color = Color(255, 0, 0, 255);
+    pub const BLACK: Color = Color(0, 0, 0, 0);
 }
 
 pub fn init_window(width: u32, height: u32, title: &str) {
@@ -25,10 +36,18 @@ pub fn init_window(width: u32, height: u32, title: &str) {
     }
 }
 
+pub fn clear_background(c: Color) {
+    unsafe { ClearBackground(c); }
+}
+
 pub fn window_should_close() -> bool {
     unsafe { WindowShouldClose() }
 }
 
+pub fn set_target_fps(fps: u32) {
+    unsafe { SetTargetFPS(fps); }
+}
+
 pub fn begin_drawing() {
     unsafe { BeginDrawing(); }
 }
@@ -41,14 +60,7 @@ pub fn draw_rect(pos_x: u32, pos_y: u32, width:u32, height: u32, color: Color) {
     unsafe { DrawRectangle(pos_x, pos_y, width, height, color); }
 }
 
-pub fn is_key_pressed(key: Key) -> bool {
-    let key = key as u32;
-    unsafe { 
-        let ret = IsKeyPressed(key);
-        if ret {
-            println!("is_key_pressed({key})");
-        }
-        ret
-    }
+pub fn is_key_down(key: Key) -> bool {
+    unsafe { IsKeyDown(key as u32) }
 }
 

readme

@@ -1 +0,0 @@
-rustc -L. -lraylib test.rs && ./test

rect.rs

@@ -0,0 +1,35 @@
+mod raylib;
+
+pub struct Vector2<S> {
+    pub x: S,
+    pub y: S,
+}
+
+fn main() {
+    let screen = Vector2::<u32> { x: 800, y: 600 };
+    let mut pos = Vector2::<u32> {
+        x: screen.x / 2,
+        y: screen.y / 2
+    };
+    raylib::init_window(screen.x, screen.y, "Hello, raylib");
+    raylib::set_target_fps(60);
+
+    while !raylib::window_should_close() {
+        raylib::begin_drawing();
+            raylib::clear_background(raylib::colors::BLACK);
+            
+            if raylib::is_key_down(raylib::Key::W) {
+                pos.y -= 10;
+            } else if raylib::is_key_down(raylib::Key::S) {
+                pos.y += 10;
+            } else if raylib::is_key_down(raylib::Key::A) {
+                pos.x -= 10;
+            } else if raylib::is_key_down(raylib::Key::D) {
+                pos.x += 10;
+            }
+            
+            raylib::draw_rect(pos.x, pos.y, 100, 100, raylib::colors::RED);
+        raylib::end_drawing();
+    }
+}
+