add example for window

agb/examples/windows.rs

@@ -0,0 +1,55 @@
+#![no_std]
+#![no_main]
+
+use agb::display::{example_logo, tiled::RegularBackgroundSize, window::WinIn};
+use agb::display::{HEIGHT, WIDTH};
+use agb::fixnum::{Num, Rect, Vector2D};
+use agb::interrupt::VBlank;
+
+type FNum = Num<i32, 8>;
+
+#[agb::entry]
+fn entry(mut gba: agb::Gba) -> ! {
+    main(gba)
+}
+
+fn main(mut gba: agb::Gba) -> ! {
+    let (gfx, mut vram) = gba.display.video.tiled0();
+
+    let mut map = gfx.background(
+        agb::display::Priority::P0,
+        RegularBackgroundSize::Background32x32,
+    );
+    let mut window = gba.display.window.get();
+    window
+        .win_in(WinIn::Win0)
+        .set_background_enable(map.background(), true)
+        .set_position(&Rect::new((10, 10).into(), (64, 64).into()))
+        .enable();
+
+    example_logo::display_logo(&mut map, &mut vram);
+
+    let mut pos: Vector2D<FNum> = (10, 10).into();
+    let mut velocity: Vector2D<FNum> = Vector2D::new(1.into(), 1.into());
+
+    let vblank = VBlank::get();
+
+    loop {
+        pos += velocity;
+
+        if pos.x.floor() > WIDTH - 64 || pos.x.floor() < 0 {
+            velocity.x *= -1;
+        }
+
+        if pos.y.floor() > HEIGHT - 64 || pos.y.floor() < 0 {
+            velocity.y *= -1;
+        }
+
+        window
+            .win_in(WinIn::Win0)
+            .set_position(&Rect::new(pos.floor(), (64, 64).into()));
+
+        vblank.wait_for_vblank();
+        window.commit();
+    }
+}