graphics: create Renderer struct

1 files changed, 93 insertions, 0 deletions

diff --git a/graphics/src/render.rs b/graphics/src/render.rs
new file mode 100644
index 0000000..6a566ce
--- /dev/null
+++ b/graphics/src/render.rs
@@ -0,0 +1,93 @@
+use dungeon::Dungeon;
+use raylib::{
+	color::Color,
+	prelude::{RaylibDraw, RaylibDrawHandle},
+};
+
+#[cfg(debug_assertions)]
+use raylib::RaylibHandle;
+
+/// Debug information used each frame
+#[cfg(debug_assertions)]
+pub struct DebugInfo {
+	pub fps: u32,
+}
+
+#[cfg(debug_assertions)]
+impl DebugInfo {
+	pub fn new(handle: &RaylibHandle) -> Self {
+		let fps = handle.get_fps();
+		Self { fps }
+	}
+}
+
+/// A `Renderer` is a renderer for a single
+/// frame of the game. It is created per frame.
+pub struct Renderer<'a> {
+	handle: RaylibDrawHandle<'a>,
+	#[cfg(debug_assertions)]
+	debug: DebugInfo,
+}
+impl<'a> Renderer<'a> {
+	/// Creates the renderer for the current frame
+	#[cfg(debug_assertions)]
+	pub(crate) fn new(handle: RaylibDrawHandle<'a>, debug: DebugInfo) -> Self {
+		Self { handle, debug }
+	}
+
+	/// Creates the renderer for the current frame
+	#[cfg(not(debug_assertions))]
+	pub(crate) fn new(handle: RaylibDrawHandle<'a>) -> Self {
+		Self { handle }
+	}
+
+	/// Returns the current render width
+	pub fn render_width(&mut self) -> i32 {
+		self.handle.get_render_width()
+	}
+
+	/// Returns the current render height
+	pub fn render_height(&mut self) -> i32 {
+		self.handle.get_render_height()
+	}
+
+	/// Clear the screen
+	pub fn clear(&mut self) {
+		self.handle.clear_background(Color::BLACK);
+	}
+
+	/// Draws an entire frame
+	pub fn draw_frame(&mut self, dungeon: &Dungeon) {
+		// Clear the background to black
+		self.clear();
+
+		// Draw the dungeon
+		self.draw_tiles(dungeon);
+		self.draw_player(dungeon);
+
+		// Draw fps (debug mode only)
+		#[cfg(debug_assertions)]
+		self.draw_fps(self.debug.fps);
+	}
+
+	/// Draw game over screen
+	pub fn draw_game_over(&mut self) {
+		// TODO:
+	}
+
+	/// Draw the player sprite
+	pub fn draw_player(&mut self, _dungeon: &Dungeon) {
+		// TODO:
+	}
+
+	/// Draw dungeon tiles
+	pub fn draw_tiles(&mut self, _dungeon: &Dungeon) {
+		// TODO:
+	}
+
+	/// Draw FPS counter
+	pub fn draw_fps(&mut self, fps: u32) {
+		let fps_str = format!("{fps}");
+		self.handle.draw_text(&fps_str, 10, 10, 30, Color::YELLOW);
+	}
+}