refactor, add simulation controls and board resetting

src/marble_engine/board.rs

@@ -1,3 +1,6 @@
+use std::collections::HashMap;
+
+use raylib::prelude::*;
 use super::tile::*;
 
 #[derive(Debug, Default, Clone, Copy, PartialEq)]
@@ -15,7 +18,7 @@ impl From<(usize, usize)> for Pos {
 	}
 }
 
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct Board {
 	rows: Vec<Vec<Tile>>,
 	width: usize,
@@ -84,4 +87,23 @@ impl Board {
 	pub fn height(&self) -> usize {
 		self.height
 	}
+
+	pub fn draw(
+		&self,
+		d: &mut RaylibDrawHandle,
+		textures: &HashMap<String, Texture2D>,
+		offset: Vector2,
+		zoom: i32,
+	){
+		let tile_size = 16 << zoom;
+		for x in 0..self.width {
+			for y in 0..self.height {
+				if let Some(tile) = self.get((x, y).into()) {
+					let px = x as i32 * tile_size + offset.x as i32 + tile_size / 2;
+					let py = y as i32 * tile_size + offset.y as i32 + tile_size / 2;
+					tile.draw(d, textures, px, py, tile_size, zoom);
+				}
+			}
+		}
+	}
 }