now draw at the tile level

1 files changed, 65 insertions, 0 deletions

diff --git a/src/tile.rs b/src/tile.rs
new file mode 100644
index 0000000..21b6a79
--- /dev/null
+++ b/src/tile.rs
@@ -0,0 +1,65 @@
+use ggez::graphics::{spritebatch::SpriteBatch, DrawParam, Rect};
+use ggez::nalgebra::{Point2, Vector2};
+
+use crate::constants;
+use crate::math::convert_angle_to_rad;
+use crate::tileset::Tileset;
+
+pub struct Tile {
+    //id: u32,
+    source: Rect,
+    //animation: Option<Vec<(u32, Rect)>>,
+    rotate: f32,
+    destination: Point2<f32>,
+}
+
+impl Tile {
+    pub fn new(text: &str, i: usize, tileset: &Tileset, width: usize, height: usize) -> Tile {
+        let id = text.parse::<usize>().unwrap();
+
+        //let flip_d = (id & constants::FLIP_DIAGONAL_FLAG) == constants::FLIP_DIAGONAL_FLAG;
+        let flip_h = (id & constants::FLIP_HORIZONTAL_FLAG) == constants::FLIP_HORIZONTAL_FLAG;
+        let flip_v = (id & constants::FLIP_VERTICAL_FLAG) == constants::FLIP_VERTICAL_FLAG;
+
+        let id = if flip_h | flip_v {
+            id & !constants::ALL_FLIP_FLAGS
+        } else {
+            id
+        };
+
+        let rotate = match (flip_h, flip_v) {
+            (true, false) => convert_angle_to_rad(90.0),
+            (true, true) => convert_angle_to_rad(180.0),
+            (false, true) => convert_angle_to_rad(270.0),
+            (false, false) => 0.0,
+        };
+
+        let x = i as f32 % width as f32;
+        let y = (i as f32 / height as f32).floor();
+        let offset = (constants::TILE_WIDTH / 2.0) * constants::TILE_SCALE;
+
+        let destination = Point2::new(
+            (constants::TILE_WIDTH * constants::TILE_SCALE * x) + offset,
+            (constants::TILE_HEIGHT * constants::TILE_SCALE * y) + offset,
+        );
+
+        Tile {
+            //id,
+            source: tileset.tiles[id as usize],
+            //animation: None,
+            rotate,
+            destination,
+        }
+    }
+
+    pub fn draw(&self, spritebatch: &mut SpriteBatch) {
+        let draw_param = DrawParam::default()
+            .src(self.source)
+            .rotation(self.rotate)
+            .offset(Point2::new(0.5, 0.5))
+            .dest(self.destination)
+            .scale(Vector2::new(constants::TILE_SCALE, constants::TILE_SCALE));
+
+        spritebatch.add(draw_param);
+    }
+}