From cccfb66c7c58bf464252e942ef2b742b41ece19e Mon Sep 17 00:00:00 2001
From: tom barrett <spalf0@gmail.com>
Date: Sat, 22 Jun 2019 10:11:18 -0500
Subject: now draw at the tile level

---
 src/map.rs | 75 ++++++--------------------------------------------------------
 1 file changed, 7 insertions(+), 68 deletions(-)

(limited to 'src/map.rs')

diff --git a/src/map.rs b/src/map.rs
index bb5f694..38fb326 100644
--- a/src/map.rs
+++ b/src/map.rs
@@ -1,10 +1,9 @@
 use ggez::filesystem::File;
-use ggez::graphics::{spritebatch::SpriteBatch, DrawParam};
-use ggez::nalgebra::{Point2, Vector2};
-use std::f32::consts::PI;
+use ggez::graphics::spritebatch::SpriteBatch;
 use xml::reader::XmlEvent::Characters;
 
 use crate::constants;
+use crate::layer::Layer;
 use crate::tileset::Tileset;
 use crate::xmlelements::XMLElements;
 
@@ -15,17 +14,18 @@ pub struct Map {
 }
 
 impl Map {
-    pub fn new(file: File) -> Map {
+    pub fn new(file: File, tileset: &Tileset) -> Map {
         let elements = XMLElements::new(file);
 
         let width = elements.get_element_attribute("map", "width").unwrap();
         let height = elements.get_element_attribute("map", "height").unwrap();
+
         let layers = elements
             .events
             .iter()
             .filter_map(|e| {
                 if let Characters(text) = e {
-                    Some(Layer::new(text.to_string()))
+                    Some(Layer::new(text, tileset, width, height))
                 } else {
                     None
                 }
@@ -39,28 +39,9 @@ impl Map {
         }
     }
 
-    pub fn draw(&self, spritebatch: &mut SpriteBatch, tileset: &Tileset) {
+    pub fn draw(&self, spritebatch: &mut SpriteBatch) {
         for layer in self.layers.iter() {
-            for x in 0..self.width {
-                for y in 0..self.height {
-                    let tile_id = layer.data[x + (y * self.height)];
-                    let (tile_id, rotate) = self.decode(tile_id as u32);
-
-                    let offset = (constants::TILE_WIDTH / 2.0) * constants::TILE_SCALE;
-
-                    let draw_param = DrawParam::default()
-                        .src(tileset.tiles[tile_id as usize])
-                        .rotation(rotate)
-                        .offset(Point2::new(0.5, 0.5))
-                        .dest(Point2::new(
-                            (constants::TILE_WIDTH * constants::TILE_SCALE * x as f32) + offset,
-                            (constants::TILE_HEIGHT * constants::TILE_SCALE * y as f32) + offset,
-                        ))
-                        .scale(Vector2::new(constants::TILE_SCALE, constants::TILE_SCALE));
-
-                    spritebatch.add(draw_param);
-                }
-            }
+            layer.draw(spritebatch);
         }
     }
 
@@ -70,46 +51,4 @@ impl Map {
             (constants::TILE_HEIGHT * constants::TILE_SCALE) * self.height as f32,
         )
     }
-
-    fn decode(&self, tile_id: u32) -> (u32, f32) {
-        //let flip_d = (tile_id & constants::FLIP_DIAGONALLY_FLAG) == constants::FLIP_DIAGONALLY_FLAG;
-        let flip_h =
-            (tile_id & constants::FLIP_HORIZONTALLY_FLAG) == constants::FLIP_HORIZONTALLY_FLAG;
-        let flip_v = (tile_id & constants::FLIP_VERTICALLY_FLAG) == constants::FLIP_VERTICALLY_FLAG;
-
-        let new_tile_id = if flip_h | flip_v {
-            tile_id & !constants::ALL_FLIP_FLAGS
-        } else {
-            tile_id
-        };
-
-        let rotate = match (flip_h, flip_v) {
-            (true, false) => self.convert_angle_to_rad(90.0),
-            (true, true) => self.convert_angle_to_rad(180.0),
-            (false, true) => self.convert_angle_to_rad(270.0),
-            (false, false) => 0.0,
-        };
-
-        (new_tile_id, rotate)
-    }
-
-    fn convert_angle_to_rad(&self, angle: f32) -> f32 {
-        angle * (PI / 180.0)
-    }
-}
-
-pub struct Layer {
-    pub data: Vec<usize>,
-}
-
-impl Layer {
-    pub fn new(text: String) -> Layer {
-        Layer {
-            data: text
-                .replace("\n", "")
-                .split(',')
-                .map(|s| s.parse().unwrap())
-                .collect(),
-        }
-    }
 }
-- 
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