layers now supported

1 files changed, 59 insertions, 0 deletions

diff --git a/src/tileset.rs b/src/tileset.rs
new file mode 100644
index 0000000..21e31d1
--- /dev/null
+++ b/src/tileset.rs
@@ -0,0 +1,59 @@
+use ggez::filesystem::File;
+use ggez::graphics::Rect;
+use std::io::BufReader;
+use xml::reader::{EventReader, XmlEvent};
+
+pub struct Tileset {
+    pub tiles: Vec<Rect>,
+    pub tile_width: f32,
+    pub tile_height: f32,
+}
+
+impl Tileset {
+    pub fn new(file: File) -> Tileset {
+        let mut tile_width = None;
+        let mut tile_height = None;
+        let mut columns = None;
+        let mut height = None;
+
+        for e in EventReader::new(BufReader::new(file)) {
+            if let Ok(XmlEvent::StartElement { attributes, .. }) = e {
+                for attribute in attributes {
+                    match attribute.name.local_name.as_str() {
+                        "columns" => columns = Some(attribute.value.parse::<usize>().unwrap()),
+                        "tilewidth" => tile_width = Some(attribute.value.parse::<f32>().unwrap()),
+                        "tileheight" => tile_height = Some(attribute.value.parse::<f32>().unwrap()),
+                        "height" => height = Some(attribute.value.parse::<usize>().unwrap()),
+                        _ => (),
+                    }
+                }
+            }
+        }
+
+        let columns = columns.unwrap();
+        let tile_height = tile_height.unwrap();
+        let tile_width = tile_width.unwrap();
+        let height = height.unwrap();
+
+        let rows = height / (tile_height as usize);
+
+        let mut tiles = Vec::new();
+        tiles.push(Rect::zero());
+
+        for r in 0..rows {
+            for c in 0..columns {
+                let x = c as f32 / columns as f32;
+                let y = r as f32 / rows as f32;
+                let w = (c as f32 + 1.0) / columns as f32;
+                let h = (r as f32 + 1.0) / rows as f32;
+                tiles.push(Rect::new(x, y, w, h));
+            }
+        }
+
+        Tileset {
+            tiles,
+            tile_height,
+            tile_width,
+        }
+    }
+}