1 files changed, 48 insertions, 0 deletions
diff --git a/stockton-levels/src/parts/textures.rs b/stockton-levels/src/parts/textures.rs
new file mode 100644
index 0000000..8e6cb9a
--- /dev/null
+++ b/stockton-levels/src/parts/textures.rs
@@ -0,0 +1,48 @@
+// This program is free software: you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+use std::iter::Iterator;
+
+pub type TextureRef = u32;
+
+pub trait IsTexture {
+    fn name(&self) -> &str;
+}
+
+pub trait HasTextures {
+    type Texture: IsTexture;
+
+    fn get_texture(&self, idx: TextureRef) -> Option<&Self::Texture>;
+    fn iter_textures(&self) -> Textures<Self> {
+        Textures {
+            next: 0,
+            container: self,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy)]
+pub struct Textures<'a, T: HasTextures + ?Sized> {
+    next: TextureRef,
+    container: &'a T,
+}
+
+impl<'a, T: HasTextures> Iterator for Textures<'a, T> {
+    type Item = &'a T::Texture;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        let res = self.container.get_texture(self.next);
+        self.next += 1;
+        res
+    }
+}