Brainstorming the design.

src/sprite.rs

@@ -10,7 +10,7 @@ pub struct Sprite {
     color: (f32, f32, f32, f32),
 
     textured: bool,
-    texture_id: i32,
+    texture_id: Option<String>,
 
 
 }
@@ -39,11 +39,11 @@ impl Sprite {
             size: size,
             color: color,
             textured: false,
-            texture_id: 0
+            texture_id: None
         }
     }
 
-    pub fn new_with_texture(position: (f32, f32), size: (u32, u32), texture_id: i32) -> Sprite {
+    pub fn new_with_texture(position: (f32, f32), size: (u32, u32), texture_id: String) -> Sprite {
 
         let fsize = (size.0 as f32, size.1 as f32);
 
@@ -60,7 +60,7 @@ impl Sprite {
             size,
             color: (0.0, 0.0, 0.0, 0.0),
             textured: false,
-            texture_id
+            texture_id: Some(texture_id)
         }
     }
 
@@ -77,10 +77,10 @@ impl Drawable for Sprite {
         self.color.clone()
     }
 
-    fn get_texture_id(&self) -> Option<i32> {
+    fn get_texture_id(&self) -> Option<String> {
         match self.textured {
             true => {
-                Some(self.texture_id.clone())
+                self.texture_id.clone()
             },
             false => None,
         }