switch size data types to u16

The binary protocol is limited to using u16's so limit everything to that.

src/image_manager.rs

@@ -28,7 +28,7 @@ impl ImageManager {
     }
 
     /// Instantiate the image manager, and load the images from the given paths.
-    pub fn load(paths: &[&str], size: (u32, u32)) -> ImageManager {
+    pub fn load(paths: &[&str], size: (u16, u16)) -> ImageManager {
         // Show a status message
         println!("Load and process {} image(s)...", paths.len());
 
@@ -84,7 +84,7 @@ impl ImageManager {
 }
 
 /// Load the image at the given path, and size it correctly
-fn load_image(path: &str, size: (u32, u32)) -> DynamicImage {
+fn load_image(path: &str, size: (u16, u16)) -> DynamicImage {
     // Create a path instance
     let path = Path::new(&path);
 
@@ -97,5 +97,5 @@ fn load_image(path: &str, size: (u32, u32)) -> DynamicImage {
     let image = image::open(&path).unwrap();
 
     // Resize the image to fit the screen
-    image.resize_exact(size.0, size.1, FilterType::Gaussian)
+    image.resize_exact(size.0 as u32, size.1 as u32, FilterType::Gaussian)
 }