Move helper to util

src/render/tile_mask_pattern.rs

@@ -1,49 +1,7 @@
 use crate::coords::WorldTileCoords;
 
-struct MinMaxBoundingBox {
-    min_x: i32,
-    min_y: i32,
-    max_x: i32,
-    max_y: i32,
-    initialized: bool,
-}
-
-impl MinMaxBoundingBox {
-    fn new() -> Self {
-        Self {
-            min_x: i32::MAX,
-            min_y: i32::MAX,
-            max_x: i32::MIN,
-            max_y: i32::MIN,
-            initialized: false,
-        }
-    }
-
-    pub fn is_initialized(&self) -> bool {
-        self.initialized
-    }
-
-    pub fn update(&mut self, world_coords: &WorldTileCoords) {
-        self.initialized = true;
-
-        if world_coords.x < self.min_x {
-            self.min_x = world_coords.x;
-        }
-
-        if world_coords.y < self.min_y {
-            self.min_y = world_coords.y;
-        }
-
-        if world_coords.x > self.max_x {
-            self.max_x = world_coords.x;
-        }
-
-        if world_coords.y > self.max_y {
-            self.max_y = world_coords.y;
-        }
-    }
-}
-
+/// The tile mask pattern assigns each tile a value which can be used for stencil testing.
+/// The pattern can be reviewed [here](https://maxammann.org/mapr/docs/stencil-masking.html).
 pub struct TileMaskPattern {}
 
 impl TileMaskPattern {

src/util/mod.rs

@@ -3,4 +3,49 @@
 mod fps_meter;
 pub mod math;
 
+use crate::coords::WorldTileCoords;
 pub use fps_meter::FPSMeter;
+
+struct MinMaxBoundingBox {
+    min_x: i32,
+    min_y: i32,
+    max_x: i32,
+    max_y: i32,
+    initialized: bool,
+}
+
+impl MinMaxBoundingBox {
+    fn new() -> Self {
+        Self {
+            min_x: i32::MAX,
+            min_y: i32::MAX,
+            max_x: i32::MIN,
+            max_y: i32::MIN,
+            initialized: false,
+        }
+    }
+
+    pub fn is_initialized(&self) -> bool {
+        self.initialized
+    }
+
+    pub fn update(&mut self, world_coords: &WorldTileCoords) {
+        self.initialized = true;
+
+        if world_coords.x < self.min_x {
+            self.min_x = world_coords.x;
+        }
+
+        if world_coords.y < self.min_y {
+            self.min_y = world_coords.y;
+        }
+
+        if world_coords.x > self.max_x {
+            self.max_x = world_coords.x;
+        }
+
+        if world_coords.y > self.max_y {
+            self.max_y = world_coords.y;
+        }
+    }
+}