zoom factor

kiln-core/src/map_file.rs

@@ -50,6 +50,9 @@ pub struct MapHeader {
     /// Name of the board-level script in the `[scripts]` table, if any.
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub board_script_name: Option<String>,
+    /// Integer tile scale factor. 1 = natural size. Omitted from files when 1 (the default).
+    #[serde(default = "default_zoom", skip_serializing_if = "is_zoom_default")]
+    pub zoom: u32,
 }
 
 /// The `[font]` section of a map file, specifying a bitmap font for this board.
@@ -150,6 +153,8 @@ pub(crate) struct MapFileObjectEntry {
 }
 
 fn default_true() -> bool { true }
+fn default_zoom() -> u32 { 1 }
+fn is_zoom_default(z: &u32) -> bool { *z == 1 }
 
 /// Parses an `"#RRGGBB"` hex color string into an [`Rgba8`].
 /// Returns opaque black on any parse failure.
@@ -282,6 +287,7 @@ impl TryFrom<MapFile> for Board {
             objects,
             portals: mf.portals,
             font,
+            zoom: mf.map.zoom,
             scripts: mf.scripts,
             board_script_name: mf.map.board_script_name,
         })
@@ -399,6 +405,7 @@ impl From<&Board> for MapFile {
                 height: board.height,
                 player_start: [board.player.x, board.player.y],
                 board_script_name: board.board_script_name.clone(),
+                zoom: board.zoom,
             },
             palette,
             grid: GridData { content },