added basic stairs

src/exporter.rs

@@ -826,6 +826,54 @@ pub fn build_svg(layout: &DungeonLayout, settings: &UiSettings) -> String {
         settings.colorblind_mode,
     );
 
+    // Draw stairs and elevators.
+    for stair in &layout.stairs {
+        let x = g.left() + stair.cell.0 as f32 * g.cell;
+        let y = g.top() + stair.cell.1 as f32 * g.cell;
+        let w = stair.size as f32 * g.cell;
+        let h = stair.size as f32 * g.cell;
+
+        if stair.is_elevator {
+            let fill = if settings.colorblind_mode {
+                "rgb(180,180,180)"
+            } else {
+                "rgb(100,150,200)"
+            };
+            let _ = writeln!(
+                s,
+                "<rect x='{x}' y='{y}' width='{w}' height='{h}' fill='{fill}' fill-opacity='0.35' stroke='rgb(100,150,200)' stroke-width='2'/>"
+            );
+            let _ = writeln!(
+                s,
+                "<text x='{cx}' y='{cy}' text-anchor='middle' dominant-baseline='middle' fill='white' font-size='{fs}'>E</text>",
+                cx = x + w / 2.0,
+                cy = y + h / 2.0,
+                fs = (g.cell * stair.size as f32 * 0.4).clamp(14.0, 48.0)
+            );
+        } else {
+            let fill = if settings.colorblind_mode {
+                "rgb(180,180,180)"
+            } else {
+                "rgb(200,150,50)"
+            };
+            let _ = writeln!(
+                s,
+                "<rect x='{x}' y='{y}' width='{w}' height='{h}' fill='{fill}' fill-opacity='0.35' stroke='rgb(150,100,30)' stroke-width='2'/>"
+            );
+            let steps = (stair.size as f32 * 2.0).round() as usize;
+            let step_h = h / steps as f32;
+            for i in 0..steps {
+                let sy = y + (i as f32 * step_h) + step_h * 0.5;
+                let _ = writeln!(
+                    s,
+                    "<line x1='{x1}' y1='{sy}' x2='{x2}' y2='{sy}' stroke='rgb(150,100,30)' stroke-width='1.5'/>",
+                    x1 = x + 2.0,
+                    x2 = x + w - 2.0
+                );
+            }
+        }
+    }
+
     s.push_str("</svg>\n");
     s
 }