Feat: Add brush face climbable property and command support

src/commands/set-box-brush-face-climbable-command.ts

@@ -0,0 +1,91 @@
+import type { ToolMode } from "../core/tool-mode";
+import { createOpaqueId } from "../core/ids";
+import type { EditorSelection } from "../core/selection";
+import type { WhiteboxFaceId } from "../document/brushes";
+
+import {
+  cloneSelectionForCommand,
+  getBoxBrushFaceOrThrow,
+  replaceBoxBrushFace,
+  setSingleBrushFaceSelection
+} from "./brush-command-helpers";
+import type { EditorCommand } from "./command";
+
+interface SetBoxBrushFaceClimbableCommandOptions {
+  brushId: string;
+  faceId: WhiteboxFaceId;
+  climbable: boolean;
+}
+
+export function createSetBoxBrushFaceClimbableCommand(
+  options: SetBoxBrushFaceClimbableCommandOptions
+): EditorCommand {
+  let previousClimbable: boolean | null = null;
+  let previousSelection: EditorSelection | null = null;
+  let previousToolMode: ToolMode | null = null;
+
+  return {
+    id: createOpaqueId("command"),
+    label: options.climbable
+      ? `Mark ${options.faceId} face climbable`
+      : `Clear ${options.faceId} face climbable`,
+    execute(context) {
+      const currentDocument = context.getDocument();
+      const currentFace = getBoxBrushFaceOrThrow(
+        currentDocument,
+        options.brushId,
+        options.faceId
+      );
+
+      if (previousClimbable === null) {
+        previousClimbable = currentFace.climbable;
+      }
+
+      if (previousSelection === null) {
+        previousSelection = cloneSelectionForCommand(context.getSelection());
+      }
+
+      if (previousToolMode === null) {
+        previousToolMode = context.getToolMode();
+      }
+
+      context.setDocument(
+        replaceBoxBrushFace(currentDocument, options.brushId, options.faceId, {
+          ...currentFace,
+          climbable: options.climbable
+        })
+      );
+      context.setSelection(
+        setSingleBrushFaceSelection(options.brushId, options.faceId)
+      );
+      context.setToolMode("select");
+    },
+    undo(context) {
+      if (previousClimbable === null) {
+        return;
+      }
+
+      const currentDocument = context.getDocument();
+      const currentFace = getBoxBrushFaceOrThrow(
+        currentDocument,
+        options.brushId,
+        options.faceId
+      );
+
+      context.setDocument(
+        replaceBoxBrushFace(currentDocument, options.brushId, options.faceId, {
+          ...currentFace,
+          climbable: previousClimbable
+        })
+      );
+
+      if (previousSelection !== null) {
+        context.setSelection(previousSelection);
+      }
+
+      if (previousToolMode !== null) {
+        context.setToolMode(previousToolMode);
+      }
+    }
+  };
+}