From 29bb55b03ac51633e91e0f461f3828cd12c6a74d Mon Sep 17 00:00:00 2001
From: Victor Giers <mail@victorgiers.com>
Date: Thu, 23 Apr 2026 08:51:25 +0200
Subject: [PATCH] auto-git:  [change] src/document/scene-document-validation.ts

---
 src/document/scene-document-validation.ts | 56 +++++++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/src/document/scene-document-validation.ts b/src/document/scene-document-validation.ts
index 03cee169..24e16fad 100644
--- a/src/document/scene-document-validation.ts
+++ b/src/document/scene-document-validation.ts
@@ -23,6 +23,7 @@ import {
 } from "../controls/control-surface";
 import { WHITEBOX_SELECTION_MODES } from "../core/whitebox-selection-mode";
 import {
+  isCameraRigRailPlacementMode,
   isCameraRigTransitionMode,
   isNpcPresenceMode,
   isPlayerStartColliderMode,
@@ -1560,6 +1561,61 @@ function validateCameraRigEntity(
         );
       }
     }
+
+    if (!isCameraRigRailPlacementMode(entity.railPlacementMode)) {
+      diagnostics.push(
+        createDiagnostic(
+          "error",
+          "invalid-camera-rig-rail-placement-mode",
+          "Rail Camera Rig placement mode must be nearestToTarget or mapTargetBetweenPoints.",
+          `${path}.railPlacementMode`
+        )
+      );
+    } else if (entity.railPlacementMode === "mapTargetBetweenPoints") {
+      if (!isFiniteVec3(entity.trackStartPoint)) {
+        diagnostics.push(
+          createDiagnostic(
+            "error",
+            "invalid-camera-rig-track-start-point",
+            "Mapped Rail Camera Rig track start points must remain finite on every axis.",
+            `${path}.trackStartPoint`
+          )
+        );
+      }
+
+      if (!isFiniteVec3(entity.trackEndPoint)) {
+        diagnostics.push(
+          createDiagnostic(
+            "error",
+            "invalid-camera-rig-track-end-point",
+            "Mapped Rail Camera Rig track end points must remain finite on every axis.",
+            `${path}.trackEndPoint`
+          )
+        );
+      }
+
+      if (!isFiniteNumberInRange(entity.railStartProgress, 0, 1)) {
+        diagnostics.push(
+          createDiagnostic(
+            "error",
+            "invalid-camera-rig-rail-start-progress",
+            "Mapped Rail Camera Rig start progress must remain between 0 and 1.",
+            `${path}.railStartProgress`
+          )
+        );
+      }
+
+      if (!isFiniteNumberInRange(entity.railEndProgress, 0, 1)) {
+        diagnostics.push(
+          createDiagnostic(
+            "error",
+            "invalid-camera-rig-rail-end-progress",
+            "Mapped Rail Camera Rig end progress must remain between 0 and 1.",
+            `${path}.railEndProgress`
+          )
+        );
+      }
+    }
   }
 
   if (!isNonNegativeFiniteNumber(entity.priority)) {