From db652f68f8152c826f0ccc03f77fca1c0709cd2e Mon Sep 17 00:00:00 2001
From: Victor Giers <mail@victorgiers.com>
Date: Sat, 11 Apr 2026 20:30:56 +0200
Subject: [PATCH] Add validation for player start max speed and bunny hop
 settings in scene document validation

---
 src/document/scene-document-validation.ts | 35 +++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/src/document/scene-document-validation.ts b/src/document/scene-document-validation.ts
index 5f7f92a2..b072ade6 100644
--- a/src/document/scene-document-validation.ts
+++ b/src/document/scene-document-validation.ts
@@ -1195,6 +1195,17 @@ function validatePlayerStartEntity(
     );
   }
 
+  if (!isNonNegativeFiniteNumber(entity.movementTemplate?.maxSpeed)) {
+    diagnostics.push(
+      createDiagnostic(
+        "error",
+        "invalid-player-start-max-speed",
+        "Player Start max speed must remain a finite number zero or greater.",
+        `${path}.movementTemplate.maxSpeed`
+      )
+    );
+  }
+
   if (typeof entity.movementTemplate?.capabilities?.jump !== "boolean") {
     diagnostics.push(
       createDiagnostic(
@@ -1291,6 +1302,30 @@ function validatePlayerStartEntity(
     );
   }
 
+  if (!isBoolean(entity.movementTemplate?.jump?.bunnyHop)) {
+    diagnostics.push(
+      createDiagnostic(
+        "error",
+        "invalid-player-start-bunny-hop",
+        "Player Start bunny hop setting must be a boolean.",
+        `${path}.movementTemplate.jump.bunnyHop`
+      )
+    );
+  }
+
+  if (
+    !isNonNegativeFiniteNumber(entity.movementTemplate?.jump?.bunnyHopBoost)
+  ) {
+    diagnostics.push(
+      createDiagnostic(
+        "error",
+        "invalid-player-start-bunny-hop-boost",
+        "Player Start bunny hop boost must remain a finite number zero or greater.",
+        `${path}.movementTemplate.jump.bunnyHopBoost`
+      )
+    );
+  }
+
   if (
     !isFiniteNumber(entity.movementTemplate?.sprint?.speedMultiplier) ||
     (entity.movementTemplate?.sprint?.speedMultiplier ?? 0) <= 0