Improved error message on failed version check (#928)

See #923

Jolt/RegisterTypes.cpp

@@ -81,6 +81,18 @@ void RegisterTypesInternal(uint64 inVersionID)
 	if (!VerifyJoltVersionIDInternal(inVersionID))
 	{
 		Trace("Version mismatch, make sure you compile the client code with the same Jolt version and compiler definitions!");
+		uint64 mismatch = JPH_VERSION_ID ^ inVersionID;
+		auto check_bit = [mismatch](int inBit, const char *inLabel) { if (mismatch & (uint64(1) << (inBit + 23))) Trace("Mismatching define %s.", inLabel); };
+		check_bit(1, "JPH_DOUBLE_PRECISION");
+		check_bit(2, "JPH_CROSS_PLATFORM_DETERMINISTIC");
+		check_bit(3, "JPH_FLOATING_POINT_EXCEPTIONS_ENABLED");
+		check_bit(4, "JPH_PROFILE_ENABLED");
+		check_bit(5, "JPH_EXTERNAL_PROFILE");
+		check_bit(6, "JPH_DEBUG_RENDERER");
+		check_bit(7, "JPH_DISABLE_TEMP_ALLOCATOR");
+		check_bit(8, "JPH_DISABLE_CUSTOM_ALLOCATOR");
+		check_bit(9, "JPH_OBJECT_LAYER_BITS");
+		check_bit(10, "JPH_ENABLE_ASSERTS");
 		std::abort();
 	}