1 files changed, 51 insertions, 0 deletions
diff --git a/core/error/error_macros.cpp b/core/error/error_macros.cpp
index 8376c0aaf8..813ee7684f 100644
--- a/core/error/error_macros.cpp
+++ b/core/error/error_macros.cpp
@@ -34,6 +34,12 @@
 #include "core/os/os.h"
 #include "core/string/ustring.h"
 
+// Optional physics interpolation warnings try to include the path to the relevant node.
+#if defined(DEBUG_ENABLED) && defined(TOOLS_ENABLED)
+#include "core/config/project_settings.h"
+#include "scene/main/node.h"
+#endif
+
 static ErrorHandlerList *error_handler_list = nullptr;
 
 void add_error_handler(ErrorHandlerList *p_handler) {
@@ -128,3 +134,48 @@ void _err_print_index_error(const char *p_function, const char *p_file, int p_li
 void _err_flush_stdout() {
 	fflush(stdout);
 }
+
+// Prevent error spam by limiting the warnings to a certain frequency.
+void _physics_interpolation_warning(const char *p_function, const char *p_file, int p_line, ObjectID p_id, const char *p_warn_string) {
+#if defined(DEBUG_ENABLED) && defined(TOOLS_ENABLED)
+	const uint32_t warn_max = 2048;
+	const uint32_t warn_timeout_seconds = 15;
+
+	static uint32_t warn_count = warn_max;
+	static uint32_t warn_timeout = warn_timeout_seconds;
+
+	uint32_t time_now = UINT32_MAX;
+
+	if (warn_count) {
+		warn_count--;
+	}
+
+	if (!warn_count) {
+		time_now = OS::get_singleton()->get_ticks_msec() / 1000;
+	}
+
+	if ((warn_count == 0) && (time_now >= warn_timeout)) {
+		warn_count = warn_max;
+		warn_timeout = time_now + warn_timeout_seconds;
+
+		if (GLOBAL_GET("debug/settings/physics_interpolation/enable_warnings")) {
+			// UINT64_MAX means unused.
+			if (p_id.operator uint64_t() == UINT64_MAX) {
+				_err_print_error(p_function, p_file, p_line, "[Physics interpolation] " + String(p_warn_string) + " (possibly benign).", false, ERR_HANDLER_WARNING);
+			} else {
+				String node_name;
+				if (p_id.is_valid()) {
+					Node *node = Object::cast_to<Node>(ObjectDB::get_instance(p_id));
+					if (node && node->is_inside_tree()) {
+						node_name = "\"" + String(node->get_path()) + "\"";
+					} else {
+						node_name = "\"unknown\"";
+					}
+				}
+
+				_err_print_error(p_function, p_file, p_line, "[Physics interpolation] " + String(p_warn_string) + ": " + node_name + " (possibly benign).", false, ERR_HANDLER_WARNING);
+			}
+		}
+	}
+#endif
+}