diff --git a/engines/hpl1/module.mk b/engines/hpl1/module.mk
index 6ecc6fbd7aa..faddef872ed 100644
--- a/engines/hpl1/module.mk
+++ b/engines/hpl1/module.mk
@@ -3,6 +3,7 @@ MODULE := engines/hpl1
MODULE_OBJS := \
console.o \
detection.o \
+ string.o \
engine/ai/AI.o \
engine/ai/AINodeContainer.o \
engine/ai/AINodeGenerator.o \
diff --git a/engines/hpl1/string.cpp b/engines/hpl1/string.cpp
new file mode 100644
index 00000000000..75250269169
--- /dev/null
+++ b/engines/hpl1/string.cpp
@@ -0,0 +1,40 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ *
+ */
+
+#include
+#include "hpl1/string.h"
+
+namespace Hpl1 {
+
+int stoi(const char *str, int emptyResult) {
+ if (str == nullptr)
+ return emptyResult;
+ return atoi(str);
+}
+
+Common::String fileDir(const Common::String &path) {
+ size_t last = path.findLastOf("/");
+ if (last == Common::String::npos)
+ return "";
+ return path.substr(0, last+1);
+}
+
+}
\ No newline at end of file
diff --git a/engines/hpl1/string.h b/engines/hpl1/string.h
new file mode 100644
index 00000000000..4ad65ac932b
--- /dev/null
+++ b/engines/hpl1/string.h
@@ -0,0 +1,35 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ *
+ */
+
+#ifndef HPL1_STRING_H
+#define HPL1_STRING_H
+
+#include "common/str.h"
+
+namespace Hpl1 {
+
+int stoi(const char *str, int emptyResult = 0);
+
+Common::String fileDir(const Common::String &path);
+
+}
+
+#endif
\ No newline at end of file