1 files changed, 9 insertions, 0 deletions
diff --git a/lib/types.h b/lib/types.h
index 8618df9..bf42576 100644
--- a/lib/types.h
+++ b/lib/types.h
@@ -1,3 +1,10 @@
+#ifndef _TYPES_H
+#define _TYPES_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
 typedef struct {
 	float x;
 	float y;
@@ -10,3 +17,5 @@ vec2 dp_vec2_mul(vec2, float scalar);
 vec2 dp_vec2_dot(vec2, vec2);
 float dp_vec2_length(vec2);
 vec2 dp_vec2_normal(vec2);
+
+#endif