1 files changed, 11 insertions, 0 deletions
diff --git a/src/gack.h b/src/gack.h
index fc02745..fc1ed86 100644
--- a/src/gack.h
+++ b/src/gack.h
@@ -3,6 +3,17 @@
 #ifndef GACK_H
 #define GACK_H
 
+#define GACK_NAME_MAX 256
+
+typedef struct GackEntry GackEntry;
+typedef void (*GackEntryCB)(GackEntry* entry, Game* game);
+
+typedef struct GackEntry {
+    char description;
+    int cost;
+    GackEntryCB callback;
+} GackEntry;
+
 typedef struct Gack {
 } Gack;