flag.c

1 files changed, 43 insertions, 0 deletions

diff --git a/src/flag.c b/src/flag.c
new file mode 100644
index 000000000..a4798fb49
--- /dev/null
+++ b/src/flag.c
@@ -0,0 +1,43 @@
+#include "global.h"
+
+extern u8 gUnknown_0202E8E2[];
+
+u8 *GetFlagPointer(u16 id)
+{
+    if (id == 0)
+        return 0;
+
+    if (id < 0x4000)
+        return &gSaveBlock1.flags[id / 8];
+
+    return &gUnknown_0202E8E2[(id - 0x4000) / 8];
+}
+
+u8 FlagSet(u16 id)
+{
+    u8 *ptr = GetFlagPointer(id);
+    if (ptr)
+        *ptr |= 1 << (id & 7);
+    return 0;
+}
+
+u8 FlagReset(u16 id)
+{
+    u8 *ptr = GetFlagPointer(id);
+    if (ptr)
+        *ptr &= ~(1 << (id & 7));
+    return 0;
+}
+
+bool8 FlagGet(u16 id)
+{
+    u8 *ptr = GetFlagPointer(id);
+
+    if (!ptr)
+        return FALSE;
+
+    if (!(((*ptr) >> (id & 7)) & 1))
+        return FALSE;
+
+    return TRUE;
+}