1 files changed, 16 insertions, 0 deletions
diff --git a/include/flags.h b/include/flags.h
new file mode 100644
index 00000000..1173cc8d
--- /dev/null
+++ b/include/flags.h
@@ -0,0 +1,16 @@
+#pragma once
+
+#include "types.h"
+
+/**
+ * Flags value format:
+ *     - 0x001F: 0000 0000 0001 1111 -> the shift value to read or write the flag's bit
+ *     - 0xFFE0: 1111 1111 1110 0000 -> index of the value in the array
+ *
+ * `FLAG` is a macro that allows you to get the final value from the index and the slot number.
+ */
+
+#define GET_FLAG(arr, pos) (((arr)[((u32) (pos)) >> 5] & (1 << ((pos) & 0x1f))) != 0)
+#define SET_FLAG(arr, pos) ((arr)[((u32) (pos)) >> 5] |= 1 << ((pos) & 0x1f))
+#define UNSET_FLAG(arr, pos) ((arr)[((u32) (pos)) >> 5] &= ~(1 << ((pos) & 0x1f)))
+#define FLAG(index, slot) (((index) << 5) | ((slot) & 0x1F))