--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/core/inhibit.h	Fri Jan 31 13:47:49 2020 +0100
@@ -0,0 +1,68 @@
+/*
+ * inhibit.h -- disable specific game behavior
+ *
+ * Copyright (c) 2020 David Demelier <markand@malikania.fr>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef MOLKO_INHIBIT_H
+#define MOLKO_INHIBIT_H
+
+/**
+ * \file inhibit.h
+ * \brief Disable specific game behavior.
+ */
+
+struct action;
+
+/**
+ * \brief Game inhibition.
+ *
+ * This enum is used to alter the game behavior.
+ */
+enum inhibit {
+	/**
+	 * Nothing.
+	 */
+	INHIBIT_NONE,
+
+	/**
+	 * Disable input handling in current state.
+	 */
+	INHIBIT_STATE_INPUT        = (1 << 0),
+
+	/**
+	 * Disable current state updates.
+	 */
+	INHIBIT_STATE_UPDATE       = (1 << 1),
+
+	/**
+	 * Disable current state rendering.
+	 */
+	INHIBIT_STATE_DRAW         = (1 << 2)
+};
+
+/**
+ * Create an action to inhibit the system.
+ *
+ * The mode will replace the actual inhibit modes rather than adding new flags.
+ *
+ * \pre a != NULL
+ * \param mode the new mode
+ * \param a the action to fill
+ */
+void
+inhibit_action(enum inhibit mode, struct action *a);
+
+#endif /* !MOLKO_INHIBIT_H */