From 81bac10cd7c26cf1ca1c0fcb9ee3dcccd7710f22 Mon Sep 17 00:00:00 2001
From: Drew DeVault <sir@cmpwn.com>
Date: Thu, 9 Dec 2021 16:46:37 +0100
Subject: Initial gamecontroller support

---
 sdl2/gamecontroller.ha | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 sdl2/gamecontroller.ha

(limited to 'sdl2/gamecontroller.ha')

diff --git a/sdl2/gamecontroller.ha b/sdl2/gamecontroller.ha
new file mode 100644
index 0000000..3b752e1
--- /dev/null
+++ b/sdl2/gamecontroller.ha
@@ -0,0 +1,43 @@
+// TODO: Flesh me out
+
+// The gamecontroller structure used to identify an SDL game controller.
+// (Opaque)
+export type gamecontroller = void;
+
+// The list of axes available from a controller
+//
+// Thumbstick axis values range from [[JOYSTICK_AXIS_MIN]] to
+// [[JOYSTICK_AXIS_MAX]], and are centered within ~8000 of zero, though advanced
+// UI will allow users to set or autodetect the dead zone, which varies between
+// controllers.
+//
+// Trigger axis values range from 0 to [[JOYSTICK_AXIS_MAX]].
+export type controller_axis = enum u8 {
+    LEFTX,
+    LEFTY,
+    RIGHTX,
+    RIGHTY,
+    TRIGGERLEFT,
+    TRIGGERRIGHT,
+    INVALID = 255,
+};
+
+// Check if the given joystick is supported by the game controller interface.
+// 
+// 'joystick_index' is the same as the 'device_index' passed to
+// [[joystick_open]].
+// 
+// Returns SDL_TRUE if the given joystick is supported by the game controller
+// interface, SDL_FALSE if it isn't or it's an invalid index.
+export @symbol("SDL_IsGameController") fn is_game_controller(
+	joystick_index: int) bool;
+
+// Get the SDL_GameController associated with an instance id.
+//
+// Returns a [[controller]] on success or NULL on failure.
+export @symbol("SDL_GameControllerOpen") fn game_controller_open(
+	joystick_index: int) *gamecontroller;
+
+// Close a game controller previously opened with [[game_controller_open]].
+export @symbol("SDL_GameControllerClose") fn game_controller_close(
+	gamecontroller: *gamecontroller) void;
-- 
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