falsepattern/zig-glfw
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

glfw: add Joystick.getAxes

Browse source 
Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2021-10-21 23:13:16 -07:00 • committed by Stephen Gutekanst
parent b040116b4c
commit 269b4cacc8
1 changed files with 47 additions and 30 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

77
glfw/src/joystick.zig
View file

@ -69,36 +69,33 @@ pub inline fn isPresent(self: Joystick) Error!bool {
return is_present == c.GLFW_TRUE;
}
// TODO(joystick)
// /// Returns the values of all axes of the specified joystick.
// ///
// /// This function returns the values of all axes of the specified joystick.
// /// Each element in the array is a value between -1.0 and 1.0.
// ///
// /// If the specified joystick is not present this function will return null
// /// but will not generate an error. This can be used instead of first calling
// /// @ref glfwJoystickPresent.
// ///
// /// @param[in] jid The [joystick](@ref joysticks) to query.
// /// @param[out] count Where to store the number of axis values in the returned
// /// array. This is set to zero if the joystick is not present or an error
// /// occurred.
// /// @return An array of axis values, or null if the joystick is not present or
// /// an error occurred.
// ///
// /// Possible errors include glfw.Error.NotInitialized, glfw.Error.InvalidEnum and glfw.Error.PlatformError.
// ///
// /// @pointer_lifetime The returned array is allocated and freed by GLFW. You
// /// should not free it yourself. It is valid until the specified joystick is
// /// disconnected or the library is terminated.
// ///
// /// @thread_safety This function must only be called from the main thread.
// ///
// /// see also: joystick_axis
// /// Replaces `glfwGetJoystickPos`.
// ///
// /// @ingroup input
// GLFWAPI const float* glfwGetJoystickAxes(int jid, int* count);
/// Returns the values of all axes of the specified joystick.
///
/// This function returns the values of all axes of the specified joystick. Each element in the
/// array is a value between -1.0 and 1.0.
///
/// If the specified joystick is not present this function will return null but will not generate
/// an error. This can be used instead of first calling glfw.Joystick.isPresent.
///
/// @return An array of axis values, or null if the joystick is not present.
///
/// Possible errors include glfw.Error.NotInitialized, glfw.Error.InvalidEnum and glfw.Error.PlatformError.
///
/// @pointer_lifetime The returned array is allocated and freed by GLFW. You should not free it
/// yourself. It is valid until the specified joystick is disconnected or the library is
/// terminated.
///
/// @thread_safety This function must only be called from the main thread.
///
/// see also: joystick_axis
/// Replaces `glfwGetJoystickPos`.
pub inline fn getAxes(self: Joystick) Error!?[]const f32 {
var count: c_int = undefined;
const axes = c.glfwGetJoystickAxes(self.jid, &count);
try getError();
if (axes == null) return null;
return axes[0..@intCast(usize, count)];
}
// TODO(joystick)
// /// Returns the state of all buttons of the specified joystick.
@ -442,6 +439,26 @@ pub inline fn getGamepadState(self: Joystick) Error!?GamepadState {
return if (success == c.GLFW_TRUE) state else null;
}
test "isPresent" {
const glfw = @import("main.zig");
try glfw.init();
defer glfw.terminate();
const joystick = glfw.Joystick{ .jid = glfw.Joystick.one };
_ = joystick.isPresent() catch |err| std.debug.print("failed to detect joystick, joysticks not supported? error={}\n", .{err});
}
test "getAxes" {
const glfw = @import("main.zig");
try glfw.init();
defer glfw.terminate();
const joystick = glfw.Joystick{ .jid = glfw.Joystick.one };
_ = joystick.getAxes() catch |err| std.debug.print("failed to get joystick axes, joysticks not supported? error={}\n", .{err});
}
test "setUserPointer_syntax" {
const glfw = @import("main.zig");
try glfw.init();