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glfw: ziggify gamepad button enumerations

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Helps hexops/mach#37

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2021-10-30 11:35:31 -07:00 • committed by Stephen Gutekanst
parent 2154ee5aea
commit 210e12a437
4 changed files with 52 additions and 28 deletions
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16
glfw/src/Joystick.zig
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@ -9,7 +9,9 @@ const c = @import("c.zig").c;
const Window = @import("Window.zig");
const Error = @import("errors.zig").Error;
const getError = @import("errors.zig").getError;
const Action = @import("action.zig").Action;
const GamepadAxis = @import("gamepad_axis.zig").GamepadAxis;
const GamepadButton = @import("gamepad_button.zig").GamepadButton;
const Joystick = @This();
@ -44,6 +46,8 @@ pub const last = c.GLFW_JOYSTICK_LAST;
/// see also: gamepad, glfwGetGamepadState
const GamepadState = extern struct {
/// The states of each gamepad button (see gamepad_buttons), `glfw.Action.press` or `glfw.Action.release`.
///
/// Use the enumeration helper e.g. `.getButton(.dpad_up)` to access these indices.
buttons: [15]u8,
/// The states of each gamepad axis (see gamepad_axes), in the range -1.0 to 1.0 inclusive.
@ -51,9 +55,16 @@ const GamepadState = extern struct {
/// Use the enumeration helper e.g. `.getAxis(.left_x)` to access these indices.
axes: [6]f32,
/// Returns the state of the specified gamepad button.
pub fn getButton(self: @This(), which: GamepadButton) Action {
_ = self;
return @intToEnum(Action, self.buttons[@intCast(usize, @enumToInt(which))]);
}
/// Returns the status of the specified gamepad axis, in the range -1.0 to 1.0 inclusive.
pub fn getAxis(self: @This(), which: GamepadAxis) f32 {
return self.axis[which];
_ = self;
return self.axes[@intCast(usize, @enumToInt(which))];
}
};
@ -548,5 +559,6 @@ test "getGamepadState" {
const joystick = glfw.Joystick{ .jid = glfw.Joystick.one };
_ = joystick.getGamepadState() catch |err| std.debug.print("failed to get gamepad state, joysticks not supported? error={}\n", .{err});
_ = (GamepadState{}).getAxis(.left_x);
_ = (std.mem.zeroes(GamepadState)).getAxis(.left_x);
_ = (std.mem.zeroes(GamepadState)).getButton(.dpad_up);
}