0645429df9
The root dir of our repository has grown quite a lot the past few months.
I'd like to make it more clear where the bulk of the engine lives (`src/`) and
also make it more clear which Mach libraries are consumable as standalone projects.
As for the name of this directory, `libs` was my first choice but there's a bit of
a convention of that being external libraries in Zig projects _today_, while these
are libraries maintained as part of Mach in this repository - not external ones.
We will name this directory `libs`, and if we have a need for external libraries
we will use `external` or `deps` for that directory name. I considered other names
such as `components`, `systems`, `modules` (which are bad as they overlap with
major ECS / engine concepts), and it seems likely the official Zig package manager
will break the convention of using a `libs` dir anyway.
Performed via:
```sh
mkdir libs/
git mv freetype libs/
git mv basisu libs/
git mv gamemode libs/
git mv glfw libs/
git mv gpu libs/
git mv gpu-dawn libs/
git mv sysaudio libs/
git mv sysjs libs/
git mv ecs libs/
```
git-subtree-dir: glfw
git-subtree-mainline: 0d5b853443
git-subtree-split: 572d1144f11b353abdb64fff828b25a4f0fbb7ca
Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
git mv ecs libs/
Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
100 lines
2.5 KiB
Zig
100 lines
2.5 KiB
Zig
const c = @import("c.zig").c;
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// must be in sync with GLFW C constants in hat state group, search for "@defgroup hat_state Joystick hat states"
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/// A bitmask of all Joystick hat states
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///
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/// See glfw.Joystick.getHats for how these are used.
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pub const Hat = packed struct {
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up: bool = false,
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right: bool = false,
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down: bool = false,
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left: bool = false,
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_reserved: u4 = 0,
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pub inline fn centered(self: Hat) bool {
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return self.up == false and self.right == false and self.down == false and self.left == false;
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}
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inline fn verifyIntType(comptime IntType: type) void {
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comptime {
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switch (@typeInfo(IntType)) {
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.Int => {},
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else => @compileError("Int was not of int type"),
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}
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}
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}
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pub inline fn toInt(self: Hat, comptime IntType: type) IntType {
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verifyIntType(IntType);
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return @intCast(IntType, @bitCast(u8, self));
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}
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pub inline fn fromInt(flags: anytype) Hat {
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verifyIntType(@TypeOf(flags));
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return @bitCast(Hat, @intCast(u8, flags));
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}
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};
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/// Holds all GLFW hat values in their raw form.
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pub const RawHat = struct {
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pub const centered = c.GLFW_HAT_CENTERED;
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pub const up = c.GLFW_HAT_UP;
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pub const right = c.GLFW_HAT_RIGHT;
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pub const down = c.GLFW_HAT_DOWN;
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pub const left = c.GLFW_HAT_LEFT;
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pub const right_up = right | up;
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pub const right_down = right | down;
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pub const left_up = left | up;
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pub const left_down = left | down;
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};
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test "from int, single" {
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const std = @import("std");
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try std.testing.expectEqual(Hat{
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.up = true,
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.right = false,
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.down = false,
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.left = false,
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._reserved = 0,
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}, Hat.fromInt(RawHat.up));
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}
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test "from int, multi" {
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const std = @import("std");
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try std.testing.expectEqual(Hat{
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.up = true,
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.right = false,
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.down = true,
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.left = true,
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._reserved = 0,
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}, Hat.fromInt(RawHat.up | RawHat.down | RawHat.left));
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}
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test "to int, single" {
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const std = @import("std");
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var v = Hat{
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.up = true,
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.right = false,
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.down = false,
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.left = false,
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._reserved = 0,
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};
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try std.testing.expectEqual(v.toInt(c_int), RawHat.up);
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}
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test "to int, multi" {
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const std = @import("std");
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var v = Hat{
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.up = true,
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.right = false,
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.down = true,
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.left = true,
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._reserved = 0,
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};
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try std.testing.expectEqual(v.toInt(c_int), RawHat.up | RawHat.down | RawHat.left);
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}
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