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examples/core: building without ECS

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2024-09-22 13:25:49 -07:00 • committed by Emi Gutekanst
parent 2a13c07d9e
commit 0e12857154
35 changed files with 1365 additions and 4176 deletions
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76
examples/play-opus/App.zig
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@ -15,16 +15,9 @@ pub const App = @This();
// TODO: banish global allocator
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
pub const name = .app;
pub const Mod = mach.Mod(@This());
pub const mach_module = .app;
pub const systems = .{
.start = .{ .handler = start },
.init = .{ .handler = init },
.deinit = .{ .handler = deinit },
.tick = .{ .handler = tick },
.audio_state_change = .{ .handler = audioStateChange },
};
pub const mach_systems = .{ .start, .init, .deinit, .tick, .audio_state_change };
pub const components = .{
.is_bgm = .{ .type = void },
@ -33,9 +26,9 @@ pub const components = .{
sfx: mach.Audio.Opus,
fn start(
core: *mach.Core.Mod,
audio: *mach.Audio.Mod,
app: *Mod,
core: *mach.Core,
audio: *mach.Audio,
app: *App,
) !void {
core.schedule(.init);
audio.schedule(.init);
@ -44,16 +37,19 @@ fn start(
fn init(
entities: *mach.Entities.Mod,
core: *mach.Core.Mod,
audio: *mach.Audio.Mod,
app: *Mod,
core: *mach.Core,
audio: *mach.Audio,
app: *App,
app_tick: mach.Call(App, .tick),
app_deinit: mach.Call(App, .deinit),
app_audio_state_change: mach.Call(App, .audio_state_change),
) !void {
core.state().on_tick = app.system(.tick);
core.state().on_exit = app.system(.deinit);
core.on_tick = app_tick.id;
core.on_exit = app_deinit.id;
// Configure the audio module to send our app's .audio_state_change event when an entity's sound
// finishes playing.
audio.state().on_state_change = app.system(.audio_state_change);
audio.on_state_change = app_audio_state_change.id;
const bgm_fbs = std.io.fixedBufferStream(assets.bgm.bit_bit_loop);
const bgm_sound_stream = std.io.StreamSource{ .const_buffer = bgm_fbs };
@ -77,24 +73,21 @@ fn init(
std.debug.print("[typing] Play SFX\n", .{});
std.debug.print("[arrow up] increase volume 10%\n", .{});
std.debug.print("[arrow down] decrease volume 10%\n", .{});
core.schedule(.start);
}
fn deinit(core: *mach.Core.Mod, audio: *mach.Audio.Mod) void {
fn deinit(audio: *mach.Audio) void {
audio.schedule(.deinit);
core.schedule(.deinit);
}
fn audioStateChange(
entities: *mach.Entities.Mod,
audio: *mach.Audio.Mod,
app: *Mod,
audio: *mach.Audio,
app: *App,
) !void {
// Find audio entities that are no longer playing
var q = try entities.query(.{
.ids = mach.Entities.Mod.read(.id),
.playings = mach.Audio.Mod.read(.playing),
.playings = mach.Audio.read(.playing),
});
while (q.next()) |v| {
for (v.ids, v.playings) |id, playing| {
@ -114,45 +107,45 @@ fn audioStateChange(
fn tick(
entities: *mach.Entities.Mod,
core: *mach.Core.Mod,
audio: *mach.Audio.Mod,
app: *Mod,
core: *mach.Core,
audio: *mach.Audio,
app: *App,
) !void {
while (core.state().nextEvent()) |event| {
while (core.nextEvent()) |event| {
switch (event) {
.key_press => |ev| switch (ev.key) {
.down => {
const vol = math.clamp(try audio.state().player.volume() - 0.1, 0, 1);
try audio.state().player.setVolume(vol);
const vol = math.clamp(try audio.player.volume() - 0.1, 0, 1);
try audio.player.setVolume(vol);
std.debug.print("[volume] {d:.0}%\n", .{vol * 100.0});
},
.up => {
const vol = math.clamp(try audio.state().player.volume() + 0.1, 0, 1);
try audio.state().player.setVolume(vol);
const vol = math.clamp(try audio.player.volume() + 0.1, 0, 1);
try audio.player.setVolume(vol);
std.debug.print("[volume] {d:.0}%\n", .{vol * 100.0});
},
else => {
// Play a new SFX
const e = try entities.new();
try audio.set(e, .samples, app.state().sfx.samples);
try audio.set(e, .channels, app.state().sfx.channels);
try audio.set(e, .samples, app.sfx.samples);
try audio.set(e, .channels, app.sfx.channels);
try audio.set(e, .index, 0);
try audio.set(e, .playing, true);
},
},
.close => core.schedule(.exit),
.close => core.exit(),
else => {},
}
}
// Grab the back buffer of the swapchain
// TODO(Core)
const back_buffer_view = core.state().swap_chain.getCurrentTextureView().?;
const back_buffer_view = core.swap_chain.getCurrentTextureView().?;
defer back_buffer_view.release();
// Create a command encoder
const label = @tagName(name) ++ ".tick";
const encoder = core.state().device.createCommandEncoder(&.{ .label = label });
const label = @tagName(mach_module) ++ ".tick";
const encoder = core.device.createCommandEncoder(&.{ .label = label });
defer encoder.release();
// Begin render pass
@ -177,8 +170,5 @@ fn tick(
// Submit our commands to the queue
var command = encoder.finish(&.{ .label = label });
defer command.release();
core.state().queue.submit(&[_]*gpu.CommandBuffer{command});
// Present the frame
core.schedule(.present_frame);
core.queue.submit(&[_]*gpu.CommandBuffer{command});
}