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chore: move some init code to functions

This commit is contained in:
Rekai Nyangadzayi Musuka 2022-04-14 00:52:21 -03:00
parent f6d746e810
commit 6b09250a56
1 changed files with 60 additions and 33 deletions
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93
src/main.zig
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@ -67,25 +67,12 @@ pub fn main() anyerror!void {
log.info("Save Path: {s}", .{save_path});
// Initialize SDL
const status = SDL.SDL_Init(SDL.SDL_INIT_VIDEO | SDL.SDL_INIT_EVENTS | SDL.SDL_INIT_AUDIO | SDL.SDL_INIT_GAMECONTROLLER);
_ = initSdl2();
defer SDL.SDL_Quit();
if (status < 0) sdlPanic();
// Initialize SDL Audio
var have: SDL.SDL_AudioSpec = undefined;
var want = std.mem.zeroes(SDL.SDL_AudioSpec);
want.freq = 32768;
want.format = SDL.AUDIO_S8;
want.channels = 2;
want.samples = 0x200;
want.callback = null;
const audio_dev = SDL.SDL_OpenAudioDevice(null, 0, &want, &have, 0);
const audio_dev = initAudio();
defer SDL.SDL_CloseAudioDevice(audio_dev);
if (audio_dev == 0) sdlPanic();
// Start Playback on the Audio evice
SDL.SDL_PauseAudioDevice(audio_dev, 0);
// Initialize Emulator
var scheduler = Scheduler.init(alloc);
@ -113,25 +100,16 @@ pub fn main() anyerror!void {
const emu_thread = try Thread.spawn(.{}, emu.run, .{ .LimitedFPS, &quit, &emu_rate, &scheduler, &cpu });
defer emu_thread.join();
const title = correctTitle(cpu.bus.pak.title);
var title_buf: [0x20]u8 = std.mem.zeroes([0x20]u8);
const window_title = try std.fmt.bufPrint(&title_buf, "ZBA | {s}", .{title});
const window_title = try std.fmt.bufPrint(&title_buf, "ZBA | {s}", .{correctTitle(cpu.bus.pak.title)});
var window = SDL.SDL_CreateWindow(
window_title.ptr,
SDL.SDL_WINDOWPOS_CENTERED,
SDL.SDL_WINDOWPOS_CENTERED,
gba_width * window_scale,
gba_height * window_scale,
SDL.SDL_WINDOW_SHOWN,
) orelse sdlPanic();
const window = createWindow(window_title, gba_width, gba_height);
defer SDL.SDL_DestroyWindow(window);
const renderer = SDL.SDL_CreateRenderer(window, -1, SDL.SDL_RENDERER_ACCELERATED | SDL.SDL_RENDERER_PRESENTVSYNC) orelse sdlPanic();
const renderer = createRenderer(window);
defer SDL.SDL_DestroyRenderer(renderer);
const texture = SDL.SDL_CreateTexture(renderer, SDL.SDL_PIXELFORMAT_RGBA8888, SDL.SDL_TEXTUREACCESS_STREAMING, 240, 160) orelse sdlPanic();
const texture = createTexture(renderer, gba_width, gba_height);
defer SDL.SDL_DestroyTexture(texture);
// Init FPS Timer
@ -198,16 +176,16 @@ pub fn main() anyerror!void {
quit.store(true, .Unordered); // Terminate Emulator Thread
}
fn sdlPanic() noreturn {
const str = @as(?[*:0]const u8, SDL.SDL_GetError()) orelse "unknown error";
@panic(std.mem.sliceTo(str, 0));
}
const CliError = error{
InsufficientOptions,
UnneededOptions,
};
fn sdlPanic() noreturn {
const str = @as(?[*:0]const u8, SDL.SDL_GetError()) orelse "unknown error";
@panic(std.mem.sliceTo(str, 0));
}
// FIXME: Superfluous allocations?
fn setupSavePath(alloc: std.mem.Allocator) !?[]const u8 {
const save_subpath = try std.fs.path.join(alloc, &[_][]const u8{ "zba", "save" });
@ -227,3 +205,52 @@ fn setupSavePath(alloc: std.mem.Allocator) !?[]const u8 {
return save_path;
}
fn initSdl2() c_int {
const status = SDL.SDL_Init(SDL.SDL_INIT_VIDEO | SDL.SDL_INIT_EVENTS | SDL.SDL_INIT_AUDIO | SDL.SDL_INIT_GAMECONTROLLER);
if (status < 0) sdlPanic();
return status;
}
fn createWindow(title: []u8, width: c_int, height: c_int) *SDL.SDL_Window {
return SDL.SDL_CreateWindow(
title.ptr,
SDL.SDL_WINDOWPOS_CENTERED,
SDL.SDL_WINDOWPOS_CENTERED,
width * window_scale,
height * window_scale,
SDL.SDL_WINDOW_SHOWN,
) orelse sdlPanic();
}
fn createRenderer(window: *SDL.SDL_Window) *SDL.SDL_Renderer {
return SDL.SDL_CreateRenderer(window, -1, SDL.SDL_RENDERER_ACCELERATED | SDL.SDL_RENDERER_PRESENTVSYNC) orelse sdlPanic();
}
fn createTexture(renderer: *SDL.SDL_Renderer, width: c_int, height: c_int) *SDL.SDL_Texture {
return SDL.SDL_CreateTexture(
renderer,
SDL.SDL_PIXELFORMAT_RGBA8888,
SDL.SDL_TEXTUREACCESS_STREAMING,
width,
height,
) orelse sdlPanic();
}
fn initAudio() SDL.SDL_AudioDeviceID {
var have: SDL.SDL_AudioSpec = undefined;
var want = std.mem.zeroes(SDL.SDL_AudioSpec);
want.freq = 32768;
want.format = SDL.AUDIO_S8;
want.channels = 2;
want.samples = 0x200;
want.callback = null;
const dev = SDL.SDL_OpenAudioDevice(null, 0, &want, &have, 0);
if (dev == 0) sdlPanic();
// Start Playback on the Audio evice
SDL.SDL_PauseAudioDevice(dev, 0);
return dev;
}