Base

.gitignore

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+zig-cache
+zig-out
+SDL2

build.zig

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+const std = @import("std");
+
+// Although this function looks imperative, note that its job is to
+// declaratively construct a build graph that will be executed by an external
+// runner.
+pub fn build(b: *std.Build) void {
+    // Standard target options allows the person running `zig build` to choose
+    // what target to build for. Here we do not override the defaults, which
+    // means any target is allowed, and the default is native. Other options
+    // for restricting supported target set are available.
+    const target = b.standardTargetOptions(.{});
+
+    // Standard optimization options allow the person running `zig build` to select
+    // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall. Here we do not
+    // set a preferred release mode, allowing the user to decide how to optimize.
+    const optimize = b.standardOptimizeOption(.{});
+
+    const exe = b.addExecutable(.{
+        .name = "ZeNES",
+        // In this case the main source file is merely a path, however, in more
+        // complicated build scripts, this could be a generated file.
+        .root_source_file = .{ .path = "src/main.zig" },
+        .target = target,
+        .optimize = optimize,
+    });
+
+
+    // This declares intent for the executable to be installed into the
+    // standard location when the user invokes the "install" step (the default
+    // step when running `zig build`).
+    exe.linkLibC();
+    exe.addIncludePath("./SDL2/include");
+    exe.addLibraryPath("./SDL2/lib/x64");
+    exe.linkSystemLibrary("SDL2");
+    exe.install();
+
+    // This *creates* a RunStep in the build graph, to be executed when another
+    // step is evaluated that depends on it. The next line below will establish
+    // such a dependency.
+    const run_cmd = exe.run();
+
+    // By making the run step depend on the install step, it will be run from the
+    // installation directory rather than directly from within the cache directory.
+    // This is not necessary, however, if the application depends on other installed
+    // files, this ensures they will be present and in the expected location.
+    run_cmd.step.dependOn(b.getInstallStep());
+
+    // This allows the user to pass arguments to the application in the build
+    // command itself, like this: `zig build run -- arg1 arg2 etc`
+    if (b.args) |args| {
+        run_cmd.addArgs(args);
+    }
+
+    // This creates a build step. It will be visible in the `zig build --help` menu,
+    // and can be selected like this: `zig build run`
+    // This will evaluate the `run` step rather than the default, which is "install".
+    const run_step = b.step("run", "Run the app");
+    run_step.dependOn(&run_cmd.step);
+
+    // Creates a step for unit testing.
+    const exe_tests = b.addTest(.{
+        .root_source_file = .{ .path = "src/main.zig" },
+        .target = target,
+        .optimize = optimize,
+    });
+
+    // Similar to creating the run step earlier, this exposes a `test` step to
+    // the `zig build --help` menu, providing a way for the user to request
+    // running the unit tests.
+    const test_step = b.step("test", "Run unit tests");
+    test_step.dependOn(&exe_tests.step);
+}

src/main.zig

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+const std = @import("std");
+const sdl = @cImport(@cInclude("SDL.h"));
+
+var window: ?*sdl.SDL_Window = null;
+var renderer : ?*sdl.SDL_Renderer = null;
+
+pub fn init() !void {
+    std.debug.print("ZeNES Starting!\n", .{});
+
+    if (sdl.SDL_Init(sdl.SDL_INIT_EVERYTHING) < 0) {
+        @panic("SDL Initialization Failed!");
+    }
+    
+    window = sdl.SDL_CreateWindow("ZeNES", sdl.SDL_WINDOWPOS_CENTERED, sdl.SDL_WINDOWPOS_CENTERED, 768, 720, 0);
+    if (window == null) {
+        @panic("SDL Window Creation Failed!");
+    }
+
+    renderer = sdl.SDL_CreateRenderer(window, -1, 0);
+
+    if(renderer == null) {
+        var err = sdl.SDL_GetError();
+        std.debug.print("{s}\n", .{err});
+
+        @panic("SDL Renderer Initialization Failed!");
+    }
+}
+
+pub fn deinit() void {
+    sdl.SDL_DestroyWindow(window);
+    window = null;
+
+    sdl.SDL_Quit();
+    std.debug.print("ZeNES Quitting!\n", .{});
+}
+
+pub fn main() !void {
+    try init();
+    defer deinit();
+
+    var keep_open = true;
+    while (keep_open) {
+        var e: sdl.SDL_Event = undefined;
+        while (sdl.SDL_PollEvent(&e) > 0) {
+            switch (e.type) {
+                sdl.SDL_QUIT => keep_open = false,
+                else => {}
+            }
+        }
+
+        _ = sdl.SDL_RenderClear(renderer);
+
+        _ = sdl.SDL_RenderPresent(renderer);
+
+        //Wait 60hz
+        std.time.sleep(16 * 1000 * 1000);
+    }
+}