From cf956575c4331e566d24cbf07d0995af5f370122 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Thu, 31 Mar 2022 17:51:00 -0700
Subject: [PATCH] use waiting rather than polling on window

---
 build.zig    | 84 ++++++++++++++++++++++++++++++++++++++++++++++++++--
 src/main.zig | 13 +++++++-
 2 files changed, 93 insertions(+), 4 deletions(-)

diff --git a/build.zig b/build.zig
index aaa195e31..7ecfb0a77 100644
--- a/build.zig
+++ b/build.zig
@@ -2,8 +2,6 @@ const std = @import("std");
 const Builder = std.build.Builder;
 const LibExeObjStep = std.build.LibExeObjStep;
 
-const raylib = @import("vendor/raylib/src/build.zig");
-
 pub fn build(b: *std.build.Builder) void {
     const target = b.standardTargetOptions(.{});
     const mode = b.standardReleaseOptions();
@@ -12,7 +10,7 @@ pub fn build(b: *std.build.Builder) void {
     exe.setTarget(target);
     exe.setBuildMode(mode);
     exe.install();
-    exe.linkLibrary(raylib.addRaylib(exe.builder, exe.target));
+    exe.linkLibrary(addRaylib(exe.builder, exe.target));
     exe.addIncludeDir("vendor/raylib/src"); // for raylib.h
 
     const run_cmd = exe.run();
@@ -24,3 +22,83 @@ pub fn build(b: *std.build.Builder) void {
     const run_step = b.step("run", "Run the app");
     run_step.dependOn(&run_cmd.step);
 }
+
+pub fn addRaylib(b: *std.build.Builder, target: std.zig.CrossTarget) *std.build.LibExeObjStep {
+    // Standard release options allow the person running `zig build` to select
+    // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
+    const mode = b.standardReleaseOptions();
+
+    const raylib_flags = &[_][]const u8{
+        "-std=gnu99",
+        "-DPLATFORM_DESKTOP",
+        "-DGL_SILENCE_DEPRECATION=199309L",
+        "-fno-sanitize=undefined", // https://github.com/raysan5/raylib/issues/1891
+        "-DSUPPORT_EVENTS_WAITING", // for waiting, not polling on events
+    };
+
+    const srcdir = "vendor/raylib/src";
+
+    const raylib = b.addStaticLibrary("raylib", srcdir ++ "/raylib.h");
+    raylib.setTarget(target);
+    raylib.setBuildMode(mode);
+    raylib.linkLibC();
+
+    raylib.addIncludeDir(srcdir ++ "/external/glfw/include");
+
+    raylib.addCSourceFiles(&.{
+        srcdir ++ "/raudio.c",
+        srcdir ++ "/rcore.c",
+        srcdir ++ "/rmodels.c",
+        srcdir ++ "/rshapes.c",
+        srcdir ++ "/rtext.c",
+        srcdir ++ "/rtextures.c",
+        srcdir ++ "/utils.c",
+    }, raylib_flags);
+
+    switch (raylib.target.toTarget().os.tag) {
+        .windows => {
+            raylib.addCSourceFiles(&.{srcdir ++ "/rglfw.c"}, raylib_flags);
+            raylib.linkSystemLibrary("winmm");
+            raylib.linkSystemLibrary("gdi32");
+            raylib.linkSystemLibrary("opengl32");
+            raylib.addIncludeDir("external/glfw/deps/mingw");
+        },
+        .linux => {
+            raylib.addCSourceFiles(&.{srcdir ++ "/rglfw.c"}, raylib_flags);
+            raylib.linkSystemLibrary("GL");
+            raylib.linkSystemLibrary("rt");
+            raylib.linkSystemLibrary("dl");
+            raylib.linkSystemLibrary("m");
+            raylib.linkSystemLibrary("X11");
+        },
+        .freebsd, .openbsd, .netbsd, .dragonfly => {
+            raylib.addCSourceFiles(&.{srcdir ++ "/rglfw.c"}, raylib_flags);
+            raylib.linkSystemLibrary("GL");
+            raylib.linkSystemLibrary("rt");
+            raylib.linkSystemLibrary("dl");
+            raylib.linkSystemLibrary("m");
+            raylib.linkSystemLibrary("X11");
+            raylib.linkSystemLibrary("Xrandr");
+            raylib.linkSystemLibrary("Xinerama");
+            raylib.linkSystemLibrary("Xi");
+            raylib.linkSystemLibrary("Xxf86vm");
+            raylib.linkSystemLibrary("Xcursor");
+        },
+        .macos => {
+            // On macos rglfw.c include Objective-C files.
+            const raylib_flags_extra_macos = &[_][]const u8{
+                "-ObjC",
+            };
+            raylib.addCSourceFiles(
+                &.{srcdir ++ "/rglfw.c"},
+                raylib_flags ++ raylib_flags_extra_macos,
+            );
+            raylib.linkFramework("Foundation");
+        },
+        else => {
+            @panic("Unsupported OS");
+        },
+    }
+
+    return raylib;
+}
diff --git a/src/main.zig b/src/main.zig
index 2e3e94d3f..f6fbcacd8 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -2,9 +2,20 @@ const std = @import("std");
 const c = @import("c.zig");
 
 pub fn main() !void {
+    // Set the window as resizable. This is particularly important for
+    // tiling window managers such as i3 since if they are not resizable they
+    // usually default to floating and we do not want to float by default!
+    c.SetConfigFlags(c.FLAG_WINDOW_RESIZABLE | c.FLAG_VSYNC_HINT);
+
+    // Create our window
     c.InitWindow(640, 480, "ghostty");
     c.SetTargetFPS(60);
     defer c.CloseWindow();
 
-    while (!c.WindowShouldClose()) {}
+    // Draw
+    while (!c.WindowShouldClose()) {
+        c.BeginDrawing();
+        c.ClearBackground(c.BLACK);
+        c.EndDrawing();
+    }
 }