convert submodules to normal folders for now

znoise/build.zig

@@ -0,0 +1,36 @@
+const std = @import("std");
+
+pub fn build(b: *std.Build) void {
+    const optimize = b.standardOptimizeOption(.{});
+    const target = b.standardTargetOptions(.{});
+
+    _ = b.addModule("root", .{
+        .root_source_file = b.path("src/znoise.zig"),
+    });
+
+    const fnl = b.addStaticLibrary(.{
+        .name = "FastNoiseLite",
+        .target = target,
+        .optimize = optimize,
+    });
+    fnl.linkLibC();
+    fnl.addIncludePath(b.path("libs/FastNoiseLite"));
+    fnl.addCSourceFile(.{
+        .file = b.path("libs/FastNoiseLite/FastNoiseLite.c"),
+        .flags = &.{ "-std=c99", "-fno-sanitize=undefined" },
+    });
+    b.installArtifact(fnl);
+
+    const test_step = b.step("test", "Run znoise tests");
+
+    const tests = b.addTest(.{
+        .name = "znoise-tests",
+        .root_source_file = b.path("src/znoise.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+    tests.linkLibrary(fnl);
+    b.installArtifact(tests);
+
+    test_step.dependOn(&b.addRunArtifact(tests).step);
+}