Updates for zig build

[charlieman]

This updates the build.zig file to work with the new Build API, which raylib master is already using. It also uses the new indexing in for loops.

In raylib-zig-math.zig I had to import raylib as a module instead of the file directly otherwise zig complains with this error:

lib\raylib-zig.zig:1:1: error: file exists in multiple modules
lib\raylib-zig.zig:1:1: note: root of module root.raylib
lib\raylib-zig-math.zig:1:20: note: imported from module root.raylib-math
const rl = @import("raylib-zig.zig");
                   ^~~~~~~~~~~~~~~~
lib\raylib-wa.zig:1:20: note: imported from module root.raylib
const rl = @import("raylib-zig.zig");
                   ^~~~~~~~~~~~~~~~

Running the generator also added/removed some functions.

Tested the examples with zig version 0.11.0-dev.1910+6d7fb8f19

[Not-Nik]

Reopen when Zig 0.11 is released

[ezntek]

zig 0.11 is now released, and I added it in the build.zig.zon file, with all the metadata. However, when building, zig build panics on unable to find artifact 'raylib'.

relavant extract of build.zig:

    const raylib = b.dependency("raylib", .{
        .target = target,
        .optimize = optimize,
    });

    const exe = b.addExecutable(.{
        .name = "beanmaths",
        // 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,
    });

    exe.addModule("raylib", raylib.module("raylib"));
    exe.linkLibrary(raylib.artifact("raylib"));

    // 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`).
    b.installArtifact(exe);

[Not-Nik]

Maybe that's because in our build.zig.zon the library is called raylib-zig

[ezntek]

well its named raylib in mine, and the tarball is independent from the package name in youyr build.zig.zon.

I still changed it, and it still doesnt work, with the error being unable to find module