Defer unloading of textures and images in group

- Added Clap to the library for future passing of CLI arguments

build.zig

@@ -45,6 +45,15 @@ pub fn build(b: *std.Build) void {
     // exe.root_module.addImport("raylib-gui", raylib_gui);
     exe.root_module.addImport("rlgl", rlgl);
 
+    const clap_dep = b.dependency("clap", .{
+        .target = target,
+        .optimize = optimize,
+    });
+
+    const clap = clap_dep.module("clap"); // main clap module
+
+    exe.root_module.addImport("clap", clap);
+
     // 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`).

build.zig.zon

@@ -7,7 +7,7 @@
     // This field is optional.
     // This is currently advisory only; Zig does not yet do anything
     // with this value.
-    .minimum_zig_version = "0.12.0",
+    .minimum_zig_version = "0.11.0",
 
     // This field is optional.
     // Each dependency must either provide a `url` and `hash`, or a `path`.
@@ -19,6 +19,10 @@
             .url = "https://github.com/tonytins/raylib-zig/archive/refs/tags/v5.1.103-dev.tar.gz",
             .hash = "1220f48ef45b22a393da16f3210b61b87ad9b65d215d02c51189861a57a1b4290059",
         },
+        .clap = .{
+            .url = "https://github.com/Hejsil/zig-clap/archive/refs/tags/0.8.0.tar.gz",
+            .hash = "1220949d4e88864579067b6d4cdad6476c6176f27e782782c2c39b7f2c4817a10efb",
+        },
     },
     .paths = .{
         // This makes *all* files, recursively, included in this package. It is generally

src/main.zig

@@ -2,6 +2,7 @@ const std = @import("std");
 const rl = @import("raylib");
 const world = @import("world.zig");
 const nso = @import("niotso.zig");
+const clap = @import("clap");
 
 const dbg = std.debug;
 
@@ -104,11 +105,14 @@ pub fn main() anyerror!void {
     const chair2_rect = rl.Rectangle.init(0, 0, @as(f32, @floatFromInt(-chair2.width)), @as(f32, @floatFromInt(chair2.height)));
     const city = rl.loadImage("resources/cities/city_0100/elevation.png");
     // const city_texture = rl.Texture.init("resources/cities/city_0100/vertexcolor.png");
-    defer rl.unloadTexture(splash);
-    defer rl.unloadTexture(logo);
-    defer rl.unloadTexture(chair1);
-    defer rl.unloadTexture(chair2);
-    defer rl.unloadImage(city);
+    // TODO: figure out a better way to unload all images and textures.
+    defer {
+        rl.unloadTexture(splash);
+        rl.unloadTexture(logo);
+        rl.unloadTexture(chair1);
+        rl.unloadTexture(chair2);
+        rl.unloadImage(city);
+    }
 
     const mesh = rl.genMeshHeightmap(city, rl.Vector3.init(16, 8, 16));
     const model = rl.loadModelFromMesh(mesh);