move to a model where there is a sample game and a possible real game

.gitignore

@@ -1,6 +1,7 @@
 .DS_Store
 .build/
 dist/
+game/
 first
 packs/*
 first.dSYM/Contents

first.jai

@@ -1,6 +1,7 @@
 #load "./src/meta/meta.jai";
 
 Iprof :: #import "Iprof"(IMPORT_MODE = .METAPROGRAM);
+#import "File_Utilities";
 
 #run {
     print("%\n", ascii_car);
@@ -80,6 +81,15 @@ Iprof :: #import "Iprof"(IMPORT_MODE = .METAPROGRAM);
         add_build_file("src/platform_specific/main_web.jai", w);
         add_build_string("HAS_TACOMA :: false;", w);
         add_build_string("HAS_IPROF :: false;", w);
+
+        if is_directory("./game") {
+            add_build_string("USE_SAMPLE_GAME :: false;", w);
+        } else {
+            add_build_string("USE_SAMPLE_GAME :: true;", w);
+            
+        }
+        
+        
         add_shaders_to_workspace(w);
 
         while true {
@@ -157,6 +167,13 @@ Iprof :: #import "Iprof"(IMPORT_MODE = .METAPROGRAM);
         } else {
             add_build_string("HAS_TACOMA :: false;", w);
         }
+
+        if is_directory("./game") {
+            add_build_string("USE_SAMPLE_GAME :: false;", w);
+        } else {
+            add_build_string("USE_SAMPLE_GAME :: true;", w);
+        }
+
         if profile {
             add_build_string("HAS_IPROF :: true;", w);
             iprof_plugin.add_source(iprof_plugin);

src/main.jai

@@ -25,7 +25,11 @@ stbi   :: #import "stb_image";
 #load "ray.jai";
 #load "world.jai";
     
+#if USE_SAMPLE_GAME {
+    #load "../sample_game/game.jai";
+} else {
     #load "../game/game.jai";
+}
 
 last_frame_time : float64;
 delta\    _time : float64;