added a way to use ANSI codes on Windows, with a very small library

arc-core/build.gradle

@@ -5,6 +5,14 @@ sourceSets.test.resources.srcDirs = ["test/resources"]
 dependencies{
     testImplementation libraries.junit
     testImplementation aproj(":natives:natives-desktop")
+
+    if (System.getProperty("os.name").toLowerCase().contains("windows")) {
+        implementation "org.fusesource.jansi:jansi-native:1.1"
+        implementation "org.fusesource.jansi:jansi-native:1.1:windows32"
+        implementation "org.fusesource.jansi:jansi-native:1.1:windows64"
+    } else {
+        compileOnly "org.fusesource.jansi:jansi-native:1.1"
+    }
 }
 
 test{

arc-core/src/arc/util/ColorCodes.java

@@ -1,56 +1,73 @@
 package arc.util;
 
-import arc.struct.*;
+import arc.struct.ObjectMap;
+
+import org.fusesource.jansi.internal.Kernel32;
 
-/** Note that these color codes will only work on linux or mac terminals. */
 public class ColorCodes{
     public static String
-    flush = "\033[H\033[2J",
-    reset = "\u001B[0m",
-    bold = "\u001B[1m",
-    italic = "\u001B[3m",
-    underline = "\u001B[4m",
-    black = "\u001B[30m",
-    red = "\u001B[31m",
-    green = "\u001B[32m",
-    yellow = "\u001B[33m",
-    blue = "\u001B[34m",
-    purple = "\u001B[35m",
-    cyan = "\u001B[36m",
-    lightBlack = "\u001b[90m",
-    lightRed = "\u001B[91m",
-    lightGreen = "\u001B[92m",
-    lightYellow = "\u001B[93m",
-    lightBlue = "\u001B[94m",
-    lightMagenta = "\u001B[95m",
-    lightCyan = "\u001B[96m",
-    lightWhite = "\u001b[97m",
-    white = "\u001B[37m",
+        flush = "\033[H\033[2J",
+        reset = "\u001B[0m",
+        bold = "\u001B[1m",
+        italic = "\u001B[3m",
+        underline = "\u001B[4m",
+        black = "\u001B[30m",
+        red = "\u001B[31m",
+        green = "\u001B[32m",
+        yellow = "\u001B[33m",
+        blue = "\u001B[34m",
+        purple = "\u001B[35m",
+        cyan = "\u001B[36m",
+        lightBlack = "\u001B[90m",
+        lightRed = "\u001B[91m",
+        lightGreen = "\u001B[92m",
+        lightYellow = "\u001B[93m",
+        lightBlue = "\u001B[94m",
+        lightMagenta = "\u001B[95m",
+        lightCyan = "\u001B[96m",
+        lightWhite = "\u001B[97m",
+        white = "\u001B[37m",
 
-    backDefault = "\u001B[49m",
-    backRed = "\u001B[41m",
-    backGreen = "\u001B[42m",
-    backYellow = "\u001B[43m",
-    backBlue = "\u001B[44m";
+        backDefault = "\u001B[49m",
+        backRed = "\u001B[41m",
+        backGreen = "\u001B[42m",
+        backYellow = "\u001B[43m",
+        backBlue = "\u001B[44m";
 
     public static final String[] codes, values;
+    public static final boolean ansiSupported;
 
     static{
+        boolean ansi = true;
+
+        //try to enable color codes on windows, with powershell
+        if(OS.isWindows && !OS.hasEnv("WT_SESSION")){
+            try{ 
+                // from https://github.com/alexarchambault/windows-ansi/blob/master/jni/src/main/java/io/github/alexarchambault/windowsansi/WindowsAnsi.java
+                long console = Kernel32.GetStdHandle(Kernel32.STD_OUTPUT_HANDLE);
+                int[] mode = new int[1];
+                if (Kernel32.GetConsoleMode(console, mode) == 0) throw new RuntimeException("failed to get console mode");
+                mode[0] |= 0x0004; // ENABLE_VIRTUAL_TERMINAL_PROCESSING
+                if (Kernel32.SetConsoleMode(console, mode[0]) == 0) throw new RuntimeException("failed to set console mode");
+
+            }catch (Throwable e){ 
+                System.out.println("Failed to enable ANSI escape codes: " + e.toString());
+                ansi = false;
+            }
+        //disable color codes on android
+        }else if (OS.isAndroid){
+            ansi = false;
+        }
 
-        //disable color codes on windows/android (ignore windows terminal which supports colors)
-        if((OS.isWindows && !OS.hasEnv("WT_SESSION")) || OS.isAndroid){
+        ansiSupported = ansi;
+
+        if(!ansiSupported){
             flush = reset = bold = underline = black = red = green = yellow = blue = purple = cyan = lightWhite
             = lightBlack = lightRed = lightGreen = lightYellow = lightBlue = lightMagenta = lightCyan
             = white = backDefault = backRed = backYellow = backBlue = backGreen = italic = "";
         }
 
-        OrderedMap<String, String> map = OrderedMap.of(
-        "bd", backDefault,
-        "br", backRed,
-        "bg", backGreen,
-        "by", backYellow,
-        "bb", backBlue,
-
+        ObjectMap<String, String> map = ObjectMap.of(
         "ff", flush,
         "fr", reset,
         "fb", bold,
@@ -71,11 +88,16 @@ public class ColorCodes{
         "lm", lightMagenta,
         "lb", lightBlue,
         "lc", lightCyan,
-        "w", white
+        "w", white,
+
+        "bd", backDefault,
+        "br", backRed,
+        "bg", backGreen,
+        "by", backYellow,
+        "bb", backBlue
         );
 
-        codes = map.orderedKeys().toArray(String.class);
+        codes = map.keys().toSeq().toArray(String.class);
         values = map.values().toSeq().toArray(String.class);
     }
-
 }