fix defaults on hardcodeTNTangle

src/main/java/carpet/CarpetSettings.java

@@ -131,7 +131,7 @@ public class CarpetSettings
 
     @Rule( desc = "Sets the horizontal random angle on TNT for debugging of TNT contraptions", category = TNT, options = "-1", strict = false,
             validate = TNTAngleValidator.class, extra = "Set to -1 for default behavior")
-    public static double hardcodeTNTangle;
+    public static double hardcodeTNTangle = -1.0D;
 
     private static class TNTAngleValidator extends Validator<Double> {
         @Override

src/main/java/carpet/mixins/TntEntityMixin.java

@@ -36,7 +36,7 @@ public abstract class TntEntityMixin extends Entity implements TntEntityInterfac
                 at = @At("RETURN"))
     private void modifyTNTAngle(World world, double x, double y, double z, LivingEntity entity, CallbackInfo ci)
     {
-        if (CarpetSettings.hardcodeTNTangle != -1)
+        if (CarpetSettings.hardcodeTNTangle != -1.0D)
             setVelocity(-Math.sin(CarpetSettings.hardcodeTNTangle) * 0.02, 0.2, -Math.cos(CarpetSettings.hardcodeTNTangle) * 0.02);
     }