add define to remove health fields (HaxeFlixel#3067)

* add define to remove health fields

* add define to coverage

Author: Geokureli

flixel/FlxObject.hx

@@ -699,11 +699,13 @@ class FlxObject extends FlxBasic
 	 */
 	public var maxAngular:Float = 10000;
 
+	#if FLX_HEALTH
 	/**
 	 * Handy for storing health percentage or armor points or whatever.
 	 */
-	@:deprecated("This is no longer needed, as you can extend FlxObject")
+	@:deprecated("object.health is being removed in version 6.0.0")
 	public var health:Float = 1;
+	#end
 
 	/**
 	 * Bit field of flags (use with UP, DOWN, LEFT, RIGHT, etc) indicating surface contacts. Use bitwise operators to check the values
@@ -1200,19 +1202,21 @@ class FlxObject extends FlxBasic
 		return touching.hasAny(direction) && !wasTouching.hasAny(direction);
 	}
 
+	#if FLX_HEALTH
 	/**
 	 * Reduces the `health` variable of this object by the amount specified in `Damage`.
 	 * Calls `kill()` if health drops to or below zero.
 	 *
 	 * @param   Damage   How much health to take away (use a negative number to give a health bonus).
 	 */
-	@:deprecated("This is no longer needed, as you can extend FlxObject")
+	@:deprecated("object.health is being removed in version 6.0.0")
 	public function hurt(damage:Float):Void
 	{
 		health = health - damage;
 		if (health <= 0)
 			kill();
 	}
+	#end
 
 	/**
 	 * Centers this `FlxObject` on the screen, either by the x axis, y axis, or both.

flixel/system/macros/FlxDefines.hx

@@ -22,6 +22,8 @@ private enum UserDefines
 	FLX_NO_SOUND_TRAY;
 	FLX_NO_FOCUS_LOST_SCREEN;
 	FLX_NO_DEBUG;
+	/* Removes FlxObject.health */
+	FLX_NO_HEALTH;
 	FLX_RECORD;
 	/* Defined in HaxeFlixel CI tests, do not use */
 	FLX_UNIT_TEST;
@@ -77,6 +79,7 @@ private enum HelperDefines
 	/* Used in HaxeFlixel CI, should have no effect on personal projects */
 	FLX_NO_CI;
 	FLX_SAVE;
+	FLX_HEALTH;
 }
 
 class FlxDefines
@@ -169,6 +172,7 @@ class FlxDefines
 		defineInversion(FLX_UNIT_TEST, FLX_NO_UNIT_TEST);
 		defineInversion(FLX_COVERAGE_TEST, FLX_NO_COVERAGE_TEST);
 		defineInversion(FLX_SWF_VERSION_TEST, FLX_NO_SWF_VERSION_TEST);
+		defineInversion(FLX_NO_HEALTH, FLX_HEALTH);
 	}
 
 	static function defineHelperDefines()

tests/coverage/Project.xml

@@ -49,6 +49,7 @@
 		<haxedef name="FLX_RECORD" />
 		<haxedef name="FLX_RENDER_TRIANGLE" />
 		<haxedef name="FLX_NO_SAVE" />
+		<haxedef name="FLX_NO_HEALTH" />
 	</section>
 	<section if="coverage2">
 		<haxedef name="debug" />