//First of all, hello. Attribute:
//crawl-ref/source/attribute-type.h

	ATTR_DOORJUMP,


//You can change "DJ" to "Doorjump". No music there anyway.
//crawl-ref/source/status.cc

	case STATUS_DOORJUMP:
		if (you.attribute[ATTR_DOORJUMP])
		{
			inf.light_colour = WHITE;
			inf.light_text   = "DJ";
			inf.short_text   = "doorjump";
			inf.long_text    = "You can jump off closed doors.";
		}

//And line "STATUS_DOORJUMP," for /crawl-ref/source/status.h, if I understood it the right way.


//There goes simple ability, just as Sif's cast:
//crawl-ref/source/ability.cc

	{ ABIL_WU_JIAN_DOORJUMP, "Enable doorjumping",
	  0, 0, 0, 0, {fail_basis::invo}, abflag::instant | abflag::starve_ok },
	{ ABIL_WU_JIAN_STOP_DOORJUMP, "Stop doorjumping",
	  0, 0, 0, 0, {fail_basis::invo}, abflag::instant | abflag::starve_ok },

//The second part:

	case ABIL_WU_JIAN_DOORJUMP:
		mpr("You can jump off closed doors now.");
		you.attribute[ATTR_DOORJUMP] = 1;
		break;

	case ABIL_WU_JIAN_STOP_DOORJUMP:
		mpr("You can't jump off closed doors now.");
		you.attribute[ATTR_DOORJUMP] = 0;
		break;
	
//And the third part in "ability_type fixup_ability(ability_type ability)"

	case ABIL_WU_JIAN_DOORJUMP:
		if (you.attribute[ATTR_DOORJUMP])
			return ABIL_WU_JIAN_STOP_DOORJUMP;
		return ability;
		
// And the fourth part at 3638 line.
// However, I can't do this one, becouse I lack understanding
// of push_back() interaction with the third part.
// Will this work fine

   if (silenced(you.pos()) && you_worship(GOD_WU_JIAN) && piety_rank() >= 2)
       abilities.push_back(ABIL_WU_JIAN_DOORJUMP);

// or do I have to do it this way?

	 if (silenced(you.pos()) && you_worship(GOD_WU_JIAN) && piety_rank() >= 2)
		 if (!(you.attribute[ATTR_DOORJUMP]))
			abilities.push_back(ABIL_WU_JIAN_DOORJUMP);
		 else
			abilities.push_back(ABIL_WU_JIAN_STOP_DOORJUMP);

//And lines with this abilities' names for crawl-ref/source/ability-type.h, if I understood it the right way one more time.


//There goes religion. Look! Some pasta fell from the sky! What could it mean?
//crawl-ref/source/religion.cc

	// Wu Jian
	{ { 0, "perform damaging attacks by moving towards foes",
		   "perform lunging strikes" },
	  { 1, "lightly attack and pin monsters in place by moving around them",
		   "perform spinning attacks" },
	//  { 2, ABIL_WU_JIAN_WALLJUMP,
	//	   "perform airborne attacks" },
	  { 2, ABIL_WU_JIAN_DOORJUMP,
		   "perform airborne attacks" },
	  { 3, ABIL_WU_JIAN_SERPENTS_LASH, "briefly move at supernatural speeds",
		   "move at supernatural speeds" },
	  { 5, ABIL_WU_JIAN_HEAVENLY_STORM, "summon a storm of heavenly clouds to empower your attacks",
		   "summon a storm of heavenly clouds" },
	},

//Second part of religion. Turn off DJ in the
//void lose_piety(int pgn) function. Just next to Sif Muna's cast toggle.

	// Deactivate the toggle
	if (power.abil == ABIL_SIF_MUNA_DIVINE_ENERGY)
		you.attribute[ATTR_DIVINE_ENERGY] = 0;
	if (power.abil == ABIL_WU_JIAN_DOORJUMP)
		you.attribute[ATTR_DOORJUMP] = 0;
	

//There go pictures. Currently there's none, of course.
//crawl-ref/source/tilepick.cc

	// Wu Jian
	//    case ABIL_WU_JIAN_WALLJUMP:
	//        return TILEG_ABILITY_WU_JIAN_WALL_JUMP;
		case ABIL_WU_JIAN_DOORJUMP:
			return TILEG_ABIL_WU_JIAN_DOORJUMP;
		case ABIL_WU_JIAN_STOP_DOORJUMP:
			return TILEG_ABIL_WU_JIAN_STOP_DOORJUMP;
		case ABIL_WU_JIAN_SERPENTS_LASH:
			return TILEG_ABILITY_WU_JIAN_SERPENTS_LASH;
		case ABIL_WU_JIAN_HEAVENLY_STORM:
			return TILEG_ABILITY_WU_JIAN_HEAVENLY_STORM;


//No travel with DJ.
//You can turn off DJ when travel starts, but I'm too lazy to do that. Just let a player press the button.
//crawl-ref/source/travel.cc, 3027 line:

	void do_explore_cmd()
	{
		if (apply_starvation_penalties())
			mpr("You need to eat something NOW!");
		else if (you.berserk())
			mpr("Calm down first, please.");
		else if (you.attribute[ATTR_DOORJUMP])
			mpr("Stop using doors as walls, please."); //I'm not sure about the message, but this one looks nice.
		else if (player_in_branch(BRANCH_LABYRINTH))
			mpr("No exploration algorithm can help you here.");
		else                        // Start exploring
			start_explore(Options.explore_greedy);
	}

	
//Now delete doorjump stopper in the crawl-ref/source/main.cc 2965 line
//And call doorjump after the common walljump call at 3178 line with 'else if'.
//Perform doorjump if 'Y'; open door if 'n' or quit. "if I understood it the right way"
//crawl-ref/source/main.cc

	else if (can_wall_jump && !running)
	{
		if (!wu_jian_do_wall_jump(targ, false))
			return; // wall jump only in the ready state, or cancelled
		else
			did_wall_jump = true;
	}
	else if (can_wall_jump && feat_is_closed_door(targ_grid) && you.attribute[ATTR_DOORJUMP] && !running)
		if (yesno("Do you want to perform walljump?", false, 'n'))
		{
			if (!wu_jian_do_wall_jump(targ, false))
				return; // wall jump only in the ready state, or cancelled
			else
				did_wall_jump = true;
		}

		
//Turn DJ on, if went berserk. 
//crawl-ref/source/player-act.cc 715 line

	bool player::go_berserk(bool intentional, bool potion)
	{
		...
		if (have_passive(passive_t::wu_jian_wall_jump) && !you.attribute[ATTR_DOORJUMP])
		{
			mpr("You can jump off closed doors now."); //Not sure about message. Maybe omit?
			you.attribute[ATTR_DOORJUMP] = 1;
		}
		...
	}
	
//That's all I guess. Should fix bugs reported by CanOfWorms.
//Since that leaves only one way to activate walljump...

//And, maybe clear all leftover ABIL_WU_JIAN_WALLJUMP entries. Except for those matching other passive Wu Jian abilities.