Source Translation

[Source Translation]

Please help me translating this source code to Hercules one.

	case NJ_ISSEN:
		status_change_end(src, SC_NEN, INVALID_TIMER);
		status_change_end(src, SC_HIDING, INVALID_TIMER);
		// fall through
	case MO_EXTREMITYFIST:
		if( skillid == MO_EXTREMITYFIST )
		{
			status_change_end(src, SC_EXPLOSIONSPIRITS, INVALID_TIMER);
			status_change_end(src, SC_BLADESTOP, INVALID_TIMER);
		}
		//Client expects you to move to target regardless of distance
		{
			struct unit_data *ud = unit_bl2ud(src);
			short dx,dy;
			int i,speed;
			i = skillid == MO_EXTREMITYFIST?1:2; //Move 2 cells for Issen, 1 for Asura
			dx = bl->x - src->x;
			dy = bl->y - src->y;
			if (dx < 0) dx-=i;
			else if (dx > 0) dx+=i;
			if (dy < 0) dy-=i;
			else if (dy > 0) dy+=i;
			if (!dx && !dy) dy++;
			if (map_getcell(src->m, src->x+dx, src->y+dy, CELL_CHKNOPASS))
			{
				dx = bl->x;
				dy = bl->y;
			} else {
				dx = src->x + dx;
				dy = src->y + dy;
			}

			skill_attack(BF_WEAPON,src,src,bl,skillid,skilllv,tick,flag);

			if(unit_walktoxy(src, dx, dy, 2) && ud) {
				//Increase can't walk delay to not alter your walk path
				ud->canmove_tick = tick;
				speed = status_get_speed(src);
				for (i = 0; i < ud->walkpath.path_len; i ++)
				{
					if(ud->walkpath.path[i]&1)
						ud->canmove_tick+=7*speed/5;
					else
						ud->canmove_tick+=speed;
				}
			}
		}
		break;

I tried looking for similar commands that Hercules has to eAthena but I still fail when I compile it. Additionally, I'm not good at reading scripts.