directiontables.h

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/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
 
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.
 
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
 
#pragma once
 
#include "irrlichttypes.h"
#include "irr_v3d.h"
 
enum Direction6D {
// 0
        D6D_ZP,
        D6D_YP,
        D6D_XP,
        D6D_ZN,
        D6D_YN,
        D6D_XN,
// 6
        D6D_XN_YP,
        D6D_XP_YP,
        D6D_YP_ZP,
        D6D_YP_ZN,
        D6D_XN_ZP,
        D6D_XP_ZP,
        D6D_XN_ZN,
        D6D_XP_ZN,
        D6D_XN_YN,
        D6D_XP_YN,
        D6D_YN_ZP,
        D6D_YN_ZN,
// 18
        D6D_XN_YP_ZP,
        D6D_XP_YP_ZP,
        D6D_XN_YP_ZN,
        D6D_XP_YP_ZN,
        D6D_XN_YN_ZP,
        D6D_XP_YN_ZP,
        D6D_XN_YN_ZN,
        D6D_XP_YN_ZN,
// 26
        D6D,
 
// aliases
        D6D_BACK   = D6D_ZP,
        D6D_TOP    = D6D_YP,
        D6D_RIGHT  = D6D_XP,
        D6D_FRONT  = D6D_ZN,
        D6D_BOTTOM = D6D_YN,
        D6D_LEFT   = D6D_XN,
};
 
enum DirectionWallmounted {
        // The 6 wallmounted directions
        DWM_YP,
        DWM_YN,
        DWM_XP,
        DWM_XN,
        DWM_ZP,
        DWM_ZN,
        // There are 6 wallmounted directions, but 8 possible states (3 bits).
        // So we have 2 additional states, which drawtypes might use for
        // special ("S") behavior.
        DWM_S1,
        DWM_S2,
        DWM_COUNT
};
 
extern const v3s16 g_6dirs[6];
 
extern const v3s16 g_7dirs[7];
 
extern const v3s16 g_26dirs[26];
 
// 26th is (0,0,0)
extern const v3s16 g_27dirs[27];
 
extern const u8 wallmounted_to_facedir[DWM_COUNT];
 
extern const v3s16 wallmounted_dirs[DWM_COUNT];
 
extern const v3s16 facedir_dirs[32];
 
extern const v3s16 fourdir_dirs[4];