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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "ultima/ultima4/map/direction.h"
#include "ultima/ultima4/events/event_handler.h"
#include "ultima/ultima4/core/utils.h"
namespace Ultima {
namespace Ultima4 {
Direction dirReverse(Direction dir) {
switch (dir) {
case DIR_NONE:
return DIR_NONE;
case DIR_WEST:
return DIR_EAST;
case DIR_NORTH:
return DIR_SOUTH;
case DIR_EAST:
return DIR_WEST;
case DIR_SOUTH:
return DIR_NORTH;
case DIR_ADVANCE:
case DIR_RETREAT:
default:
break;
}
error("invalid direction: %d", dir);
return DIR_NONE;
}
Direction dirFromMask(int dir_mask) {
if (dir_mask & MASK_DIR_NORTH) return DIR_NORTH;
else if (dir_mask & MASK_DIR_EAST) return DIR_EAST;
else if (dir_mask & MASK_DIR_SOUTH) return DIR_SOUTH;
else if (dir_mask & MASK_DIR_WEST) return DIR_WEST;
return DIR_NONE;
}
Direction dirRotateCW(Direction dir) {
dir = static_cast<Direction>(dir + 1);
if (dir > DIR_SOUTH)
dir = DIR_WEST;
return dir;
}
Direction dirRotateCCW(Direction dir) {
dir = static_cast<Direction>(dir - 1);
if (dir < DIR_WEST)
dir = DIR_SOUTH;
return dir;
}
int dirGetBroadsidesDirs(Direction dir) {
int dirmask = MASK_DIR_ALL;
dirmask = DIR_REMOVE_FROM_MASK(dir, dirmask);
dirmask = DIR_REMOVE_FROM_MASK(dirReverse(dir), dirmask);
return dirmask;
}
Direction dirRandomDir(int valid_directions_mask) {
int i, n;
Direction d[4];
n = 0;
for (i = DIR_WEST; i <= DIR_SOUTH; i++) {
if (DIR_IN_MASK(i, valid_directions_mask)) {
d[n] = static_cast<Direction>(i);
n++;
}
}
if (n == 0)
return DIR_NONE;
return d[xu4_random(n)];
}
Direction dirNormalize(Direction orientation, Direction dir) {
Direction temp = orientation,
realDir = dir;
while (temp != DIR_NORTH) {
temp = dirRotateCW(temp);
realDir = dirRotateCCW(realDir);
}
return realDir;
}
Direction keyToDirection(int key) {
switch (key) {
case Common::KEYCODE_UP:
return DIR_NORTH;
case Common::KEYCODE_DOWN:
return DIR_SOUTH;
case Common::KEYCODE_LEFT:
return DIR_WEST;
case Common::KEYCODE_RIGHT:
return DIR_EAST;
default:
return DIR_NONE;
}
}
int directionToKey(Direction dir) {
switch (dir) {
case DIR_WEST:
return Common::KEYCODE_LEFT;
case DIR_NORTH:
return Common::KEYCODE_UP;
case DIR_EAST:
return Common::KEYCODE_RIGHT;
case DIR_SOUTH:
return Common::KEYCODE_DOWN;
case DIR_NONE:
case DIR_ADVANCE:
case DIR_RETREAT:
default:
break;
}
error("Invalid diration passed to directionToKey()");
return 0;
}
} // End of namespace Ultima4
} // End of namespace Ultima
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