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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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "dreamweb/dreamweb.h"
#include "engines/util.h"
#include "graphics/surface.h"
#include "common/config-manager.h"
namespace DreamGen {
void DreamGenContext::turnpathonCPP(uint8 param) {
al = param;
push(es);
push(bx);
turnpathon();
bx = pop();
es = pop();
}
void DreamGenContext::turnpathoffCPP(uint8 param) {
al = param;
push(es);
push(bx);
turnpathoff();
bx = pop();
es = pop();
}
void DreamGenContext::getroomspaths() {
es = data.word(kReels);
bx = data.byte(kRoomnum) * 144;
}
uint8 *DreamGenContext::getroomspathsCPP() {
void *result = segRef(data.word(kReels)).ptr(data.byte(kRoomnum) * 144, 144);
return (uint8 *)result;
}
void DreamGenContext::autosetwalk() {
al = data.byte(kManspath);
if (data.byte(kFinaldest) == al)
return;
const uint8 *roomsPaths = getroomspathsCPP();
checkdest(roomsPaths);
data.word(kLinestartx) = roomsPaths[data.byte(kManspath) * 8 + 0] - 12;
data.word(kLinestarty) = roomsPaths[data.byte(kManspath) * 8 + 1] - 12;
data.word(kLineendx) = roomsPaths[data.byte(kDestination) * 8 + 0] - 12;
data.word(kLineendy) = roomsPaths[data.byte(kDestination) * 8 + 1] - 12;
bresenhams();
if (data.byte(kLinedirection) != 0) {
data.byte(kLinepointer) = data.byte(kLinelength) - 1;
data.byte(kLinedirection) = 1;
return;
}
data.byte(kLinepointer) = 0;
}
void DreamGenContext::checkdest(const uint8 *roomsPaths) {
const uint8 *p = roomsPaths + 12 * 8;
ah = data.byte(kManspath) << 4;
al = data.byte(kDestination);
uint8 destination = data.byte(kDestination);
for (size_t i = 0; i < 24; ++i) {
dh = p[0] & 0xf0;
dl = p[0] & 0x0f;
if (ax == dx) {
data.byte(kDestination) = p[1] & 0x0f;
return;
}
dl = (p[0] & 0xf0) >> 4;
dh = (p[0] & 0x0f) << 4;
if (ax == dx) {
destination = p[1] & 0x0f;
}
p += 2;
}
data.byte(kDestination) = destination;
}
void DreamGenContext::findxyfrompath() {
const uint8 *roomsPaths = getroomspathsCPP();
data.byte(kRyanx) = roomsPaths[data.byte(kManspath) * 8 + 0] - 12;
data.byte(kRyany) = roomsPaths[data.byte(kManspath) * 8 + 1] - 12;
}
} /*namespace dreamgen */
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