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Diffstat (limited to 'engines/dreamweb/pathfind.cpp')
| -rw-r--r-- | engines/dreamweb/pathfind.cpp | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/engines/dreamweb/pathfind.cpp b/engines/dreamweb/pathfind.cpp new file mode 100644 index 0000000000..2579105c6f --- /dev/null +++ b/engines/dreamweb/pathfind.cpp @@ -0,0 +1,106 @@ +/* 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 */ + |