mirror of
https://github.com/libretro/scummvm.git
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135 lines
3.9 KiB
C++
135 lines
3.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "dreamweb/dreamweb.h"
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namespace DreamGen {
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void DreamGenContext::turnpathon() {
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turnpathon(al);
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}
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void DreamGenContext::turnpathon(uint8 param) {
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findormake(param, 0xff, data.byte(kRoomnum) + 100);
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PathNode *roomsPaths = getroomspaths()->nodes;
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if (param == 0xff)
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return;
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roomsPaths[param].on = 0xff;
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}
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void DreamGenContext::turnpathoff() {
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turnpathoff(al);
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}
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void DreamGenContext::turnpathoff(uint8 param) {
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findormake(param, 0x00, data.byte(kRoomnum) + 100);
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PathNode *roomsPaths = getroomspaths()->nodes;
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if (param == 0xff)
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return;
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roomsPaths[param].on = 0x00;
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}
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void DreamGenContext::turnanypathon(uint8 param, uint8 room) {
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findormake(param, 0xff, room + 100);
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PathNode *paths = (PathNode *)segRef(data.word(kReels)).ptr(kPathdata + 144 * room, 0);
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paths[param].on = 0xff;
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}
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void DreamGenContext::turnanypathon() {
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turnanypathon(al, ah);
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}
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void DreamGenContext::turnanypathoff(uint8 param, uint8 room) {
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findormake(param, 0x00, room + 100);
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PathNode *paths = (PathNode *)segRef(data.word(kReels)).ptr(kPathdata + 144 * room, 0);
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paths[param].on = 0x00;
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}
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void DreamGenContext::turnanypathoff() {
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turnanypathoff(al, ah);
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}
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RoomPaths *DreamGenContext::getroomspaths() {
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void *result = segRef(data.word(kReels)).ptr(data.byte(kRoomnum) * 144, 144);
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return (RoomPaths *)result;
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}
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void DreamGenContext::autosetwalk() {
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al = data.byte(kManspath);
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if (data.byte(kFinaldest) == al)
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return;
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const RoomPaths *roomsPaths = getroomspaths();
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checkdest(roomsPaths);
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data.word(kLinestartx) = roomsPaths->nodes[data.byte(kManspath)].x - 12;
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data.word(kLinestarty) = roomsPaths->nodes[data.byte(kManspath)].y - 12;
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data.word(kLineendx) = roomsPaths->nodes[data.byte(kDestination)].x - 12;
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data.word(kLineendy) = roomsPaths->nodes[data.byte(kDestination)].y - 12;
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bresenhams();
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if (data.byte(kLinedirection) != 0) {
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data.byte(kLinepointer) = data.byte(kLinelength) - 1;
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data.byte(kLinedirection) = 1;
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return;
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}
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data.byte(kLinepointer) = 0;
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}
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void DreamGenContext::checkdest(const RoomPaths *roomsPaths) {
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const PathSegment *segments = roomsPaths->segments;
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ah = data.byte(kManspath) << 4;
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al = data.byte(kDestination);
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uint8 destination = data.byte(kDestination);
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for (size_t i = 0; i < 24; ++i) {
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dh = segments[i].b0 & 0xf0;
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dl = segments[i].b0 & 0x0f;
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if (ax == dx) {
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data.byte(kDestination) = segments[i].b1 & 0x0f;
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return;
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}
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dl = (segments[i].b0 & 0xf0) >> 4;
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dh = (segments[i].b0 & 0x0f) << 4;
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if (ax == dx) {
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destination = segments[i].b1 & 0x0f;
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}
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}
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data.byte(kDestination) = destination;
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}
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void DreamGenContext::findxyfrompath() {
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const PathNode *roomsPaths = getroomspaths()->nodes;
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data.byte(kRyanx) = roomsPaths[data.byte(kManspath)].x - 12;
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data.byte(kRyany) = roomsPaths[data.byte(kManspath)].y - 12;
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}
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void DreamGenContext::checkifpathison() {
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flags._z = checkifpathison(al);
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}
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bool DreamGenContext::checkifpathison(uint8 index) {
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RoomPaths *roomsPaths = getroomspaths();
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uint8 pathOn = roomsPaths->nodes[index].on;
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return pathOn == 0xff;
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}
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} /*namespace dreamgen */
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