/* 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 "scumm/scumm.h" #include "scumm/actor.h" #include "scumm/charset.h" #include "scumm/scumm_v7.h" #include "common/util.h" namespace Scumm { void ScummEngine::setCameraAtEx(int at) { if (_game.version < 7) { camera._mode = kNormalCameraMode; camera._cur.x = at; setCameraAt(at, 0); camera._movingToActor = false; } } void ScummEngine::setCameraAt(int pos_x, int pos_y) { if (camera._mode != kFollowActorCameraMode || ABS(pos_x - camera._cur.x) > (_screenWidth / 2)) { camera._cur.x = pos_x; } camera._dest.x = pos_x; if (VAR_CAMERA_MIN_X != 0xFF && camera._cur.x < VAR(VAR_CAMERA_MIN_X)) camera._cur.x = (short) VAR(VAR_CAMERA_MIN_X); if (VAR_CAMERA_MAX_X != 0xFF && camera._cur.x > VAR(VAR_CAMERA_MAX_X)) camera._cur.x = (short) VAR(VAR_CAMERA_MAX_X); if (VAR_SCROLL_SCRIPT != 0xFF && VAR(VAR_SCROLL_SCRIPT)) { VAR(VAR_CAMERA_POS_X) = camera._cur.x; runScript(VAR(VAR_SCROLL_SCRIPT), 0, 0, 0); } // If the camera moved and text is visible, remove it if (camera._cur.x != camera._last.x && _charset->_hasMask && _game.version > 3) stopTalk(); } void ScummEngine::setCameraFollows(Actor *a, bool setCamera) { int t, i; camera._mode = kFollowActorCameraMode; camera._follows = a->_number; if (!a->isInCurrentRoom()) { startScene(a->getRoom(), 0, 0); camera._mode = kFollowActorCameraMode; camera._cur.x = a->getPos().x; setCameraAt(camera._cur.x, 0); } t = a->getPos().x / 8 - _screenStartStrip; if (t < camera._leftTrigger || t > camera._rightTrigger || setCamera == true) setCameraAt(a->getPos().x, 0); for (i = 1; i < _numActors; i++) { if (_actors[i]->isInCurrentRoom()) _actors[i]->_needRedraw = true; } runInventoryScript(0); } void ScummEngine::clampCameraPos(Common::Point *pt) { pt->x = CLIP<short>(pt->x, VAR(VAR_CAMERA_MIN_X), VAR(VAR_CAMERA_MAX_X)); pt->y = CLIP<short>(pt->y, VAR(VAR_CAMERA_MIN_Y), VAR(VAR_CAMERA_MAX_Y)); } void ScummEngine::moveCamera() { int pos = camera._cur.x; int t; Actor *a = NULL; const bool snapToX = (_snapScroll || (VAR_CAMERA_FAST_X != 0xFF && VAR(VAR_CAMERA_FAST_X))); camera._cur.x &= 0xFFF8; if (VAR_CAMERA_MIN_X != 0xFF && camera._cur.x < VAR(VAR_CAMERA_MIN_X)) { if (snapToX) camera._cur.x = (short) VAR(VAR_CAMERA_MIN_X); else camera._cur.x += 8; cameraMoved(); return; } if (VAR_CAMERA_MAX_X != 0xFF && camera._cur.x > VAR(VAR_CAMERA_MAX_X)) { if (snapToX) camera._cur.x = (short) VAR(VAR_CAMERA_MAX_X); else camera._cur.x -= 8; cameraMoved(); return; } if (camera._mode == kFollowActorCameraMode) { a = derefActor(camera._follows, "moveCamera"); int actorx = a->getPos().x; t = actorx / 8 - _screenStartStrip; if (t < camera._leftTrigger || t > camera._rightTrigger) { if (snapToX) { if (t > 40-5) camera._dest.x = actorx + 80; if (t < 5) camera._dest.x = actorx - 80; } else camera._movingToActor = true; } } if (camera._movingToActor) { a = derefActor(camera._follows, "moveCamera(2)"); camera._dest.x = a->getPos().x; } if (VAR_CAMERA_MIN_X != 0xFF && camera._dest.x < VAR(VAR_CAMERA_MIN_X)) camera._dest.x = (short) VAR(VAR_CAMERA_MIN_X); if (VAR_CAMERA_MAX_X != 0xFF && camera._dest.x > VAR(VAR_CAMERA_MAX_X)) camera._dest.x = (short) VAR(VAR_CAMERA_MAX_X); if (snapToX) { camera._cur.x = camera._dest.x; } else { if (camera._cur.x < camera._dest.x) camera._cur.x += 8; if (camera._cur.x > camera._dest.x) camera._cur.x -= 8; } /* Actor 'a' is set a bit above */ if (camera._movingToActor && (camera._cur.x / 8) == (a->getPos().x / 8)) { camera._movingToActor = false; } cameraMoved(); if (VAR_SCROLL_SCRIPT != 0xFF && VAR(VAR_SCROLL_SCRIPT) && pos != camera._cur.x) { VAR(VAR_CAMERA_POS_X) = camera._cur.x; runScript(VAR(VAR_SCROLL_SCRIPT), 0, 0, 0); } } void ScummEngine::cameraMoved() { int screenLeft; if (_game.version >= 7) { assert(camera._cur.x >= (_screenWidth / 2) && camera._cur.y >= (_screenHeight / 2)); } else { if (camera._cur.x < (_screenWidth / 2)) { camera._cur.x = (_screenWidth / 2); } else if (camera._cur.x > _roomWidth - (_screenWidth / 2)) { camera._cur.x = _roomWidth - (_screenWidth / 2); } } _screenStartStrip = camera._cur.x / 8 - _gdi->_numStrips / 2; _screenEndStrip = _screenStartStrip + _gdi->_numStrips - 1; _screenTop = camera._cur.y - (_screenHeight / 2); if (_game.version >= 7) { screenLeft = camera._cur.x - (_screenWidth / 2); } else { screenLeft = _screenStartStrip * 8; } _virtscr[kMainVirtScreen].xstart = screenLeft; } void ScummEngine::panCameraTo(int x, int y) { camera._dest.x = x; camera._mode = kPanningCameraMode; camera._movingToActor = false; } void ScummEngine::actorFollowCamera(int act) { if (_game.version < 7) { int old; old = camera._follows; setCameraFollows(derefActor(act, "actorFollowCamera")); if (camera._follows != old) runInventoryScript(0); camera._movingToActor = false; } } #ifdef ENABLE_SCUMM_7_8 void ScummEngine_v7::setCameraAt(int pos_x, int pos_y) { Common::Point old; old = camera._cur; camera._cur.x = pos_x; camera._cur.y = pos_y; clampCameraPos(&camera._cur); camera._dest = camera._cur; VAR(VAR_CAMERA_DEST_X) = camera._dest.x; VAR(VAR_CAMERA_DEST_Y) = camera._dest.y; assert(camera._cur.x >= (_screenWidth / 2) && camera._cur.y >= (_screenHeight / 2)); if (camera._cur.x != old.x || camera._cur.y != old.y) { if (VAR(VAR_SCROLL_SCRIPT)) { VAR(VAR_CAMERA_POS_X) = camera._cur.x; VAR(VAR_CAMERA_POS_Y) = camera._cur.y; runScript(VAR(VAR_SCROLL_SCRIPT), 0, 0, 0); } // Even though cameraMoved() is called automatically, we may // need to know at once that the camera has moved, or text may // be printed at the wrong coordinates. See bugs #795938 and // #929242 cameraMoved(); } } void ScummEngine_v7::setCameraFollows(Actor *a, bool setCamera) { byte oldfollow = camera._follows; int ax, ay; camera._follows = a->_number; VAR(VAR_CAMERA_FOLLOWED_ACTOR) = a->_number; if (!a->isInCurrentRoom()) { startScene(a->getRoom(), 0, 0); } ax = ABS(a->getPos().x - camera._cur.x); ay = ABS(a->getPos().y - camera._cur.y); if (ax > VAR(VAR_CAMERA_THRESHOLD_X) || ay > VAR(VAR_CAMERA_THRESHOLD_Y) || ax > (_screenWidth / 2) || ay > (_screenHeight / 2)) { setCameraAt(a->getPos().x, a->getPos().y); } if (a->_number != oldfollow) runInventoryScript(0); } void ScummEngine_v7::moveCamera() { Common::Point old = camera._cur; Actor *a = NULL; if (camera._follows) { a = derefActor(camera._follows, "moveCamera"); if (ABS(camera._cur.x - a->getPos().x) > VAR(VAR_CAMERA_THRESHOLD_X) || ABS(camera._cur.y - a->getPos().y) > VAR(VAR_CAMERA_THRESHOLD_Y)) { camera._movingToActor = true; if (VAR(VAR_CAMERA_THRESHOLD_X) == 0) camera._cur.x = a->getPos().x; if (VAR(VAR_CAMERA_THRESHOLD_Y) == 0) camera._cur.y = a->getPos().y; clampCameraPos(&camera._cur); } } else { camera._movingToActor = false; } if (camera._movingToActor) { VAR(VAR_CAMERA_DEST_X) = camera._dest.x = a->getPos().x; VAR(VAR_CAMERA_DEST_Y) = camera._dest.y = a->getPos().y; } assert(camera._cur.x >= (_screenWidth / 2) && camera._cur.y >= (_screenHeight / 2)); clampCameraPos(&camera._dest); if (camera._cur.x < camera._dest.x) { camera._cur.x += (short) VAR(VAR_CAMERA_SPEED_X); if (camera._cur.x > camera._dest.x) camera._cur.x = camera._dest.x; } if (camera._cur.x > camera._dest.x) { camera._cur.x -= (short) VAR(VAR_CAMERA_SPEED_X); if (camera._cur.x < camera._dest.x) camera._cur.x = camera._dest.x; } if (camera._cur.y < camera._dest.y) { camera._cur.y += (short) VAR(VAR_CAMERA_SPEED_Y); if (camera._cur.y > camera._dest.y) camera._cur.y = camera._dest.y; } if (camera._cur.y > camera._dest.y) { camera._cur.y -= (short) VAR(VAR_CAMERA_SPEED_Y); if (camera._cur.y < camera._dest.y) camera._cur.y = camera._dest.y; } if (camera._cur.x == camera._dest.x && camera._cur.y == camera._dest.y) { camera._movingToActor = false; camera._accel.x = camera._accel.y = 0; VAR(VAR_CAMERA_SPEED_X) = VAR(VAR_CAMERA_SPEED_Y) = 0; } else { camera._accel.x += (short) VAR(VAR_CAMERA_ACCEL_X); camera._accel.y += (short) VAR(VAR_CAMERA_ACCEL_Y); VAR(VAR_CAMERA_SPEED_X) += camera._accel.x / 100; VAR(VAR_CAMERA_SPEED_Y) += camera._accel.y / 100; if (VAR(VAR_CAMERA_SPEED_X) > 8) VAR(VAR_CAMERA_SPEED_X) = 8; if (VAR(VAR_CAMERA_SPEED_Y) > 8) VAR(VAR_CAMERA_SPEED_Y) = 8; } cameraMoved(); if (camera._cur.x != old.x || camera._cur.y != old.y) { VAR(VAR_CAMERA_POS_X) = camera._cur.x; VAR(VAR_CAMERA_POS_Y) = camera._cur.y; if (VAR(VAR_SCROLL_SCRIPT)) runScript(VAR(VAR_SCROLL_SCRIPT), 0, 0, 0); } } void ScummEngine_v7::panCameraTo(int x, int y) { VAR(VAR_CAMERA_FOLLOWED_ACTOR) = camera._follows = 0; VAR(VAR_CAMERA_DEST_X) = camera._dest.x = x; VAR(VAR_CAMERA_DEST_Y) = camera._dest.y = y; } #endif } // End of namespace Scumm