mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-13 04:28:37 +00:00
415 lines
8.2 KiB
C++
415 lines
8.2 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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* $URL$
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* $Id$
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*
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*/
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#include "agos/agos.h"
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#include "agos/intern.h"
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namespace AGOS {
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void AGOSEngine_Feeble::setupVideoOpcodes(VgaOpcodeProc *op) {
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AGOSEngine_Simon2::setupVideoOpcodes(op);
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op[75] = &AGOSEngine::vc75_setScale;
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op[76] = &AGOSEngine::vc76_setScaleXOffs;
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op[77] = &AGOSEngine::vc77_setScaleYOffs;
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op[78] = &AGOSEngine::vc78_computeXY;
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op[79] = &AGOSEngine::vc79_computePosNum;
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op[80] = &AGOSEngine::vc80_setOverlayImage;
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op[81] = &AGOSEngine::vc81_setRandom;
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op[82] = &AGOSEngine::vc82_getPathValue;
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op[83] = &AGOSEngine::vc83_playSoundLoop;
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op[84] = &AGOSEngine::vc84_stopSoundLoop;
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}
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int AGOSEngine::getScale(int16 y, int16 x) {
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int16 z;
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if (y > _baseY) {
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return((int16)(x * (1 + ((y - _baseY) * _scale))));
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} else {
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if (x == 0)
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return(0);
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if (x < 0) {
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z = ((int16)((x * (1 - ((_baseY - y)* _scale))) - 0.5));
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if (z >- 2)
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return(-2);
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return(z);
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}
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z = ((int16)((x * (1 - ((_baseY - y) * _scale))) + 0.5));
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if (z < 2)
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return(2);
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return(z);
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}
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}
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void AGOSEngine::vc75_setScale() {
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_baseY = vcReadNextWord();
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_scale = (float)vcReadNextWord() / 1000000.;
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}
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void AGOSEngine::vc76_setScaleXOffs() {
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if (getGameType() == GType_PP && getBitFlag(120)) {
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VgaSprite *vsp1, *vsp2;
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uint16 old_file_1, tmp1, tmp2;
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old_file_1 = _vgaCurSpriteId;
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_vgaCurSpriteId = vcReadVar(vcReadNextWord());
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vsp1 = findCurSprite();
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_vgaCurSpriteId = vcReadVar(vcReadNextWord());
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vsp2 = findCurSprite();
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tmp1 = vsp1->x;
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tmp2 = vsp2->x;
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vsp1->x = tmp2;
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vsp2->x = tmp1;
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tmp1 = vsp1->y;
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tmp2 = vsp2->y;
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vsp1->y = tmp2;
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vsp2->y = tmp1;
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_vgaCurSpriteId = old_file_1;
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_vcPtr += 2;
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} else {
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VgaSprite *vsp = findCurSprite();
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vsp->image = vcReadNextWord();
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int16 x = vcReadNextWord();
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uint16 var = vcReadNextWord();
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vsp->x += getScale(vsp->y, x);
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_variableArrayPtr[var] = vsp->x;
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checkScrollX(x, vsp->x);
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vsp->flags = kDFScaled;
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}
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}
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void AGOSEngine::vc77_setScaleYOffs() {
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VgaSprite *vsp = findCurSprite();
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vsp->image = vcReadNextWord();
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int16 y = vcReadNextWord();
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uint16 var = vcReadNextWord();
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vsp->y += getScale(vsp->y, y);
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_variableArrayPtr[var] = vsp->y;
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if (y != 0)
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checkScrollY(y, vsp->y);
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vsp->flags = kDFScaled;
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}
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void AGOSEngine::vc78_computeXY() {
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VgaSprite *vsp = findCurSprite();
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uint16 a = (uint16)_variableArrayPtr[12];
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uint16 b = (uint16)_variableArrayPtr[13];
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const uint16 *p = _pathFindArray[a - 1];
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p += b * 2;
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uint16 posx = readUint16Wrapper(p);
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_variableArrayPtr[15] = posx;
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vsp->x = posx;
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uint16 posy = readUint16Wrapper(p + 1);
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_variableArrayPtr[16] = posy;
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vsp->y = posy;
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if (getGameType() == GType_FF) {
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setBitFlag(85, false);
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if (getBitFlag(74)) {
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centreScroll();
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}
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}
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}
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void AGOSEngine::vc79_computePosNum() {
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uint a = (uint16)_variableArrayPtr[12];
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const uint16 *p = _pathFindArray[a - 1];
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uint pos = 0;
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int16 y = _variableArrayPtr[16];
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while (y >= (int16)readUint16Wrapper(p + 1)) {
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p += 2;
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pos++;
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}
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_variableArrayPtr[13] = pos;
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}
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void AGOSEngine::vc80_setOverlayImage() {
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VgaSprite *vsp = findCurSprite();
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vsp->image = vcReadVarOrWord();
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vsp->x += vcReadNextWord();
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vsp->y += vcReadNextWord();
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vsp->flags = kDFOverlayed;
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_vgaSpriteChanged++;
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}
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void AGOSEngine::vc81_setRandom() {
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uint16 var = vcReadNextWord();
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uint16 value = vcReadNextWord();
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_variableArray[var] = _rnd.getRandomNumber(value - 1);
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}
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void AGOSEngine::vc82_getPathValue() {
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uint8 val;
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uint16 var = vcReadNextWord();
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if (getGameType() == GType_FF && getBitFlag(82)) {
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val = _pathValues1[_GPVCount1++];
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} else {
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val = _pathValues[_GPVCount++];
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}
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vcWriteVar(var, val);
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}
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void AGOSEngine::vc83_playSoundLoop() {
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uint16 sound = vcReadNextWord();
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int16 vol = vcReadNextWord();
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int16 pan = vcReadNextWord();
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loadSound(sound, pan, vol, 3);
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}
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void AGOSEngine::vc84_stopSoundLoop() {
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_sound->stopSfx5();
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}
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// Scrolling functions for Feeble Files
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void AGOSEngine::checkScrollX(int16 x, int16 xpos) {
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if (_scrollXMax == 0 || x == 0)
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return;
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if (getGameType() == GType_FF && (getBitFlag(80) || getBitFlag(82)))
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return;
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int16 tmp;
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if (x > 0) {
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if (_scrollCount != 0) {
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if (_scrollCount >= 0)
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return;
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_scrollCount = 0;
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} else {
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if (_scrollFlag != 0)
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return;
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}
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if (xpos - _scrollX >= 480) {
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_scrollCount = 320;
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tmp = _scrollXMax - _scrollX;
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if (tmp < 320)
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_scrollCount = tmp;
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}
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} else {
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if (_scrollCount != 0) {
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if (_scrollCount < 0)
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return;
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_scrollCount = 0;
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} else {
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if (_scrollFlag != 0)
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return;
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}
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if (xpos - _scrollX < 161) {
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_scrollCount = -320;
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if (_scrollX < 320)
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_scrollCount = -_scrollX;
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}
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}
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}
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void AGOSEngine::checkScrollY(int16 y, int16 ypos) {
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if (_scrollYMax == 0)
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return;
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if (getGameType() == GType_FF && getBitFlag(80))
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return;
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int16 tmp;
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if (y >= 0) {
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if (_scrollCount != 0) {
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if (_scrollCount >= 0)
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return;
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} else {
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if (_scrollFlag != 0)
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return;
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}
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if (ypos - _scrollY >= 440) {
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_scrollCount = 240;
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tmp = _scrollYMax - _scrollY;
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if (tmp < 240)
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_scrollCount = tmp;
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}
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} else {
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if (_scrollCount != 0) {
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if (_scrollCount < 0)
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return;
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} else {
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if (_scrollFlag != 0)
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return;
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}
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if (ypos - _scrollY < 100) {
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_scrollCount = -240;
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if (_scrollY < 240)
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_scrollCount = -_scrollY;
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}
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}
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}
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void AGOSEngine::centreScroll() {
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int16 x, y, tmp;
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if (_scrollXMax != 0) {
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_scrollCount = 0;
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x = _variableArray[15] - _scrollX;
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if (x < 17 || (getBitFlag(85) && x < 320)) {
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x -= 320;
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if (_scrollX < -x)
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x = -_scrollX;
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_scrollCount = x;
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} else if ((getBitFlag(85) && x >= 320) || x >= 624) {
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x -= 320;
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tmp = _scrollXMax - _scrollX;
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if (tmp < x)
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x = tmp;
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_scrollCount = x;
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}
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} else if (_scrollYMax != 0) {
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_scrollCount = 0;
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y = _variableArray[16] - _scrollY;
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if (y < 30) {
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y -= 240;
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if (_scrollY < -y)
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y = -_scrollY;
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_scrollCount = y;
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} else if (y >= 460) {
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y -= 240;
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tmp = _scrollYMax - _scrollY;
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if (tmp < y)
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y = tmp;
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_scrollCount = y;
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}
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}
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}
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void AGOSEngine::startOverlayAnims() {
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VgaSprite *vsp = _vgaSprites;
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uint16 zoneNum;
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int i;
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zoneNum = _variableArray[999];
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for (i = 0; i < 600; i++) {
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if (_variableArray[1000 + i] < 100)
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continue;
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while (vsp->id)
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vsp++;
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vsp->windowNum = 4;
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vsp->priority = 4;
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vsp->flags = 0;
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vsp->palette = 0;
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vsp->image = _variableArray[1000 + i];
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if (i >= 300) {
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vsp->y = ((i - 300) / 20) * 32;
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vsp->x = ((i - 300) % 20) * 32;
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} else {
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vsp->y = (i / 20) * 32;
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vsp->x = (i % 20) * 32;
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}
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vsp->id = 1000 + i;
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vsp->zoneNum = zoneNum;
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}
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}
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void AGOSEngine::startAnOverlayAnim() {
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VgaSprite *vsp = _vgaSprites;
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const byte *vcPtrOrg;
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uint16 a, sprite, file, tmp, zoneNum;
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int16 x;
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zoneNum = _variableArray[999];
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_vcPtr += 4;
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a = vcReadNextWord();
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_vcPtr += 6;
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while (vsp->id)
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vsp++;
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vsp->windowNum = 4;
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vsp->priority = 20;
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vsp->flags = 0;
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vsp->palette = 0;
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vsp->image = vcReadVar(vcReadVar(a));
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x = vcReadVar(a) - 1300;
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if (x < 0) {
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x += 300;
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vsp->priority = 10;
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}
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vsp->y = x / 20 * 32;
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vsp->x = x % 20 * 32;
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vsp->id = vcReadVar(a);
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vsp->zoneNum = zoneNum;
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sprite = _vgaCurSpriteId;
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file = _vgaCurZoneNum;
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_vgaCurZoneNum = vsp->zoneNum;
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_vgaCurSpriteId = vsp->id;
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tmp = to16Wrapper(vsp->priority);
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vcPtrOrg = _vcPtr;
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_vcPtr = (byte *)&tmp;
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vc23_setPriority();
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_vcPtr = vcPtrOrg;
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_vgaCurSpriteId = sprite;
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_vgaCurZoneNum = file;
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}
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} // End of namespace AGOS
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