mirror of
https://github.com/libretro/scummvm.git
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139 lines
3.3 KiB
C++
139 lines
3.3 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 "kyra/screen_v3.h"
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#include "kyra/kyra_v3.h"
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namespace Kyra {
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Screen_v3::Screen_v3(KyraEngine_v3 *vm, OSystem *system) : ScreenEx(vm, system) {
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}
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Screen_v3::~Screen_v3() {
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}
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void Screen_v3::setScreenDim(int dim) {
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debugC(9, kDebugLevelScreen, "Screen_v3::setScreenDim(%d)", dim);
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assert(dim < _screenDimTableCount);
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_curDim = &_screenDimTable[dim];
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}
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const ScreenDim *Screen_v3::getScreenDim(int dim) {
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debugC(9, kDebugLevelScreen, "Screen_v3::getScreenDim(%d)", dim);
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assert(dim < _screenDimTableCount);
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return &_screenDimTable[dim];
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}
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int Screen_v3::getLayer(int x, int y) {
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debugC(9, kDebugLevelScreen, "Screen_v3::getLayer(%d, %d)", x, y);
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if (x < 0)
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x = 0;
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else if (x >= 320)
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x = 319;
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if (y < 0)
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y = 0;
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else if (y >= 188)
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y = 187;
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if (y < _maskMinY || y > _maskMaxY)
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return 15;
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uint8 pixel = *(getCPagePtr(5) + y * 320 + x);
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pixel &= 0x7F;
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pixel >>= 3;
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if (pixel < 1)
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pixel = 1;
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else if (pixel > 15)
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pixel = 15;
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return pixel;
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}
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byte Screen_v3::getShapeFlag1(int x, int y) {
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debugC(9, kDebugLevelScreen, "Screen_v3::getShapeFlag1(%d, %d)", x, y);
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if (y < _maskMinY || y > _maskMaxY)
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return 0;
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uint8 color = _shapePages[0][y * SCREEN_W + x];
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color &= 0x80;
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color ^= 0x80;
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if (color & 0x80)
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return 1;
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return 0;
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}
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byte Screen_v3::getShapeFlag2(int x, int y) {
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debugC(9, kDebugLevelScreen, "Screen_v3::getShapeFlag2(%d, %d)", x, y);
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if (y < _maskMinY || y > _maskMaxY)
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return 0;
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uint8 color = _shapePages[0][y * SCREEN_W + x];
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color &= 0x7F;
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color &= 0x87;
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return color;
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}
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int Screen_v3::getDrawLayer(int x, int y) {
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debugC(9, kDebugLevelScreen, "Screen_v3::getDrawLayer(%d, %d)", x, y);
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int xpos = x - 8;
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int ypos = y;
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int layer = 1;
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for (int curX = xpos; curX < xpos + 24; ++curX) {
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int tempLayer = getShapeFlag2(curX, ypos);
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if (layer < tempLayer)
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layer = tempLayer;
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if (layer >= 7)
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return 7;
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}
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return layer;
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}
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int Screen_v3::getDrawLayer2(int x, int y, int height) {
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debugC(9, kDebugLevelScreen, "Screen_v3::getDrawLayer2(%d, %d, %d)", x, y, height);
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int xpos = x - 8;
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int ypos = y;
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int layer = 1;
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for (int useX = xpos; useX < xpos + 24; ++useX) {
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for (int useY = ypos - height; useY < ypos; ++useY) {
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int tempLayer = getShapeFlag2(useX, useY);
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if (tempLayer > layer)
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layer = tempLayer;
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if (tempLayer >= 7)
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return 7;
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}
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}
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return layer;
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}
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} // end of namespace Kyra
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