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/* 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 "graphics/primitives.h"
#include "sci/engine/seg_manager.h"
#include "sci/graphics/paint32.h"
#include "sci/graphics/text32.h"
namespace Sci {
GfxPaint32::GfxPaint32(SegManager *segMan) :
_segMan(segMan) {}
reg_t GfxPaint32::kernelAddLine(const reg_t planeObject, const Common::Point &startPoint, const Common::Point &endPoint, const int16 priority, const uint8 color, const LineStyle style, const uint16 pattern, const uint8 thickness) {
Plane *plane = g_sci->_gfxFrameout->getPlanes().findByObject(planeObject);
if (plane == nullptr) {
error("kAddLine: Plane %04x:%04x not found", PRINT_REG(planeObject));
}
Common::Rect gameRect;
reg_t bitmapId = makeLineBitmap(startPoint, endPoint, priority, color, style, pattern, thickness, gameRect);
CelInfo32 celInfo;
celInfo.type = kCelTypeMem;
celInfo.bitmap = bitmapId;
// SSCI stores the line color on `celInfo`, even though this is not a
// `kCelTypeColor`, as a hack so that `kUpdateLine` can get the originally
// used color
celInfo.color = color;
ScreenItem *screenItem = new ScreenItem(planeObject, celInfo, gameRect);
screenItem->_priority = priority;
screenItem->_fixedPriority = true;
plane->_screenItemList.add(screenItem);
return screenItem->_object;
}
void GfxPaint32::kernelUpdateLine(ScreenItem *screenItem, Plane *plane, const Common::Point &startPoint, const Common::Point &endPoint, const int16 priority, const uint8 color, const LineStyle style, const uint16 pattern, const uint8 thickness) {
Common::Rect gameRect;
reg_t bitmapId = makeLineBitmap(startPoint, endPoint, priority, color, style, pattern, thickness, gameRect);
_segMan->freeBitmap(screenItem->_celInfo.bitmap);
screenItem->_celInfo.bitmap = bitmapId;
screenItem->_celInfo.color = color;
screenItem->_position = startPoint;
screenItem->_priority = priority;
screenItem->update();
}
void GfxPaint32::kernelDeleteLine(const reg_t screenItemObject, const reg_t planeObject) {
Plane *plane = g_sci->_gfxFrameout->getPlanes().findByObject(planeObject);
if (plane == nullptr) {
return;
}
ScreenItem *screenItem = plane->_screenItemList.findByObject(screenItemObject);
if (screenItem == nullptr) {
return;
}
_segMan->freeBitmap(screenItem->_celInfo.bitmap);
g_sci->_gfxFrameout->deleteScreenItem(*screenItem, *plane);
}
void GfxPaint32::plotter(int x, int y, int color, void *data) {
LineProperties &properties = *static_cast<LineProperties *>(data);
byte *pixels = properties.bitmap->getPixels();
const uint16 bitmapWidth = properties.bitmap->getWidth();
const uint16 bitmapHeight = properties.bitmap->getHeight();
const uint32 index = bitmapWidth * y + x;
// Only draw the points in the bitmap, and ignore the rest. SSCI scripts
// can draw lines ending outside the visible area (e.g. negative
// coordinates)
if (x >= 0 && x < bitmapWidth && y >= 0 && y < bitmapHeight) {
if (properties.solid) {
pixels[index] = (uint8)color;
return;
}
if (properties.horizontal && x != properties.lastAddress) {
properties.lastAddress = x;
++properties.patternIndex;
} else if (!properties.horizontal && y != properties.lastAddress) {
properties.lastAddress = y;
++properties.patternIndex;
}
if (properties.pattern[properties.patternIndex]) {
pixels[index] = (uint8)color;
}
if (properties.patternIndex == ARRAYSIZE(properties.pattern)) {
properties.patternIndex = 0;
}
}
}
reg_t GfxPaint32::makeLineBitmap(const Common::Point &startPoint, const Common::Point &endPoint, const int16 priority, const uint8 color, const LineStyle style, uint16 pattern, uint8 thickness, Common::Rect &outRect) {
const uint8 skipColor = color != kDefaultSkipColor ? kDefaultSkipColor : 0;
// Line thickness is expected to be 2n + 1
thickness = (MAX<uint8>(1, thickness) - 1) | 1;
const uint8 halfThickness = thickness >> 1;
const uint16 scriptWidth = g_sci->_gfxFrameout->getCurrentBuffer().scriptWidth;
const uint16 scriptHeight = g_sci->_gfxFrameout->getCurrentBuffer().scriptHeight;
outRect.left = MIN<int16>(startPoint.x, endPoint.x);
outRect.top = MIN<int16>(startPoint.y, endPoint.y);
outRect.right = MAX<int16>(startPoint.x, endPoint.x) + 1;
outRect.bottom = MAX<int16>(startPoint.y, endPoint.y) + 1;
outRect.grow(halfThickness);
outRect.clip(Common::Rect(scriptWidth, scriptHeight));
reg_t bitmapId;
SciBitmap &bitmap = *_segMan->allocateBitmap(&bitmapId, outRect.width(), outRect.height(), skipColor, 0, 0, scriptWidth, scriptHeight, 0, false, true);
byte *pixels = bitmap.getPixels();
memset(pixels, skipColor, bitmap.getWidth() * bitmap.getHeight());
LineProperties properties;
properties.bitmap = &bitmap;
switch (style) {
case kLineStyleSolid:
pattern = 0xFFFF;
properties.solid = true;
break;
case kLineStyleDashed:
pattern = 0xFF00;
properties.solid = false;
break;
case kLineStylePattern:
properties.solid = pattern == 0xFFFF;
break;
}
// Change coordinates to be relative to the bitmap
const int16 x1 = startPoint.x - outRect.left;
const int16 y1 = startPoint.y - outRect.top;
const int16 x2 = endPoint.x - outRect.left;
const int16 y2 = endPoint.y - outRect.top;
if (!properties.solid) {
for (int i = 0; i < ARRAYSIZE(properties.pattern); ++i) {
properties.pattern[i] = (pattern & 0x8000);
pattern <<= 1;
}
properties.patternIndex = 0;
properties.horizontal = ABS(x2 - x1) > ABS(y2 - y1);
properties.lastAddress = properties.horizontal ? x1 : y1;
}
if (thickness <= 1) {
Graphics::drawLine(x1, y1, x2, y2, color, plotter, &properties);
} else {
Graphics::drawThickLine2(x1, y1, x2, y2, thickness, color, plotter, &properties);
}
return bitmapId;
}
} // End of namespace Sci
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