https://github.com/scummvm/scummvm
Tip revision: 840ea0219937f08ef2470bc355a3cc95b5ac159a authored by Thierry Crozat on 08 December 2017, 22:00:35 UTC
RELEASE: This is 2.0.1pre
RELEASE: This is 2.0.1pre
Tip revision: 840ea02
gfxbase.cpp
/* 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.h"
#include "disk.h"
#include "common/algorithm.h"
#include "common/textconsole.h"
#include "parallaction/parallaction.h"
namespace Parallaction {
GfxObj::GfxObj(uint objType, Frames *frames, const char* name) :
_frames(frames), x(0), y(0), z(0), _prog(0), _flags(0),
type(objType), frame(0), layer(3), scale(100), _hasMask(false), _hasPath(false),
transparentKey(0), _maskId(0), _pathId(0) {
if (name) {
_name = strdup(name);
} else {
_name = 0;
}
}
GfxObj::~GfxObj() {
delete _frames;
free(_name);
}
void GfxObj::release() {
// _keep = false;
delete this;
}
const char *GfxObj::getName() const {
return _name;
}
uint GfxObj::getNum() {
return _frames->getNum();
}
void GfxObj::getRect(uint f, Common::Rect &r) {
_frames->getRect(f, r);
}
byte *GfxObj::getData(uint f) {
return _frames->getData(f);
}
uint GfxObj::getRawSize(uint f) {
return _frames->getRawSize(f);
}
uint GfxObj::getSize(uint f) {
return _frames->getSize(f);
}
void GfxObj::setFlags(uint32 flags) {
_flags |= flags;
}
void GfxObj::clearFlags(uint32 flags) {
_flags &= ~flags;
}
void Gfx::addObjectToScene(GfxObj *obj) {
if (!obj) {
return;
}
if (!obj->isVisible()) {
return;
}
if (SCENE_DRAWLIST_SIZE == _sceneObjects.size()) {
warning("number of objects in the current scene is larger than the fixed drawlist size");
}
_sceneObjects.push_back(obj);
}
void Gfx::resetSceneDrawList() {
_sceneObjects.clear();
_sceneObjects.reserve(SCENE_DRAWLIST_SIZE);
}
GfxObj* Gfx::loadAnim(const char *name) {
debugC(1, kDebugGraphics, "Gfx::loadAnim(\"%s\")", name);
Frames* frames = _disk->loadFrames(name);
assert(frames);
GfxObj *obj = new GfxObj(kGfxObjTypeAnim, frames, name);
assert(obj);
// animation Z is not set here, but controlled by game scripts and user interaction.
// it is always >=0 and <screen height
obj->transparentKey = 0;
return obj;
}
GfxObj* Gfx::loadCharacterAnim(const char *name) {
return loadAnim(name);
}
GfxObj* Gfx::loadGet(const char *name) {
GfxObj *obj = _disk->loadStatic(name);
assert(obj);
obj->z = kGfxObjGetZ; // this preset Z value ensures that get zones are drawn after doors but before animations
obj->type = kGfxObjTypeGet;
obj->transparentKey = 0;
return obj;
}
GfxObj* Gfx::loadDoor(const char *name) {
Frames *frames = _disk->loadFrames(name);
assert(frames);
GfxObj *obj = new GfxObj(kGfxObjTypeDoor, frames, name);
assert(obj);
obj->z = kGfxObjDoorZ; // this preset Z value ensures that doors are drawn first
obj->transparentKey = 0;
return obj;
}
void Gfx::freeLocationObjects() {
freeDialogueObjects();
freeLabels();
}
void Gfx::freeCharacterObjects() {
freeDialogueObjects();
}
void BackgroundInfo::loadGfxObjMask(Parallaction *vm, const char *name, GfxObj *obj) {
debugC(1, kDebugGraphics, "BackgroundInfo::loadGfxObjMask(\"%s\")", name);
Common::Rect rect;
obj->getRect(0, rect);
MaskBuffer *buf = vm->_disk->loadMask(name, rect.width(), rect.height());
obj->_maskId = addMaskPatch(buf);
obj->_hasMask = true;
}
void BackgroundInfo::loadGfxObjPath(Parallaction *vm, const char *name, GfxObj *obj) {
Common::Rect rect;
obj->getRect(0, rect);
PathBuffer *buf = vm->_disk->loadPath(name, rect.width(), rect.height());
obj->_pathId = addPathPatch(buf);
obj->_hasPath = true;
}
void Gfx::showGfxObj(GfxObj* obj, bool visible) {
if (!obj) {
return;
}
debugC(1, kDebugGraphics, "Gfx::showGfxObj(\"%s\", visible:%d)", obj->getName(), visible ? 1 : 0);
if (visible) {
obj->setFlags(kGfxObjVisible);
} else {
obj->clearFlags(kGfxObjVisible);
}
if (obj->_hasMask) {
debugC(1, kDebugGraphics, "\tHas Mask");
_backgroundInfo->toggleMaskPatch(obj->_maskId, obj->x, obj->y, visible);
}
if (obj->_hasPath) {
debugC(1, kDebugGraphics, "\tHas Path");
_backgroundInfo->togglePathPatch(obj->_pathId, obj->x, obj->y, visible);
}
}
bool compareZ(const GfxObj* a1, const GfxObj* a2) {
return (a1->z == a2->z) ? (a1->_prog < a2->_prog) : (a1->z < a2->z);
}
void Gfx::sortScene() {
debugC(3, kDebugGraphics, "Gfx::sortScene()");
GfxObjArray::iterator first = _sceneObjects.begin();
GfxObjArray::iterator last = _sceneObjects.end();
Common::sort(first, last, compareZ);
}
void Gfx::drawGfxObject(GfxObj *obj, Graphics::Surface &surf) {
if (!obj->isVisible()) {
return;
}
Common::Rect rect;
byte *data;
obj->getRect(obj->frame, rect);
int x = obj->x;
int y = obj->y;
if (_overlayMode) {
x += _scrollPosX;
y += _scrollPosY;
}
rect.translate(x, y);
data = obj->getData(obj->frame);
// WORKAROUND: During the end credits, game scripts try to show a
// non-existing frame. We change it to an existing one here.
if (obj->frame == 14 && obj->getNum() == 9 && !strcmp(obj->getName(), "Dinor"))
obj->frame = 8;
if (obj->getSize(obj->frame) == obj->getRawSize(obj->frame)) {
blt(rect, data, &surf, obj->layer, obj->scale, obj->transparentKey);
} else {
unpackBlt(rect, data, obj->getRawSize(obj->frame), &surf, obj->layer, obj->scale, obj->transparentKey);
}
}
void Gfx::drawText(Font *font, Graphics::Surface* surf, uint16 x, uint16 y, const char *text, byte color) {
byte *dst = (byte *)surf->getBasePtr(x, y);
font->setColor(color);
font->drawString(dst, surf->w, text);
}
void Gfx::unpackBlt(const Common::Rect& r, byte *data, uint size, Graphics::Surface *surf, uint16 z, uint scale, byte transparentColor) {
byte *d = _unpackedBitmap;
uint pixelsLeftInLine = r.width();
while (size > 0) {
uint8 p = *data++;
size--;
uint8 color = p & 0xF;
uint8 repeat = (p & 0xF0) >> 4;
if (repeat == 0) {
repeat = *data++;
size--;
}
if (repeat == 0) {
// end of line
repeat = pixelsLeftInLine;
pixelsLeftInLine = r.width();
} else {
pixelsLeftInLine -= repeat;
}
memset(d, color, repeat);
d += repeat;
}
blt(r, _unpackedBitmap, surf, z, scale, transparentColor);
}
void Gfx::bltMaskScale(const Common::Rect& r, byte *data, Graphics::Surface *surf, uint16 z, uint scale, byte transparentColor) {
if (scale == 100) {
// use optimized path
bltMaskNoScale(r, data, surf, z, transparentColor);
return;
}
// unscaled rectangle size
uint width = r.width();
uint height = r.height();
// scaled rectangle size
uint scaledWidth = r.width() * scale / 100;
uint scaledHeight = r.height() * scale / 100;
// scaled rectangle origin
uint scaledLeft = r.left + (width - scaledWidth) / 2;
uint scaledTop = r.top + (height - scaledHeight);
// clipped scaled destination rectangle
Common::Rect dstRect(scaledWidth, scaledHeight);
dstRect.moveTo(scaledLeft, scaledTop);
Common::Rect clipper(surf->w, surf->h);
dstRect.clip(clipper);
if (!dstRect.isValidRect()) return;
// clipped source rectangle
Common::Rect srcRect;
srcRect.left = (dstRect.left - scaledLeft) * 100 / scale;
srcRect.top = (dstRect.top - scaledTop) * 100 / scale;
srcRect.setWidth(dstRect.width() * 100 / scale);
srcRect.setHeight(dstRect.height() * 100 / scale);
if (!srcRect.isValidRect()) return;
Common::Point dp;
dp.x = dstRect.left;
dp.y = dstRect.top;
byte *s = data + srcRect.left + srcRect.top * width;
byte *d = (byte *)surf->getBasePtr(dp.x, dp.y);
uint line = 0, col = 0;
uint xAccum = 0, yAccum = 0;
uint inc = width * (100 - scale);
uint thr = width * 100;
for (uint16 i = 0; i < srcRect.height(); i++) {
yAccum += inc;
if (yAccum >= thr) {
yAccum -= thr;
s += width;
continue;
}
xAccum = 0;
byte *d2 = d;
col = 0;
for (uint16 j = 0; j < srcRect.width(); j++) {
xAccum += inc;
if (xAccum >= thr) {
xAccum -= thr;
s++;
continue;
}
if (*s != transparentColor) {
if (_backgroundInfo->hasMask()) {
byte v = _backgroundInfo->_mask->getValue(dp.x + col, dp.y + line);
if (z >= v) *d2 = *s;
} else {
*d2 = *s;
}
}
s++;
d2++;
col++;
}
s += width - srcRect.width();
d += surf->w;
line++;
}
}
void Gfx::bltMaskNoScale(const Common::Rect& r, byte *data, Graphics::Surface *surf, uint16 z, byte transparentColor) {
if (!_backgroundInfo->hasMask() || (z == LAYER_FOREGROUND)) {
// use optimized path
bltNoMaskNoScale(r, data, surf, transparentColor);
return;
}
Common::Point dp;
Common::Rect q(r);
Common::Rect clipper(surf->w, surf->h);
q.clip(clipper);
if (!q.isValidRect()) return;
dp.x = q.left;
dp.y = q.top;
q.translate(-r.left, -r.top);
byte *s = data + q.left + q.top * r.width();
byte *d = (byte *)surf->getBasePtr(dp.x, dp.y);
uint sPitch = r.width() - q.width();
uint dPitch = surf->w - q.width();
for (uint16 i = 0; i < q.height(); i++) {
for (uint16 j = 0; j < q.width(); j++) {
if (*s != transparentColor) {
if (_backgroundInfo->hasMask()) {
byte v = _backgroundInfo->_mask->getValue(dp.x + j, dp.y + i);
if (z >= v) *d = *s;
} else {
*d = *s;
}
}
s++;
d++;
}
s += sPitch;
d += dPitch;
}
}
void Gfx::bltNoMaskNoScale(const Common::Rect& r, byte *data, Graphics::Surface *surf, byte transparentColor) {
Common::Point dp;
Common::Rect q(r);
Common::Rect clipper(surf->w, surf->h);
q.clip(clipper);
if (!q.isValidRect()) return;
dp.x = q.left;
dp.y = q.top;
q.translate(-r.left, -r.top);
byte *s = data + q.left + q.top * r.width();
byte *d = (byte *)surf->getBasePtr(dp.x, dp.y);
uint sPitch = r.width() - q.width();
uint dPitch = surf->w - q.width();
for (uint16 i = q.top; i < q.bottom; i++) {
for (uint16 j = q.left; j < q.right; j++) {
if (*s != transparentColor)
*d = *s;
s++;
d++;
}
s += sPitch;
d += dPitch;
}
}
void Gfx::blt(const Common::Rect& r, byte *data, Graphics::Surface *surf, uint16 z, uint scale, byte transparentColor) {
bltMaskScale(r, data, surf, z, scale, transparentColor);
}
} // namespace Parallaction