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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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "common/std/utility.h"
#include "ags/engine/ac/dynamic_sprite.h"
#include "ags/engine/ac/screen_overlay.h"
#include "ags/shared/ac/sprite_cache.h"
#include "ags/shared/ac/game_setup_struct.h"
#include "ags/shared/util/stream.h"
#include "ags/globals.h"
namespace AGS3 {
using namespace AGS::Shared;
ScreenOverlay::ScreenOverlay(ScreenOverlay &&over) {
*this = std::move(over);
}
ScreenOverlay::~ScreenOverlay() {
if (_sprnum > 0 && !IsSpriteShared())
free_dynamic_sprite(_sprnum, false);
}
// TODO: this may be avoided if we somehow make (dynamic) sprites reference counted when assigning ID too
ScreenOverlay &ScreenOverlay::operator=(ScreenOverlay &&over) {
*this = over;
over._sprnum = 0;
return *this;
}
void ScreenOverlay::ResetImage() {
if (_sprnum > 0 && !IsSpriteShared())
free_dynamic_sprite(_sprnum, false);
_sprnum = 0;
_flags &= ~(kOver_SpriteShared | kOver_AlphaChannel);
scaleWidth = scaleHeight = offsetX = offsetY = 0;
}
Bitmap *ScreenOverlay::GetImage() const {
return _GP(spriteset)[_sprnum];
}
Size ScreenOverlay::GetGraphicSize() const {
return Size(_GP(game).SpriteInfos[_sprnum].Width, _GP(game).SpriteInfos[_sprnum].Height);
}
void ScreenOverlay::SetImage(std::unique_ptr<Shared::Bitmap> pic, bool has_alpha, int offx, int offy) {
ResetImage();
if (pic) {
_flags |= kOver_AlphaChannel * has_alpha;
offsetX = offx;
offsetY = offy;
scaleWidth = pic->GetWidth();
scaleHeight = pic->GetHeight();
_sprnum = add_dynamic_sprite(std::move(pic), has_alpha);
}
MarkChanged();
}
void ScreenOverlay::SetSpriteNum(int sprnum, int offx, int offy) {
ResetImage();
assert(sprnum >= 0 && sprnum < (int)_GP(game).SpriteInfos.size());
if (sprnum < 0 || sprnum >= (int)_GP(game).SpriteInfos.size())
return;
_flags |= kOver_SpriteShared | kOver_AlphaChannel * ((_GP(game).SpriteInfos[sprnum].Flags & SPF_ALPHACHANNEL) != 0);
_sprnum = sprnum;
offsetX = offx;
offsetY = offy;
scaleWidth = _GP(game).SpriteInfos[sprnum].Width;
scaleHeight = _GP(game).SpriteInfos[sprnum].Height;
MarkChanged();
}
void ScreenOverlay::ReadFromSavegame(Stream *in, bool &has_bitmap, int32_t cmp_ver) {
ResetImage();
in->ReadInt32(); // ddb 32-bit pointer value (nasty legacy format)
int pic = in->ReadInt32();
type = in->ReadInt32();
x = in->ReadInt32();
y = in->ReadInt32();
timeout = in->ReadInt32();
bgSpeechForChar = in->ReadInt32();
associatedOverlayHandle = in->ReadInt32();
if (cmp_ver >= kOverSvgVersion_36025) {
_flags = in->ReadInt16();
} else {
if (in->ReadBool()) // has alpha
_flags |= kOver_AlphaChannel;
if (!(in->ReadBool())) // screen relative position
_flags |= kOver_PositionAtRoomXY;
}
if (cmp_ver < 0) {
in->ReadInt16(); // alignment padding to int32 (finalize struct)
}
if (cmp_ver >= kOverSvgVersion_35028) {
offsetX = in->ReadInt32();
offsetY = in->ReadInt32();
}
if (cmp_ver >= kOverSvgVersion_36008) {
zorder = in->ReadInt32();
transparency = in->ReadInt32();
scaleWidth = in->ReadInt32();
scaleHeight = in->ReadInt32();
}
// New saves always save overlay images as a part of the dynamicsprite set;
// old saves could contain images saved along with overlays
if ((cmp_ver >= kOverSvgVersion_36108) || (_flags & kOver_SpriteShared)) {
_sprnum = pic;
has_bitmap = false;
} else {
_sprnum = 0;
has_bitmap = pic != 0;
}
}
void ScreenOverlay::WriteToSavegame(Stream *out) const {
out->WriteInt32(0); // ddb 32-bit pointer value (nasty legacy format)
out->WriteInt32(_sprnum); // sprite id
out->WriteInt32(type);
out->WriteInt32(x);
out->WriteInt32(y);
out->WriteInt32(timeout);
out->WriteInt32(bgSpeechForChar);
out->WriteInt32(associatedOverlayHandle);
out->WriteInt16(_flags);
// since cmp_ver = 1
out->WriteInt32(offsetX);
out->WriteInt32(offsetY);
// since cmp_ver = 2
out->WriteInt32(zorder);
out->WriteInt32(transparency);
out->WriteInt32(scaleWidth);
out->WriteInt32(scaleHeight);
}
} // namespace AGS3
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