1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
/* 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 "mohawk/mohawk.h"
#include "mohawk/resource.h"
#include "mohawk/graphics.h"
#include "common/system.h"
#include "engines/util.h"
#include "graphics/palette.h"
namespace Mohawk {
MohawkSurface::MohawkSurface() : _surface(nullptr), _palette(nullptr) {
_offsetX = 0;
_offsetY = 0;
}
MohawkSurface::MohawkSurface(Graphics::Surface *surface, byte *palette, int offsetX, int offsetY) : _palette(palette), _offsetX(offsetX), _offsetY(offsetY) {
assert(surface);
_surface = surface;
}
MohawkSurface::~MohawkSurface() {
free(_palette);
if (_surface) {
_surface->free();
delete _surface;
}
}
void MohawkSurface::convertToTrueColor() {
assert(_surface);
if (_surface->format.bytesPerPixel > 1)
return;
assert(_palette);
Graphics::Surface *surface = _surface->convertTo(g_system->getScreenFormat(), _palette);
// Free everything and set the new surface as the converted surface
_surface->free();
delete _surface;
free(_palette);
_palette = nullptr;
_surface = surface;
}
GraphicsManager::GraphicsManager() {
}
GraphicsManager::~GraphicsManager() {
clearCache();
}
void GraphicsManager::clearCache() {
for (Common::HashMap<uint16, MohawkSurface *>::iterator it = _cache.begin(); it != _cache.end(); it++)
delete it->_value;
for (Common::HashMap<uint16, Common::Array<MohawkSurface *> >::iterator it = _subImageCache.begin(); it != _subImageCache.end(); it++) {
Common::Array<MohawkSurface *> &array = it->_value;
for (uint i = 0; i < array.size(); i++)
delete array[i];
}
_cache.clear();
_subImageCache.clear();
}
MohawkSurface *GraphicsManager::findImage(uint16 id) {
if (!_cache.contains(id))
_cache[id] = decodeImage(id);
// TODO: Probably would be nice to limit the size of the cache
// Currently, this can't get large because it is freed on every
// card/stack change in Myst/Riven so I'm not worried about it.
// Doesn't mean this shouldn't be done in the future.
return _cache[id];
}
Common::Array<MohawkSurface *> GraphicsManager::decodeImages(uint16 id) {
error("decodeImages not implemented for this game");
}
void GraphicsManager::preloadImage(uint16 image) {
findImage(image);
}
void GraphicsManager::setPalette(uint16 id) {
Common::SeekableReadStream *tpalStream = getVM()->getResource(ID_TPAL, id);
uint16 colorStart = tpalStream->readUint16BE();
uint16 colorCount = tpalStream->readUint16BE();
byte *palette = new byte[colorCount * 3];
for (uint16 i = 0; i < colorCount; i++) {
palette[i * 3 + 0] = tpalStream->readByte();
palette[i * 3 + 1] = tpalStream->readByte();
palette[i * 3 + 2] = tpalStream->readByte();
tpalStream->readByte();
}
delete tpalStream;
getVM()->_system->getPaletteManager()->setPalette(palette, colorStart, colorCount);
delete[] palette;
}
void GraphicsManager::copyAnimImageToScreen(uint16 image, int left, int top) {
Graphics::Surface *surface = findImage(image)->getSurface();
Common::Rect srcRect(0, 0, surface->w, surface->h);
Common::Rect dstRect(left, top, left + surface->w, top + surface->h);
copyAnimImageSectionToScreen(image, srcRect, dstRect);
}
void GraphicsManager::copyAnimImageSectionToScreen(uint16 image, Common::Rect srcRect, Common::Rect dstRect) {
copyAnimImageSectionToScreen(findImage(image), srcRect, dstRect);
}
void GraphicsManager::copyAnimSubImageToScreen(uint16 image, uint16 subimage, int left, int top) {
if (!_subImageCache.contains(image))
_subImageCache[image] = decodeImages(image);
Common::Array<MohawkSurface *> &images = _subImageCache[image];
Graphics::Surface *surface = images[subimage]->getSurface();
Common::Rect srcRect(0, 0, surface->w, surface->h);
Common::Rect dstRect(left, top, left + surface->w, top + surface->h);
copyAnimImageSectionToScreen(images[subimage], srcRect, dstRect);
}
void GraphicsManager::getSubImageSize(uint16 image, uint16 subimage, uint16 &width, uint16 &height) {
if (!_subImageCache.contains(image))
_subImageCache[image] = decodeImages(image);
Common::Array<MohawkSurface *> &images = _subImageCache[image];
Graphics::Surface *surface = images[subimage]->getSurface();
width = surface->w;
height = surface->h;
}
void GraphicsManager::copyAnimImageSectionToScreen(MohawkSurface *image, Common::Rect srcRect, Common::Rect dstRect) {
uint16 startX = 0;
uint16 startY = 0;
assert(srcRect.isValidRect() && dstRect.isValidRect());
assert(srcRect.left >= 0 && srcRect.top >= 0);
// TODO: clip rect
if (dstRect.left < 0) {
startX -= dstRect.left;
dstRect.left = 0;
}
if (dstRect.top < 0) {
startY -= dstRect.top;
dstRect.top = 0;
}
if (dstRect.left >= getVM()->_system->getWidth())
return;
if (dstRect.top >= getVM()->_system->getHeight())
return;
Graphics::Surface *surface = image->getSurface();
if (startX >= surface->w)
return;
if (startY >= surface->h)
return;
if (srcRect.left > surface->w)
return;
if (srcRect.top > surface->h)
return;
if (srcRect.right > surface->w)
srcRect.right = surface->w;
if (srcRect.bottom > surface->h)
srcRect.bottom = surface->h;
uint16 width = MIN<int>(srcRect.right - srcRect.left - startX, getVM()->_system->getWidth() - dstRect.left);
uint16 height = MIN<int>(srcRect.bottom - srcRect.top - startY, getVM()->_system->getHeight() - dstRect.top);
byte *surf = (byte *)surface->getBasePtr(0, srcRect.top + startY);
Graphics::Surface *screen = getVM()->_system->lockScreen();
// image and screen should always be 8bpp
for (uint16 y = 0; y < height; y++) {
byte *dest = (byte *)screen->getBasePtr(dstRect.left, dstRect.top + y);
byte *src = surf + srcRect.left + startX;
// blit, with 0 being transparent
for (uint16 x = 0; x < width; x++) {
if (*src)
*dest = *src;
src++;
dest++;
}
surf += surface->pitch;
}
getVM()->_system->unlockScreen();
}
void GraphicsManager::addImageToCache(uint16 id, MohawkSurface *surface) {
if (_cache.contains(id))
error("Image %d already in cache", id);
_cache[id] = surface;
}
} // End of namespace Mohawk
|
