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
|
/* 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.
*
*/
/*
* This code is based on the original source code of Lord Avalot d'Argent version 1.3.
* Copyright (c) 1994-1995 Mike, Mark and Thomas Thurman.
*/
/* Replacement class for the Graph unit from Pascal. */
#include "avalanche/avalanche.h"
#include "avalanche/graphics.h"
#include "common/system.h"
#include "engines/util.h"
#include "graphics/palette.h"
#include "common/rect.h"
namespace Avalanche {
const byte Graphics::_egaPaletteIndex[16] = {0, 1, 2, 3, 4, 5, 20, 7, 56, 57, 58, 59, 60, 61, 62, 63};
Graphics::Graphics(AvalancheEngine *vm) {
_vm = vm;
}
void Graphics::init() {
initGraphics(kScreenWidth, kScreenHeight * 2, true); // Doubling the height.
for (int i = 0; i < 64; ++i) {
_egaPalette[i][0] = (i >> 2 & 1) * 0xaa + (i >> 5 & 1) * 0x55;
_egaPalette[i][1] = (i >> 1 & 1) * 0xaa + (i >> 4 & 1) * 0x55;
_egaPalette[i][2] = (i & 1) * 0xaa + (i >> 3 & 1) * 0x55;
}
for (byte i = 0; i < 16; i++)
g_system->getPaletteManager()->setPalette(_egaPalette[_egaPaletteIndex[i]], i, 1);
_surface.create(kScreenWidth, kScreenHeight, ::Graphics::PixelFormat::createFormatCLUT8());
}
Graphics::~Graphics() {
_surface.free();
}
void Graphics::flesh_colours()
{
g_system->getPaletteManager()->setPalette(_egaPalette[39], 13, 1);
g_system->getPaletteManager()->setPalette(_egaPalette[28], 5, 1);
}
byte *Graphics::getPixel(int16 x, int16 y) {
return (byte *)_surface.getBasePtr(x, y);
}
void Graphics::drawFrame(int16 x1, int16 y1, int16 x2, int16 y2, int16 color) {
_surface.frameRect(Common::Rect(x1, y1, x2, y2), color);
}
void Graphics::drawBar(int16 x1, int16 y1, int16 x2, int16 y2, int16 color) {
_surface.fillRect(Common::Rect(x1, y1, x2, y2), color);
}
void Graphics::drawSprite(const SpriteInfo &sprite, byte picnum, int16 x, int16 y) {
/* First we make the pixels of the spirte blank. */
for (byte qay = 0; qay < sprite.yl; qay++) {
byte *mask = new byte[sprite.xl];
for (byte qax = 0; qax < sprite.xl; qax++) {
byte count = qax / 8;
mask[qax] = ((*sprite.sil[picnum])[qay][count] >> ((7 - qax % 8)) & 1);
if (mask[qax] == 0)
*getPixel(x + qax, y + qay) = 0;
}
delete[] mask;
}
/* Then we draw the picture to the blank places. */
uint16 i = 0; // Because the original siltype starts at 5!!! See Graphics.h for definition.
for (byte qay = 0; qay < sprite.yl; qay++)
for (int8 plane = 3; plane >= 0; plane--) // The planes are in the opposite way.
for (uint16 qax = 0; qax < sprite.xl; qax += 8) {
byte pixel = (*sprite.mani[picnum])[i++];
for (byte bit = 0; bit < 8; bit++) {
byte pixelBit = (pixel >> bit) & 1;
*getPixel(x + qax + 7 - bit, y + qay) += (pixelBit << plane);
}
}
}
::Graphics::Surface Graphics::loadPictureGraphic(Common::File &file) {
// This function mimics Pascal's getimage().
// The height and the width are stored in 2-2 bytes. We have to add 1 to each because Pascal stores the value of them -1.
uint16 pictureWidth = file.readUint16LE() + 1;
uint16 pictureHeight = file.readUint16LE() + 1;
::Graphics::Surface picture; // We make a Surface object for the picture itself.
picture.create(pictureWidth, pictureHeight, ::Graphics::PixelFormat::createFormatCLUT8());
// Produce the picture. We read it in row-by-row, and every row has 4 planes.
for (byte y = 0; y < pictureHeight; y++)
for (int8 plane = 3; plane >= 0; plane--) // The planes are in the opposite way.
for (uint16 x = 0; x < pictureWidth; x += 8) {
byte pixel = file.readByte();
for (byte bit = 0; bit < 8; bit++) {
byte pixelBit = (pixel >> bit) & 1;
*(byte *)picture.getBasePtr(x + 7 - bit, y) += (pixelBit << plane);
}
}
return picture;
}
::Graphics::Surface Graphics::loadPictureRow(Common::File &file, uint16 width, uint16 height) {
// This function is our own creation, very much like the one above. The main differences are that
// we don't read the width and the height from the file, the planes are in a different order
// and we read the picture plane-by-plane.
::Graphics::Surface picture;
picture.create(width, height, ::Graphics::PixelFormat::createFormatCLUT8());
for (byte plane = 0; plane < 4; plane++)
for (uint16 y = 0; y < height; y++)
for (uint16 x = 0; x < width; x += 8) {
byte pixel = file.readByte();
for (byte i = 0; i < 8; i++) {
byte pixelBit = (pixel >> i) & 1;
*(byte *)picture.getBasePtr(x + 7 - i, y) += (pixelBit << plane);
}
}
return picture;
}
void Graphics::drawPicture(const ::Graphics::Surface &picture, uint16 destX, uint16 destY) {
// Copy the picture to the given place on the screen.
for (uint16 y = 0; y < picture.h; y++)
for (uint16 x = 0; x < picture.w; x++)
*getPixel(x + destX, y + destY) = *(byte *)picture.getBasePtr(x, y);
}
void Graphics::refreshScreen() {
// These cycles are for doubling the screen height.
::Graphics::Surface picture;
picture.create(kScreenWidth, kScreenHeight * 2, ::Graphics::PixelFormat::createFormatCLUT8());
for (uint16 y = 0; y < picture.h / 2; y++)
for (uint16 x = 0; x < picture.w; x++)
for (byte j = 0; j < 2; j++)
*(byte *)picture.getBasePtr(x, y * 2 + j) = *(byte *)_surface.getBasePtr(x, y);
// Now we copy the stretched picture to the screen.
g_system->copyRectToScreen(picture.pixels, picture.pitch, 0, 0, kScreenWidth, kScreenHeight * 2);
g_system->updateScreen();
picture.free();
}
} // End of namespace Avalanche
|
