1 /* ScummVM - Graphic Adventure Engine
2  *
3  * ScummVM is the legal property of its developers, whose names
4  * are too numerous to list here. Please refer to the COPYRIGHT
5  * file distributed with this source distribution.
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License
9  * as published by the Free Software Foundation; either version 2
10  * of the License, or (at your option) any later version.
11 
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16 
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20  *
21  */
22 
23 #include "common/stream.h"
24 #include "common/memstream.h"
25 
26 #include "startrek/font.h"
27 
28 namespace StarTrek {
29 
30 static const byte CHARACTER_COUNT = 0x80;
31 static const byte CHARACTER_SIZE = 0x40;
32 
Font(StarTrekEngine * vm)33 Font::Font(StarTrekEngine *vm) : _vm(vm) {
34 	Common::MemoryReadStreamEndian *fontStream = _vm->loadFile("FONT.FNT");
35 
36 	_characters = new Character[CHARACTER_COUNT];
37 
38 	for (byte i = 0; i < CHARACTER_COUNT; i++)
39 		fontStream->read(_characters[i].data, CHARACTER_SIZE);
40 
41 	delete fontStream;
42 }
43 
~Font()44 Font::~Font() {
45 	delete[] _characters;
46 }
47 
getCharData(int i)48 byte *Font::getCharData(int i) {
49 	return _characters[i].data;
50 }
51 
isDisplayableCharacter(char c)52 bool Font::isDisplayableCharacter(char c) {
53 	// True if lowercase, uppercase, a digit, punctuation, or space
54 	return _fontProperties[c & 0xff] & 0x57;
55 }
56 
57 
58 // Bit 0 set for lowercase characters;
59 // Bit 1 set for uppercase characters;
60 // Bit 2 set for digits;
61 // Bit 3 set for certain control characters (nl, tab, cr?);
62 // Bit 4 set for punctuation, also &, @, etc;
63 // Bit 5 set for "undrawable" characters (?);
64 // Bit 6 set for space only (?);
65 // Bit 7 set for hexadecimal characters.
66 // NOTE: May need to update this for French, German languages?
67 const byte Font::_fontProperties[] = {
68 	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x28, 0x28, 0x28, 0x28, 0x28, 0x20, 0x20,
69 	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
70 	0x48, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
71 	0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
72 	0x10, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
73 	0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x10, 0x10, 0x10, 0x10, 0x10,
74 	0x10, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
75 	0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x10, 0x10, 0x10, 0x10, 0x20,
76 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
77 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
78 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
79 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
80 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
81 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
82 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
83 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
84 };
85 
86 } // End of namespace StarTrek
87