| rev |
line source |
|
paulo@0
|
1 /* Basic data types for LOCKJAW, an implementation of the Soviet Mind Game
|
|
paulo@0
|
2
|
|
paulo@0
|
3 Copyright (C) 2006 Damian Yerrick <tepples+lj@spamcop.net>
|
|
paulo@0
|
4
|
|
paulo@0
|
5 This work is free software; you can redistribute it and/or modify
|
|
paulo@0
|
6 it under the terms of the GNU General Public License as published by
|
|
paulo@0
|
7 the Free Software Foundation; either version 2 of the License, or
|
|
paulo@0
|
8 (at your option) any later version.
|
|
paulo@0
|
9
|
|
paulo@0
|
10 This program is distributed in the hope that it will be useful,
|
|
paulo@0
|
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
paulo@0
|
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
paulo@0
|
13 GNU General Public License for more details.
|
|
paulo@0
|
14
|
|
paulo@0
|
15 You should have received a copy of the GNU General Public License
|
|
paulo@0
|
16 along with this program; if not, write to the Free Software
|
|
paulo@0
|
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
paulo@0
|
18
|
|
paulo@0
|
19 Original game concept and design by Alexey Pajitnov.
|
|
paulo@0
|
20 The Software is not sponsored or endorsed by Alexey Pajitnov, Elorg,
|
|
paulo@0
|
21 or The Tetris Company LLC.
|
|
paulo@0
|
22
|
|
paulo@0
|
23 */
|
|
paulo@0
|
24
|
|
paulo@0
|
25 #ifndef LJTYPES_H
|
|
paulo@0
|
26 #define LJTYPES_H
|
|
paulo@0
|
27
|
|
paulo@0
|
28 /**
|
|
paulo@0
|
29 * A 16.16 signed number. Used commonly for Y piece positions.
|
|
paulo@0
|
30 */
|
|
paulo@0
|
31 typedef signed int LJFixed;
|
|
paulo@0
|
32
|
|
paulo@0
|
33 static inline signed int ljfixfloor(LJFixed f) __attribute__((const));
|
|
paulo@0
|
34
|
|
paulo@0
|
35 static inline signed int ljfixfloor(LJFixed f) {
|
|
paulo@0
|
36 return f >> 16;
|
|
paulo@0
|
37 }
|
|
paulo@0
|
38
|
|
paulo@0
|
39 static inline LJFixed ljitofix(signed int f) __attribute__((const));
|
|
paulo@0
|
40
|
|
paulo@0
|
41 static inline LJFixed ljitofix(signed int f) {
|
|
paulo@0
|
42 return f << 16;
|
|
paulo@0
|
43 }
|
|
paulo@0
|
44
|
|
paulo@0
|
45 /*
|
|
paulo@0
|
46 * In most cases, macros are deprecated in favor of static inline functions
|
|
paulo@0
|
47 * because the latter allow the compiler to perform more type checks.
|
|
paulo@0
|
48 * However, the C language forbids calling a function in an inline
|
|
paulo@0
|
49 * constructor, even if it is a static inline function with no side effects.
|
|
paulo@0
|
50 * For example, GCC gives the misleading error message
|
|
paulo@0
|
51 * "error: initializer element is not constant".
|
|
paulo@0
|
52 * Therefore, I have to provide a second implementation of ljitofix()
|
|
paulo@0
|
53 * as a macro for use in global variable initializers.
|
|
paulo@0
|
54 */
|
|
paulo@0
|
55 #define LJITOFIX(f) ((LJFixed)((f) << 16))
|
|
paulo@0
|
56
|
|
paulo@0
|
57
|
|
paulo@0
|
58 typedef unsigned int LJBits;
|
|
paulo@0
|
59
|
|
paulo@0
|
60 #endif
|
|
paulo@0
|
61
|
