1 /*
2 Copyright (C) 2001-2006, William Joseph.
3 All Rights Reserved.
4
5 This file is part of GtkRadiant.
6
7 GtkRadiant is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 GtkRadiant 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 GtkRadiant; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "wal32.h"
23
24 #include "ifilesystem.h"
25
26 #include "bytestreamutils.h"
27 #include "imagelib.h"
28
29 typedef unsigned char byte;
30
31 const int M32_NAME_LENGTH = 128;
32 const int M32_MIPMAP_COUNT = 16;
33
34 typedef struct m32_header_t
35 {
36 int version;
37 char name[M32_NAME_LENGTH];
38 char altname[M32_NAME_LENGTH]; // texture substitution
39 char animname[M32_NAME_LENGTH]; // next frame in animation chain
40 char damagename[M32_NAME_LENGTH]; // image that should be shown when damaged
41 unsigned width[M32_MIPMAP_COUNT], height[M32_MIPMAP_COUNT];
42 unsigned offsets[M32_MIPMAP_COUNT];
43 int flags;
44 int contents;
45 int value;
46 float scale_x, scale_y;
47 int mip_scale;
48
49 // detail texturing info
50 char dt_name[M32_NAME_LENGTH]; // detailed texture name
51 float dt_scale_x, dt_scale_y;
52 float dt_u, dt_v;
53 float dt_alpha;
54 int dt_src_blend_mode, dt_dst_blend_mode;
55
56 int unused[20]; // future expansion to maintain compatibility with h2
57 } m32_header_t;
58
59
LoadM32Buff(byte * buffer)60 Image* LoadM32Buff(byte* buffer)
61 {
62 PointerInputStream inputStream(buffer);
63
64 inputStream.seek(4 // version
65 + M32_NAME_LENGTH // name
66 + M32_NAME_LENGTH // altname
67 + M32_NAME_LENGTH // animname
68 + M32_NAME_LENGTH); // damagename
69 int w = istream_read_uint32_le(inputStream);
70 inputStream.seek(4 * (M32_MIPMAP_COUNT - 1)); // remaining widths
71 int h = istream_read_uint32_le(inputStream);
72 inputStream.seek(4 * (M32_MIPMAP_COUNT - 1)); // remaining heights
73 int offset = istream_read_uint32_le(inputStream);
74 inputStream.seek(4 * (M32_MIPMAP_COUNT - 1)); // remaining offsets
75 int flags = istream_read_uint32_le(inputStream);
76 int contents = istream_read_uint32_le(inputStream);
77 int value = istream_read_uint32_le(inputStream);
78
79 RGBAImageFlags* image = new RGBAImageFlags(w, h, flags, contents, value);
80
81 const byte* source = buffer + offset;
82 std::copy(source, source + (w * h * 4), image->getRGBAPixels());
83
84 return image;
85 }
86
LoadM32(ArchiveFile & file)87 Image* LoadM32(ArchiveFile& file)
88 {
89 ScopedArchiveBuffer buffer(file);
90 return LoadM32Buff(buffer.buffer);
91 }
92
93