summaryrefslogtreecommitdiff
path: root/src/deh_ptr.c
blob: a819ddc0d8352e2795d3c19404ac0d68a752083a (plain)
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
// Emacs style mode select   -*- C++ -*- 
//-----------------------------------------------------------------------------
//
// Copyright(C) 2005 Simon Howard
//
// 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., 59 Temple Place - Suite 330, Boston, MA
// 02111-1307, USA.
//
//-----------------------------------------------------------------------------
//
// Parses Action Pointer entries in dehacked files
//
//-----------------------------------------------------------------------------

#include <stdlib.h>
#include <string.h>

#include "doomdef.h"
#include "doomtype.h"
#include "info.h"

#include "deh_defs.h"
#include "deh_io.h"
#include "deh_main.h"

static actionf_t codeptrs[NUMSTATES];

static int CodePointerIndex(actionf_t *ptr)
{
    int i;

    for (i=0; i<NUMSTATES; ++i)
    {
        if (!memcmp(&codeptrs[i], ptr, sizeof(actionf_t)))
        {
            return i;
        }
    }

    return -1;
}

static void DEH_PointerInit(void)
{
    int i;
    
    // Initialise list of dehacked pointers

    for (i=0; i<NUMSTATES; ++i)
        codeptrs[i] = states[i].action;
}

static void *DEH_PointerStart(deh_context_t *context, char *line)
{
    int frame_number = 0;
    
    // FIXME: can the third argument here be something other than "Frame"
    // or are we ok?

    if (sscanf(line, "Pointer %*i (%*s %i)", &frame_number) != 1)
    {
        DEH_Warning(context, "Parse error on section start");
        return NULL;
    }

    if (frame_number < 0 || frame_number >= NUMSTATES)
    {
        DEH_Warning(context, "Invalid frame number: %i", frame_number);
        return NULL;
    }

    return &states[frame_number];
}

static void DEH_PointerParseLine(deh_context_t *context, char *line, void *tag)
{
    state_t *state;
    char *variable_name, *value;
    int ivalue;
    
    if (tag == NULL)
       return;

    state = (state_t *) tag;

    // Parse the assignment

    if (!DEH_ParseAssignment(line, &variable_name, &value))
    {
        // Failed to parse
        DEH_Warning(context, "Failed to parse assignment");
        return;
    }
    
//    printf("Set %s to %s for state\n", variable_name, value);

    // all values are integers

    ivalue = atoi(value);
    
    // set the appropriate field

    if (!strcasecmp(variable_name, "Codep frame"))
    {
        if (ivalue < 0 || ivalue >= NUMSTATES)
        {
            DEH_Warning(context, "Invalid state '%i'", ivalue);
        }
        else
        {        
            state->action = codeptrs[ivalue];
        }
    }
    else
    {
        DEH_Warning(context, "Unknown variable name '%s'", variable_name);
    }
}

static void DEH_PointerMD5Sum(md5_context_t *context)
{
    int i;

    for (i=0; i<NUMSTATES; ++i)
    {
        MD5_UpdateInt32(context, CodePointerIndex(&states[i].action));
    }
}

deh_section_t deh_section_pointer =
{
    "Pointer",
    DEH_PointerInit,
    DEH_PointerStart,
    DEH_PointerParseLine,
    NULL,
    DEH_PointerMD5Sum,
};