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The four files used by ALL plugins.

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git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@337 fc73d0e0-1445-4013-8a0c-d673dee63da5
This commit is contained in:
Spoike 2004-10-15 00:35:53 +00:00
parent e3518a7c1f
commit ce0c0c7a1c
4 changed files with 656 additions and 0 deletions
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242
plugins/plugin.c Normal file
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//contains generic plugin code for dll/qvm
//it's this one or the engine...
#include "plugin.h"
typedef struct {
char *name;
export_t func;
} exports_t;
extern exports_t exports[16];
int vmMain( int command, int arg0, int arg1, int arg2, int arg3, int arg4, int arg5, int arg6, int arg7, int arg8, int arg9, int arg10, int arg11 )
{
int ret;
int args[12];
args[0] = arg0;
args[1] = arg1;
args[2] = arg2;
args[3] = arg3;
args[4] = arg4;
args[5] = arg5;
args[6] = arg6;
args[7] = arg7;
args[8] = arg8;
args[9] = arg9;
args[10] = arg10;
args[11] = arg11;
// return exports[command].func(args);
ret = exports[command].func(args);
return ret;
}
#ifndef Q3_VM
int (*syscall)( int arg, ... );
#endif
#define PASSFLOAT(f) *(int*)&(f)
#define ARGNAMES ,funcname
BUILTINR(void*, Plug_GetEngineFunction, (char *funcname));
#undef ARGNAMES
#define ARGNAMES ,funcname,expnum
BUILTINR(int, Plug_ExportToEngine, (char *funcname, int expnum));
#undef ARGNAMES
#define ARGNAMES ,text
BUILTIN(void, Con_Print, (char *text)); //on to main console.
#undef ARGNAMES
#define ARGNAMES ,message
BUILTIN(void, Sys_Error, (char *message)); //abort the entire engine.
#undef ARGNAMES
#define ARGNAMES ,buffer,bufsize
BUILTIN(void, Cmd_Args, (char *buffer, int bufsize)); //abort the entire engine.
#undef ARGNAMES
#define ARGNAMES ,argnum,buffer,bufsize
BUILTIN(void, Cmd_Argv, (int argnum, char *buffer, int bufsize)); //abort the entire engine.
#undef ARGNAMES
#define ARGNAMES
BUILTIN(void, Cmd_Argc, (void)); //abort the entire engine.
#undef ARGNAMES
#define ARGNAMES ,text,insert
BUILTIN(void, Cmd_AddText, (char *text, qboolean insert)); //abort the entire engine.
#undef ARGNAMES
#define ARGNAMES ,name,value
BUILTIN(void, Cvar_SetString, (char *name, char *value));
#undef ARGNAMES
#define ARGNAMES ,name,value
BUILTIN(void, Cvar_SetFloat, (char *name, float value));
#undef ARGNAMES
#define ARGNAMES ,name,retstring,sizeofretstring
BUILTINR(qboolean, Cvar_GetString, (char *name, char *retstring, int sizeofretstring));
#undef ARGNAMES
#define ARGNAMES ,name
BUILTINR(float, Cvar_GetFloat, (char *name));
#undef ARGNAMES
#define ARGNAMES ,name,defaultval,flags,grouphint
BUILTINR(qhandle_t, Cvar_Register, (char *name, char *defaultval, int flags, char *grouphint));
#undef ARGNAMES
#define ARGNAMES ,handle,modificationcount,stringv,floatv
BUILTINR(int, Cvar_Update, (qhandle_t handle, int modificationcount, char *stringv, float *floatv)); //stringv is 256 chars long, don't expect this function to do anything if modification count is unchanged.
#undef ARGNAMES
#define ARGNAMES ,pnum,stats,maxstats
BUILTIN(void, CL_GetStats, (int pnum, unsigned int *stats, int maxstats));
#undef ARGNAMES
#define ARGNAMES ,soundname
BUILTIN(void, LocalSound, (char *soundname));
#undef ARGNAMES
#define ARGNAMES ,name,iswadimage
BUILTINR(qhandle_t, Draw_LoadImage, (char *name, qboolean iswadimage)); //wad image is ONLY for loading out of q1 gfx.wad
#undef ARGNAMES
#define ARGNAMES ,PASSFLOAT(x),PASSFLOAT(y),PASSFLOAT(w),PASSFLOAT(h),PASSFLOAT(s1),PASSFLOAT(t1),PASSFLOAT(s2),PASSFLOAT(t2),image
BUILTIN(void, Draw_Image, (float x, float y, float w, float h, float s1, float t1, float s2, float t2, qhandle_t image));
#undef ARGNAMES
#define ARGNAMES ,PASSFLOAT(x),PASSFLOAT(y),PASSFLOAT(w),PASSFLOAT(h)
BUILTIN(void, Draw_Fill, (int x, int y, int w, int h));
#undef ARGNAMES
#define ARGNAMES ,x,y,characture
BUILTIN(void, Draw_Character, (int x, int y, unsigned int characture));
#undef ARGNAMES
#define ARGNAMES ,palcol
BUILTIN(void, Draw_Colourp, (int palcol));
#undef ARGNAMES
#define ARGNAMES ,PASSFLOAT(r),PASSFLOAT(g),PASSFLOAT(b)
BUILTIN(void, Draw_Colour3f, (float r, float g, float b));
#undef ARGNAMES
#define ARGNAMES ,PASSFLOAT(r),PASSFLOAT(g),PASSFLOAT(b),PASSFLOAT(a)
BUILTIN(void, Draw_Colour4f, (float r, float g, float b, float a));
#undef ARGNAMES
#define ARGNAMES ,mnum
BUILTIN(void, Menu_Control, (int mnum));
#undef ARGNAMES
#define ARGNAMES ,keyname
BUILTINR(int, Key_GetKeyCode, (char *keyname));
#undef ARGNAMES
char *va(char *format, ...) //Identical in function to the one in Quake, though I can assure you that I wrote it...
{ //It's not exactly hard, just easy to use, so gets duplicated lots.
va_list argptr;
static char string[1024];
va_start (argptr, format);
vsnprintf (string, sizeof(string), format,argptr);
va_end (argptr);
return string;
}
void Con_Printf(char *format, ...)
{
va_list argptr;
static char string[1024];
va_start (argptr, format);
vsnprintf (string, sizeof(string), format,argptr);
va_end (argptr);
Con_Print(string);
}
void Sys_Errorf(char *format, ...)
{
va_list argptr;
static char string[1024];
va_start (argptr, format);
vsnprintf (string, sizeof(string), format,argptr);
va_end (argptr);
Sys_Error(string);
}
void Plug_InitStandardBuiltins(void)
{
CHECKBUILTIN(Plug_ExportToEngine);
CHECKBUILTIN(Con_Print);
CHECKBUILTIN(Sys_Error);
CHECKBUILTIN(Cmd_Args);
CHECKBUILTIN(Cmd_Argv);
CHECKBUILTIN(Cmd_Argc);
CHECKBUILTIN(Cmd_AddText);
CHECKBUILTIN(Cvar_SetString);
CHECKBUILTIN(Cvar_SetFloat);
CHECKBUILTIN(Cvar_GetString);
CHECKBUILTIN(Cvar_GetFloat);
CHECKBUILTIN(Cvar_Register);
CHECKBUILTIN(Cvar_Update);
CHECKBUILTIN(CL_GetStats);
CHECKBUILTIN(LocalSound);
CHECKBUILTIN(Menu_Control);
CHECKBUILTIN(Key_GetKeyCode);
CHECKBUILTIN(Draw_LoadImage);
CHECKBUILTIN(Draw_Image);
CHECKBUILTIN(Draw_Fill);
CHECKBUILTIN(Draw_Character);
CHECKBUILTIN(Draw_Colourp);
CHECKBUILTIN(Draw_Colour3f);
CHECKBUILTIN(Draw_Colour4f);
}
#ifndef Q3_VM
void dllEntry( int (QDECL *syscallptr)( int arg,... ) ) {
syscall = syscallptr;
}
#endif
vmvideo_t vid;
int Plug_UpdateVideo(int *args)
{
vid.width = args[0];
vid.height = args[1];
return true;
}
int Plug_InitAPI(int *args)
{
#ifdef Q3_VM
Plug_GetEngineFunction = (void*)args[0];
#else
BUILTIN_Plug_GetEngineFunction = args[0];
#endif
Plug_InitStandardBuiltins();
Plug_Export("UpdateVideo", Plug_UpdateVideo);
return Plug_Init(args);
}
qboolean Plug_Export(char *name, export_t func)
{
int i;
for (i = 0; i < sizeof(exports)/sizeof(exports[0]); i++)
{
if (!exports[i].name)
{
exports[i].name = name;
exports[i].func = func;
return Plug_ExportToEngine(name, i);
}
}
Sys_Error("Plugin exports too many functions");
return 0;
}
exports_t exports[sizeof(exports)/sizeof(exports[0])] = {
{"Plug_Init", Plug_InitAPI},
};

3
plugins/plugin.def Normal file
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EXPORTS
vmMain
dllEntry

120
plugins/plugin.h Normal file
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#ifdef Q3_VM
//qvms just call the return value, and the engine works out which one it called.
#define EBUILTIN(t, n, args) extern t (*n) args
#define BUILTINR(t, n, args) t (*n) args
#define BUILTIN(t, n, args) t (*n) args
#define CHECKBUILTIN(n) n = (void*)Plug_GetEngineFunction(#n);
#define BUILTINISVALID(n) n!=NULL
#define double float //all floats are 32bit, qvm stuff
typedef char *va_list;
#define va_start(va,f) (va = (char *)&f + sizeof(int))
#define va_arg(va, type) (*(type *)((va += sizeof(int)) - sizeof(int)))
#define va_end(va) (va = NULL)
#define NULL (void*)0
#else
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
//DLLs need a wrapper to add the extra parameter and call a boring function.
#define EBUILTIN(t, n, args) extern int BUILTIN_##n; t n args
#define BUILTINR(t, n, args) int BUILTIN_##n; t n args {return (t)syscall(BUILTIN_##n ARGNAMES);}
#define BUILTIN(t, n, args) int BUILTIN_##n; t n args {syscall(BUILTIN_##n ARGNAMES);}
#define CHECKBUILTIN(n) BUILTIN_##n = (int)Plug_GetEngineFunction(#n);
#define BUILTINISVALID(n) BUILTIN_##n != 0
#ifdef _WIN32
#define QDECL __cdecl
#else
#define QDECL
#endif
extern int (*syscall)( int arg, ... );
#endif
typedef enum {false, true} qboolean;
typedef void *qhandle_t;
//Basic builtins:
EBUILTIN(void*, Plug_GetEngineFunction, (char *funcname)); //set up in vmMain, use this to get all other builtins
EBUILTIN(void, Con_Print, (char *text)); //on to main console.
EBUILTIN(void, Sys_Error, (char *message)); //abort the entire engine.
EBUILTIN(void, Cmd_Args, (char *buffer, int bufsize)); //abort the entire engine.
EBUILTIN(void, Cmd_Argv, (int argnum, char *buffer, int bufsize)); //abort the entire engine.
EBUILTIN(void, Cmd_Argc, (void)); //abort the entire engine.
EBUILTIN(void, Cmd_AddText, (char *text, qboolean insert));
EBUILTIN(void, Cvar_SetString, (char *name, char *value));
EBUILTIN(void, Cvar_SetFloat, (char *name, float value));
EBUILTIN(qboolean, Cvar_GetString, (char *name, char *retstring, int sizeofretstring));
EBUILTIN(float, Cvar_GetFloat, (char *name));
EBUILTIN(qhandle_t, Cvar_Register, (char *name, char *defaultval, int flags, char *grouphint));
EBUILTIN(int, Cvar_Update, (qhandle_t handle, int modificationcount, char *stringv, float *floatv)); //stringv is 256 chars long, don't expect this function to do anything if modification count is unchanged.
EBUILTIN(void, LocalSound, (char *soundname));
EBUILTIN(void, CL_GetStats, (int pnum, unsigned int *stats, int maxstats));
EBUILTIN(void, Menu_Control, (int mnum));
EBUILTIN(int, Key_GetKeyCode, (char *keyname));
EBUILTIN(qhandle_t, Draw_LoadImage, (char *name, qboolean iswadimage)); //wad image is ONLY for loading out of q1 gfx.wad
EBUILTIN(void, Draw_Image, (float x, float y, float w, float h, float s1, float t1, float s2, float t2, qhandle_t image));
EBUILTIN(void, Draw_Fill, (int x, int y, int w, int h));
EBUILTIN(void, Draw_Character, (int x, int y, unsigned int characture));
EBUILTIN(void, Draw_Colourp, (int palcol));
EBUILTIN(void, Draw_Colour3f, (float r, float g, float b));
EBUILTIN(void, Draw_Colour4f, (float r, float g, float b, float a));
typedef int (*export_t) (int *args);
char *va(char *format, ...);
int Plug_Init(int *args);
qboolean Plug_Export(char *name, export_t func);
void Con_Printf(char *format, ...);
void Sys_Errorf(char *format, ...);
typedef unsigned char qbyte;
typedef struct {
char *name;
char string[256];
char *group;
int flags;
float value;
qhandle_t handle;
int modificationcount;
} vmcvar_t;
typedef struct {
int width;
int height;
} vmvideo_t;
extern vmvideo_t vid;
#define VMCvar_SetString(c,v) \
do{ \
strcpy(c->string, v); \
c->value = (float)atof(v); \
Cvar_SetString(c->name, c->string); \
} while (0)
#define VMCvar_SetFloat(c,v) \
do { \
snprintf(c->string, sizeof(c->string), "%f", v);\
c->value = (float)(v); \
Cvar_SetFloat(c->name, c->value); \
} while(0) \
#define MAX_INFO_KEY 64
char *Info_ValueForKey (char *s, char *key);
void Info_RemoveKey (char *s, char *key);
void Info_RemovePrefixedKeys (char *start, char prefix);
void Info_RemoveNonStarKeys (char *start);
void Info_SetValueForKey (char *s, char *key, char *value, int maxsize);
void Info_SetValueForStarKey (char *s, char *key, char *value, int maxsize);

291
plugins/qvm_api.c Normal file
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/* An implementation of some 'standard' functions */
/* We use this with msvc too, because msvc's implementations of
_snprintf and _vsnprint differ - besides, this way we can make
sure qvms handle all the printf stuff that dlls do*/
#include "plugin.h"
/*
this is a fairly basic implementation.
don't expect it to do much.
You can probably get a better version from somewhere.
*/
int vsnprintf(char *buffer, int maxlen, char *format, va_list vargs)
{
int tokens=0;
char *string;
char tempbuffer[64];
int _int;
float _float;
int i;
int use0s;
int precision;
if (!maxlen)
return 0;
maxlen--;
while(*format)
{
switch(*format)
{
case '%':
precision= 0;
use0s=0;
retry:
switch(*(++format))
{
case '0':
if (!precision)
{
use0s=true;
goto retry;
}
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
precision=precision*10+*format-'0';
goto retry;
case '%': /*emit a %*/
if (--maxlen < 0)
{*buffer++='\0';return tokens;}
*buffer++ = *format;
break;
case 's':
string = va_arg(vargs, char *);
if (!string)
string = "(null)";
if (precision)
{
while (*string && precision--)
{
if (--maxlen < 0)
{*buffer++='\0';return tokens;}
*buffer++ = *string++;
}
}
else
{
while (*string)
{
if (--maxlen < 0)
{*buffer++='\0';return tokens;}
*buffer++ = *string++;
}
}
tokens++;
break;
case 'c':
_int = va_arg(vargs, char);
if (--maxlen < 0)
{*buffer++='\0';return tokens;}
*buffer++ = _int;
tokens++;
break;
case 'd':
case 'i':
_int = va_arg(vargs, int);
if (_int < 0)
{
if (--maxlen < 0)
{*buffer++='\0';return tokens;}
*buffer++ = '-';
_int *= -1;
}
i = sizeof(tempbuffer)-2;
tempbuffer[sizeof(tempbuffer)-1] = '\0';
while(_int)
{
tempbuffer[i] = _int%10 + '0';
_int/=10;
i--;
}
string = tempbuffer+i+1;
if (!*string)
{
i=61;
string = tempbuffer+i+1;
string[0] = '0';
string[1] = '\0';
}
precision -= 62-i;
while (precision>0)
{
string--;
if (use0s)
*string = '0';
else
*string = ' ';
precision--;
}
while (*string)
{
if (--maxlen < 0)
{*buffer++='\0';return tokens;}
*buffer++ = *string++;
}
tokens++;
break;
case 'f':
_float = va_arg(vargs, float);
//integer part.
_int = (int)_float;
if (_int < 0)
{
if (--maxlen < 0)
{*buffer++='\0';return tokens;}
*buffer++ = '-';
_int *= -1;
}
i = sizeof(tempbuffer)-2;
tempbuffer[sizeof(tempbuffer)-1] = '\0';
while(_int)
{
tempbuffer[i--] = _int%10 + '0';
_int/=10;
}
string = tempbuffer+i+1;
while (*string)
{
if (--maxlen < 0)
{*buffer++='\0';return tokens;}
*buffer++ = *string++;
}
_int = sizeof(tempbuffer)-2-i;
//floating point part.
_float -= (int)_float;
i = 0;
tempbuffer[i++] = '.';
while(_float - (int)_float)
{
if (i + _int > 7) //remove the excess presision.
break;
_float*=10;
tempbuffer[i++] = (int)_float%10 + '0';
}
if (i == 1) //no actual fractional part
{
tokens++;
break;
}
//concatinate to our string
tempbuffer[i] = '\0';
string = tempbuffer;
while (*string)
{
if (--maxlen < 0)
{*buffer++='\0';return tokens;}
*buffer++ = *string++;
}
tokens++;
break;
default:
string = "ERROR IN FORMAT";
while (*string)
{
if (--maxlen < 0)
{*buffer++='\0';return tokens;}
*buffer++ = *string++;
}
break;
}
break;
default:
if (--maxlen < 0)
{*buffer++='\0';return tokens;}
*buffer++ = *format;
break;
}
format++;
}
{*buffer++='\0';return tokens;}
}
int snprintf(char *buffer, int maxlen, char *format, ...)
{
int p;
va_list argptr;
va_start (argptr, format);
p = vsnprintf (buffer, maxlen, format,argptr);
va_end (argptr);
return p;
}
#ifdef Q3_VM
int strlen(const char *s)
{
int len = 0;
while(*s++)
len++;
return len;
}
int strncmp (char *s1, char *s2, int count)
{
while (1)
{
if (!count--)
return 0;
if (*s1 != *s2)
return -1; // strings not equal
if (!*s1)
return 0; // strings are equal
s1++;
s2++;
}
return -1;
}
int strcmp(char *s1, char *s2)
{
while(*s1)
{
if (*s1 != *s2)
return *s1<*s1?-1:1;
s1++;
s2++;
}
if (*s2) //s2 was longer.
return 1;
return 0;
}
char *strstr(char *str, char *sub)
{
char *p;
char *p2;
int l = strlen(sub)-1;
if (l < 0)
return NULL;
while(*str)
{
if (*str == *sub)
{
if (!strncmp (str+1, sub+1, l))
return str;
}
str++;
}
return NULL;
}
#endif