mirror of
https://github.com/Shpoike/Quakespasm.git
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89e17301c9
the QuakeC interpreter used to use string pointer offsets from pr_strings even when the pointers lead to engine data which is often well out of 32bit range on a 64bit architecture and they lead to crashes. they now go through the new PR_SetEngineString and PR_GetString functions which turn any address outside the pr_strings area into an index into a table of engine string addresses, adding new string addresses to the table as needed. the engine strings table is allocated with 256 entries at first (see the PR_STRING_ALLOCSLOTS definition in pr_edict.c) and its size is incremented by 256 as needed and re-allocated on the zone. managing that allocation and reallocation is accomplished by the recently added Z_Realloc function. implementation based on the uhexen2 (hexen2: hammer of thyrion) engine which, in turn, is loosely based on twilight and quakeforge engines. pr_strings range check is from tyrquake. pr_edict.c: added the new PR_SetEngineString, PR_GetString, PR_AllocString public functions and the new private PR_AllocStringSlots function. made ED_NewString private to pr_edict.c and reworked it to return an index to a newly allocated string. progs.h: added prototypes for the new public PR_SetEngineString, PR_GetString and PR_AllocString functions. host_cmd.c, pr_cmds.c, pr_edict.c, pr_exec.c, progs.h, sv_main.c, sv_phys.c: modifed to use the new PR_SetEngineString and PR_GetString functions. git-svn-id: svn://svn.code.sf.net/p/quakespasm/code/trunk/quakespasm@38 af15c1b1-3010-417e-b628-4374ebc0bcbd
133 lines
3.9 KiB
C
133 lines
3.9 KiB
C
/*
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Copyright (C) 1996-2001 Id Software, Inc.
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Copyright (C) 2002-2009 John Fitzgibbons and others
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "pr_comp.h" // defs shared with qcc
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#include "progdefs.h" // generated by program cdefs
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typedef union eval_s
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{
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string_t string;
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float _float;
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float vector[3];
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func_t function;
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int _int;
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int edict;
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} eval_t;
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#define MAX_ENT_LEAFS 16
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typedef struct edict_s
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{
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qboolean free;
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link_t area; // linked to a division node or leaf
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int num_leafs;
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short leafnums[MAX_ENT_LEAFS];
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entity_state_t baseline;
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unsigned char alpha; // johnfitz -- hack to support alpha since it's not part of entvars_t
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qboolean sendinterval; // johnfitz -- send time until nextthink to client for better lerp timing
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float freetime; // sv.time when the object was freed
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entvars_t v; // C exported fields from progs
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// other fields from progs come immediately after
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} edict_t;
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#define EDICT_FROM_AREA(l) STRUCT_FROM_LINK(l,edict_t,area)
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//============================================================================
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extern dprograms_t *progs;
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extern dfunction_t *pr_functions;
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extern char *pr_strings;
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extern dstatement_t *pr_statements;
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extern globalvars_t *pr_global_struct;
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extern float *pr_globals; // same as pr_global_struct
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extern int pr_edict_size; // in bytes
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//============================================================================
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void PR_Init (void);
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void PR_ExecuteProgram (func_t fnum);
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void PR_LoadProgs (void);
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void PR_Profile_f (void);
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char *PR_GetString (int num);
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int PR_SetEngineString (char *s);
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int PR_AllocString (int bufferlength, char **ptr);
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edict_t *ED_Alloc (void);
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void ED_Free (edict_t *ed);
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void ED_Print (edict_t *ed);
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void ED_Write (FILE *f, edict_t *ed);
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char *ED_ParseEdict (char *data, edict_t *ent);
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void ED_WriteGlobals (FILE *f);
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void ED_ParseGlobals (char *data);
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void ED_LoadFromFile (char *data);
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//define EDICT_NUM(n) ((edict_t *)(sv.edicts+ (n)*pr_edict_size))
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//define NUM_FOR_EDICT(e) (((byte *)(e) - sv.edicts)/pr_edict_size)
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edict_t *EDICT_NUM(int n);
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int NUM_FOR_EDICT(edict_t *e);
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#define NEXT_EDICT(e) ((edict_t *)( (byte *)e + pr_edict_size))
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#define EDICT_TO_PROG(e) ((byte *)e - (byte *)sv.edicts)
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#define PROG_TO_EDICT(e) ((edict_t *)((byte *)sv.edicts + e))
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//============================================================================
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#define G_FLOAT(o) (pr_globals[o])
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#define G_INT(o) (*(int *)&pr_globals[o])
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#define G_EDICT(o) ((edict_t *)((byte *)sv.edicts+ *(int *)&pr_globals[o]))
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#define G_EDICTNUM(o) NUM_FOR_EDICT(G_EDICT(o))
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#define G_VECTOR(o) (&pr_globals[o])
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#define G_STRING(o) (PR_GetString(*(string_t *)&pr_globals[o]))
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#define G_FUNCTION(o) (*(func_t *)&pr_globals[o])
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#define E_FLOAT(e,o) (((float*)&e->v)[o])
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#define E_INT(e,o) (*(int *)&((float*)&e->v)[o])
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#define E_VECTOR(e,o) (&((float*)&e->v)[o])
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#define E_STRING(e,o) (PR_GetString(*(string_t *)&((float*)&e->v)[o]))
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extern int type_size[8];
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typedef void (*builtin_t) (void);
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extern builtin_t *pr_builtins;
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extern int pr_numbuiltins;
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extern int pr_argc;
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extern qboolean pr_trace;
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extern dfunction_t *pr_xfunction;
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extern int pr_xstatement;
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extern unsigned short pr_crc;
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void PR_RunError (char *error, ...);
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void ED_PrintEdicts (void);
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void ED_PrintNum (int ent);
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eval_t *GetEdictFieldValue(edict_t *ed, char *field);
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