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ef2-sdk/dlls/game/interpreter.cpp

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as released 2003-11-05
2003-11-05 00:00:00 +00:00
//-----------------------------------------------------------------------------
//
// $Logfile:: /EF2/Code/DLLs/game/interpreter.cpp $
// $Revision:: 22 $
// $Date:: 9/26/03 2:36p $
//
// Copyright (C) 1999 by Ritual Entertainment, Inc.
// All rights reserved.
//
// This source is may not be distributed and/or modified without
// expressly written permission by Ritual Entertainment, Inc.
//
//
// DESCRIPTION:
//
#include "_pch_cpp.h"
#include "interpreter.h"
#include "program.h"
#include "compiler.h"
#include "scriptmaster.h"
#include "scriptslave.h"
#include "camera.h"
CLASS_DECLARATION( Listener, Interpreter, NULL )
{
{ &EV_ScriptThread_Execute, &Interpreter::Execute },
{ NULL, NULL }
};
inline void Interpreter::Archive( Archiver &arc )
{
int i;
Listener::Archive( arc );
arc.ArchiveInteger( &pr_depth );
for ( i = 0; i < pr_depth; i++ )
{
arc.ArchiveInteger( &pr_stack[i].s );
arc.ArchiveObjectPointer( ( Class ** )&pr_stack[i].f );
arc.ArchiveInteger( &pr_stack[i].stackbase );
}
arc.ArchiveRaw( localstack_type, sizeof( localstack_type[0] ) * LOCALSTACK_SIZE );
arc.ArchiveRaw( localstack, sizeof( localstack[0] ) * LOCALSTACK_SIZE );
arc.ArchiveInteger( &localstack_used );
arc.ArchiveInteger( &localstack_base );
arc.ArchiveBool( &pr_trace );
arc.ArchiveObjectPointer( ( Class ** )&pr_xfunction );
arc.ArchiveInteger( &pr_xstatement );
// arc.ArchiveObjectPointer( ( Class ** )&program ); // shouldn't need this since only one program object
arc.ArchiveInteger( &instruction_pointer );
arc.ArchiveBool( &doneProcessing );
arc.ArchiveBool( &threadDying );
updateList.Archive( arc );
arc.ArchiveInteger( &threadNum );
arc.ArchiveString( &threadName );
}
/*
============
GlobalString
Returns a string with a description and the contents of a global,
padded to 20 field width
============
*/
const char *Interpreter::GlobalString( int ofs )
{
/****************************************************************************
Squirrel : #if 0 / 1 block demoted to comment
#if 0
char *s;
int i;
ddef_t *def;
void *val;
static char line[ 128 ];
val = ( void * )&pr_globals[ ofs ];
def = ED_GlobalAtOfs( ofs );
if (!def)
sprintf (line,"%i(???)", ofs);
else
{
s = PR_ValueString (def->type, val);
sprintf (line,"%i(%s)%s", ofs, pr_strings + def->s_name, s);
}
i = strlen(line);
for ( ; i<20 ; i++)
strcat (line," ");
strcat (line," ");
return line;
#else
****************************************************************************/
return "";
/****************************************************************************
Squirrel : #if 0 / 1 block demoted to comment
#endif
****************************************************************************/
}
const char *Interpreter::GlobalStringNoContents( int ofs )
{
/****************************************************************************
Squirrel : #if 0 / 1 block demoted to comment
#if 0
int i;
ddef_t *def;
static char line[128];
def = ED_GlobalAtOfs(ofs);
if (!def)
sprintf (line,"%i(???)", ofs);
else
sprintf (line,"%i(%s)", ofs, pr_strings + def->s_name);
i = strlen(line);
for ( ; i<20 ; i++)
strcat (line," ");
strcat (line," ");
return line;
#else
****************************************************************************/
return "";
/****************************************************************************
Squirrel : #if 0 / 1 block demoted to comment
#endif
****************************************************************************/
}
/*
=================
PrintStatement
=================
*/
void Interpreter::PrintStatement( const dstatement_t *s )
{
int i;
if ( ( unsigned )s->op < ( sizeof( pr_opcodes ) / sizeof( pr_opcodes[ 0 ] ) ) )
{
Com_Printf( "%s ", pr_opcodes[ s->op ].name );
i = strlen( pr_opcodes[ s->op ].name );
for( ; i < 10; i++ )
{
Com_Printf( " " );
}
}
if ( ( s->op == OP_IF ) || ( s->op == OP_IFNOT ) )
{
Com_Printf( "%sbranch %i", GlobalString( s->a ), s->b );
}
else if ( s->op == OP_GOTO )
{
Com_Printf( "branch %i", s->a );
}
else if ( ( unsigned )( s->op - OP_STORE_F ) < 6 )
{
Com_Printf( "%s", GlobalString( s->a ) );
Com_Printf( "%s", GlobalStringNoContents( s->b ) );
}
else
{
if ( s->a )
{
Com_Printf( "%s", GlobalString( s->a ) );
}
if ( s->b )
{
Com_Printf( "%s", GlobalString( s->b ) );
}
if ( s->c )
{
Com_Printf( "%s", GlobalStringNoContents( s->c ) );
}
}
Com_Printf( "\n" );
}
/*
============
StackTrace
============
*/
void Interpreter::StackTrace( void )
{
dfunction_t *f;
int i;
// anything less than zero will be bad
if ( pr_depth <= 0 )
{
Com_Printf( "<NO STACK>\n" );
return;
}
pr_stack[ pr_depth ].f = pr_xfunction;
for( i = pr_depth; i >= 0; i-- )
{
f = pr_stack[ i ].f;
if ( !f )
{
Com_Printf( "<NO FUNCTION>\n" );
}
else
{
Com_Printf( "%12s : %s\n", f->s_file.c_str(), f->s_name.c_str() );
}
}
}
/*
============
Profile
============
*/
void Interpreter::Profile( void )
{
dfunction_t *f;
dfunction_t *best;
int max;
int num;
int i;
num = 0;
do
{
max = 0;
best = NULL;
for( i = 0; i < program->numfunctions; i++ )
{
f = &program->functions[ i ];
if ( f->profile > max )
{
max = f->profile;
best = f;
}
}
if ( best )
{
if ( num < 10 )
{
Com_Printf( "%7i %s\n", best->profile, best->s_name.c_str() );
}
num++;
best->profile = 0;
}
}
while( best );
}
/*
============
RunError
Aborts the currently executing function
============
*/
void Interpreter::RunError( const char *error, ... )
{
va_list argptr;
char string[ 1024 ];
va_start( argptr, error );
vsprintf( string, error, argptr );
va_end( argptr );
//PrintStatement( program->statements + pr_xstatement );
StackTrace();
Com_Printf( "%s\n", string );
// dump the stack so host_error can shutdown functions
pr_depth = 0;
gi.Error( ERR_DROP, "Program error" );
}
/*
====================
Interpreter::EntityError
Prints an error message and stack trace when an entity error is found.
====================
*/
inline void Interpreter::NullEntityError( const dstatement_t* statement )
{
str filename( program->filenames[ statement->file - 1 ] );
Com_Printf( "===============================================\n\n" );
gi.WDPrintf( "Null entity referenced in %s on line %d\n", filename.c_str(), statement->linenumber );
Com_Printf( "Stack Trace follows:\n" );
StackTrace();
Com_Printf( "===============================================\n\n" );
}
/*
====================
ThreadCall
Copys the args from the calling thread's stack
====================
*/
void Interpreter::ThreadCall( const Interpreter *source, dfunction_t *newf, int args )
{
int start;
int i;
if ( scr_printfunccalls->integer )
gi.Printf( "thread call - %s (ignore previous and next func call)\n", newf->s_name.c_str() );
Reset();
start = source->localstack_used - args;
for( i = 0; i < args; i++ )
{
localstack_type[ i ] = source->localstack_type[ start + i ];
switch( localstack_type[ i ] )
{
case ev_string :
localstack[ i ] = program->AllocString();
program->strings[ localstack[ i ] ].s = program->strings[ source->localstack[ start + i ] ].s;
break;
case ev_vector :
localstack[ i + 0 ] = source->localstack[ start + i + 0 ];
localstack[ i + 1 ] = source->localstack[ start + i + 1 ];
localstack[ i + 2 ] = source->localstack[ start + i + 2 ];
// set the type of the other two to float to be safe
localstack_type[ i + 1 ] = ev_float;
localstack_type[ i + 2 ] = ev_float;
// only add 2 since for loop will add 1
i += 2;
break;
default :
localstack[ i ] = source->localstack[ start + i ];
break;
}
}
localstack_used = args;
localstack_base = 0;
instruction_pointer = EnterFunction( newf );
CancelEventsOfType( EV_ScriptThread_Execute );
PostEvent( EV_ScriptThread_Execute, 0.0f );
}
/*
====================
EnterFunction
Returns the new program statement counter
====================
*/
int Interpreter::EnterFunction( dfunction_t *f )
{
int i;
int c;
int off;
int stackpos;
etype_t type;
if ( pr_depth >= MAX_STACK_DEPTH )
{
RunError( "stack overflow" );
}
if ( scr_printfunccalls->integer )
gi.Printf( "func call - %s\n", f->s_name.c_str() );
pr_stack[ pr_depth ].s = pr_xstatement;
pr_stack[ pr_depth ].f = pr_xfunction;
pr_stack[ pr_depth ].stackbase = localstack_base;
pr_depth++;
// allocate space on the stack for locals
// parms are already on stack
c = f->locals - f->parm_total;
assert( c >= 0 );
if ( localstack_used + c > LOCALSTACK_SIZE )
{
RunError( "EnterFuncton: locals stack overflow\n" );
}
off = f->parm_start + f->parm_total;
for( i = 0; i < c; i++ )
{
stackpos = localstack_used + i;
type = program->pr_global_defs[ off + i ]->type->type;
localstack_type[ stackpos ] = type;
switch( localstack_type[ stackpos ] )
{
case ev_string :
localstack[ stackpos ] = program->AllocString();
break;
case ev_vector :
localstack[ stackpos + 0 ] = program->getInteger( off + i + 0 );
localstack[ stackpos + 1 ] = program->getInteger( off + i + 1 );
localstack[ stackpos + 2 ] = program->getInteger( off + i + 2 );
// set the type of the other two to float to be safe
localstack_type[ stackpos + 1 ] = ev_float;
localstack_type[ stackpos + 2 ] = ev_float;
// only add 2 since for loop will add 1
i += 2;
break;
default :
localstack[ stackpos ] = program->getInteger( off + i );
break;
}
}
localstack_used += c;
localstack_base = localstack_used - f->locals - 1;
pr_xfunction = f;
// offset the s++
return f->first_statement - 1;
}
/*
====================
CleanupStack
====================
*/
void Interpreter::CleanupStack( int localstack_used, int oldstacktop )
{
int i;
// delete any strings that were on the stack
for( i = localstack_used; i < oldstacktop; i++ )
{
if ( localstack_type[ i ] == ev_string )
program->FreeString( localstack[ i ] );
localstack_type[ i ] = ev_void;
}
}
/*
====================
LeaveFunction
====================
*/
int Interpreter::LeaveFunction( void )
{
int c;
int oldstacktop;
if ( pr_depth <= 0 )
{
gi.Error( ERR_DROP, "prog stack underflow" );
}
// remove locals from the stack
c = pr_xfunction->locals;
oldstacktop = localstack_used;
localstack_used -= c;
if ( localstack_used < 0 )
{
RunError( "LeaveFunction: locals stack underflow\n" );
}
assert( localstack_used == ( localstack_base + 1 ) );
CleanupStack( localstack_used, oldstacktop );
// up stack
pr_depth--;
pr_xfunction = pr_stack[ pr_depth ].f;
localstack_base = pr_stack[ pr_depth ].stackbase;
return pr_stack[ pr_depth ].s;
}
const char *param_types[] = {"void", "string", "float", "vector", "entity", "function" };
Event *Interpreter::EventForFunction( const dfunction_t *func, int args )
{
Event *ev;
int i;
eval_t *st;
int pos;
int start;
ev = new Event( func->eventnum );
ev->SetSource( EV_FROM_SCRIPT );
ev->SetThread( ( CThread * )this );
ev->SetLineNumber( program->statements[ instruction_pointer ].linenumber );
start = localstack_used - args;
for( i = 0, pos = 0; pos < args; i++ )
{
st = ( eval_t * )&localstack[ start + pos ];
// remove this for shipping product.
if (
(func->parm_type[i] != localstack_type[start + pos]) &&
(func->parm_type[i] != ev_vector) &&
(localstack_type[start + pos] != ev_float)
)
{
RunError ( "===============================\n"
"Type mismatch on line %d. Func %s expected %s, got %s\n"
"===============================\n",
program->statements[ instruction_pointer ].linenumber,
func->s_name.c_str(),
param_types[func->parm_type[i]],
param_types[localstack_type[start + pos]] );
}
switch( func->parm_type[ i ] )
{
case ev_string :
ev->AddString( program->strings[ st->string ].s );
break;
case ev_float :
ev->AddFloat( st->_float );
break;
case ev_vector :
ev->AddVector( Vector( st->vector ) );
break;
case ev_entity :
if ( st->entity > 0 )
{
if ( st->entity >= game.maxentities )
{
gi.WDPrintf( "Bad entity number %d from line %d in the script\n", st->entity - 1, program->statements[ instruction_pointer ].linenumber );
}
else
{
ev->AddEntity( G_GetEntity( st->entity - 1 ) );
}
}
else if ( st->entity < 0 )
{
TargetList *list;
list = world->GetTargetList( -st->entity );
if ( list )
{
ev->AddEntity( list->GetNextEntity( NULL ) );
}
else
{
ev->AddEntity( NULL );
}
}
else
{
ev->AddEntity( NULL );
}
break;
default:
RunError( "Bad type on builtin call" );
}
pos += func->parm_size[ i ];
}
return ev;
}
void Interpreter::DoMove( void )
{
}
/*
====================
ExecuteProgram
====================
*/
void Interpreter::Execute( Event *e )
{
eval_t *a;
eval_t *b;
eval_t *c;
dstatement_t *st;
dfunction_t *newf;
int runaway;
int exitdepth;
Listener *obj;
Entity *ent;
Event *ev;
char text[ 128 ];
int i;
int n;
TargetList *list;
int oldstacktop;
Interpreter *newThread;
int stridx;
if ( threadDying )
{
return;
}
runaway = 100000;
// clear the updateList so that all objects moved this frame are notified before they receive any commands
// we have to do this here as well as in DoMove, since DoMove may not be called
updateList.ClearObjectList();
// make a stack frame
exitdepth = 0;
doneProcessing = false;
while( !doneProcessing && !threadDying )
{
// next statement
instruction_pointer++;
st = &program->statements[ instruction_pointer ];
if ( st->a < 0 )
{
a = ( eval_t * )&localstack[ localstack_base - st->a ];
}
else
{
a = ( eval_t * )&program->pr_globals[ st->a ];
}
if ( st->b < 0 )
{
b = ( eval_t * )&localstack[ localstack_base - st->b ];
}
else
{
b = ( eval_t * )&program->pr_globals[ st->b ];
}
if ( st->c < 0 )
{
c = ( eval_t * )&localstack[ localstack_base - st->c ];
}
else
{
c = ( eval_t * )&program->pr_globals[ st->c ];
}
if ( !--runaway )
{
RunError( "runaway loop error" );
}
pr_xfunction->profile++;
pr_xstatement = instruction_pointer;
if ( pr_trace )
{
PrintStatement( st );
}
switch( st->op )
{
case OP_ADD_F:
c->_float = a->_float + b->_float;
break;
case OP_ADD_V:
VectorAdd( a->vector, b->vector, c->vector );
break;
case OP_ADD_S:
program->strings[ c->string ].s = program->strings[ a->string ].s + program->strings[ b->string ].s;
break;
case OP_ADD_FS:
sprintf( text, "%g", a->_float );
program->strings[ c->string ].s = text + program->strings[ b->string ].s;
break;
case OP_ADD_SF:
sprintf( text, "%g", b->_float );
program->strings[ c->string ].s = program->strings[ a->string ].s + text;
break;
case OP_ADD_VS:
sprintf( text, "(%g %g %g)", a->vector[0], a->vector[1], a->vector[2]);
program->strings[ c->string ].s = text + program->strings[ b->string ].s;
break;
case OP_ADD_SV:
sprintf( text, "(%g %g %g)", b->vector[0], b->vector[1], b->vector[2]);
program->strings[ c->string ].s = program->strings[ a->string ].s + text ;
break ;
case OP_SUB_F:
c->_float = a->_float - b->_float;
break;
case OP_SUB_V:
VectorSubtract( a->vector, b->vector, c->vector );
break;
case OP_MUL_F:
c->_float = a->_float * b->_float;
break;
case OP_MUL_V:
c->_float = DotProduct( a->vector, b->vector );
break;
case OP_MUL_FV:
VectorScale( b->vector, a->_float, c->vector );
break;
case OP_MUL_VF:
VectorScale( a->vector, b->_float, c->vector );
break;
case OP_DIV_F:
if ( b->_float != 0.0f )
{
c->_float = a->_float / b->_float;
}
else
{
assert( 0 );
c->_float = 0;
}
break;
case OP_BITAND:
c->_float = ( int )a->_float & ( int )b->_float;
break;
case OP_BITOR:
c->_float = ( int )a->_float | ( int )b->_float;
break;
case OP_GE:
c->_float = a->_float >= b->_float;
break;
case OP_LE:
c->_float = a->_float <= b->_float;
break;
case OP_GT:
c->_float = a->_float > b->_float;
break;
case OP_LT:
c->_float = a->_float < b->_float;
break;
case OP_AND:
c->_float = a->_float && b->_float;
break;
case OP_OR:
c->_float = a->_float || b->_float;
break;
case OP_NOT_F:
c->_float = !a->_float;
break;
case OP_NOT_V:
c->_float = !a->vector[ 0 ] && !a->vector[ 1 ] && !a->vector[ 2 ];
break;
case OP_NOT_S:
c->_float = !&program->strings[ a->string ].s || ( program->strings[ a->string ].s.length() == 0 );
break;
case OP_NOT_FNC:
c->_float = !a->function;
break;
case OP_NOT_ENT:
c->_float = !a->entity;
break;
case OP_EQ_F:
c->_float = ( a->_float == b->_float );
break;
case OP_EQ_V:
c->_float = ( a->vector[ 0 ] == b->vector[ 0 ] ) &&
( a->vector[ 1 ] == b->vector[ 1 ] ) &&
( a->vector[ 2 ] == b->vector[ 2 ] );
break;
case OP_EQ_S:
c->_float = !program->strings[ a->string ].s.cmp( program->strings[ b->string ].s );
break;
case OP_EQ_E:
c->_float = ( a->_int == b->_int );
break;
case OP_EQ_FNC:
c->_float = ( a->function == b->function );
break;
case OP_NE_F:
c->_float = ( a->_float != b->_float );
break;
case OP_NE_V:
c->_float = ( a->vector[ 0 ] != b->vector[ 0 ] ) ||
( a->vector[ 1 ] != b->vector[ 1 ] ) ||
( a->vector[ 2 ] != b->vector[ 2 ] );
break;
case OP_NE_S:
c->_float = program->strings[ a->string ].s.cmp( program->strings[ b->string ].s );
break;
case OP_NE_E:
c->_float = ( a->_int != b->_int );
break;
case OP_NE_FNC:
c->_float = ( a->function != b->function );
break;
case OP_UADD_F :
b->_float += a->_float;
break;
case OP_USUB_F :
b->_float -= a->_float;
break;
case OP_UMUL_F :
b->_float *= a->_float;
break;
case OP_UDIV_F :
if ( a->_float != 0.0f )
{
b->_float /= a->_float;
}
else
{
assert( 0 );
b->_float = 0;
}
break;
case OP_UOR_F :
b->_float = ( int )b->_float | ( int )a->_float;
break;
case OP_UAND_F :
b->_float = ( int )b->_float & ( int )a->_float;
break;
case OP_UINC_F :
a->_float++;
break;
case OP_UDEC_F :
a->_float--;
break;
case OP_STORE_F:
case OP_STORE_ENT:
case OP_STORE_FNC: // pointers
b->_int = a->_int;
break;
case OP_STORE_S:
if ( st->b == OFS_RETURN )
{
// always use a static string for return values so that we
// don't have to worry about freeing it up
b->string = 0;
}
program->strings[ b->string ] = program->strings[ a->string ];
break;
case OP_STORE_V:
VectorCopy( a->vector, b->vector );
break;
case OP_STORE_FTOS:
if ( st->b == OFS_RETURN )
{
// always use a static string for return values so that we
// don't have to worry about freeing it up
b->string = 0;
}
if ( a->_float == ( float )( int )a->_float )
{
sprintf( text, "%d", ( int )a->_float );
}
else
{
sprintf( text, "%f", a->_float );
}
program->strings[ b->string ].s = text;
break;
case OP_IFNOT:
if ( !a->_int )
{
// offset the instruction_pointer++
instruction_pointer += st->b - 1;
}
break;
case OP_IF:
if ( a->_int )
{
// offset the instruction_pointer++
instruction_pointer += st->b - 1;
}
break;
case OP_GOTO:
// offset the instruction_pointer++
instruction_pointer += st->a - 1;
break;
case OP_THREAD:
if ( !a->function )
{
RunError( "NULL function" );
}
newf = &program->functions[ a->function ];
newThread = Director.CreateThread( newf->s_name );
newThread->ThreadCall( this, newf, st->b );
// return the thread number to the script
program->pr_globals[ OFS_RETURN ] = newThread->ThreadNum();
program->pr_globals[ OFS_RETURN + 1 ] = 0;
program->pr_globals[ OFS_RETURN + 2 ] = 0;
// pop our parms off the stack
oldstacktop = localstack_used;
localstack_used -= st->b;
if ( localstack_used < 0 )
{
RunError( "Execute: locals stack underflow\n" );
}
CleanupStack( localstack_used, oldstacktop );
break;
case OP_CALL:
if ( !a->function )
{
RunError( "NULL function" );
}
newf = &program->functions[ a->function ];
if ( newf->first_statement < 0 )
{
// negative statements are events
if ( ValidEvent( newf->eventnum ) )
{
ev = EventForFunction( newf, st->b );
ProcessEvent( ev );
if ( scr_printeventcalls->integer )
gi.Printf( "event call - %s\n", ev->getName() );
}
// pop our parms off the stack
oldstacktop = localstack_used;
localstack_used -= st->b;
if ( localstack_used < 0 )
{
RunError( "Execute: locals stack underflow\n" );
}
CleanupStack( localstack_used, oldstacktop );
break;
}
instruction_pointer = EnterFunction( newf );
break;
case OP_OCALL:
if ( !a->function )
{
RunError( "NULL function" );
}
newf = &program->functions[ a->function ];
assert( newf->first_statement < 0 );
if ( ( st->b >= RESERVED_OFS ) && ( st->b < OFS_END ) )
{
switch( st->b )
{
case OFS_CAM :
obj = &CameraMan;
break;
default :
obj = NULL; // shutup compiler
RunError( "Execute: Invalid object call\n" );
break;
}
if ( obj->ValidEvent( newf->eventnum ) )
{
ev = EventForFunction( newf, st->c );
obj->ProcessEvent( ev );
if ( scr_printeventcalls->integer )
gi.Printf( "event call - %s\n", ev->getName() );
}
}
else if ( b->entity > 0 )
{
ent = G_GetEntity( b->entity - 1 );
if ( ent && ent->ValidEvent( newf->eventnum ) )
{
if ( !updateList.ObjectInList( ent->entnum ) )
{
updateList.AddObject( ent->entnum );
// Tell the object that we're about to send it some orders
ent->ProcessEvent( EV_ScriptSlave_NewOrders );
}
ev = EventForFunction( newf, st->c );
ent->ProcessEvent( ev );
if ( scr_printeventcalls->integer )
gi.Printf( "event call - %s.%s\n", ent->targetname.c_str(), ev->getName() );
}
}
else if ( b->entity < 0 )
{
list = world->GetTargetList( -b->entity );
if ( !list )
{
NullEntityError( st );
}
if ( list )
{
n = list->list.NumObjects();
if ( !n )
{
NullEntityError( st );
}
if ( n )
{
ev = EventForFunction( newf, st->c );
for( i = 1; i < n; i++ )
{
ent = list->list.ObjectAt( i );
if ( ent->ValidEvent( newf->eventnum ) )
{
if ( !updateList.ObjectInList( ent->entnum ) )
{
updateList.AddObject( ent->entnum );
// Tell the object that we're about to send it some orders
ent->ProcessEvent( EV_ScriptSlave_NewOrders );
}
ent->ProcessEvent( new Event( ev ) );
if ( scr_printeventcalls->integer )
gi.Printf( "event call - %s.%s\n", ent->targetname.c_str(), ev->getName() );
}
else
{
ev->Error( "Entity '%s'(%d) cannot process event %s\n",
ent->targetname.c_str(), ent->entnum, ev->getName() );
}
}
ent = list->list.ObjectAt( i );
if ( ent->ValidEvent( newf->eventnum ) )
{
if ( !updateList.ObjectInList( ent->entnum ) )
{
updateList.AddObject( ent->entnum );
// Tell the object that we're about to send it some orders
ent->ProcessEvent( EV_ScriptSlave_NewOrders );
}
ent->ProcessEvent( ev );
if ( scr_printeventcalls->integer )
gi.Printf( "event call - %s.%s\n", ent->targetname.c_str(), ev->getName() );
}
else
{
ev->Error( "Entity '%s'(%d) cannot process event %s\n",
ent->targetname.c_str(), ent->entnum, ev->getName() );
delete ev;
}
}
}
}
else
{
NullEntityError( st );
}
// pop our parms off the stack
oldstacktop = localstack_used;
localstack_used -= st->c;
if ( localstack_used < 0 )
{
RunError( "Execute: locals stack underflow\n" );
}
CleanupStack( localstack_used, oldstacktop );
break;
case OP_PUSH_F :
if ( localstack_used >= LOCALSTACK_SIZE )
{
RunError( "Execute: locals stack overflow\n" );
}
localstack_type[ localstack_used ] = ev_float;
localstack[ localstack_used++ ] = a->_int;
break;
case OP_PUSH_FTOS :
if ( localstack_used >= LOCALSTACK_SIZE )
{
RunError( "Execute: locals stack overflow\n" );
}
if ( a->_float == ( float )( int )a->_float )
{
sprintf( text, "%d", ( int )a->_float );
}
else
{
sprintf( text, "%f", a->_float );
}
localstack_type[ localstack_used ] = ev_string;
stridx = program->AllocString();
program->strings[ stridx ].s = text;
localstack[ localstack_used++ ] = ( int )stridx;
break;
case OP_PUSH_ENT :
if ( localstack_used >= LOCALSTACK_SIZE )
{
RunError( "Execute: locals stack overflow\n" );
}
localstack_type[ localstack_used ] = ev_entity;
localstack[ localstack_used++ ] = a->_int;
break;
case OP_PUSH_FNC :
if ( localstack_used >= LOCALSTACK_SIZE )
{
RunError( "Execute: locals stack overflow\n" );
}
localstack_type[ localstack_used ] = ev_function;
localstack[ localstack_used++ ] = a->_int;
break;
case OP_PUSH_S :
if ( localstack_used >= LOCALSTACK_SIZE )
{
RunError( "Execute: locals stack overflow\n" );
}
localstack_type[ localstack_used ] = ev_string;
stridx = program->AllocString();
program->strings[ stridx ].s = program->strings[ a->string ].s;
localstack[ localstack_used++ ] = ( int )stridx;
break;
case OP_PUSH_V :
if ( localstack_used + 3 > LOCALSTACK_SIZE )
{
RunError( "Execute: locals stack overflow\n" );
}
localstack_type[ localstack_used ] = ev_float;
localstack[ localstack_used++ ] = *( int * )&a->vector[ 0 ];
localstack_type[ localstack_used ] = ev_float;
localstack[ localstack_used++ ] = *( int * )&a->vector[ 1 ];
localstack_type[ localstack_used ] = ev_float;
localstack[ localstack_used++ ] = *( int * )&a->vector[ 2 ];
break;
case OP_DONE:
case OP_RETURN:
if ( st->a < 0 )
{
if ( localstack_type[ localstack_base - st->a ] == ev_string )
{
// always use a static string for return values so that we
// don't have to worry about freeing it up
program->pr_globals[ OFS_RETURN ] = 0;
}
else
{
// wacky casting to prevent conversion from int to float
program->pr_globals[ OFS_RETURN ] = *(float *)&localstack[ localstack_base - st->a ];
program->pr_globals[ OFS_RETURN + 1 ] = *(float *)&localstack[ localstack_base - st->a + 1 ];
program->pr_globals[ OFS_RETURN + 2 ] = *(float *)&localstack[ localstack_base - st->a + 2 ];
}
}
else if ( st->a != 0 )
{
program->pr_globals[ OFS_RETURN ] = program->pr_globals[ st->a ];
program->pr_globals[ OFS_RETURN + 1 ] = program->pr_globals[ st->a + 1 ];
program->pr_globals[ OFS_RETURN + 2 ] = program->pr_globals[ st->a + 2 ];
}
instruction_pointer = LeaveFunction();
if ( pr_depth == exitdepth )
{
// all done
DoMove();
Director.NotifyOtherThreads( threadNum );
PostEvent( EV_Remove, 0.0f );
doneProcessing = true;
threadDying = true;
}
break;
default:
RunError( "Bad opcode %i", st->op );
}
}
}
void Interpreter::Reset( void )
{
CleanupStack( 0, localstack_used );
pr_depth = 0;
localstack_used = 0;
localstack_base = 0;
pr_trace = false;
pr_xfunction = NULL;
pr_xstatement = -1;
threadDying = false;
doneProcessing = true;
memset( localstack, 0, sizeof( localstack ) );
memset( pr_stack, 0, sizeof( pr_stack ) );
}
Interpreter::Interpreter()
{
localstack_used = 0; // these need to be here for cleaupStack
localstack_base = 0;
threadNum = 0;
program = &::program;
Reset();
}
Interpreter::~Interpreter()
{
Director.NotifyOtherThreads( threadNum );
Director.RemoveThread( threadNum );
CleanupStack( 0, localstack_used );
}
qboolean Interpreter::labelExists( const char *label )
{
func_t func;
func = program->findFunction( label );
if ( func < 0 || ( func >= program->numfunctions ) )
{
return false;
}
return true;
}
qboolean Interpreter::Goto( const char *label )
{
func_t func;
func = program->findFunction( label );
if ( ( func < 0 ) || ( func >= program->numfunctions ) )
{
gi.WDPrintf( "Can't find function '%s' in program\n", label );
return false;
}
instruction_pointer = EnterFunction( &program->functions[ func ] );
CancelEventsOfType( EV_ScriptThread_Execute );
PostEvent( EV_ScriptThread_Execute, 0.0f );
return true;
}
qboolean Interpreter::Setup( int num, const char *label )
{
Reset();
threadNum = num;
threadName = label;
return Goto( label );
}
Reference in a new issue Copy permalink