814 lines
20 KiB
C++
814 lines
20 KiB
C++
/*
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sys_event.cpp
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Event are used for scheduling tasks and for linking script commands.
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*/
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#include "../../idlib/precompiled.h"
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#pragma hdrstop
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#include "../Game_local.h"
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#define MAX_EVENTSPERFRAME 8192 // Upped from 4096
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//#define CREATE_EVENT_CODE
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/***********************************************************************
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idEventDef
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***********************************************************************/
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idEventDef *idEventDef::eventDefList[MAX_EVENTS];
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int idEventDef::numEventDefs = 0;
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static bool eventError = false;
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static char eventErrorMsg[ 128 ];
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/*
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================
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idEventDef::idEventDef
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================
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*/
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idEventDef::idEventDef( const char *command, const char *formatspec, char returnType ) {
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idEventDef *ev;
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int i;
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unsigned int bits;
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assert( command );
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assert( !idEvent::initialized );
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// Allow NULL to indicate no args, but always store it as ""
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// so we don't have to check for it.
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if ( !formatspec ) {
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formatspec = "";
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}
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this->name = command;
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this->formatspec = formatspec;
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this->returnType = returnType;
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numargs = strlen( formatspec );
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assert( numargs <= D_EVENT_MAXARGS );
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if ( numargs > D_EVENT_MAXARGS ) {
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eventError = true;
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sprintf( eventErrorMsg, "idEventDef::idEventDef : Too many args for '%s' event.", name );
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return;
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}
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// make sure the format for the args is valid, calculate the formatspecindex, and the offsets for each arg
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bits = 0;
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argsize = 0;
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memset( argOffset, 0, sizeof( argOffset ) );
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for( i = 0; i < numargs; i++ ) {
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argOffset[ i ] = argsize;
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switch( formatspec[ i ] ) {
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case D_EVENT_FLOAT :
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bits |= 1 << i;
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argsize += sizeof( float );
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break;
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case D_EVENT_INTEGER :
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argsize += sizeof( int );
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break;
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case D_EVENT_VECTOR :
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argsize += sizeof( idVec3 );
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break;
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case D_EVENT_STRING :
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argsize += MAX_STRING_LEN;
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break;
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case D_EVENT_ENTITY :
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argsize += sizeof( idEntityPtr<idEntity> );
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break;
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case D_EVENT_ENTITY_NULL :
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argsize += sizeof( idEntityPtr<idEntity> );
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break;
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case D_EVENT_TRACE :
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argsize += sizeof( trace_t ) + MAX_STRING_LEN + sizeof( bool );
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break;
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default :
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eventError = true;
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sprintf( eventErrorMsg, "idEventDef::idEventDef : Invalid arg format '%s' string for '%s' event.", formatspec, name );
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return;
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break;
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}
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}
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// calculate the formatspecindex
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formatspecIndex = ( 1 << ( numargs + D_EVENT_MAXARGS ) ) | bits;
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// go through the list of defined events and check for duplicates
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// and mismatched format strings
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eventnum = numEventDefs;
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for( i = 0; i < eventnum; i++ ) {
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ev = eventDefList[ i ];
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if ( idStr::Cmp( command, ev->name ) == 0 ) {
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if ( idStr::Cmp( formatspec, ev->formatspec ) != 0 ) {
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eventError = true;
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sprintf( eventErrorMsg, "idEvent '%s' defined twice with same name but differing format strings ('%s'!='%s').",
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command, formatspec, ev->formatspec );
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return;
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}
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if ( ev->returnType != returnType ) {
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eventError = true;
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sprintf( eventErrorMsg, "idEvent '%s' defined twice with same name but differing return types ('%c'!='%c').",
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command, returnType, ev->returnType );
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return;
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}
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// Don't bother putting the duplicate event in list.
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eventnum = ev->eventnum;
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return;
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}
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}
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ev = this;
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if ( numEventDefs >= MAX_EVENTS ) {
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eventError = true;
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sprintf( eventErrorMsg, "numEventDefs >= MAX_EVENTS" );
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return;
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}
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eventDefList[numEventDefs] = ev;
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numEventDefs++;
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}
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/*
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================
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idEventDef::NumEventCommands
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================
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*/
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int idEventDef::NumEventCommands( void ) {
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return numEventDefs;
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}
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/*
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================
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idEventDef::GetEventCommand
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================
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*/
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const idEventDef *idEventDef::GetEventCommand( int eventnum ) {
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return eventDefList[ eventnum ];
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}
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/*
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================
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idEventDef::FindEvent
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================
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*/
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const idEventDef *idEventDef::FindEvent( const char *name ) {
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idEventDef *ev;
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int num;
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int i;
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assert( name );
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num = numEventDefs;
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for( i = 0; i < num; i++ ) {
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ev = eventDefList[ i ];
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if ( idStr::Cmp( name, ev->name ) == 0 ) {
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return ev;
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}
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}
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return NULL;
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}
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/***********************************************************************
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idEvent
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***********************************************************************/
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static idLinkList<idEvent> FreeEvents;
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static idLinkList<idEvent> EventQueue;
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static idEvent EventPool[ MAX_EVENTS ];
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bool idEvent::initialized = false;
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idDynamicBlockAlloc<byte, 16 * 1024, 256, MA_EVENT> idEvent::eventDataAllocator;
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/*
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================
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idEvent::~idEvent()
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================
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*/
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idEvent::~idEvent() {
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Free();
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}
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void idEvent::WriteDebugInfo( void ) {
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idEvent *event;
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int count = 0;
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idFile *FH = fileSystem->OpenFileAppend( "idEvents.txt" );
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FH->Printf( "Num Events = %d\n", EventQueue.Num() );
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event = EventQueue.Next();
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while( event != NULL ) {
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count++;
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FH->Printf( "%d. %d - %s - %s - %s\n", count, event->time, event->eventdef->GetName(), event->typeinfo->classname, event->object->GetClassname() );
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event = event->eventNode.Next();
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}
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FH->Printf( "\n\n" );
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fileSystem->CloseFile( FH );
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}
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/*
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================
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idEvent::Alloc
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================
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*/
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idEvent *idEvent::Alloc( const idEventDef *evdef, int numargs, va_list args ) {
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idEvent *ev;
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size_t size;
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const char *format;
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idEventArg *arg;
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byte *dataPtr;
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int i;
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const char *materialName;
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if ( FreeEvents.IsListEmpty() ) {
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WriteDebugInfo( );
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gameLocal.Error( "idEvent::Alloc : No more free events for '%s' event.", evdef->GetName() );
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}
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ev = FreeEvents.Next();
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ev->eventNode.Remove();
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ev->eventdef = evdef;
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if ( numargs != evdef->GetNumArgs() ) {
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gameLocal.Error( "idEvent::Alloc : Wrong number of args for '%s' event.", evdef->GetName() );
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}
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size = evdef->GetArgSize();
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if ( size ) {
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ev->data = eventDataAllocator.Alloc( size );
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memset( ev->data, 0, size );
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} else {
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ev->data = NULL;
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}
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format = evdef->GetArgFormat();
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for( i = 0; i < numargs; i++ ) {
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arg = va_arg( args, idEventArg * );
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if ( format[ i ] != arg->type ) {
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// RAVEN BEGIN
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// abahr: type checking change as per Jim D.
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if ( ( format[ i ] == D_EVENT_ENTITY_NULL ) && ( arg->type == D_EVENT_ENTITY ) ) {
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// these types are identical, so allow them
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} else if ( ( arg->type == D_EVENT_INTEGER ) && ( arg->value == 0 ) ) {
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if ( ( format[ i ] == D_EVENT_ENTITY ) || ( format[ i ] == D_EVENT_ENTITY_NULL ) || ( format[ i ] == D_EVENT_TRACE ) ) {
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// when NULL is passed in for an entity or trace, it gets cast as an integer 0, so don't give an error when it happens
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} else {
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gameLocal.Error( "idEvent::Alloc : Wrong type passed in for arg # %d on '%s' event.", i, evdef->GetName() );
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}
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} else {
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gameLocal.Error( "idEvent::Alloc : Wrong type passed in for arg # %d on '%s' event.", i, evdef->GetName() );
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}
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// RAVEN END
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}
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dataPtr = &ev->data[ evdef->GetArgOffset( i ) ];
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switch( format[ i ] ) {
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case D_EVENT_FLOAT :
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case D_EVENT_INTEGER :
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*reinterpret_cast<int *>( dataPtr ) = arg->value;
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break;
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case D_EVENT_VECTOR :
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if ( arg->value ) {
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*reinterpret_cast<idVec3 *>( dataPtr ) = *reinterpret_cast<const idVec3 *>( arg->value );
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}
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break;
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case D_EVENT_STRING :
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if ( arg->value ) {
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idStr::Copynz( reinterpret_cast<char *>( dataPtr ), reinterpret_cast<const char *>( arg->value ), MAX_STRING_LEN );
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}
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break;
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// RAVEN BEGIN
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// abahr: type checking change as per Jim D.
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// jshepard: TODO FIXME HACK this never ever produces desired, positive results. Events should be built to prepare for null entities, especially when dealing with
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// script events. This will throw a warning, and events should be prepared to deal with null entities.
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case D_EVENT_ENTITY :
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if ( reinterpret_cast<idEntity *>( arg->value ) == NULL ) {
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gameLocal.Warning( "idEvent::Alloc : NULL entity passed in to event function that expects a non-NULL pointer on arg # %d on '%s' event.", i, evdef->GetName() );
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}
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*reinterpret_cast< idEntityPtr<idEntity> * >( dataPtr ) = reinterpret_cast<idEntity *>( arg->value );
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break;
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case D_EVENT_ENTITY_NULL :
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*reinterpret_cast< idEntityPtr<idEntity> * >( dataPtr ) = reinterpret_cast<idEntity *>( arg->value );
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break;
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//RAVEN END
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case D_EVENT_TRACE :
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if ( arg->value ) {
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*reinterpret_cast<bool *>( dataPtr ) = true;
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*reinterpret_cast<trace_t *>( dataPtr + sizeof( bool ) ) = *reinterpret_cast<const trace_t *>( arg->value );
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// save off the material as a string since the pointer won't be valid in save games.
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// since we save off the entire trace_t structure, if the material is NULL here,
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// it will be NULL when we process it, so we don't need to save off anything in that case.
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if ( reinterpret_cast<const trace_t *>( arg->value )->c.material ) {
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materialName = reinterpret_cast<const trace_t *>( arg->value )->c.material->GetName();
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idStr::Copynz( reinterpret_cast<char *>( dataPtr + sizeof( bool ) + sizeof( trace_t ) ), materialName, MAX_STRING_LEN );
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}
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} else {
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*reinterpret_cast<bool *>( dataPtr ) = false;
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}
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break;
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default :
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gameLocal.Error( "idEvent::Alloc : Invalid arg format '%s' string for '%s' event.", format, evdef->GetName() );
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break;
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}
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}
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return ev;
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}
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/*
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================
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idEvent::CopyArgs
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================
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*/
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void idEvent::CopyArgs( const idEventDef *evdef, int numargs, va_list args, int data[ D_EVENT_MAXARGS ] ) {
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int i;
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const char *format;
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idEventArg *arg;
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format = evdef->GetArgFormat();
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if ( numargs != evdef->GetNumArgs() ) {
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gameLocal.Error( "idEvent::CopyArgs : Wrong number of args for '%s' event.", evdef->GetName() );
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}
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for( i = 0; i < numargs; i++ ) {
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arg = va_arg( args, idEventArg * );
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if ( format[ i ] != arg->type ) {
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// RAVEN BEGIN
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// abahr: type checking change as per Jim D.
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if ( ( format[ i ] == D_EVENT_ENTITY_NULL ) && ( arg->type == D_EVENT_ENTITY ) ) {
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// these types are identical, so allow them
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} else if ( ( arg->type == D_EVENT_INTEGER ) && ( arg->value == 0 ) ) {
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if ( ( format[ i ] == D_EVENT_ENTITY ) || ( format[ i ] == D_EVENT_ENTITY_NULL ) ) {
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// when NULL is passed in for an entity, it gets cast as an integer 0, so don't give an error when it happens
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} else {
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gameLocal.Error( "idEvent::Alloc : Wrong type passed in for arg # %d on '%s' event.", i, evdef->GetName() );
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}
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} else {
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gameLocal.Error( "idEvent::Alloc : Wrong type passed in for arg # %d on '%s' event.", i, evdef->GetName() );
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}
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// RAVEN END
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}
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data[ i ] = arg->value;
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}
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}
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/*
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================
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idEvent::Free
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================
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*/
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void idEvent::Free( void ) {
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if ( data ) {
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eventDataAllocator.Free( data );
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data = NULL;
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}
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eventdef = NULL;
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time = 0;
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object = NULL;
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typeinfo = NULL;
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eventNode.SetOwner( this );
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eventNode.AddToEnd( FreeEvents );
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}
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/*
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================
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idEvent::Schedule
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================
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*/
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void idEvent::Schedule( idClass *obj, const idTypeInfo *type, int time ) {
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idEvent *event;
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assert( initialized );
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if ( !initialized ) {
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return;
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}
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object = obj;
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typeinfo = type;
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// wraps after 24 days...like I care. ;)
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this->time = gameLocal.time + time;
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eventNode.Remove();
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event = EventQueue.Next();
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while( ( event != NULL ) && ( this->time >= event->time ) ) {
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event = event->eventNode.Next();
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}
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if ( event ) {
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eventNode.InsertBefore( event->eventNode );
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} else {
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eventNode.AddToEnd( EventQueue );
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}
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}
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/*
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================
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idEvent::CancelEvents
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================
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*/
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void idEvent::CancelEvents( const idClass *obj, const idEventDef *evdef ) {
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idEvent *event;
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idEvent *next;
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if ( !initialized ) {
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return;
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}
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for( event = EventQueue.Next(); event != NULL; event = next ) {
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next = event->eventNode.Next();
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if ( event->object == obj ) {
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if ( !evdef || ( evdef == event->eventdef ) ) {
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event->Free();
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}
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}
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}
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}
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// RAVEN BEGIN
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// abahr:
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/*
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================
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idEvent::EventIsPosted
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================
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*/
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bool idEvent::EventIsPosted( const idClass *obj, const idEventDef *evdef ) {
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idEvent *event;
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idEvent *next;
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if ( !initialized ) {
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return false;
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}
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for( event = EventQueue.Next(); event != NULL; event = next ) {
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next = event->eventNode.Next();
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if( event->object == obj && evdef == event->eventdef ) {
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return true;
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}
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}
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return false;
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}
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// RAVEN END
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/*
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================
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idEvent::ClearEventList
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================
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*/
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void idEvent::ClearEventList( void ) {
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int i;
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//
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// initialize lists
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//
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FreeEvents.Clear();
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EventQueue.Clear();
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//
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// add the events to the free list
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//
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for( i = 0; i < MAX_EVENTS; i++ ) {
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EventPool[ i ].Free();
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}
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}
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/*
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================
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idEvent::ServiceEvents
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================
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*/
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void idEvent::ServiceEvents( void ) {
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idEvent *event;
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int num;
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int args[ D_EVENT_MAXARGS ];
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int offset;
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int i;
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int numargs;
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const char *formatspec;
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trace_t **tracePtr;
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const idEventDef *ev;
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byte *data;
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const char *materialName;
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num = 0;
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while( !EventQueue.IsListEmpty() ) {
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#ifdef _XENON
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session->PacifierUpdate();
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#endif
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event = EventQueue.Next();
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assert( event );
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if ( event->time > gameLocal.time ) {
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break;
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}
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// copy the data into the local args array and set up pointers
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ev = event->eventdef;
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formatspec = ev->GetArgFormat();
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numargs = ev->GetNumArgs();
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for( i = 0; i < numargs; i++ ) {
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offset = ev->GetArgOffset( i );
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data = event->data;
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switch( formatspec[ i ] ) {
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case D_EVENT_FLOAT :
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case D_EVENT_INTEGER :
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args[ i ] = *reinterpret_cast<int *>( &data[ offset ] );
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break;
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case D_EVENT_VECTOR :
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*reinterpret_cast<idVec3 **>( &args[ i ] ) = reinterpret_cast<idVec3 *>( &data[ offset ] );
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break;
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case D_EVENT_STRING :
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*reinterpret_cast<const char **>( &args[ i ] ) = reinterpret_cast<const char *>( &data[ offset ] );
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break;
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// RAVEN BEGIN
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// abahr: type checking change as per Jim D.
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case D_EVENT_ENTITY :
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|
*reinterpret_cast<idEntity **>( &args[ i ] ) = reinterpret_cast< idEntityPtr<idEntity> * >( &data[ offset ] )->GetEntity();
|
|
if ( *reinterpret_cast<idEntity **>( &args[ i ] ) == NULL ) {
|
|
gameLocal.Warning( "idEvent::ServiceEvents : NULL entity passed in to event function that expects a non-NULL pointer on arg # %d on '%s' event.", i, ev->GetName() );
|
|
}
|
|
break;
|
|
|
|
case D_EVENT_ENTITY_NULL :
|
|
*reinterpret_cast<idEntity **>( &args[ i ] ) = reinterpret_cast< idEntityPtr<idEntity> * >( &data[ offset ] )->GetEntity();
|
|
break;
|
|
// RAVEN END
|
|
case D_EVENT_TRACE :
|
|
tracePtr = reinterpret_cast<trace_t **>( &args[ i ] );
|
|
if ( *reinterpret_cast<bool *>( &data[ offset ] ) ) {
|
|
*tracePtr = reinterpret_cast<trace_t *>( &data[ offset + sizeof( bool ) ] );
|
|
|
|
if ( ( *tracePtr )->c.material != NULL ) {
|
|
// look up the material name to get the material pointer
|
|
materialName = reinterpret_cast<const char *>( &data[ offset + sizeof( bool ) + sizeof( trace_t ) ] );
|
|
( *tracePtr )->c.material = declManager->FindMaterial( materialName, true );
|
|
}
|
|
} else {
|
|
*tracePtr = NULL;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
gameLocal.Error( "idEvent::ServiceEvents : Invalid arg format '%s' string for '%s' event.", formatspec, ev->GetName() );
|
|
}
|
|
}
|
|
|
|
// the event is removed from its list so that if then object
|
|
// is deleted, the event won't be freed twice
|
|
event->eventNode.Remove();
|
|
assert( event->object );
|
|
|
|
// savegames can trash the object, so do this for safety
|
|
if ( event->object ) {
|
|
event->object->ProcessEventArgPtr( ev, args );
|
|
}
|
|
|
|
#if 0
|
|
// event functions may never leave return values on the FPU stack
|
|
// enable this code to check if any event call left values on the FPU stack
|
|
if ( !sys->FPU_StackIsEmpty() ) {
|
|
gameLocal.Error( "idEvent::ServiceEvents %d: %s left a value on the FPU stack\n", num, ev->GetName() );
|
|
}
|
|
#endif
|
|
|
|
// return the event to the free list
|
|
event->Free();
|
|
|
|
// Don't allow ourselves to stay in here too long. An abnormally high number
|
|
// of events being processed is evidence of an infinite loop of events.
|
|
num++;
|
|
if ( num > MAX_EVENTSPERFRAME ) {
|
|
gameLocal.Error( "Event overflow. Possible infinite loop in script." );
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idEvent::Init
|
|
================
|
|
*/
|
|
void idEvent::Init( void ) {
|
|
gameLocal.Printf( "Initializing event system\n" );
|
|
|
|
if ( eventError ) {
|
|
gameLocal.Error( "%s", eventErrorMsg );
|
|
}
|
|
|
|
#ifdef CREATE_EVENT_CODE
|
|
void CreateEventCallbackHandler();
|
|
CreateEventCallbackHandler();
|
|
gameLocal.Error( "Wrote event callback handler" );
|
|
#endif
|
|
|
|
if ( initialized ) {
|
|
gameLocal.Printf( "...already initialized\n" );
|
|
ClearEventList();
|
|
return;
|
|
}
|
|
|
|
ClearEventList();
|
|
|
|
eventDataAllocator.Init();
|
|
|
|
gameLocal.Printf( "...%i event definitions\n", idEventDef::NumEventCommands() );
|
|
|
|
// the event system has started
|
|
initialized = true;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idEvent::Shutdown
|
|
================
|
|
*/
|
|
void idEvent::Shutdown( void ) {
|
|
gameLocal.Printf( "Shutdown event system\n" );
|
|
|
|
if ( !initialized ) {
|
|
gameLocal.Printf( "...not started\n" );
|
|
return;
|
|
}
|
|
|
|
ClearEventList();
|
|
|
|
eventDataAllocator.Shutdown();
|
|
|
|
// say it is now shutdown
|
|
initialized = false;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idEvent::Save
|
|
================
|
|
*/
|
|
void idEvent::Save( idSaveGame *savefile ) {
|
|
idEvent *event;
|
|
|
|
savefile->WriteInt( EventQueue.Num() );
|
|
|
|
event = EventQueue.Next();
|
|
while( event != NULL ) {
|
|
savefile->WriteInt( event->time );
|
|
savefile->WriteString( event->eventdef->GetName() );
|
|
savefile->WriteString( event->typeinfo->classname );
|
|
savefile->WriteObject( event->object );
|
|
savefile->WriteInt( event->eventdef->GetArgSize() );
|
|
savefile->Write( event->data, event->eventdef->GetArgSize() );
|
|
|
|
event = event->eventNode.Next();
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idEvent::Restore
|
|
================
|
|
*/
|
|
void idEvent::Restore( idRestoreGame *savefile ) {
|
|
int i;
|
|
int num;
|
|
int argsize;
|
|
idStr name;
|
|
idEvent *event;
|
|
|
|
savefile->ReadInt( num );
|
|
|
|
for ( i = 0; i < num; i++ ) {
|
|
if ( FreeEvents.IsListEmpty() ) {
|
|
gameLocal.Error( "idEvent::Restore : No more free events" );
|
|
}
|
|
|
|
event = FreeEvents.Next();
|
|
event->eventNode.Remove();
|
|
event->eventNode.AddToEnd( EventQueue );
|
|
|
|
savefile->ReadInt( event->time );
|
|
|
|
// read the event name
|
|
savefile->ReadString( name );
|
|
event->eventdef = idEventDef::FindEvent( name );
|
|
if ( !event->eventdef ) {
|
|
savefile->Error( "idEvent::Restore: unknown event '%s'", name.c_str() );
|
|
}
|
|
|
|
// read the classtype
|
|
savefile->ReadString( name );
|
|
event->typeinfo = idClass::GetClass( name );
|
|
if ( !event->typeinfo ) {
|
|
savefile->Error( "idEvent::Restore: unknown class '%s' on event '%s'", name.c_str(), event->eventdef->GetName() );
|
|
}
|
|
|
|
savefile->ReadObject( event->object );
|
|
assert( event->object );
|
|
|
|
// read the args
|
|
savefile->ReadInt( argsize );
|
|
if ( argsize != event->eventdef->GetArgSize() ) {
|
|
savefile->Error( "idEvent::Restore: arg size (%d) doesn't match saved arg size(%d) on event '%s'", event->eventdef->GetArgSize(), argsize, event->eventdef->GetName() );
|
|
}
|
|
if ( argsize ) {
|
|
event->data = eventDataAllocator.Alloc( argsize );
|
|
savefile->Read( event->data, argsize );
|
|
} else {
|
|
event->data = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef CREATE_EVENT_CODE
|
|
/*
|
|
================
|
|
CreateEventCallbackHandler
|
|
================
|
|
*/
|
|
void CreateEventCallbackHandler( void ) {
|
|
int num;
|
|
int count;
|
|
int i, j, k;
|
|
char argString[ D_EVENT_MAXARGS + 1 ];
|
|
idStr string1;
|
|
idStr string2;
|
|
idFile *file;
|
|
|
|
file = fileSystem->OpenFileWrite( "Callbacks.cpp" );
|
|
|
|
file->Printf( "// generated file - see CREATE_EVENT_CODE\n\n" );
|
|
|
|
for( i = 1; i <= D_EVENT_MAXARGS; i++ ) {
|
|
|
|
file->Printf( "\t/*******************************************************\n\n\t\t%d args\n\n\t*******************************************************/\n\n", i );
|
|
|
|
for ( j = 0; j < ( 1 << i ); j++ ) {
|
|
for ( k = 0; k < i; k++ ) {
|
|
argString[ k ] = j & ( 1 << k ) ? 'f' : 'i';
|
|
}
|
|
argString[ i ] = '\0';
|
|
|
|
string1.Empty();
|
|
string2.Empty();
|
|
|
|
for( k = 0; k < i; k++ ) {
|
|
if ( j & ( 1 << k ) ) {
|
|
string1 += "const float";
|
|
string2 += va( "*( float * )&data[ %d ]", k );
|
|
} else {
|
|
string1 += "const int";
|
|
string2 += va( "data[ %d ]", k );
|
|
}
|
|
|
|
if ( k < i - 1 ) {
|
|
string1 += ", ";
|
|
string2 += ", ";
|
|
}
|
|
}
|
|
|
|
file->Printf( "\tcase %d :\n\t\ttypedef void ( idClass::*eventCallback_%s_t )( %s );\n", ( 1 << ( i + D_EVENT_MAXARGS ) ) + j, argString, string1.c_str() );
|
|
file->Printf( "\t\t( this->*( eventCallback_%s_t )callback )( %s );\n\t\tbreak;\n\n", argString, string2.c_str() );
|
|
|
|
}
|
|
}
|
|
|
|
fileSystem->CloseFile( file );
|
|
}
|
|
|
|
#endif
|