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Initial commit of Command & Conquer Red Alert source code.

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LFeenanEA
2025-02-27 16:15:05 +00:00
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WWFLAT32/TIMER/TIMERINI.CPP Normal file
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/*
** Command & Conquer Red Alert(tm)
** Copyright 2025 Electronic Arts Inc.
**
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/***************************************************************************
** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S **
***************************************************************************
* *
* Project Name : Temp timer for 32bit lib *
* *
* File Name : TIMERINI.CPP *
* *
* Programmer : Scott K. Bowen *
* *
* Start Date : July 6, 1994 *
* *
* Last Update : July 6, 1994 [SKB] *
* *
*-------------------------------------------------------------------------*
* Functions: *
* Init_Timer_System -- Initialize the WW timer system. *
* Remove_Timer_System -- Removes the timer system. *
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
#include <wwstd.h>
#include <descmgmt.h>
#include "timer.H"
/////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////// Defines /////////////////////////////////////
#define COPY_FROM_MEM TRUE
/////////////////////////////////////////////////////////////////////////////////
////////////////////////////// timera.asm functions//////////////////////////////
#ifdef __cplusplus
extern "C" {
#endif
extern VOID *Get_RM_Timer_Address(VOID);
extern ULONG Get_RM_Timer_Size(VOID);
extern BOOL Install_Timer_Interrupt(VOID *bin_ptr, UINT rm_size, UINT freq, BOOL partial);
extern BOOL Remove_Timer_Interrupt(VOID);
#ifdef __cplusplus
}
#endif
/////////////////////////////////////////////////////////////////////////////////
/////////////////////////////// Global Data /////////////////////////////////////
BOOL TimerSystemOn = FALSE;
// Global timers that the library or user can count on existing.
TimerClass TickCount(BT_SYSTEM);
CountDownTimerClass CountDown(BT_SYSTEM, 0);
/////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////// Code ////////////////////////////////////////
/***************************************************************************
* INIT_TIMER_SYSTEM -- Initialize the WW timer system. *
* *
* *
* INPUT: UINT : user timer frequency. *
* *
* OUTPUT: BOOL success? *
* *
* WARNINGS: *
* *
* HISTORY: *
* 07/06/1994 SKB : Created. *
*=========================================================================*/
BOOL Init_Timer_System(UINT freq, BOOL partial)
{
VOID *binary;
UINT binsize;
BOOL success;
#if COPY_FROM_MEM
// The binary is stuffed in an ASM module.
// Get it's address and size.
binary = Get_RM_Timer_Address();
binsize = Get_RM_Timer_Size();
#else
WORD fd;
VOID *mem;
//
// Open binary image of real mode timer code.
// get its size and allocate a temp block for it.
// Copy the file into the block and close the file
//
fd = Open("timer.ibn", READ);
binsize = File_Size(fd);
binary = Alloc(binsize, MEM_NORMAL);
Read_File(fd, binary, binsize);
Close_File(fd);
#endif // COPY_FROM_MEM
// If no size, size too big or no address, then it's a bug.
if (!binsize || (binsize > 0xFFFFL) || !binary) {
return (FALSE);
}
TimerSystemOn = success = Install_Timer_Interrupt(binary, binsize, freq, partial);
#if !COPY_FROM_MEM
// Free up the temp pointer.
Free(mem);
#endif // !COPY_FROM_MEM
if (success) {
if (!partial)
TickCount.Start();
return (TRUE);
} else {
Remove_Timer_Interrupt();
return (FALSE);
}
}
/***************************************************************************
* REMOVE_TIMER_SYSTEM -- Removes the timer system. *
* *
* *
* INPUT: NONE. *
* *
* OUTPUT: BOOL was it removed successfuly *
* *
* WARNINGS: *
* *
* HISTORY: *
* 07/06/1994 SKB : Created. *
*=========================================================================*/
BOOL Remove_Timer_System(VOID)
{
TimerSystemOn = FALSE;
return(Remove_Timer_Interrupt());
}