Initial commit of Command & Conquer Red Alert source code.

WWFLAT32/INCLUDE/TIMER.H

@@ -0,0 +1,154 @@
+/*
+**	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 : Timer Class Functions                    *
+ *                                                                         *
+ *                    File Name : TIMER.H                                  *
+ *                                                                         *
+ *                   Programmer : Scott K. Bowen                           *
+ *                                                                         *
+ *                   Start Date : July 6, 1994                             *
+ *                                                                         *
+ *                  Last Update : July 12, 1994   [SKB]                    *
+ *                                                                         *
+ *-------------------------------------------------------------------------*
+ * Functions:                                                              *
+ * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
+
+#ifndef TIMER_H
+#define TIMER_H
+
+/*=========================================================================*/
+/* The following prototypes are for the file: TIMERA.ASM							*/
+/*=========================================================================*/
+
+//////////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////// Externs /////////////////////////////////////////////
+extern BOOL TimerSystemOn;
+
+
+/*=========================================================================*/
+typedef enum BaseTimerEnum {
+	BT_SYSTEM,			// System timer (60 / second).
+	BT_USER				// User controllable timer (? / second).
+} BaseTimerEnum;
+
+class TimerClass {
+ 	public:
+		// Constructor.  Timers set before low level init has been done will not
+		// be able to be 'Started' or 'on' until timer system is in place.
+		TimerClass(BaseTimerEnum timer=BT_SYSTEM, BOOL start=FALSE);
+
+		// No destructor.
+		~TimerClass(void){}
+
+		//
+		long Set(long value, BOOL start=TRUE);	// Set initial timer value.
+		long Stop(void);				// Pause timer.
+		long Start(void);				// Resume timer.
+		long Reset(BOOL start=TRUE);	// Reset timer to zero.
+		long Time(void);				// Fetch current timer value.
+
+	protected:
+		long Started;					// Time last started (0 == not paused).
+		long Accumulated;				//	Total accumulated ticks.
+
+	private:
+		long (*Get_Ticks)(void);	// System timer fetch.
+};
+
+
+inline long TimerClass::Reset(BOOL start)
+{
+	return(Set(0, start));
+}
+
+
+//lint -esym(1509,TimerClass)
+class CountDownTimerClass : private TimerClass {
+	public:
+		// Constructor.  Timers set before low level init has been done will not
+		// be able to be 'Started' or 'on' until timer system is in place.
+		CountDownTimerClass(BaseTimerEnum timer, long set, int on=FALSE);
+		CountDownTimerClass(BaseTimerEnum timer=BT_SYSTEM, int on=FALSE);
+
+		// No destructor.
+		~CountDownTimerClass(void){}
+
+		// Public functions
+		long Set(long set, BOOL start=TRUE);	// Set count down value.
+		long Reset(BOOL start=TRUE);	// Reset timer to zero.
+		long Stop(void);			// Pause timer.
+		long Start(void);			// Resume timer.
+		long Time(void);			// Fetch current count down value.
+
+	protected:
+		long DelayTime;			// Ticks remaining before countdown timer expires.
+};
+
+inline long CountDownTimerClass::Stop(void)
+{
+	TimerClass::Stop();
+	return(Time());
+}
+
+inline long CountDownTimerClass::Start(void)
+{
+	TimerClass::Start();
+	return(Time());
+}
+
+inline long CountDownTimerClass::Reset(BOOL start)
+{
+	return (TimerClass::Reset(start));
+}
+
+
+
+//////////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////// externs  //////////////////////////////////////////
+
+//extern TimerClass					TickCount;
+extern CountDownTimerClass		CountDown;
+
+//////////////////////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////// Prototypes //////////////////////////////////////////
+
+extern "C" {
+	long Get_System_Tick_Count(void);
+	long Get_User_Tick_Count(void);
+	void far Timer_Interrupt_Func(void);
+//	long Get_Num_Interrupts(unsigned int realmode);
+	void Disable_Timer_Interrupt(void);
+	void Enable_Timer_Interrupt(void);
+}
+
+/*=========================================================================*/
+/* The following prototypes are for the file: TIMER.CPP							*/
+/*=========================================================================*/
+BOOL Init_Timer_System(unsigned int freq, int partial = FALSE);
+BOOL Remove_Timer_System(VOID);
+
+
+#endif // TIMER_H
+
+