CnC_Remastered_Collection

Command and Conquer: Red Alert
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FACING.H (3931B)

      1 //
      2 // Copyright 2020 Electronic Arts Inc.
      3 //
      4 // TiberianDawn.DLL and RedAlert.dll and corresponding source code is free 
      5 // software: you can redistribute it and/or modify it under the terms of 
      6 // the GNU General Public License as published by the Free Software Foundation, 
      7 // either version 3 of the License, or (at your option) any later version.
      8 
      9 // TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed 
     10 // in the hope that it will be useful, but with permitted additional restrictions 
     11 // under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT 
     12 // distributed with this program. You should have received a copy of the 
     13 // GNU General Public License along with permitted additional restrictions 
     14 // with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
     15 
     16 /* $Header:   F:\projects\c&c\vcs\code\facing.h_v   1.14   16 Oct 1995 16:46:02   JOE_BOSTIC  $ */
     17 /*********************************************************************************************** 
     18  ***              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               *** 
     19  *********************************************************************************************** 
     20  *                                                                                             * 
     21  *                 Project Name : Command & Conquer                                            * 
     22  *                                                                                             * 
     23  *                    File Name : FACING.H                                                     * 
     24  *                                                                                             * 
     25  *                   Programmer : Joe L. Bostic                                                * 
     26  *                                                                                             * 
     27  *                   Start Date : 03/21/95                                                     * 
     28  *                                                                                             * 
     29  *                  Last Update : March 21, 1995 [JLB]                                         * 
     30  *                                                                                             * 
     31  *---------------------------------------------------------------------------------------------* 
     32  * Functions:                                                                                  * 
     33  * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
     34 
     35 #ifndef FACING_H
     36 #define FACING_H
     37 
     38 /*
     39 **	This is a general facing handler class. It is used in those cases where facing needs to be
     40 **	kept track of, but there could also be an associated desired facing. The current facing
     41 **	is supposed to transition to the desired state over time. Using this class facilitates this
     42 **	processing as well as isolating the rest of the code from the internals.
     43 */
     44 class FacingClass 
     45 {
     46 	public:
     47 		FacingClass(void);
     48 		FacingClass(DirType dir) {CurrentFacing = DesiredFacing = dir;};
     49 		operator DirType(void) const {return CurrentFacing;};
     50 
     51 		DirType Current(void) const {return CurrentFacing;};
     52 		DirType Desired(void) const {return DesiredFacing;};
     53 
     54 		int Set_Desired(DirType facing);
     55 		int Set_Current(DirType facing);
     56 
     57 		void Set(DirType facing) {
     58 			Set_Current(facing);
     59 			Set_Desired(facing);
     60 		};
     61 
     62 		DirType Get(void) const { return CurrentFacing; }
     63 
     64 		int Is_Rotating(void) const {return (DesiredFacing != CurrentFacing);};
     65 
     66 		int Difference(void) const {return (signed char)(*((unsigned char*)&DesiredFacing) - *((unsigned char*)&CurrentFacing));};
     67 		int Difference(DirType facing) const {return (signed char)(*((signed char*)&facing) - *((signed char*)&CurrentFacing));};
     68 		int Rotation_Adjust(int rate);
     69 
     70 	private:
     71 		DirType CurrentFacing;
     72 		DirType DesiredFacing;
     73 };
     74 
     75 
     76 #endif