Initial Source Code commit

Initial commit of original Tiberian Dawn and Red Alert source code converted to build as DLLs, and compatible with the release version of Command & Conquer Remastered.

TIBERIANDAWN/KEYFBUFF.INC

@@ -0,0 +1,39 @@
+;
+; Copyright 2020 Electronic Arts Inc.
+;
+; TiberianDawn.DLL and RedAlert.dll and corresponding source code 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.
+
+; TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed 
+; in the hope that it will be useful, but with permitted additional restrictions 
+; under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT 
+; distributed with this program. You should have received a copy of the 
+; GNU General Public License along with permitted additional restrictions 
+; with this program. If not, see [https://github.com/electronicarts/CnC_Remastered_Collection]>.
+
+
+
+;**************************************************************
+;
+; Macro to fetch the header of the next line and jump to the appropriate routine
+;
+next_line	macro
+
+		add	edi,[dest_adjust_width]		;add in dest modulo
+		dec	edx				;line counter
+		jz	real_out			;return
+		mov	ecx,[save_ecx]			;ecx is pixel count
+		mov	eax,[header_pointer]		;ptr to next header byte
+		mov	al,[eax]
+		inc	[header_pointer]
+		and	eax,BLIT_ALL			;Make sure we dont jump to some spurious address
+							; if the header is wrong then its better to draw with the wrong
+							; shape routine than to die
+		shl	eax,2
+		add	eax,[ShapeJumpTableAddress]	;get the address to jump to
+		jmp	[dword eax]			;do the jump
+
+		endm
+