Vendor raptor source files (was embedded gitlink)

Tree vendored at upstream 0019c5dd; origin + license recorded in
raptor/VENDOR.txt. Windows SDL dev packages excluded via .gitignore.

raptor/src/i_lastscr.cpp

@@ -0,0 +1,86 @@
+//
+// Copyright(C) 2005-2014 Simon Howard
+//
+// 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 2
+// 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.
+//
+// DESCRIPTION:
+//    Exit text-mode ENDOOM screen.
+//
+
+
+#include <stdio.h>
+#include <string.h>
+
+#include "rap.h"
+#include "i_lastscr.h"
+#include "textscreen.h"
+#include "i_video.h"
+#include "joyapi.h"
+#include "kbdapi.h"
+#include "ptrapi.h"
+#include "imsapi.h"
+
+#define LASTSCR_W 80
+#define LASTSCR_H 25
+
+
+// 
+// Displays the text mode ending screen after the game quits
+//
+void I_LASTSCR(char* mem)
+{
+    unsigned char* screendata;
+    int y;
+    int indent;
+
+    TXT_Fullscreen(txt_fullscreen);
+    
+    // Set up text mode screen
+
+    TXT_Init();
+
+    TXT_SetWindowTitle("Raptor");
+    // SDL2-TODO I_InitWindowTitle();
+    // SDL2-TODO I_InitWindowIcon();
+
+    // Write the data to the screen memory
+
+    screendata = TXT_GetScreenData();
+
+    indent = (LASTSCR_W - TXT_SCREEN_W) / 2;
+
+    for (y = 0; y < TXT_SCREEN_H; ++y)
+    {
+        memcpy(screendata + (y * TXT_SCREEN_W * 2),
+            mem + (y * LASTSCR_W + indent) * 2,
+            TXT_SCREEN_W * 2);
+    }
+
+    // Wait for a keypress
+
+    IMS_StartAck();
+    I_Settextmode(true);
+
+    while (true)
+    {
+        TXT_UpdateScreen();
+        I_GetEvent();
+
+        if (joy_ack || kbd_ack || mouse_b1_ack || mouse_b2_ack || mouse_b3_ack)
+            break;
+
+        TXT_Sleep(0);
+    }
+
+    // Shut down text mode screen
+
+    TXT_Shutdown();
+}