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/imsapi.cpp

@@ -0,0 +1,124 @@
+#include <stdio.h>
+#include "i_video.h"
+#include "common.h"
+#include "ptrapi.h"
+#include "imsapi.h"
+#include "kbdapi.h"
+#include "joyapi.h"
+
+/***************************************************************************
+IMS_StartAck () - Starts up checking for a happening
+ ***************************************************************************/
+void 
+IMS_StartAck(
+    void
+)
+{
+    KBD_Clear();
+    
+    mouse_b1_ack = 0;
+    mouse_b2_ack = 0;
+    mouse_b3_ack = 0;
+    kbd_ack = 0;
+    joy_ack = 0;
+}
+
+/***************************************************************************
+IMS_CheckAck () - Tells if something has happend since last IMS_StartAck
+ ***************************************************************************/
+int 
+IMS_CheckAck(
+    void
+)                                 
+{
+    I_GetEvent();
+    int rval;
+    rval = 0;
+    
+    if (mouse_b1_ack)
+        rval = 1;
+    
+    if (mouse_b2_ack)
+        rval = 1;
+    
+    if (kbd_ack)
+        rval = 1;
+    
+    if (joy_ack)
+        rval = 1;
+    
+    return rval;
+}
+
+/***************************************************************************
+IMS_IsAck() - Returns TRUE if ptr button or key pressed
+ ***************************************************************************/
+int 
+IMS_IsAck(
+    void
+)
+{
+    I_GetEvent();
+    
+    if (Up || Down || Left || Right || Start || Back || LeftShoulder || RightShoulder || AButton || BButton || XButton || YButton)
+    {
+        return 1;
+    }
+    
+    if (lastscan)
+    {
+        lastscan = 0;
+        return 1;
+    }
+    
+    if (mouseb1 || mouseb2 || mouseb3)
+        return 1;
+    
+    return 0;
+}
+
+/***************************************************************************
+IMS_WaitTimed() - Wait for aprox secs
+ ***************************************************************************/
+int                        // RETURN: keypress (lastscan)
+IMS_WaitTimed(
+    int secs               // INPUT : seconds to wait
+)
+{
+    int loop, hold, rval;
+    rval = 0;
+    lastscan = 0;
+    
+    IMS_StartAck();
+    
+    while (secs > 0)
+    {
+        for (loop = 0; loop < 55; loop++)
+        {
+            hold = GFX_GetFrameCount();
+            while (GFX_GetFrameCount() == hold)
+            {
+                I_GetNeedResize(false);
+            }
+            
+            if (IMS_CheckAck())
+            {
+                rval = 1;
+                goto end_func;
+            }
+        }
+        I_GetNeedResize(false);
+        secs--;
+    }
+
+end_func:
+    loop = 100;
+    while (IMS_IsAck())
+    {
+        loop--;
+    }
+    
+    IMS_StartAck();
+    
+    return rval;
+}