Fix map glitch crash w/ interpolation

Fixes #2513

include/d/d_menu_window.h

@@ -35,6 +35,10 @@ void dMw_offPauseWindow();
 void dMw_onMenuRing();
 void dMw_offMenuRing();
 
+#if TARGET_PC
+bool dMw_isCapturePending();
+#endif
+
 class dDlst_MENU_CAPTURE_c;
 
 class dMw_c : public msg_class {

src/d/d_menu_window.cpp

@@ -215,6 +215,14 @@ void dMw_offMenuRing() {
     }
 }
 
+#if TARGET_PC
+bool dMw_isCapturePending() {
+    dMw_c* menuWindow = dMeter2Info_getMenuWindowClass();
+    return menuWindow != NULL && menuWindow->mpCapture != NULL &&
+           menuWindow->mpCapture->getDrawFlag() == 1;
+}
+#endif
+
 static BOOL dMw_isMenuRing() {
     dMw_c* menu_window = dMeter2Info_getMenuWindowClass();
     if (menu_window != NULL) {

src/m_Do/m_Do_main.cpp

@@ -23,6 +23,7 @@
 #include "d/d_s_menu.h"
 #include "d/d_s_play.h"
 #include "d/d_debug_pad.h"
+#include "d/d_menu_window.h"
 #include "f_ap/f_ap_game.h"
 #include "f_op/f_op_msg.h"
 #include "m_Do/m_Do_MemCard.h"
@@ -286,6 +287,10 @@ void main01(void) {
             if (timing.numSimTicks > 0) {
                 dusk::interp::begin_frame(0.0f);
                 for (int i = 0; i < timing.numSimTicks; ++i) {
+                    // When a capture is pending, it has to be painted before the next sim tick.
+                    if (dMw_isCapturePending()) {
+                        break;
+                    }
                     if (timing.interpolating) {
                         dusk::interp::begin_sim_tick();
                     }