bugfix [#23423] Multi-window : closing game windows cause blender crash

detect closing window while the BGE runs and exit without crashing, as if Esc was pressed.

source/blender/editors/space_view3d/view3d_view.c

@@ -35,6 +35,7 @@
 
 #include "BLI_math.h"
 #include "BLI_rect.h"
+#include "BLI_listbase.h"
 
 #include "BKE_anim.h"
 #include "BKE_action.h"
@@ -1629,9 +1630,8 @@ void VIEW3D_OT_localview(wmOperatorType *ot)
 #ifdef WITH_GAMEENGINE
 
 static ListBase queue_back;
-static void SaveState(bContext *C)
+static void SaveState(bContext *C, wmWindow *win)
 {
-	wmWindow *win= CTX_wm_window(C);
 	Object *obact = CTX_data_active_object(C);
 	
 	glPushAttrib(GL_ALL_ATTRIB_BITS);
@@ -1646,9 +1646,8 @@ static void SaveState(bContext *C)
 	//XXX waitcursor(1);
 }
 
-static void RestoreState(bContext *C)
+static void RestoreState(bContext *C, wmWindow *win)
 {
-	wmWindow *win= CTX_wm_window(C);
 	Object *obact = CTX_data_active_object(C);
 	
 	if(obact && obact->mode & OB_MODE_TEXTURE_PAINT)
@@ -1662,7 +1661,8 @@ static void RestoreState(bContext *C)
 	//XXX waitcursor(0);
 	//XXX G.qual= 0;
 	
-	win->queue= queue_back;
+	if(win) /* check because closing win can set to NULL */
+		win->queue= queue_back;
 	
 	GPU_state_init();
 	GPU_set_tpage(NULL, 0);
@@ -1809,16 +1809,25 @@ static int game_engine_exec(bContext *C, wmOperator *op)
 	}
 
 
-	SaveState(C);
+	SaveState(C, prevwin);
 
 	StartKetsjiShell(C, ar, &cam_frame, 1);
+
+	/* window wasnt closed while the BGE was running */
+	if(BLI_findindex(&CTX_wm_manager(C)->windows, prevwin) == -1) {
+		prevwin= NULL;
+		CTX_wm_window_set(C, NULL);
+	}
 	
-	/* restore context, in case it changed in the meantime, for
-	   example by working in another window or closing it */
-	CTX_wm_region_set(C, prevar);
-	CTX_wm_window_set(C, prevwin);
-	CTX_wm_area_set(C, prevsa);
-	RestoreState(C);
+	if(prevwin) {
+		/* restore context, in case it changed in the meantime, for
+		   example by working in another window or closing it */
+		CTX_wm_region_set(C, prevar);
+		CTX_wm_window_set(C, prevwin);
+		CTX_wm_area_set(C, prevsa);
+	}
+
+	RestoreState(C, prevwin);
 
 	//XXX restore_all_scene_cfra(scene_cfra_store);
 	set_scene_bg(CTX_data_main(C), startscene);

source/gameengine/BlenderRoutines/BL_KetsjiEmbedStart.cpp

@@ -417,7 +417,7 @@ extern "C" void StartKetsjiShell(struct bContext *C, struct ARegion *ar, rcti *c
 					exitrequested = ketsjiengine->GetExitCode();
 					
 					// kick the engine
-					bool render = ketsjiengine->NextFrame(); // XXX 2.5 Bug, This is never true! FIXME-  Campbell
+					bool render = ketsjiengine->NextFrame();
 					
 					if (render)
 					{
@@ -456,6 +456,9 @@ extern "C" void StartKetsjiShell(struct bContext *C, struct ARegion *ar, rcti *c
 						wm_event_free(event);
 					}
 					
+					if(win != CTX_wm_window(C)) {
+						exitrequested= KX_EXIT_REQUEST_OUTSIDE; /* window closed while bge runs */
+					}
 				}
 				printf("Blender Game Engine Finished\n");
 				exitstring = ketsjiengine->GetExitString();
@@ -506,8 +509,11 @@ extern "C" void StartKetsjiShell(struct bContext *C, struct ARegion *ar, rcti *c
 			startscene->camera= tmp_camera;
 		}
 
-		// set the cursor back to normal
-		canvas->SetMouseState(RAS_ICanvas::MOUSE_NORMAL);
+		if(exitrequested != KX_EXIT_REQUEST_OUTSIDE)
+		{
+			// set the cursor back to normal
+			canvas->SetMouseState(RAS_ICanvas::MOUSE_NORMAL);
+		}
 		
 		// clean up some stuff
 		if (ketsjiengine)

source/gameengine/BlenderRoutines/KX_BlenderGL.cpp

@@ -77,15 +77,6 @@ extern "C" {
 }
 
 /* end of blender block */
-
-/* was in drawmesh.c */
-void spack(unsigned int ucol)
-{
-	char *cp= (char *)&ucol;
-        
-	glColor3ub(cp[3], cp[2], cp[1]);
-}
-
 void BL_warp_pointer(wmWindow *win, int x,int y)
 {
 	WM_cursor_warp(win, x, y);

source/gameengine/Ketsji/KX_KetsjiEngine.cpp

@@ -946,6 +946,14 @@ int KX_KetsjiEngine::GetExitCode()
 		if (m_scenes.begin()==m_scenes.end())
 			m_exitcode = KX_EXIT_REQUEST_NO_SCENES_LEFT;
 	}
+	
+	// check if the window has been closed.
+	if(!m_exitcode)
+	{
+		//if(!m_canvas->Check()) {
+		//	m_exitcode = KX_EXIT_REQUEST_OUTSIDE;
+		//}
+	}
 
 	return m_exitcode;
 }