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2020_03_31/Source/doom.cpp

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+#include "diablo.h"
+
+int doom_quest_time; // weak
+int doom_stars_drawn; // weak
+void *pDoomCel;
+int doomflag; // weak
+int DoomQuestState; // idb
+
+int doom_get_frame_from_time()
+{
+	int result; // eax
+
+	if ( DoomQuestState == 36001 )
+		result = 31;
+	else
+		result = DoomQuestState / 1200;
+	return result;
+}
+
+void doom_alloc_cel()
+{
+	pDoomCel = DiabloAllocPtr(229376);
+}
+
+void doom_cleanup()
+{
+	void *v0; // ecx
+
+	v0 = pDoomCel;
+	pDoomCel = 0;
+	mem_free_dbg(v0);
+}
+
+void doom_load_graphics()
+{
+	if ( doom_quest_time == 31 )
+	{
+		strcpy(tempstr, "Items\\Map\\MapZDoom.CEL");
+	}
+	else if ( doom_quest_time >= 10 )
+	{
+		sprintf(tempstr, "Items\\Map\\MapZ00%i.CEL", doom_quest_time);
+	}
+	else
+	{
+		sprintf(tempstr, "Items\\Map\\MapZ000%i.CEL", doom_quest_time);
+	}
+	LoadFileWithMem(tempstr, pDoomCel);
+}
+
+void doom_init()
+{
+	int v0; // eax
+
+	doomflag = 1;
+	doom_alloc_cel();
+	v0 = -(doom_get_frame_from_time() != 31);
+	_LOBYTE(v0) = v0 & 0xE1;
+	doom_quest_time = v0 + 31;
+	doom_load_graphics();
+}
+
+void doom_close()
+{
+	if ( doomflag )
+	{
+		doomflag = 0;
+		doom_cleanup();
+	}
+}
+
+void doom_draw()
+{
+	if ( doomflag )
+	{
+		if ( doom_quest_time != 31 && ++doom_stars_drawn >= 5 )
+		{
+			doom_stars_drawn = 0;
+			if ( ++doom_quest_time > doom_get_frame_from_time() )
+				doom_quest_time = 0;
+			doom_load_graphics();
+		}
+		CelDecodeOnly(64, 511, (BYTE *)pDoomCel, 1, 640);
+	}
+}