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engines/ags/engine/ac/dynobj/script_overlay.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 3 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "ags/engine/ac/dynobj/script_overlay.h"
+#include "ags/engine/ac/dynobj/dynobj_manager.h"
+#include "ags/shared/ac/common.h"
+#include "ags/shared/util/stream.h"
+#include "ags/engine/ac/overlay.h"
+#include "ags/engine/ac/runtime_defines.h"
+#include "ags/engine/ac/screen_overlay.h"
+#include "ags/engine/debugging/debug_log.h"
+#include "ags/globals.h"
+
+namespace AGS3 {
+
+using namespace AGS::Shared;
+
+int ScriptOverlay::Dispose(void * /*address*/, bool force) {
+	// since the managed object is being deleted, remove the
+	// reference so it doesn't try and dispose something else
+	// with that handle later
+	if (overlayId >= 0) {
+		auto *over = get_overlay(overlayId);
+		if (over) {
+			over->associatedOverlayHandle = 0;
+		}
+	}
+
+	// if this is being removed voluntarily (ie. pointer out of
+	// scope) then remove the associateed overlay
+	// Otherwise, it's a Restore Game or something so don't
+	if ((!force) && (Overlay_GetValid(this))) {
+		Remove();
+	}
+
+	delete this;
+	return 1;
+}
+
+const char *ScriptOverlay::GetType() {
+	return "Overlay";
+}
+
+size_t ScriptOverlay::CalcSerializeSize(const void * /*address*/) {
+	return sizeof(int32_t) * 4;
+}
+
+void ScriptOverlay::Serialize(const void * /*address*/, Stream *out) {
+	out->WriteInt32(overlayId);
+	out->WriteInt32(0); // unused (was text window x padding)
+	out->WriteInt32(0); // unused (was text window y padding)
+	out->WriteInt32(0); // unused (was internal ref flag)
+}
+
+void ScriptOverlay::Unserialize(int index, Stream *in, size_t data_sz) {
+	overlayId = in->ReadInt32();
+	in->ReadInt32(); // unused (was text window x padding)
+	in->ReadInt32(); // unused (was text window y padding)
+	in->ReadInt32(); // unused (was internal ref flag)
+	ccRegisterUnserializedObject(index, this, this);
+}
+
+void ScriptOverlay::Remove() {
+	if (overlayId < 0) {
+		debug_script_warn("Overlay.Remove: overlay is invalid, could have been removed earlier.");
+		return;
+	}
+	remove_screen_overlay(overlayId);
+	overlayId = -1;
+}
+
+} // namespace AGS3