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engines/ultima/ultima8/usecode/uc_process.h

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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/>.
+ *
+ */
+#ifndef ULTIMA8_USECODE_UCPROCESS_H
+#define ULTIMA8_USECODE_UCPROCESS_H
+
+#include "ultima/shared/std/containers.h"
+#include "ultima/ultima8/kernel/process.h"
+#include "ultima/ultima8/usecode/uc_stack.h"
+
+namespace Ultima {
+namespace Ultima8 {
+
+class Usecode;
+
+// probably won't inherit from Process directly in the future
+class UCProcess : public Process {
+	friend class UCMachine;
+	friend class Kernel;
+public:
+	UCProcess();
+	UCProcess(uint16 classid, uint16 offset, uint32 this_ptr = 0,
+	          int thissize = 0, const uint8 *args = 0, int argsize = 0);
+	~UCProcess() override;
+
+	ENABLE_RUNTIME_CLASSTYPE()
+
+	void run() override;
+
+	void terminate() override;
+
+	void freeOnTerminate(uint16 index, int type);
+
+	void setReturnValue(uint32 retval) {
+		_temp32 = retval;
+	}
+
+	uint16 getClassId() const {
+		return _classId;
+	}
+
+	Common::String dumpInfo() const override;
+
+	bool loadData(Common::ReadStream *rs, uint32 version);
+	void saveData(Common::WriteStream *ws) override;
+
+protected:
+	void load(uint16 classid, uint16 offset, uint32 this_ptr = 0,
+	          int thissize = 0, const uint8 *args = 0, int argsize = 0);
+	void call(uint16 classid, uint16 offset);
+	bool ret();
+
+	// stack base pointer
+	uint16 _bp;
+
+	Usecode *_usecode;
+
+	uint16 _classId;
+	uint16 _ip;
+
+	uint32 _temp32;
+
+	// data stack
+	UCStack _stack;
+
+	// "Free Me" list
+	Std::list<Common::Pair<uint16, int> > _freeOnTerminate;
+};
+
+} // End of namespace Ultima8
+} // End of namespace Ultima
+
+#endif