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engines/ultima/ultima8/kernel/kernel.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_KERNEL_KERNEL_H
+#define ULTIMA8_KERNEL_KERNEL_H
+
+#include "ultima/shared/std/containers.h"
+#include "ultima/shared/std/string.h"
+#include "ultima/ultima8/usecode/intrinsics.h"
+
+namespace Ultima {
+namespace Ultima8 {
+
+class Debugger;
+class Process;
+class idMan;
+
+typedef Process *(*ProcessLoadFunc)(Common::ReadStream *rs, uint32 version);
+typedef Std::list<Process *>::const_iterator ProcessIter;
+typedef Std::list<Process *>::iterator ProcessIterator;
+
+
+class Kernel {
+	friend class Debugger;
+public:
+	Kernel();
+	~Kernel();
+
+	static Kernel *get_instance() {
+		return _kernel;
+	}
+
+	void reset();
+
+	// returns pid of new process
+	ProcId addProcess(Process *proc, bool dispose = true);
+
+	//! add a process and run it immediately
+	//! \return pid of process
+	ProcId addProcessExec(Process *proc, bool dispose = true);
+
+	void runProcesses();
+	Process *getProcess(ProcId pid);
+
+	ProcId assignPID(Process *proc);
+
+	void setNextProcess(Process *proc);
+	Process *getRunningProcess() const {
+		return _runningProcess;
+	}
+
+	// objid = 0 means any object, type = 6 means any type
+	uint32 getNumProcesses(ObjId objid, uint16 processtype);
+
+	//! find a (any) process of the given objid, processtype
+	Process *findProcess(ObjId objid, uint16 processtype);
+
+	//! kill (fail) processes of a certain object and/or of a certain type
+	//! \param objid the object, or 0 for any object (except objid 0)
+	//! \param type the type, or 6 for any type
+	//! \param fail if true, fail the processes instead of terminating them
+	void killProcesses(ObjId objid, uint16 processtype, bool fail);
+
+	//! kill (fail) processes of a certain object and not of a certain type
+	//! \param objid the object, or 0 for any object (except objid 0)
+	//! \param type the type not to kill
+	//! \param fail if true, fail the processes instead of terminating them
+	void killProcessesNotOfType(ObjId objid, uint16 processtype, bool fail);
+
+	//! kill (fail) processes not of a certain type, regardless of object ID
+	//! except for the current running process (for switching levels in Crusader)
+	//! \param type the type not to kill
+	//! \param fail if true, fail the processes instead of terminating them
+	void killAllProcessesNotOfTypeExcludeCurrent(uint16 processtype, bool fail);
+
+	//! get an iterator of the process list.
+	ProcessIter getProcessBeginIterator() {
+		return _processes.begin();
+	}
+	ProcessIter getProcessEndIterator() {
+		return _processes.end();
+	}
+
+	void kernelStats();
+	void processTypes();
+
+	bool canSave();
+	void save(Common::WriteStream *ws);
+	bool load(Common::ReadStream *rs, uint32 version);
+
+	void pause() {
+		_paused++;
+	}
+	void unpause() {
+		if (_paused > 0)
+			_paused--;
+	}
+	bool isPaused() const {
+		return _paused > 0;
+	}
+
+	void setFrameByFrame(bool fbf) {
+		_frameByFrame = fbf;
+	}
+	bool isFrameByFrame() const {
+		return _frameByFrame;
+	}
+
+	void addProcessLoader(Std::string classname, ProcessLoadFunc func) {
+		_processLoaders[classname] = func;
+	}
+
+	uint32 getFrameNum() const {
+		return _tickNum / TICKS_PER_FRAME;
+	};
+	uint32 getTickNum() const {
+		return _tickNum;
+	};
+
+	static const uint32 TICKS_PER_FRAME;
+	static const uint32 TICKS_PER_SECOND;
+	static const uint32 FRAMES_PER_SECOND;
+
+	// A special process type which means kill all the processes.
+	static const uint16 PROC_TYPE_ALL;
+
+	INTRINSIC(I_getNumProcesses);
+	INTRINSIC(I_resetRef);
+private:
+	Process *loadProcess(Common::ReadStream *rs, uint32 version);
+
+	Std::list<Process *> _processes;
+	idMan   *_pIDs;
+
+	Std::list<Process *>::iterator _currentProcess;
+
+	Common::HashMap<Common::String, ProcessLoadFunc> _processLoaders;
+
+	bool _loading;
+
+	uint32 _tickNum;
+	unsigned int _paused;
+	bool _frameByFrame;
+
+	Process *_runningProcess;
+
+	static Kernel *_kernel;
+};
+
+} // End of namespace Ultima8
+} // End of namespace Ultima
+
+#endif