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engines/twp/thread.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 TWP_THREAD_H
+#define TWP_THREAD_H
+
+#include "common/array.h"
+#include "common/str.h"
+#include "twp/squirrel/squirrel.h"
+
+namespace Twp {
+
+class ThreadBase {
+public:
+	virtual ~ThreadBase() {}
+
+	void pause() {
+		if (_pauseable) {
+			_paused = true;
+			suspend();
+		}
+	}
+
+	void unpause() {
+		_paused = false;
+		resume();
+	}
+
+	void setName(const Common::String &name) { _name = name; }
+	Common::String getName() const { return _name; }
+
+	int getId() const { return _id; }
+	virtual HSQUIRRELVM getThread() = 0;
+
+	virtual bool isGlobal() = 0;
+	bool isSuspended();
+	bool isDead();
+
+	void suspend();
+	void resume();
+
+	virtual bool update(float elapsed) = 0;
+	virtual void stop() = 0;
+
+protected:
+public:
+	float _waitTime = 0.f;
+	int _numFrames = 0;
+	bool _paused = false;
+	bool _pauseable = false;
+	uint32 _lastUpdateTime = 0;
+
+protected:
+	int _id = 0;
+	Common::String _name;
+	bool _stopRequest = false;
+	bool _stopped = false;
+};
+
+class Thread final : public ThreadBase {
+public:
+	Thread(const Common::String &name, bool global, HSQOBJECT threadObj, HSQOBJECT envObj, HSQOBJECT closureObj, const Common::Array<HSQOBJECT> args);
+	virtual ~Thread() override final;
+
+	virtual bool isGlobal() override final { return _global; }
+	virtual HSQUIRRELVM getThread() override final { return _threadObj._unVal.pThread; }
+
+	bool call();
+	virtual bool update(float elapsed) override final;
+	virtual void stop() override final;
+
+public:
+	bool _global = false;
+	HSQOBJECT _threadObj, _envObj, _closureObj;
+	Common::Array<HSQOBJECT> _args;
+};
+
+enum CutsceneState {
+	csStart,
+	csCheckEnd,
+	csOverride,
+	csCheckOverride,
+	csEnd,
+	csQuit
+};
+
+class Object;
+class Cutscene final : public ThreadBase {
+public:
+	Cutscene(const Common::String &name, int parentThreadId, HSQOBJECT threadObj, HSQOBJECT closure, HSQOBJECT closureOverride, HSQOBJECT envObj);
+	~Cutscene() override final;
+
+	void start();
+	bool isGlobal() override final { return false; }
+	HSQUIRRELVM getThread() override final;
+	bool update(float elapsed) override final;
+	void stop() override final;
+
+	bool hasOverride() const;
+	void cutsceneOverride();
+	bool isStopped();
+
+	void setInputState(InputStateFlag state) { _inputState = state; }
+	void setShowCursor(bool state) { _showCursor = state; }
+
+private:
+	void checkEndCutscene();
+	void checkEndCutsceneOverride();
+	void doCutsceneOverride();
+
+private:
+	int _parentThreadId = 0;
+	HSQOBJECT _threadObj, _closure, _closureOverride, _envObj;
+	CutsceneState _state;
+	bool _showCursor = false;
+	InputStateFlag _inputState = (InputStateFlag)0;
+	Common::SharedPtr<Object> _actor;
+};
+
+} // namespace Twp
+
+#endif