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engines/myst3/effects.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 EFFECTS_H_
+#define EFFECTS_H_
+
+#include "common/hashmap.h"
+#include "common/rect.h"
+
+#include "engines/myst3/archive.h"
+
+namespace Graphics {
+struct Surface;
+}
+
+namespace Myst3 {
+
+class Myst3Engine;
+
+class Effect {
+public:
+	struct FaceMask {
+		FaceMask();
+		~FaceMask();
+
+		static Common::Rect getBlockRect(uint x, uint y);
+
+		Graphics::Surface *surface;
+		bool block[10][10];
+	};
+
+	virtual ~Effect();
+
+	virtual bool update() = 0;
+	virtual void applyForFace(uint face, Graphics::Surface *src, Graphics::Surface *dst) = 0;
+
+	bool hasFace(uint face) { return _facesMasks.contains(face); }
+	Common::Rect getUpdateRectForFace(uint face);
+
+	// Public and static for use by the debug console
+	static FaceMask *loadMask(Common::SeekableReadStream *maskStream);
+
+protected:
+	Effect(Myst3Engine *vm);
+
+	bool loadMasks(const Common::String &room, uint32 id, Archive::ResourceType type);
+
+	Myst3Engine *_vm;
+
+	typedef Common::HashMap<uint, FaceMask *> FaceMaskMap;
+	FaceMaskMap _facesMasks;
+};
+
+class WaterEffect : public Effect {
+public:
+	static WaterEffect *create(Myst3Engine *vm, uint32 id);
+	virtual ~WaterEffect();
+
+	bool update();
+	void applyForFace(uint face, Graphics::Surface *src, Graphics::Surface *dst);
+
+protected:
+	WaterEffect(Myst3Engine *vm);
+
+	void doStep(float position, bool isFrame);
+	void apply(Graphics::Surface *src, Graphics::Surface *dst, Graphics::Surface *mask,
+			bool bottomFace, int32 waterEffectAmpl);
+
+	uint32 _lastUpdate;
+	int32 _step;
+
+	int8 _bottomDisplacement[640];
+	int8 _verticalDisplacement[640];
+	int8 _horizontalDisplacements[5][640];
+
+private:
+	bool isRunning();
+};
+
+class LavaEffect : public Effect {
+public:
+	static LavaEffect *create(Myst3Engine *vm, uint32 id);
+	virtual ~LavaEffect();
+
+	bool update();
+	void applyForFace(uint face, Graphics::Surface *src, Graphics::Surface *dst);
+
+protected:
+	LavaEffect(Myst3Engine *vm);
+
+	void doStep(int32 position, float ampl);
+
+	uint32 _lastUpdate;
+	int32 _step;
+
+	int32 _displacement[256];
+};
+
+class MagnetEffect : public Effect {
+public:
+	static MagnetEffect *create(Myst3Engine *vm, uint32 id);
+	virtual ~MagnetEffect();
+
+	bool update();
+	void applyForFace(uint face, Graphics::Surface *src, Graphics::Surface *dst);
+
+protected:
+	MagnetEffect(Myst3Engine *vm);
+
+	void apply(Graphics::Surface *src, Graphics::Surface *dst, Graphics::Surface *mask, int32 position);
+
+	int32 _lastSoundId;
+	Common::SeekableReadStream *_shakeStrength;
+
+	uint32 _lastTime;
+	float _position;
+	float _lastAmpl;
+	int32 _verticalDisplacement[256];
+};
+
+class ShakeEffect : public Effect {
+public:
+	static ShakeEffect *create(Myst3Engine *vm);
+	virtual ~ShakeEffect();
+
+	bool update();
+	void applyForFace(uint face, Graphics::Surface *src, Graphics::Surface *dst);
+
+	float getPitchOffset() { return _pitchOffset; }
+	float getHeadingOffset() { return _headingOffset; }
+
+protected:
+	ShakeEffect(Myst3Engine *vm);
+
+	uint32 _lastTick;
+	uint _magnetEffectShakeStep;
+	float _pitchOffset;
+	float _headingOffset;
+
+};
+
+class RotationEffect : public Effect {
+public:
+	static RotationEffect *create(Myst3Engine *vm);
+	virtual ~RotationEffect();
+
+	bool update();
+	void applyForFace(uint face, Graphics::Surface *src, Graphics::Surface *dst);
+
+	float getHeadingOffset() { return _headingOffset; }
+
+protected:
+	RotationEffect(Myst3Engine *vm);
+
+	uint32 _lastUpdate;
+	float _headingOffset;
+
+};
+
+class ShieldEffect : public Effect {
+public:
+	static ShieldEffect *create(Myst3Engine *vm, uint32 id);
+	virtual ~ShieldEffect();
+
+	bool update();
+	void applyForFace(uint face, Graphics::Surface *src, Graphics::Surface *dst);
+
+protected:
+	ShieldEffect(Myst3Engine *vm);
+	bool loadPattern();
+
+	uint32 _lastTick;
+	float _amplitude;
+	float _amplitudeIncrement;
+
+	uint8 _pattern[4096];
+	int32 _displacement[256];
+};
+
+} // End of namespace Myst3
+
+#endif // EFFECTS_H_