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engines/bladerunner/light.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 BLADERUNNER_LIGHT_H
+#define BLADERUNNER_LIGHT_H
+
+#include "bladerunner/matrix.h"
+#include "bladerunner/color.h"
+
+#include "common/stream.h"
+
+namespace Common{
+class ReadStream;
+}
+
+namespace BladeRunner {
+
+class Lights;
+
+class Light {
+	friend class Debugger;
+	friend class Lights;
+	friend class SliceRenderer;
+
+protected:
+	Common::String _name;
+
+	int       _frameCount;
+	int       _animated;
+	int       _animatedParameters;
+	Matrix4x3 _matrix;
+	Color     _color;
+	float     _falloffStart;
+	float     _falloffEnd;
+	float     _angleStart;
+	float     _angleEnd;
+	float    *_animationData;
+	float    *_m11ptr;
+	float    *_m12ptr;
+	float    *_m13ptr;
+	float    *_m14ptr;
+	float    *_m21ptr;
+	float    *_m22ptr;
+	float    *_m23ptr;
+	float    *_m24ptr;
+	float    *_m31ptr;
+	float    *_m32ptr;
+	float    *_m33ptr;
+	float    *_m34ptr;
+	float    *_colorRPtr;
+	float    *_colorGPtr;
+	float    *_colorBPtr;
+	float    *_falloffStartPtr;
+	float    *_falloffEndPtr;
+	float    *_angleStartPtr;
+	float    *_angleEndPtr;
+
+public:
+	Light();
+	virtual ~Light();
+
+	void read(Common::ReadStream *stream, int frameCount, int frame, int animated);
+	void readVqa(Common::ReadStream *stream, int frameCount, int frame, int animated);
+
+	void setupFrame(int frame);
+
+	virtual float calculate(Vector3 start, Vector3 end) const;
+	virtual void calculateColor(Color *outColor, Vector3 position) const;
+
+protected:
+	float calculateFalloutCoefficient(Vector3 start, Vector3 end, float a3, float a4) const;
+	float attenuation(float min, float max, float distance) const;
+};
+
+class Light1 : public Light {
+	float calculate(Vector3 start, Vector3 end) const override;
+	void calculateColor(Color *outColor, Vector3 position) const override;
+};
+
+class Light2 : public Light {
+	float calculate(Vector3 start, Vector3 end) const override;
+	void calculateColor(Color *outColor, Vector3 position) const override;
+};
+
+class Light3 : public Light {
+	void calculateColor(Color *outColor, Vector3 position) const override;
+};
+
+class Light4 : public Light {
+	void calculateColor(Color *outColor, Vector3 position) const override;
+};
+
+class LightAmbient : public Light {
+	float calculate(Vector3 start, Vector3 end) const override;
+	void calculateColor(Color *outColor, Vector3 position) const override;
+};
+
+} // End of namespace BladeRunner
+
+#endif