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engines/twp/lighting.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_LIGHTING_H
+#define TWP_LIGHTING_H
+
+#include "twp/gfx.h"
+#include "twp/spritesheet.h"
+
+#define MAX_LIGHTS 50
+
+namespace Twp {
+
+struct Lights;
+
+class Lighting : public Shader {
+public:
+	Lighting();
+	virtual ~Lighting();
+
+	void setSpriteOffset(const Math::Vector2d &offset);
+	void setSpriteSheetFrame(const SpriteSheetFrame &frame, const Texture &getNumTextures, bool flipX);
+
+	void update(const Lights &lights);
+
+private:
+	virtual void applyUniforms() final;
+
+public:
+	Math::Vector2d _contentSize;
+	Math::Vector2d _spriteOffset;
+	Math::Vector2d _spritePosInSheet;
+	Math::Vector2d _spriteSizeRelToSheet;
+
+	bool _debug = false; // if true change the way we draw the lights to debug them easily
+	Color _ambientLight; // Ambient light color
+	int u_numberLights = 0;
+	float u_lightPos[3 * MAX_LIGHTS];
+	float u_coneDirection[2 * MAX_LIGHTS];
+	float u_coneCosineHalfConeAngle[MAX_LIGHTS];
+	float u_coneFalloff[MAX_LIGHTS];
+	float u_lightColor[3 * MAX_LIGHTS];
+	float u_brightness[MAX_LIGHTS];
+	float u_cutoffRadius[MAX_LIGHTS];
+	float u_halfRadius[MAX_LIGHTS];
+
+private:
+	bool _currentDebug = false;
+};
+
+} // namespace Twp
+
+#endif