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engines/hpl1/engine/graphics/Renderer2D.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/>.
+ *
+ */
+
+/*
+ * Copyright (C) 2006-2010 - Frictional Games
+ *
+ * This file is part of HPL1 Engine.
+ */
+
+#ifndef HPL_RENDERER2D_H
+#define HPL_RENDERER2D_H
+
+#include "common/list.h"
+#include "hpl1/engine/graphics/GraphicsTypes.h"
+#include "hpl1/engine/graphics/Material.h"
+#include "hpl1/engine/graphics/Mesh2d.h"
+#include "hpl1/engine/math/MathTypes.h"
+#include "hpl1/engine/scene/Light2D.h"
+#include "hpl1/std/multiset.h"
+#include "hpl1/std/set.h"
+
+namespace hpl {
+
+#define MAX_SHADOW_POINTS (100)
+#define MAX_ONSCREEN_SHADOWCASTERS (100)
+
+class cScene;
+class cResources;
+class iLowLevelGraphics;
+class LowLevelResources;
+class cRenderObject2D;
+class cGraphicsDrawer;
+class cCamera2D;
+class cGridMap2D;
+class iTexture;
+
+// For Normal obejcts:
+class cRenderObject2DCompare {
+public:
+	bool operator()(const cRenderObject2D &aObjectA, const cRenderObject2D &aObjectB) const;
+};
+
+// For transparent objects
+class cRenderTransObjectCompare {
+public:
+	bool operator()(const cRenderObject2D &aObjectA, const cRenderObject2D &aObjectB) const;
+};
+
+typedef Hpl1::Std::multiset<cRenderObject2D, cRenderObject2DCompare> tRenderObjectSet;
+typedef tRenderObjectSet::iterator tRenderObjectSetIt;
+
+typedef Hpl1::Std::multiset<cRenderObject2D, cRenderTransObjectCompare> tRenderTransObjectSet;
+typedef tRenderTransObjectSet::iterator tRenderTransObjectSetIt;
+
+typedef Common::List<cRenderObject2D> tRenderObjectList;
+typedef tRenderObjectList::iterator tRenderObjectListIt;
+
+class cResources;
+class cWorld2D;
+
+class cRenderer2D {
+public:
+	cRenderer2D(iLowLevelGraphics *apLowLevelGraphics, cResources *apResources, cGraphicsDrawer *apGraphicsDrawer);
+	~cRenderer2D();
+
+	void RenderObjects(cCamera2D *apCamera, cGridMap2D *apMapLights, cWorld2D *apWorld);
+	void AddObject(cRenderObject2D &aObject);
+
+	void SetShadowZ(float afZ) { mfShadowZ = afZ; }
+	float GetShadowZ() { return mfShadowZ; }
+
+	void SetAmbientLight(cColor aCol) { mAmbientLight = aCol; }
+	cColor GetAmbientLight() { return mAmbientLight; }
+
+	iTexture *GetLightMap(int alNum) {
+		if (alNum < 0 || alNum > 1)
+			return NULL;
+		return mpLightMap[alNum];
+	}
+
+private:
+	iLowLevelGraphics *mpLowLevelGraphics;
+	LowLevelResources *mpLowLevelResources;
+	cResources *mpResources;
+	cGraphicsDrawer *mpGraphicsDrawer;
+
+	tRenderObjectSet m_mapObject;
+	tRenderTransObjectSet m_mapTransObject;
+
+	/////// LIGHTING  ///////////////////////
+	iTexture *mpLightMap[2];
+
+	cColor mAmbientLight;
+
+	cRect2f mPrevLightRect;
+
+	int mvShadowPoints[MAX_SHADOW_POINTS][2];
+	int mlShadowPointSize;
+
+	float mfShadowZ;
+
+	tLightList mlstLights;
+	tLightList mlstFastLights;
+
+	//////// RENDERING ///////////////////////
+	void ClearShadows();
+	bool RenderShadows(cCamera2D *apCamera, iLight2D *pLight, cWorld2D *apWorld);
+
+	inline void RenderObject(const cRenderObject2D &aObject, unsigned int &aIdxAdd, iMaterial *pMat,
+							 iLight2D *pLight, eMaterialRenderType aRenderType, cCamera2D *apCam);
+
+	/////// LIGHTING  ///////////////////////
+
+	inline cVector2f CalcLineEnd(cVector3f avLight, cVector3f avPoint, float afRadius,
+								 cVector2f &avSide, cVector2f avClipPos);
+
+	inline void FindShadowPoints(tMesh2DEdgeVec *apEdgeVec, cVector2f avLightPos, cVector2f avTilePos);
+
+	inline int CreateVertexes(cVector2f vLightPos, cRect2f LightRect, float fRadius, bool bNonFit,
+							  cVector2f vTilePos, tVertexVec *apVtxVec, cColor ShadowColor, int lFirstIndex, float fSourceSize);
+
+	inline bool ClipPoints(cVector3f *avPoint, cRect2f aRect, cVector2f avPos, float afSize);
+};
+
+} // namespace hpl
+
+#endif // HPL_RENDERER2D_H