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engines/hpl1/engine/scene/Light2DPoint.cpp

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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.
+ */
+
+#include "hpl1/engine/scene/Light2DPoint.h"
+#include "hpl1/engine/graphics/LowLevelGraphics.h"
+
+namespace hpl {
+
+//////////////////////////////////////////////////////////////////////////
+// CONSTRUCTORS
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+cLight2DPoint::cLight2DPoint(tString asName) : iLight2D(asName) {
+	UpdateBoundingBox();
+}
+
+//-----------------------------------------------------------------------
+
+cLight2DPoint::~cLight2DPoint() {
+}
+
+//-----------------------------------------------------------------------
+
+//////////////////////////////////////////////////////////////////////////
+// PUBLIC METHODS
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+// TODO: Z might have to be some standard value...
+// Has 100 right now, this should be in some global value..
+int cLight2DPoint::Render(iLowLevelGraphics *apLowLevel, int alFirstIndex) {
+	// make the center vetrex:
+	cVector3f vTex(0);
+	cVector3f vPos;
+	cVector3f vLightPos = GetWorldPosition();
+	vLightPos.z = 100;
+	float fRadius = GetFarAttenuation();
+
+	cColor Col = GetDiffuseColor() * mfIntensity;
+	Col.a = 0;
+	cVertex Vtx = cVertex(vLightPos, vTex, Col);
+	apLowLevel->AddVertexToBatch(Vtx); // index 0!
+
+	Col = cColor(0, 0);
+	int idx = alFirstIndex + 1;
+	for (float fAngle = 0; fAngle <= k2Pif; fAngle += k2Pif / 32) {
+		vPos.x = vLightPos.x + fRadius * cos(fAngle); //*0.5;
+		vPos.y = vLightPos.y + fRadius * sin(fAngle); //*0.5;
+		vPos.z = 100;
+		Vtx = cVertex(vPos, vTex, Col);
+		apLowLevel->AddVertexToBatch(Vtx);
+		if (idx > 0) {
+			apLowLevel->AddIndexToBatch(alFirstIndex); // The center
+			apLowLevel->AddIndexToBatch(idx);          // The current point
+			apLowLevel->AddIndexToBatch(idx - 1);      // The previous  point
+		}
+		idx++;
+	}
+	apLowLevel->AddIndexToBatch(alFirstIndex);     // The center
+	apLowLevel->AddIndexToBatch(alFirstIndex + 1); // The current point
+	apLowLevel->AddIndexToBatch(idx - 1);          // The previous  point
+
+	return idx;
+}
+
+//-----------------------------------------------------------------------
+
+const cRect2f &cLight2DPoint::GetBoundingBox() {
+	return mBoundingBox;
+}
+
+//-----------------------------------------------------------------------
+
+bool cLight2DPoint::UpdateBoundingBox() {
+	mBoundingBox = cRect2f(cVector2f(GetWorldPosition().x, GetWorldPosition().y) - mfFarAttenuation,
+						   cVector2f(mfFarAttenuation * 2));
+
+	return true;
+}
+
+//-----------------------------------------------------------------------
+} // namespace hpl