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engines/hpl1/engine/physics/Collider2D.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_COLLIDER2D_H
+#define HPL_COLLIDER2D_H
+
+#include "hpl1/engine/math/MathTypes.h"
+#include "hpl1/engine/system/SystemTypes.h"
+
+namespace hpl {
+
+class cMesh2D;
+class cWorld2D;
+class cBody2D;
+class cCollideData2D;
+class cCollisionMesh2D;
+
+class cCollider2DDebug {
+public:
+	cVector2f mvPushVec;
+	cVector2f mvPushPos;
+};
+
+class cCollider2D {
+public:
+	cCollider2D();
+	~cCollider2D();
+
+	void SetWorld(cWorld2D *apWorld) { mpWorld = apWorld; }
+
+	/**
+	 * Collides a body with the world and returns a flag of what object has collided.
+	 * \param *apBody
+	 * \return 0= no collision, eFlagBit0 = Tiles, all other bits are custom.
+	 */
+	tFlag CollideBody(cBody2D *apBody, cCollideData2D *apData);
+
+	/**
+	 * Collides a custom rect with the world
+	 * \param aRect
+	 * \param alCollideFlags Specifies what things to check for collision with.
+	 * \return
+	 */
+	tFlag CollideRect(cRect2f &aRect, tFlag alCollideFlags, cCollideData2D *apData);
+
+	tFlag CollideLine(const cVector2f &avStart, const cVector2f &avEnd, tFlag alCollideFlags,
+					  cCollideData2D *apData);
+
+	cCollider2DDebug mDebug;
+
+private:
+	cWorld2D *mpWorld;
+
+	void SetCollideMesh(cCollisionMesh2D *apMesh, cRect2f &aRect);
+
+	bool Collide(cCollisionMesh2D *apMeshA, cCollisionMesh2D *apMeshB, cVector2f &avMTD);
+	bool AxisSeparateMeshes(cVector2f &avAxis, cCollisionMesh2D *apMeshA,
+							cCollisionMesh2D *apMeshB);
+	void CalculateInterval(const cVector2f &avAxis, cCollisionMesh2D *apMesh,
+						   float &afMin, float &afMax);
+};
+
+} // namespace hpl
+
+#endif // HPL_COLLIDER2D_H