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engines/scumm/he/basketball/collision/bball_collision_sphere.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 SCUMM_HE_BASKETBALL_COLLISION_BBALL_COLLISION_SPHERE_H
+#define SCUMM_HE_BASKETBALL_COLLISION_BBALL_COLLISION_SPHERE_H
+
+#ifdef ENABLE_HE
+
+#include "scumm/he/basketball/collision/bball_collision_object.h"
+#include "scumm/he/basketball/collision/bball_collision_stack.h"
+
+namespace Scumm {
+
+const int BOUNCE_SPEED_LIMIT = 20;      // If the z-direction speed of the ball falls below this limit during a bounce, then the ball will begin to roll.
+const int ROLL_SPEED_LIMIT = 20;        // If the xy-direction speed of the ball falls below this limit during a roll, then the ball will stop.
+const int ROLL_SLOWDOWN_FREQUENCY = 10; // The ball slows down every x frames while rolling.
+
+class CCollisionSphere : public ICollisionObject, public U32Sphere {
+public:
+	CCollisionSphere() : ICollisionObject(kSphere),
+						 _rollingCount(0),
+						 _positionSaved(false) {}
+
+	~CCollisionSphere() {}
+
+	using ICollisionObject::getObjectDistance;
+	float getObjectDistance(const CCollisionBox &targetObject) const override;
+	float getObjectDistance(const CCollisionCylinder &targetObject) const override;
+
+	using ICollisionObject::testObjectIntersection;
+	bool testObjectIntersection(const CCollisionBox &targetObject, U32Distance3D *pDistance) const override;
+	bool testObjectIntersection(const CCollisionCylinder &targetObject, U32Distance3D *pDistance) const override;
+
+	using ICollisionObject::validateCollision;
+	bool validateCollision(const CCollisionBox &targetObject, U32Distance3D *pDistance) override;
+	bool validateCollision(const CCollisionCylinder &targetObject, U32Distance3D *pDistance) override;
+
+	using ICollisionObject::backOutOfObject;
+	bool backOutOfObject(const CCollisionBox &targetObject, U32Distance3D *pDistance, float *pTimeUsed) override;
+	bool backOutOfObject(const CCollisionCylinder &targetObject, U32Distance3D *pDistance, float *pTimeUsed) override;
+
+	using ICollisionObject::nudgeObject;
+	bool nudgeObject(const CCollisionBox &targetObject, U32Distance3D *pDistance, float *pTimeUsed) override;
+	bool nudgeObject(const CCollisionCylinder &targetObject, U32Distance3D *pDistance, float *pTimeUsed) override;
+
+	void handleCollisions(CCollisionObjectVector *pCollisionVector, float *pTimeUsed, bool advanceObject) override;
+
+	using ICollisionObject::isOnObject;
+	bool isOnObject(const CCollisionBox &targetObject, const U32Distance3D &distance) const override;
+	bool isOnObject(const CCollisionCylinder &targetObject, const U32Distance3D &distance) const override;
+
+	U32BoundingBox getBoundingBox() const override;
+	U32BoundingBox getBigBoundingBox() const override;
+
+	void save() override;
+	void restore() override;
+
+	int _rollingCount;
+
+
+protected:
+	float getDimensionDistance(const CCollisionBox &targetObject, EDimension dimension) const;
+	float getDimensionDistance(const CCollisionCylinder &targetObject, EDimension dimension) const;
+
+private:
+	bool _positionSaved;
+	U32FltPoint3D _safetyPoint;
+	U32FltVector3D _safetyVelocity;
+
+	bool backStraightOutOfObject(const ICollisionObject &targetObject, U32Distance3D *pDistance, float *pTimeUsed);
+
+	using ICollisionObject::defineReflectionPlane;
+	void defineReflectionPlane(const CCollisionBox &targetObject, const U32Distance3D &distance, U32Plane *collisionPlane) const override;
+	void defineReflectionPlane(const CCollisionCylinder &targetObject, const U32Distance3D &distance, U32Plane *collisionPlane) const override;
+
+	void reboundOffPlane(const U32Plane &collisionPlane, bool isOnPlane);
+
+	using ICollisionObject::getPenetrationTime;
+	float getPenetrationTime(const CCollisionBox &targetObject, const U32Distance3D &distance, EDimension dimension) const override;
+	float getPenetrationTime(const CCollisionCylinder &targetObject, const U32Distance3D &distance, EDimension dimension) const override;
+
+	void increaseVelocity(float minSpeed);
+};
+
+
+} // End of namespace Scumm
+
+#endif // ENABLE_HE
+
+#endif // SCUMM_HE_BASKETBALL_COLLISION_BBALL_COLLISION_SPHERE_H