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public/engine/ICollideable.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef ENGINE_ICOLLIDEABLE_H
+#define ENGINE_ICOLLIDEABLE_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+
+enum SolidType_t;
+class IHandleEntity;
+struct Ray_t;
+struct model_t;
+class Vector;
+class QAngle;
+class CGameTrace;
+typedef CGameTrace trace_t;
+class IClientUnknown;
+
+
+abstract_class ICollideable
+{
+public:
+	// Gets at the entity handle associated with the collideable
+	virtual IHandleEntity	*GetEntityHandle() = 0;
+
+	// These methods return the bounds of an OBB measured in "collision" space
+	// which can be retreived through the CollisionToWorldTransform or
+	// GetCollisionOrigin/GetCollisionAngles methods
+	virtual const Vector&	OBBMinsPreScaled() const = 0;
+	virtual const Vector&	OBBMaxsPreScaled() const = 0;
+	virtual const Vector&	OBBMins() const = 0;
+	virtual const Vector&	OBBMaxs() const = 0;
+
+	// Returns the bounds of a world-space box used when the collideable is being traced
+	// against as a trigger. It's only valid to call these methods if the solid flags
+	// have the FSOLID_USE_TRIGGER_BOUNDS flag set.
+	virtual void			WorldSpaceTriggerBounds( Vector *pVecWorldMins, Vector *pVecWorldMaxs ) const = 0;
+
+	// custom collision test
+	virtual bool			TestCollision( const Ray_t &ray, unsigned int fContentsMask, trace_t& tr ) = 0;
+
+	// Perform hitbox test, returns true *if hitboxes were tested at all*!!
+	virtual bool			TestHitboxes( const Ray_t &ray, unsigned int fContentsMask, trace_t& tr ) = 0;
+
+	// Returns the BRUSH model index if this is a brush model. Otherwise, returns -1.
+	virtual int				GetCollisionModelIndex() = 0;
+
+	// Return the model, if it's a studio model.
+	virtual const model_t*	GetCollisionModel() = 0;
+
+	// Get angles and origin.
+	virtual const Vector&	GetCollisionOrigin() const = 0;
+	virtual const QAngle&	GetCollisionAngles() const = 0;
+	virtual const matrix3x4_t&	CollisionToWorldTransform() const = 0;
+
+	// Return a SOLID_ define.
+	virtual SolidType_t		GetSolid() const = 0;
+	virtual int				GetSolidFlags() const = 0;
+
+	// Gets at the containing class...
+	virtual IClientUnknown*	GetIClientUnknown() = 0;
+	
+	// We can filter out collisions based on collision group
+	virtual int				GetCollisionGroup() const = 0;
+
+	// Returns a world-aligned box guaranteed to surround *everything* in the collision representation
+	// Note that this will surround hitboxes, trigger bounds, physics.
+	// It may or may not be a tight-fitting box and its volume may suddenly change
+	virtual void			WorldSpaceSurroundingBounds( Vector *pVecMins, Vector *pVecMaxs ) = 0;
+
+	virtual bool			ShouldTouchTrigger( int triggerSolidFlags ) const = 0;
+
+	// returns NULL unless this collideable has specified FSOLID_ROOT_PARENT_ALIGNED
+	virtual const matrix3x4_t	*GetRootParentToWorldTransform() const = 0;
+};
+
+
+#endif // ENGINE_ICOLLIDEABLE_H