qaf::CollisionStruct Class Reference

#include <qafCollisionStruct.h>

Inheritance diagram for qaf::CollisionStruct:

List of all members.

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Detailed Description

Represents a geometric boundary for use in collision tests.

CollisionStruct is an abstract class that represents generic boundaries. In your GameObjs, you should return one of the available subclasses:

• CollisionStruct::Box
• CollisionStruct::Circle
• CollisionStruct::Polygon.

Warning:

Do not derive from this class to implement your own collision tests.

See also:

GameObj::getCollisionStruct()

Public Member Functions
virtual bool	collidesWith (CollisionStruct *otherStruct)=0
	Returns: true if this struct is colliding against the supplied pointer.
virtual bool	hasPoint (float x, float y)=0
	Returns: true if the point lies inside the structure's boundaries.
virtual bool	pointIntersection (float x1, float y1, float x2, float y2, Vector2D *pContact, Vector2D *pNormal)=0
	Tests a "moving point" collision.
virtual void	move (float dx, float dy)=0
	Moves the collision structure by the specified amount of pixels.
virtual void	render (float scrollX, float scrollY, unsigned long color)=0
	For debug purposes, this will render the current collision boundaries as a set of lines.
Classes
class	Box
	Represents rectangular collision boundaries. More...
class	Circle
	Represents circular collision boundaries. More...
class	Composite
	Represents disjointed collision shapes. More...
class	Polygon
	Represents a polygonal collision boundary. More...

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Member Function Documentation

virtual bool qaf::CollisionStruct::pointIntersection	(	float	x1,
		float	y1,
		float	x2,
		float	y2,
		Vector2D *	pContact,
		Vector2D *	pNormal
	)			[pure virtual]

Tests a "moving point" collision.

The method returns true if the point moving from (x1, y1) to (x2, y2) will collide against the structure. The point of intersection will be stored in the pContact parameter, and its normal will be stored in pNormal. These pointers may be NULL.

Returns:

true if the point's path intersects the collision structure.

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The documentation for this class was generated from the following file:

• qafCollisionStruct.h

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