espresso3d.engine.collision
Class E3DCollisionHandler

java.lang.Object
  espresso3d.engine.base.E3DEngineItem
      espresso3d.engine.collision.E3DCollisionHandler

public class E3DCollisionHandler

extends E3DEngineItem

Author:

espresso3d This contains collision detection helpers and the main collision detection routine for checking collisions in the world.

Field Summary

static int	COLLISIONTYPE_COLLIDEE_BOUNDINGOBJECT_IFAVAIL
static int	COLLISIONTYPE_COLLIDEE_TRIANGLE
static int	COLLISIONTYPE_SOURCE_BOUNDINGOBJECT
static int	COLLISIONTYPE_SOURCE_SEGMENT
static int	COLLISIONTYPE_SOURCE_TRIANGLE

Constructor Summary

E3DCollisionHandler(E3DEngine engine)

Method Summary

E3DCollision	checkCollision(int collisionTypeSource, int collisionTypeDest, boolean notifyAllObjectsCollided, E3DCollisionDetectableObject sourceObject, E3DVector3F sourceStartPos, E3DVector3F sourceEndPos)
E3DSector	checkForPortalCollisionsAndGetSectorChange(E3DVector3F startPos, E3DVector3F endPos, E3DSector sector) This method is used mainly by the engine to see when it translates objects, if they collide with a portal.
static E3DCollision	getClosestCollisionToPoint(E3DVector3F point, java.util.ArrayList collisions) Takes a list of E3DCollision object's and returns which collision was closest to the point
static E3DCollision	getFurthestCollisionFromPoint(E3DVector3F point, java.util.ArrayList collisions)

Methods inherited from class espresso3d.engine.base.E3DEngineItem

getEngine, setEngine

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

COLLISIONTYPE_SOURCE_SEGMENT

public static final int COLLISIONTYPE_SOURCE_SEGMENT

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Constant Field Values

COLLISIONTYPE_SOURCE_TRIANGLE

public static final int COLLISIONTYPE_SOURCE_TRIANGLE

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Constant Field Values

COLLISIONTYPE_SOURCE_BOUNDINGOBJECT

public static final int COLLISIONTYPE_SOURCE_BOUNDINGOBJECT

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Constant Field Values

COLLISIONTYPE_COLLIDEE_TRIANGLE

public static final int COLLISIONTYPE_COLLIDEE_TRIANGLE

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Constant Field Values

COLLISIONTYPE_COLLIDEE_BOUNDINGOBJECT_IFAVAIL

public static final int COLLISIONTYPE_COLLIDEE_BOUNDINGOBJECT_IFAVAIL

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Constant Field Values

Constructor Detail

E3DCollisionHandler

public E3DCollisionHandler(E3DEngine engine)

Method Detail

checkCollision

public E3DCollision checkCollision(int collisionTypeSource,
                                   int collisionTypeDest,
                                   boolean notifyAllObjectsCollided,
                                   E3DCollisionDetectableObject sourceObject,
                                   E3DVector3F sourceStartPos,
                                   E3DVector3F sourceEndPos)

checkForPortalCollisionsAndGetSectorChange

public E3DSector checkForPortalCollisionsAndGetSectorChange(E3DVector3F startPos,
                                                            E3DVector3F endPos,
                                                            E3DSector sector)

This method is used mainly by the engine to see when it translates objects, if they collide with a portal. This is necessary for the engine to keep track of the sector objects are in. This always uses a line segment (vs triangle) collision detector.

Parameters:

startPos - The starting position of the object we are checking against portals

endPos - The ending position of the object we are checking against portals

sector - The sector the object is currently in

Returns:

Returns the sector the object should be placed in or null if there is no portal collision

getClosestCollisionToPoint

public static E3DCollision getClosestCollisionToPoint(E3DVector3F point,
                                                      java.util.ArrayList collisions)

Takes a list of E3DCollision object's and returns which collision was closest to the point

getFurthestCollisionFromPoint

public static E3DCollision getFurthestCollisionFromPoint(E3DVector3F point,
                                                         java.util.ArrayList collisions)