com.golden.gamedev.object.collision
Class PreciseCollisionGroup

java.lang.Object
  com.golden.gamedev.object.CollisionManager
      com.golden.gamedev.object.collision.BasicCollisionGroup
          com.golden.gamedev.object.collision.CollisionGroup
              com.golden.gamedev.object.collision.PreciseCollisionGroup

Direct Known Subclasses:

AdvanceCollisionGroup

public abstract class PreciseCollisionGroup
extends CollisionGroup

Subclass of CollisionGroup that calculate precise sprite position after collision.

Suitable for collision that need the collided object stop rather than vanish.

For example:
Collision between balls that need to stop or bounce precisely when collided with blocks.

See Also:

PlayField.addCollisionGroup(SpriteGroup, SpriteGroup, CollisionManager)

Field Summary

Fields inherited from class com.golden.gamedev.object.collision.CollisionGroup

BOTTOM_TOP_COLLISION, collisionSide, collisionX1, collisionX2, collisionY1, collisionY2, LEFT_RIGHT_COLLISION, RIGHT_LEFT_COLLISION, sprite1, sprite2, TOP_BOTTOM_COLLISION

Fields inherited from class com.golden.gamedev.object.collision.BasicCollisionGroup

pixelPerfectCollision, rect1, rect2

Constructor Summary

PreciseCollisionGroup()
Creates new collision group precise.

Method Summary

boolean

isCollide(Sprite s1, Sprite s2, CollisionShape shape1, CollisionShape shape2) Performs collision check between Sprite s1 and Sprite s2, and returns true if the sprites (shape1, shape2) is collided.

Methods inherited from class com.golden.gamedev.object.collision.CollisionGroup

getCollisionSide, getSprite1, getSprite2, printCollisionSide, revertPosition1, revertPosition2

Methods inherited from class com.golden.gamedev.object.collision.BasicCollisionGroup

checkCollision, collided, getCollisionShape1, getCollisionShape2

Methods inherited from class com.golden.gamedev.object.CollisionManager

getGroup1, getGroup2, getIntersectionRect, isActive, isPixelCollide, setActive, setCollisionGroup

Methods inherited from class java.lang.Object

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

Constructor Detail

PreciseCollisionGroup

public PreciseCollisionGroup()

Creates new collision group precise.

Method Detail

isCollide

public boolean isCollide(Sprite s1,
                         Sprite s2,
                         CollisionShape shape1,
                         CollisionShape shape2)

Performs collision check between Sprite s1 and Sprite s2, and returns true if the sprites (shape1, shape2) is collided.

PreciseCollisionGroup is tracking sprite movement step by step to check the actual position of the collision.

Overrides:

isCollide in class CollisionGroup

Parameters:

s1 - sprite from group 1

s2 - sprite from group 2

shape1 - bounding box of sprite 1

shape2 - bounding box of sprite 2

Returns:

true, if the sprites is collided one another.

See Also:

CollisionGroup.collisionSide, CollisionGroup.sprite1, CollisionGroup.collisionX1, CollisionGroup.collisionY1, CollisionGroup.revertPosition1()