org.mini2Dx.core.engine.geom

Class CollisionPolygon

java.lang.Object

org.mini2Dx.core.geom.Shape

org.mini2Dx.core.geom.Polygon

org.mini2Dx.core.engine.geom.CollisionPolygon

All Implemented Interfaces:

CollisionShape, Positionable, Sizeable, Updatable

public class CollisionPolygon
extends Polygon
implements CollisionShape

Constructor Summary

Constructors

Constructor and Description
CollisionPolygon(float[] vertices)
CollisionPolygon(int id, float[] vertices)
CollisionPolygon(int id, com.badlogic.gdx.math.Vector2[] vectors)
CollisionPolygon(com.badlogic.gdx.math.Vector2[] vectors)

Method Summary

Modifier and Type	Method and Description
void	add(float x, float y) Adds components to the position of this Shape
void	addPoint(float x, float y) Adds an additional point to this Polygon
<T extends Positionable> void	addPostionChangeListener(PositionChangeListener<T> listener) Adds a PositionChangeListener to be notified of coordinate changes
<T extends Sizeable> void	addSizeChangeListener(SizeChangeListener<T> listener) Adds a SizeChangeListener to be notified of size changes
void	draw(Graphics g) Draws this shape using a Graphics instance
void	fill(Graphics g) Fills this shape using a Graphics instance
void	forceTo(float x, float y) Sets the current x and y coordinate to the specified x and y and force updates the rendering position to match
float	getDistanceTo(Positionable positionable) Returns this distance between this object's x,y coordinates and the provided Positionable's xy coordinates
float	getHeight() Returns the height of this object
int	getId() Returns the unique id of this object
int	getRenderX() Returns the render x coordinate of this object
int	getRenderY() Returns the render y coordinate of this object
Shape	getShape() Returns the underlying Shape instance
float	getWidth() Returns the width of this object
void	interpolate(GameContainer gc, float alpha) Interpolate between the previous and current state
void	moveTowards(float x, float y, float speed) Moves this Positionable towards a coordinate
void	moveTowards(Positionable positionable, float speed) Moves this Positionable towards another Positionable
void	preUpdate() This method needs to be called at the start of each frame before any changes are made to this object
void	removePoint(float x, float y) Removes a point from this Polygon
<T extends Positionable> void	removePositionChangeListener(PositionChangeListener<T> listener) Removes a PositionChangeListener to stop it being notified of coordinate changes
<T extends Sizeable> void	removeSizeChangeListener(SizeChangeListener<T> listener) Removes a SizeChangeListener to stop it being notified of size changes
void	rotate(float degrees) Rotates this Shape by a specified amount of degrees with its first point as the origin
void	rotateAround(float centerX, float centerY, float degrees) Rotates this Shape by a specified amount of degrees around a specified point
void	scale(float scale) Scales the radius of this shape.
void	set(float x, float y) Sets the x and y coordinate of this object
void	setCenter(float x, float y) Sets the center x,y coordinate of this object
void	setCenterX(float x) Sets the center x coordinate
void	setCenterY(float y) Sets the center y coordianate
void	setRadius(float radius) Sets the radius of this shape.
void	setRotation(float degrees) Sets the rotation of this Shape with its first point as the origin
void	setRotationAround(float centerX, float centerY, float degrees) Sets the rotation of this Shape with a specified point as the origin
void	setVertices(float[] vertices)
void	setVertices(com.badlogic.gdx.math.Vector2[] vertices)
void	setX(float x) Sets the x coordinate of this object
void	setY(float y) Sets the y coordinate of this object
void	subtract(float x, float y) Subtracts components from the position of this Shape
void	update(GameContainer gc, float delta) Updates the game screen

Methods inherited from class org.mini2Dx.core.geom.Polygon

addPoint, contains, contains, contains, contains, copy, edgeIterator, equals, getCenterX, getCenterY, getDistanceTo, getMaxX, getMaxY, getMinX, getMinY, getNumberOfSides, getPolygon, getRotation, getTriangles, getVertices, getX, getX, getY, getY, hashCode, intersects, intersects, intersects, intersects, intersects, intersects, intersectsLineSegment, intersectsLineSegment, isCircle, isEquilateral, isEquilateral, isRectangle, isSameAs, lerp, removePoint, set, sign, toString, translate, triangleContains

Methods inherited from class org.mini2Dx.core.geom.Shape

getDistanceTo

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.mini2Dx.core.engine.geom.CollisionShape

contains, contains, intersects, intersects, intersectsLineSegment, intersectsLineSegment

Methods inherited from interface org.mini2Dx.core.engine.Positionable

getDistanceTo, getDistanceTo, getX, getY

Methods inherited from interface org.mini2Dx.core.engine.Sizeable

getCenterX, getCenterY, getMaxX, getMaxY, getMinX, getMinY

Constructor Detail

CollisionPolygon

public CollisionPolygon(float[] vertices)

CollisionPolygon

public CollisionPolygon(com.badlogic.gdx.math.Vector2[] vectors)

CollisionPolygon

public CollisionPolygon(int id,
                        float[] vertices)

CollisionPolygon

public CollisionPolygon(int id,
                        com.badlogic.gdx.math.Vector2[] vectors)

Method Detail

preUpdate

public void preUpdate()

Description copied from interface: CollisionShape

This method needs to be called at the start of each frame before any changes are made to this object

Specified by:

preUpdate in interface CollisionShape

update

public void update(GameContainer gc,
                   float delta)

Description copied from interface: Updatable

Updates the game screen

Specified by:

update in interface Updatable

Parameters:

gc - The GameContainer of the game

delta - The time in seconds since the last update

interpolate

public void interpolate(GameContainer gc,
                        float alpha)

Description copied from interface: Updatable

Interpolate between the previous and current state

Specified by:

interpolate in interface Updatable

alpha - The interpolation alpha value

draw

public void draw(Graphics g)

Description copied from class: Shape

Draws this shape using a Graphics instance

Overrides:

draw in class Polygon

Parameters:

g - The Graphics context to render with

fill

public void fill(Graphics g)

Description copied from class: Shape

Fills this shape using a Graphics instance

Overrides:

fill in class Polygon

Parameters:

g - The Graphics context to render with

getId

public int getId()

Description copied from interface: Positionable

Returns the unique id of this object

Specified by:

getId in interface Positionable

Specified by:

getId in interface Sizeable

Returns:

getDistanceTo

public float getDistanceTo(Positionable positionable)

Description copied from interface: Positionable

Returns this distance between this object's x,y coordinates and the provided Positionable's xy coordinates

Specified by:

getDistanceTo in interface Positionable

Parameters:

positionable - The Positionable to retrieve the distance from

Returns:

0 if the xy coordinates are the same

addPostionChangeListener

public <T extends Positionable> void addPostionChangeListener(PositionChangeListener<T> listener)

Description copied from interface: Positionable

Adds a PositionChangeListener to be notified of coordinate changes

Specified by:

addPostionChangeListener in interface Positionable

Parameters:

listener - The PositionChangeListener to add

removePositionChangeListener

public <T extends Positionable> void removePositionChangeListener(PositionChangeListener<T> listener)

Description copied from interface: Positionable

Removes a PositionChangeListener to stop it being notified of coordinate changes

Specified by:

removePositionChangeListener in interface Positionable

Parameters:

listener - The PositionChangeListener to remove

addSizeChangeListener

public <T extends Sizeable> void addSizeChangeListener(SizeChangeListener<T> listener)

Description copied from interface: Sizeable

Adds a SizeChangeListener to be notified of size changes

Specified by:

addSizeChangeListener in interface Sizeable

Parameters:

listener - The SizeChangeListener to add

removeSizeChangeListener

public <T extends Sizeable> void removeSizeChangeListener(SizeChangeListener<T> listener)

Description copied from interface: Sizeable

Removes a SizeChangeListener to stop it being notified of size changes

Specified by:

removeSizeChangeListener in interface Sizeable

Parameters:

listener - The SizeChangeListener to remove

addPoint

public void addPoint(float x,
                     float y)

Description copied from class: Polygon

Adds an additional point to this Polygon

Overrides:

addPoint in class Polygon

Parameters:

x - The x coordinate

y - The y coordinate

removePoint

public void removePoint(float x,
                        float y)

Description copied from class: Polygon

Removes a point from this Polygon

Overrides:

removePoint in class Polygon

Parameters:

x - The x coordinate

y - The y coordinate

moveTowards

public void moveTowards(float x,
                        float y,
                        float speed)

Description copied from interface: Positionable

Moves this Positionable towards a coordinate

Specified by:

moveTowards in interface Positionable

Parameters:

x - The target x coordinate

y - The target y coordinate

speed - The amount to move by

moveTowards

public void moveTowards(Positionable positionable,
                        float speed)

Description copied from interface: Positionable

Moves this Positionable towards another Positionable

Specified by:

moveTowards in interface Positionable

Parameters:

positionable - The target Positionable

speed - The amount to move by

add

public void add(float x,
                float y)

Description copied from class: Shape

Adds components to the position of this Shape

Overrides:

add in class Shape

Parameters:

x - The x component

y - The y component

subtract

public void subtract(float x,
                     float y)

Description copied from class: Shape

Subtracts components from the position of this Shape

Overrides:

subtract in class Shape

Parameters:

x - The x component

y - The y component

setX

public void setX(float x)

Description copied from class: Shape

Sets the x coordinate of this object

Specified by:

setX in interface Positionable

Overrides:

setX in class Polygon

Parameters:

x - The x coordinate

setY

public void setY(float y)

Description copied from class: Shape

Sets the y coordinate of this object

Specified by:

setY in interface Positionable

Overrides:

setY in class Polygon

Parameters:

y - The y coordinate

set

public void set(float x,
                float y)

Description copied from class: Shape

Sets the x and y coordinate of this object

Specified by:

set in interface CollisionShape

Overrides:

set in class Polygon

Parameters:

x - The x coordinate

y - The y coordinate

setCenter

public void setCenter(float x,
                      float y)

Description copied from class: Shape

Sets the center x,y coordinate of this object

Specified by:

setCenter in interface Sizeable

Overrides:

setCenter in class Polygon

Parameters:

x - The x coordinate of the shape's center

y - The y coordinate of the shape's center

setCenterX

public void setCenterX(float x)

Description copied from class: Shape

Sets the center x coordinate

Specified by:

setCenterX in interface Sizeable

Overrides:

setCenterX in class Polygon

Parameters:

x - The x coordinate of the shape's center

setCenterY

public void setCenterY(float y)

Description copied from class: Shape

Sets the center y coordianate

Specified by:

setCenterY in interface Sizeable

Overrides:

setCenterY in class Polygon

Parameters:

y - The y coordinate of the shape's center

forceTo

public void forceTo(float x,
                    float y)

Description copied from interface: CollisionShape

Sets the current x and y coordinate to the specified x and y and force updates the rendering position to match

Specified by:

forceTo in interface CollisionShape

Parameters:

x - The x coordinate to set

y - The y coordinate to set

setRotation

public void setRotation(float degrees)

Description copied from class: Shape

Sets the rotation of this Shape with its first point as the origin

Overrides:

setRotation in class Polygon

Parameters:

degrees - The rotation in degrees

rotate

public void rotate(float degrees)

Description copied from class: Shape

Rotates this Shape by a specified amount of degrees with its first point as the origin

Overrides:

rotate in class Polygon

Parameters:

degrees - The rotation in degrees

setRotationAround

public void setRotationAround(float centerX,
                              float centerY,
                              float degrees)

Description copied from class: Shape

Sets the rotation of this Shape with a specified point as the origin

Overrides:

setRotationAround in class Polygon

Parameters:

centerX - The origin/center x coordinate

centerY - The origin/center y coordinate

degrees - The rotation in degrees

rotateAround

public void rotateAround(float centerX,
                         float centerY,
                         float degrees)

Description copied from class: Shape

Rotates this Shape by a specified amount of degrees around a specified point

Overrides:

rotateAround in class Polygon

Parameters:

centerX - The origin/center x coordinate

centerY - The origin/center y coordinate

degrees - The rotation in degrees

setVertices

public void setVertices(float[] vertices)

Overrides:

setVertices in class Polygon

setVertices

public void setVertices(com.badlogic.gdx.math.Vector2[] vertices)

Overrides:

setVertices in class Polygon

setRadius

public void setRadius(float radius)

Description copied from class: Shape

Sets the radius of this shape. For Polygon shapes, this will stretch in/out the shape from its center. Note that Polygons must be equilateral.

Specified by:

setRadius in interface Sizeable

Overrides:

setRadius in class Polygon

Parameters:

radius - The radius in pixels

scale

public void scale(float scale)

Description copied from class: Shape

Scales the radius of this shape. For Polygon shapes, this will stretch in/out the shape from its center. Note that Polygons must be equilateral.

Specified by:

scale in interface Sizeable

Overrides:

scale in class Polygon

Parameters:

scale - The amount to scale by (e.g. 2.0 = double the size)

getRenderX

public int getRenderX()

Description copied from interface: Positionable

Returns the render x coordinate of this object

Specified by:

getRenderX in interface Positionable

Returns:

getRenderY

public int getRenderY()

Description copied from interface: Positionable

Returns the render y coordinate of this object

Specified by:

getRenderY in interface Positionable

Returns:

getWidth

public float getWidth()

Description copied from interface: Sizeable

Returns the width of this object

Specified by:

getWidth in interface Sizeable

Returns:

0 by default

getHeight

public float getHeight()

Description copied from interface: Sizeable

Returns the height of this object

Specified by:

getHeight in interface Sizeable

Returns:

0 by default

getShape

public Shape getShape()

Description copied from interface: CollisionShape

Returns the underlying Shape instance

Specified by:

getShape in interface CollisionShape

Returns: