com.jonathan.survivor.entity

Class GameObject

java.lang.Object

com.jonathan.survivor.entity.GameObject

Direct Known Subclasses:

Human, InteractiveObject, ItemObject, Projectile

public abstract class GameObject
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
GameObject() Creates a GameObject with a bottom-bottom-center at (0,0) and a rectangle collider with width/height of zero.
GameObject(float x, float y, float width, float height) Creates a GameObject with bottom-center at (x,y) and rectangle collider with given width/height.

Method Summary

Methods

Modifier and Type	Method and Description
abstract boolean	canTarget() Returns true if the GameObject can be targetted by a Human.
Vector2	getAcceleration() Retrieves the acceleration of the gameObject as a Vector2.
<T extends Collider> T	getCollider() Returns the collider used by the gameObject for collisions.
int	getObjectId() Gets the ID of the GameObject, used to identify a GameObject in a specific TerrainLayer.
Vector2	getPosition() Retrieves the bottom-center position of the gameObject as a Vector2.
Vector2	getPreviousPosition() Returns the GameObject's previous position before the current game tick.
com.esotericsoftware.spine.Skeleton	getSkeleton() Returns the skeleton used to render the GameObject to the screen.
float	getStateTime() Gets the amount of time the GameObject has been in a specific state.
Cell	getTerrainCell() Gets the cell coordinates where the GameObject is placed on the TerrainLevel.
Vector2	getVelocity() Retrieves the velocity of the gameObject as a Vector2.
float	getX() Returns the bottom-center x-position of the GameObject.
float	getY() Returns the bottom-center y-position of the GameObject.
boolean	isAbove(GameObject gameObject) Returns true if this GameObject is above the given GameObject.
void	moveTo(float x, float y, float time) Moves the GameObject to the desired (x,y) position in a straight line at the given speed in m/s.
void	setAcceleration(float x, float y) Sets the acceleration of the GameObject at their desired (x,y) values.
void	setCollider(Collider c) Sets the collider used by the gameObject for collisions.
void	setObjectId(int objectId) Sets the ID of the GameObject, used to identify a GameObject in a specific TerrainLayer.
void	setPosition(float x, float y) Sets the bottom-center position of the GameObject at the desired (x,y) coordinates.
void	setSkeleton(com.esotericsoftware.spine.Skeleton skeleton) Sets the spine skeleton used by the GameObject to be rendered on-screen.
void	setStateTime(float stateTime) Sets the amount of time the GameObject has been in a specific state.
void	setTerrainCell(int row, int col) Sets the cell coordinates where the GameObject is placed on the TerrainLevel.
void	setVelocity(float x, float y) Sets the velocity of the GameObject at their desired (x,y) values.
void	setVelocityX(float x) Updates the x-velocity of the GameObject.
void	setVelocityY(float y) Updates the y-velocity of the GameObject.
void	setX(float x) Sets the center x-position of the GameObject.
void	setY(float y) Sets the bottom y-position of the GameObject.
abstract void	update(float deltaTime) Updates the GameObject's game logic.
void	updateCollider() Snaps the GameObject's collider to the GameObject's position
void	updatePosition(float deltaTime) Updates the position of the GameObject according to its velocity and acceleration.

Methods inherited from class java.lang.Object

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

Constructor Detail

GameObject

public GameObject()

Creates a GameObject with a bottom-bottom-center at (0,0) and a rectangle collider with width/height of zero.

GameObject

public GameObject(float x,
          float y,
          float width,
          float height)

Creates a GameObject with bottom-center at (x,y) and rectangle collider with given width/height.

Method Detail

update

public abstract void update(float deltaTime)

Updates the GameObject's game logic.

updatePosition

public void updatePosition(float deltaTime)

Updates the position of the GameObject according to its velocity and acceleration.

updateCollider

public void updateCollider()

Snaps the GameObject's collider to the GameObject's position

canTarget

public abstract boolean canTarget()

Returns true if the GameObject can be targetted by a Human.

getPosition

public Vector2 getPosition()

Retrieves the bottom-center position of the gameObject as a Vector2. Operations can be performed on the Vector2 using its instance methods, as it is mutable.

setPosition

public void setPosition(float x,
               float y)

Sets the bottom-center position of the GameObject at the desired (x,y) coordinates.

getX

public float getX()

Returns the bottom-center x-position of the GameObject.

setX

public void setX(float x)

Sets the center x-position of the GameObject.

getY

public float getY()

Returns the bottom-center y-position of the GameObject.

setY

public void setY(float y)

Sets the bottom y-position of the GameObject.

getPreviousPosition

public Vector2 getPreviousPosition()

Returns the GameObject's previous position before the current game tick.

getVelocity

public Vector2 getVelocity()

Retrieves the velocity of the gameObject as a Vector2. Operations can be performed on the Vector2 using its instance methods, as it is mutable.

setVelocity

public void setVelocity(float x,
               float y)

Sets the velocity of the GameObject at their desired (x,y) values.

setVelocityX

public void setVelocityX(float x)

Updates the x-velocity of the GameObject.

setVelocityY

public void setVelocityY(float y)

Updates the y-velocity of the GameObject.

getAcceleration

public Vector2 getAcceleration()

Retrieves the acceleration of the gameObject as a Vector2. Operations can be performed on the Vector2 using its instance methods, as it is mutable.

setAcceleration

public void setAcceleration(float x,
                   float y)

Sets the acceleration of the GameObject at their desired (x,y) values.

moveTo

public void moveTo(float x,
          float y,
          float time)

Moves the GameObject to the desired (x,y) position in a straight line at the given speed in m/s.

isAbove

public boolean isAbove(GameObject gameObject)

Returns true if this GameObject is above the given GameObject.

getCollider

public <T extends Collider> T getCollider()

Returns the collider used by the gameObject for collisions.

setCollider

public void setCollider(Collider c)

Sets the collider used by the gameObject for collisions.

getSkeleton

public com.esotericsoftware.spine.Skeleton getSkeleton()

Returns the skeleton used to render the GameObject to the screen. Returns null if the GameObject doesn't use a Spine skeleton.

setSkeleton

public void setSkeleton(com.esotericsoftware.spine.Skeleton skeleton)

Sets the spine skeleton used by the GameObject to be rendered on-screen.

getTerrainCell

public Cell getTerrainCell()

Gets the cell coordinates where the GameObject is placed on the TerrainLevel.

setTerrainCell

public void setTerrainCell(int row,
                  int col)

Sets the cell coordinates where the GameObject is placed on the TerrainLevel.

getStateTime

public float getStateTime()

Gets the amount of time the GameObject has been in a specific state. (e.g., stateTime = 0.4 if the GameObject has been in the JUMP state for 0.4 seconds.

setStateTime

public void setStateTime(float stateTime)

Sets the amount of time the GameObject has been in a specific state. Only the gameObject's update() method should update this value.

getObjectId

public int getObjectId()

Gets the ID of the GameObject, used to identify a GameObject in a specific TerrainLayer.

setObjectId

public void setObjectId(int objectId)

Sets the ID of the GameObject, used to identify a GameObject in a specific TerrainLayer.