Hello again.
I've been working on a game, have redone a bit, tried to make it simpler, etc, and I've ran into an issue. For my jump code (line 67), it is not working correctly. I will press down W, I will be teleported up by my jump height as usual, but it will instantly make me fall down, instead of slowing me down until I go downwards again. But, if I call the jump code right when the game is ran, once, I will jump as I want to; I move up 15, then 14, then 13, etc, until 0, then I fall down until I hit the ground. I can upload a scenario if you need me to, but I cannot find what is causing this issue.
import greenfoot.*; // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
import java.util.List;
/**
* Write a description of class GroundBack here.
*
* @author (your name)
* @version (a version number or a date)
*/
public class Player extends Mover
{
private int vSpeed;
private int gravity = 1;
private int jumpStrength = -15;
private int animationTimer = 0;
public boolean onGround;
private int test;
public Player()
{
this.velocity = 5;
}
/**
* Act - do whatever the GroundBack wants to do. This method is called whenever
* the 'Act' or 'Run' button gets pressed in the environment.ii
*/
public void act()
{
if (test == 0)
{
jump();
test = 1;
}
checkKeys();
checkFall();
onGround();
if(onGround == false)
{
onGroundLeft();
if(onGround == false)
{
onGroundRight();
}
}
failSafe();
platformsAbove();
platformAboveLeft();
platformAboveRight();
}
//Keys
private void checkKeys()
{
if(Greenfoot.isKeyDown("d"))
{
if(getOneObjectAtOffset( getImage().getWidth()/2 + 6, 0, Platforms.class) == null)
{
moveRight();
setImage("Character Right.png");
}
}
if(Greenfoot.isKeyDown("a"))
{
if(getOneObjectAtOffset(getImage().getWidth()/-2 - 6, 0, Platforms.class) == null)
{
moveLeft();
setImage("Character Left.png");
}
}
if(Greenfoot.isKeyDown("w"))
{
if(onGround == true)
{
jump();
}
}
}
private void jump()
{
vSpeed = jumpStrength;
setLocation (getX(), getY() + vSpeed);
}
//Collision down
public void onGround()
{
if(getOneObjectAtOffset(0, getImage().getHeight()/2, Platforms.class) != null)
{
onGround = true;
}
else
{
onGround = false;
}
if(getOneObjectAtOffset(0, getImage().getHeight()/2, Platforms.class) == null)
{
onGround = false;
}
else
{
onGround = true;
}
}
private void onGroundLeft()
{
if(getOneObjectAtOffset(20, getImage().getHeight()/2, Platforms.class) != null)
{
onGround = true;
}
if(getOneObjectAtOffset(20, getImage().getHeight()/2, Platforms.class) == null)
{
onGround = false;
}
}
private void onGroundRight()
{
if(getOneObjectAtOffset(-20, getImage().getHeight()/2, Platforms.class) != null)
{
onGround = true;
}
if(getOneObjectAtOffset(-20, getImage().getHeight()/2, Platforms.class) == null)
{
onGround = false;
}
}
private void fall()
{
setLocation (getX(), getY() + vSpeed);
if(vSpeed <= 15)
{
vSpeed = vSpeed + gravity;
}
}
private void checkFall()
{
if (onGround == true)
{
vSpeed = 0;
}
else
{
fall();
}
}
private void failSafe()
{
if(getOneIntersectingObject(Platforms.class) != null)
{
setLocation(getX(), getY() - 2);
}
}
//Collision above
public boolean platformsAbove()
{
int spriteHeight = getImage().getHeight();
int yDistance = (int)(spriteHeight/-2);
Actor ceiling = getOneObjectAtOffset(0, yDistance, Platforms.class);
if(ceiling != null)
{
vSpeed = 1;
bopHead(ceiling);
return true;
}
else
{
return false;
}
}
public boolean platformAboveLeft()
{
int spriteHeight = getImage().getHeight();
int yDistance = (int)(spriteHeight/-2);
Actor ceilingLeft = getOneObjectAtOffset(getImage().getWidth()/-2 - 2, yDistance, Platforms.class);
if(ceilingLeft != null)
{
vSpeed = 1;
bopHead(ceilingLeft);
return true;
}
else
{
return false;
}
}
public boolean platformAboveRight()
{
int spriteHeight = getImage().getHeight();
int yDistance = (int)(spriteHeight/-2);
Actor ceilingRight = getOneObjectAtOffset(getImage().getWidth()/2 + 2, yDistance, Platforms.class);
if(ceilingRight != null)
{
vSpeed = 1;
bopHead(ceilingRight);
return true;
}
else
{
return false;
}
}
public void bopHead(Actor ceiling)
{
int ceilingHeight = ceiling.getImage().getHeight();
int newY = ceiling.getY() + (ceilingHeight + getImage().getHeight())/2;
setLocation(getX(), newY);
}
}