Greenfoot

danpost

2013/9/20

#

Is this something like what you want?

wabuilderman

2013/9/20

#

yes, but with it all fading to black. in other words: *above* + blackness, with *above* being the lightness of the given blocks.

danpost

2013/9/20

#

So, you are saying that I have it fading the wrong way (toward white instead of what you want, toward black).

wabuilderman

2013/9/20

#

i guess.. i want what you have, just only in a way that it simply darkens the further form the top it is, rather than lightening stuff.

wabuilderman

2013/9/20

#

in other words: top block: full color second block: full block + a little black so forth and so forth till : full color + solid black

danpost

2013/9/21

#

I came up with the following. It replaces the inside 'while' loop in your 'generateHills' method of your 'PlayerWorld' class.

int trans = 0;
while (y < sizeY / blockSize / .6)
{
   y++;
   Dirt dirt = new Dirt();
   GreenfootImage tint = new GreenfootImage(10, 10);
   tint.fill();
   tint.setTransparency(trans);
   dirt.getImage().drawImage(tint, 0, 0);
   addObject(dirt, x, y);
   trans = trans+40;
   if (trans > 255) trans = 255;
}

JetLennit

2013/9/21

#

You could also try looking at this

JetLennit

2013/9/21

#

You could also try looking at this Sorry, double post......

wabuilderman

2013/9/21

#

thanks danpost! only... can this be applied to a update cycle? and can this be used in sink with a 2nd light source?

wabuilderman

2013/9/21

#

i kind of understand your code, but i don't see how i can do a update...

danpost

2013/9/21

#

It looks like you tried in your Block class to get the lighting system working. The main problem I see there, is you are saving the baseImg value from within a method instead of from within the constructor. If you use 'baseImg = getImage()' from within the constructor, then you can use 'GreenfootImage tempImg = new GreenfootImage(baseImg)' to get a copy of it in your setLight method. This way, you are not using an altered image to alter again. What I would probably do is add an int field to the class to hold the current tint (darkness minus lightness) and if the new values of darkness and lightness produce a value more than, let us say, 8 or 16 units away from the current value, then re-draw the image with the new tint and save that new tint value. All that has to be done then is updating the values of darkness and lightness.

wabuilderman

2013/9/21

#

umm... in english please?

danpost

2013/9/21

#

How about in java:

// in Block class
// with instance fields
int darkness, lightness, tint;
GreenfootImage baseImg;
// in Block constructor
baseImg = getImage();
// the setLight method (renamed)
private void updateImage()
{
    if (Math.abs(tint-(darkness-lightness)) < 8) return;
    tint = darkness-lightness;
    GreenfootImage image = new GreenfootImage(baseImg);
    GreenfootImage tintImg = new GreenfootImage(image.getWidth(), image.getHeight());
    tintImg.fill(); // default color for new image is black
    tintImg.setTransparency(tint);
    image.drawImage(tintImg, 0 ,0);
    setImage(image);
}
// with these methods
public void setDarkness(int dark)
{
    if (dark < 0) dark = 0;
    if (dark > 255) dark = 255;
    darkness = dark;
    updateImage();
}

public void setLightness(int light)
{
    if  (light < 0) light = 0;
    if (light > 255) light = 255;
    lightness = light;
    updateImage();
}

wabuilderman

2013/9/21

#

thx.

danpost

2013/9/21

#

I noticed a bit of a problem with my last code-post. Will come up with a solution shortly.

Activity

About

Documentation

Download

Discuss

Scenarios

Help with dynamic grid lighting.