Hello
I would like to know how to change an image to a map in world by clicking on it
thanks in advance
ronald wrote ...
2021/11/9
BINARY
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2
GreenfootImage [] images = {new GreenfootImage("button-green.png"), new GreenfootImage("button-blue.png")};
int map[][] = ((MyWorld) getWorld()).map;
public void act()
{
for (int i = 0; i < images.length; i++)
{
for (int j = 0; j < images.length; j++)
{
if (Greenfoot.mouseClicked(this) && map[j][i] == 0)
{
MyWorld world = (MyWorld) getWorld();
Greenfoot.setWorld(world);
world.level();
setImage(images[0]);
}
else if (Greenfoot.mouseClicked(this) && map[j][i] == 1)
{
MyWorld world = (MyWorld) getWorld();
Greenfoot.setWorld(world);
world.level();
setImage(images[1]);
}
}
}
}maybe I'm wrong
as the images are in actor, it may be necessary to access the actor classes, oops I'm a little confused
@ronald,
* line 4 will fail as getWorld will return null during the assignment of the field.
* these lines (used twice)
do absolutely nothing. You are getting the currently active world and telling greenfoot to make it the active world (which it already is).
* you should probably check for mouse click first:
* not sure why you included loops at all. Only one image will eventually be assigned to the actor.
MyWorld world = (MyWorld) getWorld(); Greenfoot.setWorld(world);
public void act()
{
if (!Greenfoot.mouseClicked(this)) return; //(no click -- do nothing)
...GreenfootImage [] images =
{
new GreenfootImage("button-green.png"),
new GreenfootImage("button-blue.png")
};
public void act()
{
if (Greenfoot.mouseClicked(this)) setImage(images[getImage() == images[1] ? 0 : 1]);
}public class MyWorld extends World
{
/**
* Constructor for objects of class MyWorld.
*
*/
int map[][] = {
{0,0,0,0,0,0,1,0,1,0,1,0,1,0,0,0,0,0,0,0,0,0,0},
{0,0,1,0,1,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,1,0,0},
{1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,1,0,1,1,0,0,1,0},
{1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,0,1,0,0,1,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,1,1,0,1,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,1,1,0,1,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,1,0,1,0,1,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{1,1,0,0,0,0,1,1,1,0,0,0,1,1,0,0,0,0,1,1,0,0,0},
{1,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,1,0,0,0,0},
{1,1,0,1,0,0,0,1,1,0,0,0,1,1,0,0,0,0,1,1,0,1,0},
{1,1,1,1,1,0,1,1,1,1,1,0,1,1,1,1,1,0,1,1,1,1,1},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{1,1,0,0,0,0,1,1,0,0,0,0,1,1,1,0,0,0,1,1,0,0,0},
{1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,0,0,0},
{1,1,0,1,0,0,0,0,1,1,0,0,0,1,1,1,0,0,1,1,0,1,0},
{1,1,1,1,1,0,1,1,1,1,1,0,1,1,1,1,1,0,1,1,1,1,1},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,1,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,1,0},
{0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,1,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,1},
{1,1,1,1,1,0,0,0,0,0,1,1,0,0,0,0,0,0,1,1,1,1,1},
{0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0},
{0,0,1,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,1,0,0},
{0,0,0,1,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,1,0,0,0},
{0,0,0,0,1,1,0,0,0,0,1,1,0,0,0,0,0,0,1,0,0,0,0},
{0,0,0,0,0,0,1,1,0,0,0,1,0,0,0,0,1,1,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,1,1,0,1,1,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,1,1,0,0,0,1,0,0,0,0,1,1,0,0,0,0,0},
{0,0,0,0,1,1,0,0,0,0,1,1,0,0,0,0,0,0,1,0,0,0,0},
{0,0,0,1,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,1,0,0,0},
{0,0,1,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,1,0,0},
{0,1,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,1,0,0},
{0,1,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0},
{0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0},
{0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0},
{0,0,0,0,1,1,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0},
{0,0,1,0,0,0,1,1,1,0,1,0,1,1,0,0,0,0,0,0,0,0,0},
{0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,1,0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0},
{0,0,1,0,0,0,0,1,0,1,1,1,0,1,0,0,1,0,1,1,0,1,1},
{0,0,0,0,0,0,1,0,0,1,1,1,0,0,1,0,0,1,1,1,1,1,1},
{1,0,1,1,1,0,0,0,0,1,1,1,0,0,0,0,0,1,1,0,1,1,1},
{0,0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,1,1,1,0,1,1},
{0,0,1,0,0,0,0,0,0,1,0,1,0,0,0,0,0,1,1,1,1,1,1},
{0,0,1,0,0,0,0,0,0,1,0,1,0,0,0,0,0,1,1,0,0,0,0},
{0,0,1,0,0,0,0,0,1,1,0,1,1,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,1,1,1,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0},
{0,0,1,1,1,0,1,0,1,0,0,0,1,0,1,0,1,0,1,0,1,0,1},
{0,0,1,1,1,0,0,0,0,0,0,0,0,0,1,0,1,0,1,0,1,0,0},
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0},
{0,0,0,0,1,1,1,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0},
{0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0},
{0,0,1,1,0,1,0,0,0,0,0,0,0,0,0,1,0,1,1,0,0,0,0},
{0,1,1,0,0,1,1,0,0,0,0,0,0,0,1,1,0,0,1,1,0,0,0},
{0,1,0,0,0,1,0,1,0,0,0,0,0,1,0,1,0,0,0,1,0,0,0},
{0,1,0,0,0,1,0,0,1,0,0,0,1,0,0,1,0,0,0,0,0,0,0},
{0,0,0,0,0,1,0,0,0,1,0,1,0,0,0,1,0,0,0,0,0,0,0},
{0,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,0,0,0},
{0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,1,0,0,1,0,1,0,0,0,0,0,0,0,0,0,0},
{0,1,1,1,1,0,0,1,1,1,1,1,0,1,0,0,1,1,1,1,0,0,0},
};
public MyWorld()
{
super(900, 2700, 1);
level();
}
public void level()
{
for (int i = 0; i < 23; i++)
{
for (int j = 0; j < 73; j++)
{
if (map[j][i] == 0)
{
addObject(new Binary0(), 30+i*35, 30+j*35);
}
}
}
for (int i = 0; i < 23; i++)
{
for (int j = 0; j < 73; j++)
{
if (map[j][i] == 1)
{
addObject(new Binary1(), 30+i*35, 30+j*35);
}
}
}
}
}Use just one Actor subclass for Binary objects. Or, don't use any at all and just draw onto the background image. You can still determine where a click occurs and change the map and the image:
public void drawBinary(int x, int y)
{
GreenfootImage img = new GreenfootImage(" "+map(x, y)+" ", 24, Color.WHITE, Color.BLACK);
getBackground().drawImage(img, 30+35*x, 30+35*y);
}
public MyWorld()
{
super(900, 2700, 1);
for (int i=0; i<23; i++) for (int j=0; j<73; j++) drawBinary(i, j);
}
public void act()
{
if (Greenfoot.mouseClicked(this))
{
MouseInfo mi = Greenfoot.getMouseInfo();
int x = (mi.getX()-30)/35, y = (mi.getY()-30)/35;
map[y][x] = (map[y][x]+1)%2;
drawBinary(x, y);
}
}well uh
I'm having a little trouble with your code
I draw in the world class if I don't use images (numero-0.png, numero-1png) in the actor class and the images (button-blue.png, button-green.png) go in the world class
and to replace the binaries with the blue and green buttons
i use getbackground with greenfoot.mouseclicked ???
map (x, y) in the drawBinary method is an undeclared method
ok i found the error
it is not map (x, y) but map array y x in the drawBinary method
There
interesting your code the 1 turn into 0 and the 0 into 1
do you know what the drawing in 0 and 1 represents?
have you heard of the arecibo plaque?
not easy to recognize the design of the arecibo plaque
d or the idea of replacing the 0 and 1 with green or blue buttons or white and black rectangles
ronald wrote...
interesting your code the 1 turn into 0 and the 0 into 1
do you know what the drawing in 0 and 1 represents?
have you heard of the arecibo plaque?
not easy to recognize the design of the arecibo plaque
d or the idea of replacing the 0 and 1 with green or blue buttons or white and black rectanglesprivate GreenfootImage [] images =
{
new GreenfootImage("button-green.png"),
new GreenfootImage("button-blue.png")
};
private void drawBinary(int x, int y)
{
getBackground().drawImage(images[map[y][x]], 30+35*x, 30+35*y);
}There are more replies on the next page.
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