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[maze]

Hi Guy's,

I want't to save the X and Y Position of some entities, for a recall after a scene change.

I write it in global's like this: 

Code: [Select]

save_blue1X = (blue1.X);And recall it like this: 

Code: [Select]

blue1.SkipTo(save_blue1X, save_blue1Y);
It work's fine, but after I change the scene two times, in my save-global's is a null and all my entities are in the leftup border from the screen.

Thx

[Mnemonic]

Where exactly did you put these lines?

[maze]

I give you the two scripts

Saving:

Code: [Select]

#include "scripts\base.inc"
#include "scripts\keys.inc"
#include "scripts\puzzle.inc"

var yellow1 = Scene.GetNode("yellow1");
var yellow2 = Scene.GetNode("yellow2");
var yellow3 = Scene.GetNode("yellow3");
var blue1 = Scene.GetNode("blue1");
var blue2 = Scene.GetNode("blue2");
var blue3 = Scene.GetNode("blue3");

on "Keypress"
{if(Keyboard.KeyCode==VK_F5 || Keyboard.KeyCode==VK_F5)
   
{save_yellow1X = (yellow1.X); // save the peg position's
save_yellow1Y = (yellow1.Y);
save_yellow2X = (yellow2.X);
save_yellow2Y = (yellow2.Y);
save_yellow3X = (yellow3.X);
save_yellow3Y = (yellow3.Y);
save_blue1X = (blue1.X);
save_blue1Y = (blue1.Y);
save_blue2X = (blue2.X);
save_blue2Y = (blue2.Y);
save_blue3X = (blue3.X);
save_blue3Y = (blue3.Y);
Game.ChangeScene("scenes/options/options.scene"); // and load the options menu
    }
   
}
and loading:

Code: [Select]

#include "scripts\base.inc"
#include "scripts\puzzle.inc"


// here comes the stuff which initializes the scene
actor.Active = false;

// get the peg's from scene
var yellow1 = Scene.GetNode("yellow1");
var yellow2 = Scene.GetNode("yellow2");
var yellow3 = Scene.GetNode("yellow3");
var blue1 = Scene.GetNode("blue1");
var blue2 = Scene.GetNode("blue2");
var blue3 = Scene.GetNode("blue3");



if(Game.PrevScene=="options") // if we came back from options
{ yellow1.SkipTo(save_yellow1X, save_yellow1Y);
  yellow2.SkipTo(save_yellow2X, save_yellow2Y);
  yellow3.SkipTo(save_yellow3X, save_yellow3Y);
  blue1.SkipTo(save_blue1X, save_blue1Y);
  blue2.SkipTo(save_blue2X, save_blue2Y);
  blue3.SkipTo(save_blue3X, save_blue3Y);      // recover the peg's placement
 
  if (yellow1_selected == true) yellow1.PlayAnimAsync("scenes\puzzle\sprites\yellow_sel.sprite");
  if (yellow2_selected == true) yellow2.PlayAnimAsync("scenes\puzzle\sprites\yellow_sel.sprite");
  if (yellow3_selected == true) yellow3.PlayAnimAsync("scenes\puzzle\sprites\yellow_sel.sprite");
  if (blue1_selected == true) blue1.PlayAnimAsync("scenes\puzzle\sprites\blue_sel.sprite");
  if (blue2_selected == true) blue2.PlayAnimAsync("scenes\puzzle\sprites\blue_sel.sprite");
  if (blue3_selected == true) blue3.PlayAnimAsync("scenes\puzzle\sprites\blue_sel.sprite"); // recover selected peg
}

else // Init a new game
{
// peg's are not selected
yellow1_selected = false;
yellow2_selected = false;
yellow3_selected = false;
blue1_selected = false;
blue2_selected = false;
blue3_selected = false;

// peg placement
state_yellow1 = 1;
state_yellow2 = 2;
state_yellow3 = 3;
state_blue1 = 6;
state_blue2 = 7;
state_blue3 = 8;

// field's states
state_1 = true; // occupied
state_2 = true; // occupied
state_3 = true; // occupied
state_4 = false;// free
state_5 = false;// free
state_6 = true; // occupied
state_7 = true; // occupied
state_8 = true; // occupied
}


// load options
Game.AttachScript("scripts/options.script");

////////////////////////////////////////////////////////////////////////////////
// scene state
global Statepuzzle;


// default values
if(Statepuzzle==null)
{
  Statepuzzle.Visited = false;
  // add scene states here
}



////////////////////////////////////////////////////////////////////////////////
// setup scene according to state variables



////////////////////////////////////////////////////////////////////////////////
if(!Statepuzzle.Visited)
{
  Statepuzzle.Visited = true;

  // this is our first visit in this scene...
  music_on = true;
  sound_on = true;
  music_vol = 70;

}

////////////////////////////////////////////////////////////////////////////////
// Some music
if(music_on == true)
{Game.SetGlobalMusicVolume(music_vol);  // volume
if(!Game.IsMusicPlaying())  //if music is already playing, game wouldend start it new
{
Game.PlayMusic("music\bongobongo.ogg");
}
}


[Mnemonic]

And the save_yellowXX are global variables declared somewhere..? You aren't assigning them some value anywhere else, are you?

[maze]

Yes, they are declared at the puzzle.inc and I used them only in this two scripts.

Could it be cause the save-script is attached in the load script(scene_init)?

Maybe it's no big problem, cause I'm not very experienced with your wme, the only scripting languages I normaly use are for machine's.
If you want, I'll send you the whole project file.

Thanks for wasting time with me.

[Mnemonic]

If you want, I'll send you the whole project file.

If you could, it would be helpful, because I can't see anything obviously wrong with the code.

[Mnemonic]

Ah, got it. The F5 code should look like this:

Code: WME Script

1. #include "scripts\base.inc"
2. #include "scripts\keys.inc"
3. #include "scripts\puzzle.inc"
4.  
5. on "Keypress"
6. {
7.   if(Keyboard.KeyCode==VK_F5 || Keyboard.KeyCode==VK_F5)   
8.   {
9.     var yellow1 = Scene.GetNode("yellow1");
10.     var yellow2 = Scene.GetNode("yellow2");
11.     var yellow3 = Scene.GetNode("yellow3");
12.     var blue1 = Scene.GetNode("blue1");
13.     var blue2 = Scene.GetNode("blue2");
14.     var blue3 = Scene.GetNode("blue3");
15.  
16.     save_yellow1X = (yellow1.X);        // save the peg position's
17.     save_yellow1Y = (yellow1.Y);
18.     save_yellow2X = (yellow2.X);
19.     save_yellow2Y = (yellow2.Y);
20.     save_yellow3X = (yellow3.X);
21.     save_yellow3Y = (yellow3.Y);
22.     save_blue1X = (blue1.X);
23.     save_blue1Y = (blue1.Y);
24.     save_blue2X = (blue2.X);
25.     save_blue2Y = (blue2.Y);
26.     save_blue3X = (blue3.X);
27.     save_blue3Y = (blue3.Y);
28.     Game.ChangeScene("scenes/options/options.scene"); // and load the options menu
29.   }   
30. }
31.  

That is, you need to query the scene entities before checking their properties.

In your code, you fill the yellow1-3 and blue1-3 variables with entities. That's fine. You remember their positions. Also fine. You change scene, the entities get destroyed. But once they're destroyed, WME also automatically invalidates your variables (they'd be referencing non-exisisting entities).
Now you return back from the menu, a new set of entities is created. But when you press F5 for the second time, you're still using the old invalidated variables. That's why you get 'null' when reading their positions.

[maze]

  Thanx to the king of code.
I'll never figure this out by myself.
It's good to know, now I understand wme a little bit more.
Once this little game is finished, I'll give it to the wme community as open source, but I think this will take a while.
Did you like it, or is it terrible circular coded?

[Mnemonic]

I liked what I saw, but frankly I didn't have the time to check it thoroughly