GameMaker Randomized grid game (help)

[Fadi Nahhas]

I'm trying to make a minigame that randomly places 25 symbols in a 5x5 grid
and it randomly chooses 4 of the symbols for the user to try to find in the grid within a certain amount of seconds.

 

[TailBit]

let's say you got sprite spr_symbol with all 25 subimages as each symbol

- you can then make a ds_list
- use a loop to add the numbers 0-24 into it
- then do ds_list_shuffle
- you now read the first 4 of those into a separate list
- then do ds_list_shuffle again
- now .. the cards could be already laid out, then you could tell all of them:

with(obj_tile){
    image_index = other.list[| 0]; // set my image_index as the symbol of the top of the list
    ds_list_delete(other.list,0); // delete the symbol at the top of the list, so that the next tile gets the next
}

or create them as you read through em:

var i,a;
for(i=0;i<25;i++){
    a=instance_create(obj_tile, (i div 5) * 32, (i mod 5) * 32); // div and mod is very handy to go through all the grid positions with a single variable
    a.image_index = list[| i]; // then just pass over the symbol
}

- then delete the list

obj_tile would have image_speed set to 0 in the create event

Then you just have to check if the clicked image_index exists in the list of cards you should find..

Oh, you might need to do randomize() early in the game, or it will be using a default seed all the time and the shuffle results will be the same.

Hope that will help you get started[/CODE]

 

[Fadi Nahhas]

let's say you got sprite spr_symbol with all 25 subimages as each symbol

- you can then make a ds_list
- use a loop to add the numbers 0-24 into it
- then do ds_list_shuffle
- you now read the first 4 of those into a separate list
- then do ds_list_shuffle again
- now .. the cards could be already laid out, then you could tell all of them:

with(obj_tile){
    image_index = other.list[| 0]; // set my image_index as the symbol of the top of the list
    ds_list_delete(other.list,0); // delete the symbol at the top of the list, so that the next tile gets the next
}

or create them as you read through em:

var i,a;
for(i=0;i<25;i++){
    a=instance_create(obj_tile, (i div 5) * 32, (i mod 5) * 32); // div and mod is very handy to go through all the grid positions with a single variable
    a.image_index = list[| i]; // then just pass over the symbol
}
- then delete the list

obj_tile would have image_speed set to 0 in the create event

Then you just have to check if the clicked image_index exists in the list of cards you should find..

Oh, you might need to do randomize() early in the game, or it will be using a default seed all the time and the shuffle results will be the same.

Hope that will help you get started

Thank you so much, i didnt know about the ds list. makes it way easier.

im having a bit of trouble with the instance_create function, keep getting an error that variable is not set. is there a different command/function for it?

 

[TailBit]

Sorry, instance_create_depth or instance_create_layer is what you must use .. I haven't made much instances since this version

 

[Fadi Nahhas]

Sorry, instance_create_depth or instance_create_layer is what you must use .. I haven't made much instances since this version

i did the instance_create_layer, it works but it spams the instances which causes the game to crash.
and it doesnt working if i put in inside the create event.


Edit: nvm got it to work. thank you so much