PlayerSettings : Bitwise operations and bitmasks

[Articron 738]

Gonna make an addition since it's been a while and there has been some talk in chat about how to apply this to player settings.

 

Let's take runecrafting pouches for an example, and how to make methods for checking if said pouch is full. The player setting 720 refers to the ingame data that is stored regarding the players pouches.

 

When only the small pouch is full, the setting reads 2, only med pouch is 8, and only full is 32;

Binary counterparts:

0b00000000000000000000000000000010 <- 2 aka small

0b00000000000000000000000000001000 <- 8 aka medium

0b00000000000000000000000000100000 <- 32 aka large

 

Now lets say the setting returns 34, so the binary is:

0b00000000000000000000000000100010

 

By this we can tell that both the large and small pouches are full. Whenever the small pouch is full, the 2nd bit is set to 1, and whenever the large pouch is full, the 6th bit is set to 1.

 

So how do we use the bitwise ops?

 

Lets take a look at isMediumPouchFull:

private boolean isMediumPouchFull() {
	return ((Settings.get(720) >> 3) & 1) == 1;
}

>> 3 means we are shifting by 3, so instead of reading

0b00000000000000000000000000001000

we are only reading 

0b00000000000000000000000000001

 

and then the mask ( & 1) means we are only reading the first bit, which in the case of the pouch being full, would be 1, and if it isn't, 0.

 

Thanks for the addition, I always forgot to add a simple demonstration myself.

Added to the original post, thx Otter

[RS Rhino 0]

Amazing thank you

 

[RS Rhino 0]

On 9/3/2016 at 10:31 AM, Articron said:

Let's take runecrafting pouches for an example, and how to make methods for checking if said pouch is full. The player setting 720 refers to the ingame data that is stored regarding the players pouches.

Articron how do I check which player setting I need to review? In this example you have used 720 but say if I want to check quest progress how do I know which player setting I will need?

[m4rr3co 67]

Sorry for reviving this topic, but how do you usually search for the pertinents settings? How do you find them?

In java, i would like to know this:

getPlayersetting.getconfig(x);

what x would be or how do you usually look for them?

[wettofu 109]

 

13 hours ago, m4rr3co said:

Sorry for reviving this topic, but how do you usually search for the pertinents settings? How do you find them?

In java, i would like to know this:

getPlayersetting.getconfig(x);

what x would be or how do you usually look for them?

 

In this situation, x would be 179, look for it in the Debug Tool -> Player Settings

[m4rr3co 67]

8 hours ago, wettofu said:

 

 

In this situation, x would be 179, look for it in the Debug Tool -> Player Settings

i'm feeling so dumb now

thanks a lot man