ExcludePartFlags Information

This is an attempt to shed some light on how to figure out what parts are being excluded by what value with the ExcludePartFlags instance.

SimGuruModSquad gave this definition at thesims.com (see the full comment HERE)

Enum and Flag are programming terms. Click the words to learn more about them.

My attempt here is to drill down the exact values to use for this field. I hope I don't confuse anyone, but if I do, please comment on this thread and I will attempt to clarify.

ONWARD!

There are 16 binary sets of 4 bits (total of 64 bits) that correspond to a hexadecimal value (See Table 2) and 72 current parts that can be excluded (list updated and changed since that post was made). Each bit refers to a single part type. There is a second ExcludePartFlags field that is for the additional bits not able to fit in the first set. This field is used for the occult, teens, and future expansion exclusions.

On to the examples!

Example 1: the base game mascot outfit the ExcludePartFlags instance is 03FFFFFFFFFFFDCE. This excludes everything except the sim's head, hair and teeth... even the eyebrows and makeup get excluded with this one!
Table 1: Instance With Binary Positions

Example 2: the base game fisherman's outfit the ExcludePartFlags instance is 0000000000001100. This excludes the shoes and necklace.

You can see on these screenshots how the numbers work together (the leading zeros were dropped by the calculator)



Are you confused yet? Lets see if I can clear it up. In the comment by SimGuruModSquad they say "HAT is 1<<1, HAIR is 1<<2, HEAD is 1<<3, etc." this means shift the binary bit to the left, one, two, and three places respectively. Start at 0 which is at the far bottom right in the screenshots above. Since there is a zero value for NONE the next place to go is the second bit, 0010.
To explain this further, look at table 3 below to see the ENUM for the shoes, its 8.
Following the above bit shifting, this means to shift the binary bit 8 places to the left = 0001 0000 0000.
The ENUM for the necklace is 12, so shift 12 places = 0001 0000 0000 0000.

When you combine these two numbers it comes out to 0001 0001 0000 0000.

OMG I'M ADDING IN BINARY?!? Yes you are!

Binary Adding With an Example:
When adding in binary it isn't like "normal" math where 1+1=2, it's more like this: 1+1=0, 1+0=1, 0+1=1, and 0+0=0. Its either a 1 or a 0, no other number value.
For our purposes we will never have a 1+1 because, as I stated earlier, each bit is a separate part type.

Example: Take the hat, binary value of 0010, and add the hair (0100), head (1000), and teeth (0001 0000). (See Table 3 for the binary values)

  0000 0010 HAT
  0000 0100 HAIR
  0000 1000 HEAD
+0001 0000 TEETH
  0001 1110

Now convert that value to Hex: 0001 1110 = 1E (See Table 2 for the conversions)

Based on this conversion, the final instance to put in the ExcludePartFlags field is 000000000000001E (leading zeros are not required since studio will add them for you) to exclude the Hat, Head, Hair, and Teeth

You want more? OK!

Let's throw EARRINGS and FACIAL HAIR into the mix!

  0000 0000 0000 0000 0000 0000 0000 0010 HAT
  0000 0000 0000 0000 0000 0000 0000 0100 HAIR
  0000 0000 0000 0000 0000 0000 0000 1000 HEAD
  0000 0000 0000 0000 0000 0000 0001 0000 TEETH
  0000 0000 0000 0000 0000 0100 0000 0000 EARRINGS
+0001 0000 0000 0000 0000 0000 0000 0000 FACIAL HAIR
  0001 0000 0000 0000 0000 0100 0001 1110

Now convert that value to Hex: 0001 0000 0000 0000 0000 0100 0001 1110 = 1000041E

Now the final instance to put in the ExcludePartFlags field is 000000001000041E to exclude the Hat, Head, Hair, Teeth, Earrings, and Facial Hair

One More Example!

Let's do SHOES, SOCKS and TIGHTS this time.

  0000 0000 0000 0000 0000 0000 0000 0000 0000 0001 0000 0000 SHOES
  0000 0000 0010 0000 0000 0000 0000 0000 0000 0000 0000 0000 SOCKS
+0100 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 TIGHTS
  0100 0000 0010 0000 0000 0000 0000 0000 0000 0001 0000 0000

Now convert that value to Hex: 0100 0000 0010 0000 0000 0000 0000 0000 0000 0001 0000 0000 = 402000000100

Now the final instance to put in the ExcludePartFlags field is 0000402000000100 to exclude the Shoes, Socks and Tights

Screenshots for proof:
Starting Sim

Hat, Head, Hair, Teeth

Hat, Head, Hair, Teeth, Earrings, Facial Hair


Table 2: Hexadecimal/Binary Conversion


Table 3: Parts List and Enum/Binary Values (Yes, it's a really loooong list )