Populating a C array with from an AS3_Val

Question

When receiving an array from flash, in C, how do I populate that array when its size isn't constant but the values types are?

In Alchemy's documentation, the example given is:

S3_ArrayValue(arr, "IntType, StrType, DoubleType", &arg0, &arg1, &arg2);

But this means that if I my array is of size 100, I need to create a string describing each of the cells types.

Isn't there a way to populate it by saying something like "fill the following 'int * array', with the first 100 value from this AS3_Val int array?"

score 0 · Accepted Answer · answered Dec 24 '10 at 10:09

The n^th element of an AS3 Array can be accessed via a property who's name is equal to n.

For example, this will trace 9001:

var arr:Array = new Array();
arr[47] = 9001;
trace( arr["47"] );

You can exploit this behaviour to gain random access to an AS3 Array from Alchemy:

AS3_Val arr = AS3_Array("");
AS3_SetS(arr, "47", AS3_Int(9001));
AS3_Trace( AS3_GetS(arr, "47") );

For random access, you'll need to convert the index to a string:

AS3_Val AS3_ArrayGet(AS3_Val arr, int index) {
  if (index >= 0) {
    // static_assert(sizeof(int) <= 4);
    char buffer[11];
    return AS3_GetS(arr, itoa(index, buffer, 10));
  }
  return AS3_Undefined();
}

void AS3_ArraySet(AS3_Val arr, int index, AS3_Val val) {
  if (index >= 0) {
    // static_assert(sizeof(int) <= 4);
    char buffer[11];
    AS3_SetS(arr, itoa(index, buffer, 10), val);
  }
}

Something like that.

Populating a C array with from an AS3_Val

1 Answers1