DataNode
An object used internally by the Milo engine to represent a value of some type. Arrays of DataNodes are called DataArrays. In a DTB file, the type is explicitly stored, but in DTA files, it is guessed based on the syntax and keywords.
Structure
| Name | Size | Function |
|---|---|---|
| Value | 4 bytes | The value of the DataNode. |
| Type | 4 bytes | The type of the DataNode. |
Types
Each Milo game supports a different set of types for a DataNode. The amount of types gradually increased as Milo's scripting engine became more capable over the years.
Rock Band 3
| Type Name | Value | Description |
|---|---|---|
| INT | 0x0 | An integer value. |
| FLOAT | 0x1 | A 32-bit floating point value. |
| VAR | 0x2 | A generic variable. |
| FUNC | 0x3 | A function declaration. |
| OBJECT | 0x4 | A pointer to some sort of object. |
| SYMBOL | 0x5 | A pointer to a Symbol. |
| EMPTY | 0x6 | No value. |
| IFDEF | 0x7 | A conditional checking for the existence of a global macro (such as _SHIP). |
| ELSE | 0x8 | The 'else' conditional. |
| ENDIF | 0x9 | The 'endif' conditional. |
| ARRAY | 0x10 | A pointer to a DataArray. |
| COMMAND | 0x11 | Unknown. |
| STRING | 0x12 | A string value. |
| OBJECT_PROP_REF | 0x13 | A pointer to the property of an object. |
| GLOB | 0x14 | Unknown. |
| DEFINE | 0x20 | A Macro definition. |
| INCLUDE | 0x21 | A marker indicating that another DTA/DTB should be included in the current file. |
| MERGE | 0x22 | A marker indicating that another DTA/DTB should be merged into the current file. |
| IFNDEF | 0x23 | A conditional checking for the non-existence of a global macro (such as _SHIP). |
| AUTORUN | 0x24 | Unknown. |
| UNDEF | 0x25 | Undefined value. |