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OBD:Instance file format: Difference between revisions
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You'll notice that the level file header lists fewer names (7,124) than instances (9,347). That's because there are 3 types of instance: | You'll notice that the level file header lists fewer names (7,124) than instances (9,347). That's because there are 3 types of instance: | ||
*Unnamed and not empty - they are only referenced by other instances in the same file, generally as child data (e.g., 3D geometry elements like ABNA are "contained" by AKEV, a level's environment). | *Unnamed and not empty - they are only referenced by other instances in the same file, generally as child data (e.g., 3D geometry elements like ABNA are "contained" by AKEV, a level's environment). | ||
*:In vanilla Oni .dats there are some rare occurrences of unnamed non-empty ''orphan'' instances (e.g., [[OBD: | *:In vanilla Oni .dats there are some rare occurrences of unnamed non-empty ''orphan'' instances (e.g., [[OBD:File types/Naming#TRCM|TRCM]]). These are a form of garbage and are discarded by OniSplit when unpacking a level. | ||
*Named and not empty - they can be referenced by other instances in any file and the engine can use their name or template tag to find them. | *Named and not empty - they can be referenced by other instances in any file and the engine can use their name or template tag to find them. | ||
*Named and empty - "empty" instances are used in level-specific instance files (i.e. not in level0_Final.dat) to associate an instance ID with a name. For every empty resource, there's another one with a matching name in level0_Final.dat that has data in it. The empty resource in the instance file is (usually) looked up by ID, then the engine searches all the loaded files for a non-empty instance with the same name, causing it to find the actual file in the global data in level0_Final.dat. | *Named and empty - "empty" instances are used in level-specific instance files (i.e. not in level0_Final.dat) to associate an instance ID with a name. For every empty resource, there's another one with a matching name in level0_Final.dat that has data in it. The empty resource in the instance file is (usually) looked up by ID, then the engine searches all the loaded files for a non-empty instance with the same name, causing it to find the actual file in the global data in level0_Final.dat. | ||