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Instance addons
Instance addons represent instances of Minecraft itself, while non-instance addons
have to be installed into an existing instance of Minecraft. An instance addon MUST have
a launch configuration for each side by inheriting the launch configuration of another
instance addon or Minecraft itself using the launch flag.
Inheriting a launch configuration MAY be recursive which
means, that an instance addon MAY inherit it's launch configuration from another addon, which
itself inherits it. Instance addons MAY modify inherited launch configurations using a
launch config object by overriding the main file or main class, or by
adding libraries or launch arguments. Inheriting a launch configuration also includes any
modifications to it.
Instance addons as relations
If an instance addon is a relation of another instance addon, each side of that
relation MUST have at least one of the flags included, launch, env
or incompatible. Non-instance addons MAY have instance addons as relations without
this restriction.
Launch configurations
Instance launch configurations are always based on a Minecraft launch config and MAY have modifications applied to it. Modifications are done by launch config objects and can override the main class or main file and include additional libraries and arugments. When launching a Minecraft instance, AddonScript implementations SHOULD take the Minecraft launch configuration as specified here and then apply all modifications by instance addons in the instance stack to it. When overriding the main class or file, an instance addon has always priority over the instance addon, from which it inherits the launch config. When adding arguments, they are always appended at the end of those arguments from the inherited launch config.