* Add: [Script] GSBaseStation::GetOwner
Added method for Game Scripts to retrieve the owner of a basestation.
* Cleanup: [Script] Remove ScriptStation::GetOwner
Due to class inheritance, GSStation::GetOwner and GSWaypoint::GetOwner can both reach GetOwner defined at GSBaseStation.
In the script's API `COMPANY_INVALID` has a value of -1, whereas the internal
game's `INVALID_COMPANY` has a value of 255. Since the script's API also has
a `COMPANY_SPECTATOR` with a value of 255, these enumerations cannot be easily
reconciled by casting. As such, replace all casts in the script API with
either ScriptCompany::FromScriptCompanyID or ScriptCompany::ToScriptCompanyID.
Also make clear whether CompanyID is ::CompanyID or ScriptCompany::CompanyID
by using either one of those over CompanyID in the script's API.
This allows cargo packets and cargo flow data to be empty if not in use, which is the case for the majority of station goods entries, and data is allocated when needed.
This reduces the initial size of a Station from 9192 bytes to 2024 bytes (on 64 bit platforms), although an allocation of 120 bytes is made for each active cargo type at a station.
Based on similar changes in JGRPP.
Command functions are those that call ScriptObject::Command, and functions
with company access are any that call ScriptObject::GetCompany. This is a bit
over-protective, but having the check everywhere makes it easier to validate
that no check is missing automatically instead of by review.
These are functions that either use ScriptObject::Command or ScriptObject::GetCompany.
This is a bit over-protective, but having the check everywhere makes it easier to
validate that no check is missing automatically instead of by review.
At this moment these checks will not do anything useful, as either IsValid or
IsDeity from ScriptCompanyMode returns true, but that will change later.
Direct 1:1 replacements in the code, and comments now refer to either
GSCompanyMode::IsValid or GSCompanyMode::IsDeity instead of several variations
on "company mode active" or "no company mode active".
