Movement.cpp

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#include <VoltMod/Hooks/Movement.hpp>
#include <utility>
 
namespace VoltMod
{
 
Movement::Movement(const Bindings& bindings, Connector connect)
    : _hook("Movement", [this] { return Install(); }),
      Rewrite(_hook.ForEvent()),
      Before(_hook.ForEvent()),
      After(_hook.ForEvent()),
      _bindings(bindings),
      _connect(std::move(connect))
{}
 
Result<Subscription> Movement::Install()
{
    if (Status available = Available(); !available)
    {
        return std::unexpected(available.error());
    }
    return _connect(*this);
}
 
Status Movement::Available() const
{
    if (!_bindings.RunCommand)
    {
        return std::unexpected(Error::Unsupported("the CPlayer_MovementServices::RunCommand vtable slot did not bind"));
    }
    if (!_bindings.UserCmdProto)
    {
        return std::unexpected(Error::Unsupported("the CUserCmd::CSGOUserCmdPB offset did not bind"));
    }
    return {};
}
 
void Movement::BeforeCommand(int slot, const PlayerInput& input)
{
    // Every plugin sees the host's decode; only a rewrite needs a copy of its own.
    if (Rewrite.Empty())
    {
        _rewritten.reset();
        Before.Raise(slot, input);
        return;
    }
    _rewritten = input;
    Rewrite.Raise(slot, *_rewritten);
    Before.Raise(slot, *_rewritten);
}
 
void Movement::AfterCommand(int slot, const PlayerInput& input)
{
    After.Raise(slot, _rewritten ? *_rewritten : input);
}
 
}  // namespace VoltMod