src/animation/blend_state_1d.cpp

#include "rive/animation/blend_state_1d.hpp"
#include "rive/animation/state_machine.hpp"
#include "rive/animation/state_machine_number.hpp"
#include "rive/animation/blend_state_1d_instance.hpp"
#include "rive/importers/state_machine_importer.hpp"

using namespace rive;

std::unique_ptr<StateInstance> BlendState1D::makeInstance() const {
    return std::make_unique<BlendState1DInstance>(this);
}

StatusCode BlendState1D::import(ImportStack& importStack) {
    auto stateMachineImporter =
        importStack.latest<StateMachineImporter>(StateMachine::typeKey);
    if (stateMachineImporter == nullptr) {
        return StatusCode::MissingObject;
    }
    // A negative inputId means it wasn't set, we actually allow this as the
    // editor does too.
    if (inputId() >= 0) {
        // Make sure the inputId doesn't overflow the input buffer.
        if ((size_t)inputId() >= stateMachineImporter->stateMachine()->inputCount()) {
            return StatusCode::InvalidObject;
        }
        auto input =
            stateMachineImporter->stateMachine()->input((size_t)inputId());
        if (input == nullptr || !input->is<StateMachineNumber>()) {
            return StatusCode::InvalidObject;
        }
    }
    return Super::import(importStack);
}