# PositionLogger.hpp

## Namespaces

| Name                                                                                                                                    |
| --------------------------------------------------------------------------------------------------------------------------------------- |
| [**ecs**](https://github.com/TEAM-AAAAAAAAAAAAAAAA/RTYPE-TECHNICAL-DOCS/blob/main/Files/Namespaces/namespaceecs.md)                     |
| [**ecs::systems**](https://github.com/TEAM-AAAAAAAAAAAAAAAA/RTYPE-TECHNICAL-DOCS/blob/main/Files/Namespaces/namespaceecs_1_1systems.md) |

## Source code

```cpp
#pragma once

#include <functional>
#include <iostream>
#include "World.hpp"
#include "components/Position.hpp"
#include "components/Velocity.hpp"

namespace ecs::systems
{
    std::function<void(World &)> positionLogger = [](World &world) {
        auto const &positions = world.registry.getComponents<component::Position>();
        auto const &velocities = world.registry.getComponents<component::Velocity>();

        for (size_t i = 0; i < positions.size() && i < velocities.size(); ++i) {
            auto const &pos = positions[i];
            auto const &vel = velocities[i];
            if (pos && vel) {
                std ::cerr << i << ": Position = { " << pos.value().x << ", " << pos.value().y << " }, Velocity = { "
                           << vel.value().x << ", " << vel.value().y << " } " << std ::endl;
            }
        };
    };
} // namespace ecs::systems
```

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Updated on 2022-11-13 at 17:21:37 +0100