Services

[gamecoder-nz]

What is a service? Is that another name for a system?

[skypjack]

Do you mean service as in service locator? In this case, it's a well known pattern (see here for an example). Definitely not invented here. 🙂

[gamecoder-nz]

Ah I see. Is there an example of how it is used with entt?

…

On Tue, Mar 8, 2022 at 8:33 PM Michele Caini ***@***.***> wrote: Do you mean *service* as in *service locator*? In this case, it's a well known pattern (see here <https://gameprogrammingpatterns.com/service-locator.html> for an example). Definitely not invented here. 🙂 — Reply to this email directly, view it on GitHub <#852 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AKHPB7VH6EYXOXMV4QP6RHLU637FPANCNFSM5QESAZUQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>. You are receiving this because you authored the thread.Message ID: ***@***.***>

[gamecoder-nz]

I figured it out. If anyone needs an example:

#include <iostream>
#include <entt/entt.hpp>

using namespace std;

class Audio
{
public:
  virtual ~Audio() {}
  virtual void playSound(int soundID) = 0;
  virtual void stopSound(int soundID) = 0;
  virtual void stopAllSounds() = 0;
};

class ConsoleAudio : public Audio
{
public:
  virtual void playSound(int soundID)
  {
    printf("Play sound\n");
  }

  virtual void stopSound(int soundID)
  {
    printf("Stop sound\n");
  }

  virtual void stopAllSounds()
  {
    printf("Stop all sounds\n");
  }
};

int main()
{
    entt::locator<Audio>::emplace<ConsoleAudio>();
    Audio &service = entt::locator<Audio>::value();
    service.playSound(0);
    return 0;
}

[skypjack]

Timezone differences help sometimes. 🙂