SpectatorCameraSystem handles the overwatch cameras. Set camera to a class pick screen when connecting. Cannot spawn until both team and class has been picked.

Preparations for class aware PlayerSpawnSystem.

src/Game/Systems/SpectatorCameraSystem.cpp

@@ -0,0 +1,66 @@
+#include "Systems/SpectatorCameraSystem.h"
+#include "Rendering/ESetCamera.h"
+
+SpectatorCameraSystem::SpectatorCameraSystem(SystemParams params)
+    : System(params)
+    , m_CamSetToTeamPick(false)
+    , m_PickedTeam(-1)
+{
+    EVENT_SUBSCRIBE_MEMBER(m_EInputCommand, &SpectatorCameraSystem::OnInputCommand);
+}
+
+void SpectatorCameraSystem::Update(double dt)
+{
+    if (!m_CamSetToTeamPick && IsClient) {
+        // Find the class pick camera and set them to it, since they need to pick a team before they can leave the screen.
+        EntityWrapper spectatorCam = m_World->GetFirstEntityByName("PickTeamCamera");
+        if (spectatorCam.Valid() && spectatorCam.HasComponent("Camera")) {
+            m_CamSetToTeamPick = true;
+            Events::SetCamera eSetCamera;
+            eSetCamera.CameraEntity = spectatorCam;
+            m_EventBroker->Publish(eSetCamera);
+        }
+    }
+}
+
+bool SpectatorCameraSystem::OnInputCommand(const Events::InputCommand& e)
+{
+    // Only the client should do this, and only if player is not spawned.
+    if (!IsClient || LocalPlayer.Valid()) {
+        return false;
+    }
+    bool swapToClass = e.Command == "PickTeam" || e.Command == "SwapToClassPick";
+    if (e.Value == 0 || !swapToClass && e.Command != "SwapToTeamPick" && e.Command != "PickClass") {
+        return false;
+    }
+
+    if (e.Command == "PickTeam") {
+        m_PickedTeam = e.Value;
+    }
+
+    // If a team has not been picked, they may not exit the pick team screen.
+    if (m_PickedTeam == -1) {
+        return false;
+    }
+
+    // A dead client should be able to swap to and between the overwatch cameras.
+    std::string camName;
+    // TODO: 1 Signifies spectator, should probably have real enum here later.
+    // Spectators should never end up at the class select, instead put them at the SpectatorCamera.
+    if (swapToClass && m_PickedTeam != 1) {
+        camName = "PickClassCamera";
+    } else if (e.Command == "SwapToTeamPick") {
+        camName = "PickTeamCamera";
+    } else {
+        camName = "SpectatorCamera";
+    }
+    EntityWrapper spectatorCam = m_World->GetFirstEntityByName(camName);
+    // Set the camera as active, if it exists.
+    if (spectatorCam.Valid() && spectatorCam.HasComponent("Camera")) {
+        Events::SetCamera eSetCamera;
+        eSetCamera.CameraEntity = spectatorCam;
+        m_EventBroker->Publish(eSetCamera);
+    }
+
+    return true;
+}