Spawn Waves of Enemies
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What You Will Build
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Step 1: Bind the Events
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Step 2: Test in Play In Editor
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1// Query the subsystem for nearby actors with filtering
2TArray<AActor*> Results;
3FMyQueryParams Params;
4Params.Origin = GetActorLocation();
5Params.Radius = 1000.0f;
6Params.MaxResults = 10;
7Params.bIncludeHidden = false;
8Params.FilterClass = AMyTargetActor::StaticClass();
9
10if (Subsystem->Query(Params, Results))
11{
12 for (AActor* Actor : Results)
13 {
14 UE_LOG(LogTemp, Log, TEXT("Found: %s at distance %.1f"),
15 *Actor->GetName(),
16 FVector::Dist(Params.Origin, Actor->GetActorLocation()));
17 }
18}
Step 3: Expose Values to Designers
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Step 4: Handle the Edge Cases
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- Initialize: Call once during BeginPlay to set up internal state
- Configure: Pass a configuration struct or Data Asset reference
- Activate: Enable the component to begin processing
- Query: Perform spatial or logical queries against the managed data
- Deactivate: Temporarily stop processing without losing state
- Teardown: Clean up resources during EndPlay
Next Steps
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