103 lines
2.2 KiB
C++
Executable File
103 lines
2.2 KiB
C++
Executable File
// Fill out your copyright notice in the Description page of Project Settings.
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#include "EnemyAIController.h"
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#include "EngineUtils.h"
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#include "DrawDebugHelpers.h"
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#include "Util.h"
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#define LogInfo(Msg) Util::log_info(TEXT("AEnemyIController"), Msg)
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#define LogError(Msg) Util::log_error(TEXT("AEnemyIController"), Msg)
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void AEnemyAIController::Tick(float delta_time)
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{
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Super::Tick(delta_time);
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switch(current_state)
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{
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case state_t::init:
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president = get_president();
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if (president)
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{
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current_state = state_t::wait;
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}
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break;
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case state_t::wait:
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waiting_time += delta_time;
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if (waiting_time > wait_threshold)
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{
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waiting_time = 0;
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current_state = state_t::target;
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}
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break;
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case state_t::target:
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if (!president)
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{
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current_state = state_t::init;
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}
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else
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{
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FVector target_location = president->get_location();
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FVector current_location = Cast<ABasePawn>(GetPawn())->get_location();
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FVector between = target_location - current_location;
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between = FVector(between.X, between.Y, 0);
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between.Normalize();
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FVector extended = (between * overshoot_multiplier) + target_location;
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MoveToLocation(extended);
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current_state = state_t::moving;
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}
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break;
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case state_t::moving:
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if (move_completed)
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{
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move_completed = false;
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current_state = state_t::wait;
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}
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break;
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default:
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/*
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* Do nothing.
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*/
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break;
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}
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}
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void AEnemyAIController::OnMoveCompleted(FAIRequestID request_id, const FPathFollowingResult& result)
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{
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move_completed = true;
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}
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/**
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* Helper function to find president in level.
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*/
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ABasePawn* AEnemyAIController::get_president() const
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{
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ABasePawn* found = nullptr;
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for (TActorIterator<AActor> iterator(GetWorld()); iterator; ++iterator)
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{
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AActor* actor = *iterator;
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if (actor && actor != this)
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{
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UClass* actor_class = actor->GetClass();
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if (actor_class == (*president_class))
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{
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if (found)
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{
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LogError("Multiple presidents found!");
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break;
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}
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found = Cast<ABasePawn>(actor);
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}
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}
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}
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if (!found)
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{
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LogError("No president found!");
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}
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return found;
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}
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