document.write("
// Fill out your copyright notice in the Description page of Project Settings.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Dandelion/Sandbox/Abilities/InputActionGameplayAbility.h"
#include "IAGA_PlayerMove.generated.h"
 
namespace EPathFollowingResult
{
	enum Type : int;
}
 
class UAbilityTask_MoveCharacterToCursor;
class UAbilityTask_FollowCursor;
 
/**
 * Custom IAGA that implements player movement. Has two phases.
 * - Phase 1: While the mouse button is held down, follow the cursor using a UAbilityTask_FollowCursor.
 * - Phase 2: When the mouse button is released, use the nav system to move to the point that was under the cursor when
 * released using a UAbilityTask_MoveCharacterToCursor.
 * When the target point is reached in Phase 2, end the GA. This GA cannot be restarted during Phase 1.
 * TODO: What happens if there isn't a valid point under the cursor upon release? Can the release callback come before ActivateAbility?
 */
UCLASS()
class DANDELION_API UIAGA_PlayerMove : public UInputActionGameplayAbility
{
	GENERATED_BODY()
 
	/**
	 * Sets the response on pressed mode to cancel so that new move inputs will override current move targets/behavior
	 * and on release mode to Custom so the ability will only end when the final move to point is reached.
	 */
	UIAGA_PlayerMove();
 
	/**
	 * Custom restart handler that prevents this GA from being restarted by an input press unless it is in Phase 2 with
	 * an active UAbilityTask_MoveCharacterToCursor. This is to prevent constant re-triggering of the GA during Phase 1. 
	 * TODO: Probably a better way to handle this would be to unbind from InputPressed on the ASC so this isn't getting
	 * called every frame while the button is held down.
	 * @param Handle Handle of the GameplayAbilitySpec that woudl be restarted on success.
	 * @param ActorInfo Actor Info for the activation of this ability.
	 * @param ActivationInfo Networking data related to the activation of this ability.
	 * @return 
	 */
	virtual bool CanRestartAbility(
		const FGameplayAbilitySpecHandle Handle,
		const FGameplayAbilityActorInfo* ActorInfo,
		const FGameplayAbilityActivationInfo& ActivationInfo
	) override;
 
protected:
	/**
	 * Stops any currently ongoing movement and starts a follow cursor task. If the target location is reached, end this
	 * ability.
	 * @param Handle Handle of the GameplayAbilitySpec that was activated.
	 * @param ActorInfo Actor Info for the activation of this ability.
	 * @param ActivationInfo Networking data related to the activation of this ability.
	 * @param TriggerEventData The FGameplayEventData that accompanied the activation of this ability.
	 */
	virtual void ActivateAbility(
		const FGameplayAbilitySpecHandle Handle,
		const FGameplayAbilityActorInfo* ActorInfo,
		const FGameplayAbilityActivationInfo ActivationInfo,
		const FGameplayEventData* TriggerEventData
	) override;
 
	/**
	 * Cancels FollowCursorAbilityTask and MoveCharacterToCursorAbilityTask if they are currently active.
	 * @param Handle Handle of the GameplayAbilitySpec that was ended.
	 * @param ActorInfo Actor Info for the ending of this ability.
	 * @param ActivationInfo Networking data that was originally related to the activation of this ability.
	 * @param bReplicateCancelAbility Whether the cancel of this ability needs to be replicated to the client/server.
	 */
	virtual void CancelAbility(
		const FGameplayAbilitySpecHandle Handle,
		const FGameplayAbilityActorInfo* ActorInfo,
		const FGameplayAbilityActivationInfo ActivationInfo,
		bool bReplicateCancelAbility
	) override;
 
	/**
	 * Ends FollowCursorAbilityTask and MoveCharacterToCursorAbilityTask if they are currently active. They should have
	 * been cleaned up already, however.
	 * @param Handle Handle of the GameplayAbilitySpec that was ended.
	 * @param ActorInfo Actor Info for the ending of this ability.
	 * @param ActivationInfo Networking data that was originally related to the activation of this ability.
	 * @param bReplicateEndAbility Whether the ending of this ability needs to be replicated to the client/server.
	 * @param bWasCancelled Whether this ability was cancelled or if it ended naturally.
	 */
	virtual void EndAbility(
		const FGameplayAbilitySpecHandle Handle,
		const FGameplayAbilityActorInfo* ActorInfo,
		const FGameplayAbilityActivationInfo ActivationInfo,
		bool bReplicateEndAbility,
		bool bWasCancelled
	) override;
 
	/**
	 * When the InputID is released, stop the ongoing follow cursor task (if valid), and raise the GameplayTag for the
	 * MoveVFX Gameplay Cue.
	 * @param Handle Handle of the GameplayAbilitySpec whose InputID was released.
	 * @param ActorInfo Actor Info for the release of the input of this ability.
	 * @param ActivationInfo Networking data that was originally related to the activation of this ability. 
	 */
	virtual void HandleInputReleased_Implementation(
		const FGameplayAbilitySpecHandle& Handle,
		const FGameplayAbilityActorInfo& ActorInfo,
		const FGameplayAbilityActivationInfo& ActivationInfo
	) override;
 
private:
	/**
	 * The GameplayTag for the MoveVFX GameplayCue.
	 */
	UPROPERTY(
		EditDefaultsOnly,
		DisplayName="Move VFX Cue Tag",
		meta=(AllowPrivateAccess=true, Categories="GameplayCue.VFX")
	)
	FGameplayTag MoveVFXCueTag;
 
	/**
	 * Owned reference of the UAbilityTask_FollowCursor to ensure cleanup when this Ability ends.
	 */
	UPROPERTY(Transient)
	TObjectPtr<UAbilityTask_FollowCursor> FollowCursorAbilityTask;
 
	/**
	 * Owned reference of the MoveCharacterToCursorAbilityTask to ensure cleanup when this Ability ends.
	 */
	UPROPERTY(Transient)
	TObjectPtr<UAbilityTask_MoveCharacterToCursor> MoveCharacterToCursorAbilityTask;
 
	/**
	 * Gets bound to the OnMoveComplete delegate on the MoveCharacterToCursorAbilityTask. If the move request to the
	 * NavSystem was successful, end the task and GA using EndTask/EndAbility. If it was not, cancel the task and GA
	 * using CancelTask/CancelAbility.
	 * @param PathingResultType 
	 */
	UFUNCTION(meta=(BlueprintInternalUseOnly))
	void HandleOnMoveComplete(EPathFollowingResult::Type PathingResultType);
};
IAGA_PlayerMove.h - Snippet hosted by \"Cacher\"
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