almost implemented attack (using projectiles)

Source/TurnBasedTutorial/Ability.h

@@ -33,6 +33,9 @@ public:
     UPROPERTY(EditAnywhere)
     float LinearWidth = 50.0f;
 
+    UPROPERTY(EditAnywhere)
+    float Speed = 1500.0f;
+    
     // Called every frame
     // virtual void TickComponent(float DeltaTime,
     //                            ELevelTick TickType,

Source/TurnBasedTutorial/MyGameState.cpp

@@ -62,6 +62,10 @@ AMyPlayerState *AMyGameState::PlayerNotInTurn() const {
     return GetMyPlayerState(!CurrentPlayerTurn);
 }
 
+TArray<ATrooper *> AMyGameState::GetTroopers() const {
+    return Troopers;
+}
+
 void AMyGameState::GetLifetimeReplicatedProps(
     TArray<FLifetimeProperty> &OutLifetimeProps) const {
     Super::GetLifetimeReplicatedProps(OutLifetimeProps);

Source/TurnBasedTutorial/MyGameState.h

@@ -32,7 +32,8 @@ public:
     UFUNCTION(BlueprintPure)
     AMyPlayerState *PlayerNotInTurn() const;
     
-    auto GetMyPlayerState(uint8 PlayerIndex) const;
+    UFUNCTION()
+    TArray<ATrooper *> GetTroopers() const;
 
 private:
     UPROPERTY(Replicated)
@@ -41,4 +42,5 @@ private:
     UPROPERTY(Replicated)
     uint8 CurrentPlayerTurn{0};
     
+    auto GetMyPlayerState(uint8 PlayerIndex) const;
 };

Source/TurnBasedTutorial/MyPlayerState.cpp

@@ -15,6 +15,10 @@ void AMyPlayerState::BeginPlay() {
     Super::BeginPlay();
 }
 
+auto AMyPlayerState::GetMyGameState() const {
+    return Cast<AMyGameState>(GetWorld()->GetGameState());
+}
+
 void AMyPlayerState::SetPlayerIndex(uint8 NewPlayerIndex) {
     PlayerIndex = NewPlayerIndex;
 }
@@ -40,11 +44,30 @@ void AMyPlayerState::MoveTrooper_Implementation(ATrooper *Trooper,
     }
 }
 
+// void AMyPlayerState::Attack_Implementation(ATrooper *Attacker,
+//                                            FVector Location,
+//                                            int ActionIndex) {
+//     if (Attacker->CheckAttackCorrectness(Location, ActionIndex)) {
+//         Attacker->Attack(ActionIndex);
+//     } else {
+//         GEngine->AddOnScreenDebugMessage(-1, 3.0f, FColor::Red,
+//                                          FString::Printf(
+//                                              TEXT(
+//                                                  "Out of radius or not enough Action Points!")));
+//     }
+// }
+
 void AMyPlayerState::Attack_Implementation(ATrooper *Attacker,
                                            FVector Location,
-                                           int ActionIndex) {
+                                           int ActionIndex,
+                                           const TArray<ATrooper *> &Troopers) {
     if (Attacker->CheckAttackCorrectness(Location, ActionIndex)) {
-        Attacker->Attack(ActionIndex);
+        Attacker->Attack(ActionIndex, Location);
+        // for (const auto Trooper : Troopers) {
+        //     if (Attacker->GetPlayerIndex() != Trooper->GetPlayerIndex()) {
+        //         Trooper->TakeDamage(Attacker->GetAbility(ActionIndex)->Damage);
+        //     }
+        // }
     } else {
         GEngine->AddOnScreenDebugMessage(-1, 3.0f, FColor::Red,
                                          FString::Printf(
@@ -55,7 +78,7 @@ void AMyPlayerState::Attack_Implementation(ATrooper *Attacker,
 
 void AMyPlayerState::CycleTurns() const {
     if (bIsMyTurn) {
-        Cast<AMyGameState>(GetWorld()->GetGameState())->CycleTurns();
+        GetMyGameState()->CycleTurns();
     }
 }
 
@@ -73,6 +96,7 @@ void AMyPlayerState::SetMyTurn(bool bMyTurn) {
     }
 }
 
+
 void AMyPlayerState::StartTurn_Implementation() {
     SetMyTurn(true);
     UE_LOG(LogTemp, Warning, TEXT("Your turn, %d"), PlayerIndex);
@@ -122,7 +146,7 @@ void AMyPlayerState::OnPlayerAction(const FHitResult &HitResult) {
                     // ATTACK! ATTACK!
                     UE_LOG(LogTemp, Warning, TEXT("Do attack"));
                     Attack(SelectedTrooper, NewlySelectedLocation,
-                           CurrentAction);
+                           CurrentAction, GetMyGameState()->GetTroopers());
                     SelectedTrooper->SetSelection(false, CurrentAction);
                     SelectedTrooper = nullptr;
                     break;

Source/TurnBasedTutorial/MyPlayerState.h

@@ -12,6 +12,7 @@
 UCLASS()
 class TURNBASEDTUTORIAL_API AMyPlayerState : public APlayerState {
     GENERATED_BODY()
+
 public:
     AMyPlayerState();
 
@@ -27,7 +28,10 @@ public:
     void MoveTrooper(ATrooper *Trooper, FVector Location);
 
     UFUNCTION(Server, Reliable)
-    void Attack(ATrooper *Attacker, FVector Location, int ActionIndex);
+    void Attack(ATrooper *Attacker,
+                FVector Location,
+                int ActionIndex,
+                const TArray<ATrooper *> &Troopers);
 
     UFUNCTION()
     void CycleTurns() const;
@@ -65,4 +69,6 @@ private:
 
     UPROPERTY(Replicated)
     ATrooper *SelectedTrooper;
+
+    auto GetMyGameState() const;
 };

Source/TurnBasedTutorial/MyProjectile.cpp

@@ -0,0 +1,64 @@
+// Fill out your copyright notice in the Description page of Project Settings.
+
+
+#include "MyProjectile.h"
+
+#include "Net/UnrealNetwork.h"
+#include "VisualLogger/VisualLoggerCustomVersion.h"
+
+AMyProjectile::AMyProjectile() {
+    // if (!CollisionComponent) {
+    //     CollisionComponent = CreateDefaultSubobject<USphereComponent>(
+    //         TEXT("SphereComponent"));
+    // }
+    // RootComponent = CollisionComponent;
+    if (!ProjectileMeshComponent) {
+        ProjectileMeshComponent = CreateDefaultSubobject<UStaticMeshComponent>(
+            TEXT("ProjectileMeshComponent"));
+        static ConstructorHelpers::FObjectFinder<UStaticMesh> Mesh(
+            TEXT(
+                "StaticMesh'/Game/StarterContent/Shapes/Shape_Sphere.Shape_Sphere'"));
+        if (Mesh.Succeeded()) {
+            ProjectileMeshComponent->SetStaticMesh(Mesh.Object);
+            RootComponent = ProjectileMeshComponent;
+        }
+    }
+    if (!ProjectileMovementComponent) {
+        ProjectileMovementComponent = CreateDefaultSubobject<
+            UProjectileMovementComponent>(TEXT("ProjectileMovementComponent"));
+        ProjectileMovementComponent->SetUpdatedComponent(
+            ProjectileMeshComponent);
+        ProjectileMovementComponent->InitialSpeed = 1000.0f;
+        ProjectileMovementComponent->MaxSpeed = 1000.0f;
+        ProjectileMovementComponent->ProjectileGravityScale = 0.0f;
+    }
+    InitialLifeSpan = 2.0f;
+}
+
+void AMyProjectile::Initialize(const UAbility *Ability,
+                               uint8 playerIndex,
+                               float PathLength) {
+    ProjectileMovementComponent->InitialSpeed =
+        ProjectileMovementComponent->MaxSpeed = Ability->Speed;
+    Damage = Ability->Damage;
+    float Scale = Ability->LinearWidth / 100;
+    ProjectileMeshComponent->SetWorldScale3D({Scale, Scale, Scale});
+    PlayerIndex = playerIndex;
+    SetLifeSpan(PathLength / Ability->Speed);
+}
+
+void AMyProjectile::Shoot(FVector From, FVector To) const {
+    ProjectileMovementComponent->Velocity =
+        (To - From).GetSafeNormal() * ProjectileMovementComponent->InitialSpeed;
+}
+
+
+void AMyProjectile::BeginPlay() {
+    Super::BeginPlay();
+}
+
+void AMyProjectile::GetLifetimeReplicatedProps(
+    TArray<FLifetimeProperty> &OutLifetimeProps) const {
+    Super::GetLifetimeReplicatedProps(OutLifetimeProps);
+    DOREPLIFETIME(AMyProjectile, Damage);
+}

Source/TurnBasedTutorial/MyProjectile.h

@@ -0,0 +1,40 @@
+// Fill out your copyright notice in the Description page of Project Settings.
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "Ability.h"
+#include "Components/SphereComponent.h"
+#include "GameFramework/Actor.h"
+#include "GameFramework/ProjectileMovementComponent.h"
+#include "MyProjectile.generated.h"
+
+UCLASS()
+class TURNBASEDTUTORIAL_API AMyProjectile : public AActor {
+    GENERATED_BODY()
+
+public:
+    AMyProjectile();
+
+    void Initialize(const UAbility *Ability, uint8 playerIndex, float PathLength);
+
+    void Shoot(FVector From, FVector To) const;
+
+protected:
+    UPROPERTY(Replicated)
+    float Damage;
+
+    UPROPERTY(Replicated)
+    uint8 PlayerIndex = -1;
+    
+    // UPROPERTY(EditAnywhere)
+    // USphereComponent *CollisionComponent;
+
+    UPROPERTY(EditAnywhere)
+    UStaticMeshComponent *ProjectileMeshComponent;
+
+    UPROPERTY(VisibleAnywhere)
+    UProjectileMovementComponent *ProjectileMovementComponent;
+    
+    virtual void BeginPlay() override;
+};

Source/TurnBasedTutorial/Trooper.cpp

@@ -2,7 +2,7 @@
 #include <Kismet/GameplayStatics.h>
 
 #include "HealthBar.h"
-#include "MyPlayerState.h"
+#include "MyProjectile.h"
 #include "Components/WidgetComponent.h"
 #include "Net/UnrealNetwork.h"
 
@@ -32,7 +32,6 @@ ATrooper::ATrooper()
 
     if (MeshToUse.Object) {
         SelectionStaticMesh->SetStaticMesh(MeshToUse.Object);
-        SelectionStaticMesh->SetStaticMesh(MeshToUse.Object);
     }
     // SelectionStaticMesh->SetRelativeTransform(FTransform({1000,1000,100}, {0, 0, 0}), false,
     // nullptr, ETeleportType::TeleportPhysics);
@@ -71,6 +70,7 @@ void ATrooper::Initialize(uint8 const NewPlayerIndex,
     PlayerIndex = NewPlayerIndex;
     bIsMoving = false;
     AttackPlayedTime = 0.0f;
+    TakingDamagePlayedTime = 0.0f;
     CurrentLocation = SpawnLocation;
     Id = NewId;
 }
@@ -78,11 +78,24 @@ void ATrooper::Initialize(uint8 const NewPlayerIndex,
 void ATrooper::Tick(float const DeltaTime) {
     if (bIsAttacking) {
         AttackPlayedTime += DeltaTime;
+        if (bIsWaitingForFire && AttackPlayedTime >= FireAfterTime) {
+            FireProjectile();
+            CurrentAbilityIndex = -1;
+            CurrentAbilityDestination = {};
+            bIsWaitingForFire = false;
+        }
         if (AttackPlayedTime >= AttackDuration) {
             AttackPlayedTime = 0.0f;
             bIsAttacking = false;
         }
     }
+    if (bIsTakingDamage) {
+        TakingDamagePlayedTime += DeltaTime;
+        if (TakingDamagePlayedTime >= TakingDamageDuration) {
+            TakingDamagePlayedTime = 0.0f;
+            bIsTakingDamage = false;
+        }
+    }
     if (bIsMoving) {
         FVector PositionVector = (TargetLocation - CurrentLocation);
         PositionVector.Normalize();
@@ -133,6 +146,11 @@ void ATrooper::GetLifetimeReplicatedProps(
     DOREPLIFETIME(ATrooper, ActionPoints);
     DOREPLIFETIME(ATrooper, HealthWidgetComponent);
     DOREPLIFETIME(ATrooper, AttackPlayedTime);
+    DOREPLIFETIME(ATrooper, TakingDamagePlayedTime);
+    DOREPLIFETIME(ATrooper, bIsTakingDamage);
+    DOREPLIFETIME(ATrooper, bIsDead);
+    DOREPLIFETIME(ATrooper, CurrentAbilityIndex);
+    DOREPLIFETIME(ATrooper, CurrentAbilityDestination);
 }
 
 uint8 ATrooper::GetPlayerIndex() const {
@@ -221,19 +239,89 @@ UAbility *ATrooper::GetAbility(int AbilityIndex) const {
     }
 }
 
-float ATrooper::GetAnimationValue() {
+bool ATrooper::TakeDamage(float Damage) {
+    HitPoints = FMath::Max<float>(0, HitPoints - Damage);
+    if (HitPoints == 0) {
+        bIsDead = true;
+        return true;
+    }
+    bIsTakingDamage = true;
+    return false;
+}
+
+TSubclassOf<AMyProjectile> ATrooper::GetProjectileClass(
+    uint8 AbilityIndex) const {
+    switch (AbilityIndex) {
+        case 1:
+            return AttackProjectileClass;
+        case 2:
+            return SpecialProjectileClass;
+        default:
+            return AMyProjectile::StaticClass();
+    }
+}
+
+void ATrooper::FireProjectile_Implementation() {
+    if (!this || !this->IsValidLowLevel())
+        return;
+    FTransform SpawnTransform(
+        (CurrentAbilityDestination - CurrentLocation).Rotation());
+    const FVector TransformedVector = SpawnTransform.TransformVector(
+        {GetAbility(CurrentAbilityIndex)->LinearWidth / 2 + 50.0f, 0.0f,
+         88.0f});
+    const FVector SpawnLocation = CurrentLocation + TransformedVector;
+    SpawnTransform.SetLocation(SpawnLocation);
+    FActorSpawnParameters SpawnParameters;
+    SpawnParameters.Owner = this;
+    SpawnParameters.Instigator = GetInstigator();
+    SpawnParameters.SpawnCollisionHandlingOverride =
+        ESpawnActorCollisionHandlingMethod::AlwaysSpawn;
+    AMyProjectile *Projectile = GetWorld()->SpawnActor<AMyProjectile>(
+        GetProjectileClass(CurrentAbilityIndex), SpawnTransform,
+        SpawnParameters);
+    Projectile->Initialize(GetAbility(CurrentAbilityIndex), CurrentAbilityIndex,
+                           (CurrentAbilityDestination - SpawnLocation).
+                           Size());
+    Projectile->Shoot(SpawnLocation, CurrentAbilityDestination);
+}
+
+int ATrooper::GetAnimationValue() {
+    if (bIsDead) {
+        return 4;
+    }
+    if (bIsTakingDamage) {
+        return 3;
+    }
     if (bIsAttacking) {
-        return -100.0f;
+        return 2;
     }
     if (bIsMoving) {
-        return 100.0f;
+        return 1;
     }
-    return 0.0f;
+    return 0;
 }
 
-void ATrooper::Attack(int abilityIndex) {
+void ATrooper::Attack(int AbilityIndex, FVector ToLocation) {
     bIsAttacking = true;
-    ActionPoints -= GetAbility(abilityIndex)->ActionCost;
+    bIsWaitingForFire = true;
+    ActionPoints -= GetAbility(AbilityIndex)->ActionCost;
+    CurrentAbilityIndex = AbilityIndex;
+    ToLocation.Z = 88.0f;
+    CurrentAbilityDestination = ToLocation;
+    // FTransform SpawnTransform((ToLocation - CurrentLocation).Rotation());
+    // SpawnTransform.SetLocation(
+    //     CurrentLocation + SpawnTransform.TransformVector(
+    //         {GetAbility(AbilityIndex)->LinearWidth/2 + 50.0f, 0.0f, 0.0f})
+    // );
+    // FActorSpawnParameters SpawnParameters;
+    // SpawnParameters.Owner = this;
+    // SpawnParameters.Instigator = GetInstigator();
+    // SpawnParameters.SpawnCollisionHandlingOverride =
+    //     ESpawnActorCollisionHandlingMethod::AlwaysSpawn;
+    // AMyProjectile *Projectile = GetWorld()->SpawnActor<AMyProjectile>(
+    //     GetProjectileClass(AbilityIndex), SpawnTransform, SpawnParameters);
+    // Projectile->Initialize(GetAbility(AbilityIndex));
+    // Projectile->Shoot(CurrentLocation, ToLocation);
 }
 
 bool ATrooper::CheckMoveCorrectness(const FVector newPos) const {

Source/TurnBasedTutorial/Trooper.h

@@ -36,10 +36,10 @@ public:
     FVector GetLocation() const;
 
     UFUNCTION(BlueprintCallable)
-    float GetAnimationValue();
+    int GetAnimationValue();
     
     UFUNCTION()
-    void Attack(int abilityIndex);
+    void Attack(int AbilityIndex, FVector ToLocation);
     
     UFUNCTION()
     float GetActionRadius(int action) const;
@@ -65,6 +65,9 @@ public:
     UFUNCTION()
     UAbility *GetAbility(int AbilityIndex) const;
 
+    UFUNCTION()
+    bool TakeDamage(float Damage);
+
 protected:
     constexpr static float PIXELS_IN_RADIUS = 50;
     
@@ -80,6 +83,24 @@ protected:
     UPROPERTY(EditAnywhere)
     UAbility *SpecialAbility;
 
+    UPROPERTY(EditAnywhere, BlueprintReadWrite)
+    TSubclassOf<AMyProjectile> AttackProjectileClass;
+
+    UPROPERTY(EditAnywhere, BlueprintReadWrite)
+    TSubclassOf<AMyProjectile> SpecialProjectileClass;
+
+    UFUNCTION()
+    TSubclassOf<AMyProjectile> GetProjectileClass(uint8 AbilityIndex) const;
+
+    UFUNCTION(Server, Reliable)
+    void FireProjectile();
+
+    UPROPERTY(Replicated)
+    uint8 CurrentAbilityIndex = -1;
+
+    UPROPERTY(Replicated)
+    FVector CurrentAbilityDestination = {};
+    
     UPROPERTY(EditAnywhere)
     float Speed = 300.0f;
 
@@ -106,6 +127,22 @@ protected:
 
     const float AttackDuration = 1.16667f;
 
+    const float FireAfterTime = 0.6f;
+
+    UPROPERTY(Replicated)
+    bool bIsWaitingForFire = false;
+
+    UPROPERTY(Replicated)
+    bool bIsTakingDamage = false;
+    
+    UPROPERTY(Replicated)
+    float TakingDamagePlayedTime;
+
+    const float TakingDamageDuration = 1.46667f;
+    
+    UPROPERTY(Replicated)
+    bool bIsDead = false;
+    
     virtual void BeginPlay() override;
 
     virtual void Tick(float const DeltaTime) override;