// Returns true if the weapon hold by the character should be reloaded, false otherwise
bool AMurphysLawCharacter::ShouldReload() const
{
return HasWeaponEquipped()
&& !GetEquippedWeapon()->IsReloading
&& GetEquippedWeapon()->GetNumberOfAmmoLeftInMagazine() <= 0
&& GetEquippedWeapon()->GetNumberOfAmmoLeftInInventory() > 0;
}
void cMonster::AddRandomWeaponDropItem(cItems & a_Drops, short a_LootingLevel)
{
MTRand r1;
if (r1.randInt() % 200 < ((m_DropChanceWeapon * 200) + (a_LootingLevel * 2)))
{
if (!GetEquippedWeapon().IsEmpty()) a_Drops.push_back(GetEquippedWeapon());
}
}
// Called when the player press a key to change his character's weapon
void AMurphysLawCharacter::EquipWeapon(int32 Index)
{
// Checks if the index passed in parameter is within the boundaries of our Inventory
if (Index >= Inventory->NumberOfWeaponInInventory) return;
// Don't try to re-equip the weapon we already have in hand
if (Index == CurrentWeaponIndex) return;
// Allows the character to change weapon even if the current weapon is reloading
GetEquippedWeapon()->IsReloading = false;
// Plays a sound when switching weapon if available
if (SwitchingWeaponSound != nullptr)
{
UGameplayStatics::PlaySoundAtLocation(this, SwitchingWeaponSound, GetActorLocation());
}
// If the server modifies the value of the property, it is sent to the clients automatically
if (Role == ROLE_Authority)
{
Server_ChangeCurrentWeapon_Implementation(Index);
}
else
{
// If a client wants to modify the value, it has to send a request to the server
Server_ChangeCurrentWeapon(Index);
}
}
void AMurphysLawCharacter::Fire()
{
// check if we have a weapon equipped
if (HasWeaponEquipped())
{
// if the weapon has been able to fire
if (GetEquippedWeapon()->Fire(this))
{
// Stop the character from running
SetIsRunning(false);
// try and play a firing animation if specified
if (FireAnimation != nullptr)
{
// Get the animation object for the arms mesh
UAnimInstance* AnimInstance = Mesh1P->GetAnimInstance();
if (AnimInstance != nullptr)
{
AnimInstance->Montage_Play(FireAnimation, 1.f);
}
}
// check for bullet collisions
ComputeBulletCollisions();
}
// We reload the weapon if it is empty and we have bullets left in our inventory
if (ShouldReload())
{
Reload();
}
}
}
void AMurphysLawCharacter::Aim()
{
if (HasWeaponEquipped())
{
FirstPersonCameraComponent->FieldOfView = GetEquippedWeapon()->AimFactor;
IsCharacterAiming = true;
}
}
bool AMurphysLawCharacter::CanPlayerMove()
{
bool CanMove = true;
AMurphysLawBaseWeapon* CurrentWeapon = GetEquippedWeapon();
if (CurrentWeapon)
CanMove = !(IsCrouched && CurrentWeapon->IsReloading);
return CanMove;
}
// Refills ammos for the current equipped weapon
void AMurphysLawCharacter::ReceiveAmmo(const int32 NumberOfAmmo)
{
GetEquippedWeapon()->AddAmmoInInventory(NumberOfAmmo);
// If the equipped weapon is empty when picking up ammos, it auto-reloads
if (ShouldReload())
{
Reload();
}
}
// Called when the player press the Reload key
void AMurphysLawCharacter::Reload()
{
// Checks if we have a weapon equipped
if (HasWeaponEquipped())
{
// If the weapon has been able to reload
if (GetEquippedWeapon()->Reload())
{
SetIsRunning(false);
}
}
}
float AMurphysLawCharacter::GetDeliveredDamage(const FHitResult& CollisionResult) const
{
float DeliveredDamage = GetEquippedWeapon()->ComputeCollisionDamage(CollisionResult.Distance);
FString BoneName = CollisionResult.BoneName.ToString();
if (BoneName == SOCKET_HEAD)
DeliveredDamage *= FACTOR_HEADSHOT;
else if (BoneName == SOCKET_SPINE)
DeliveredDamage *= FACTOR_CHESTSHOT;
return DeliveredDamage;
}
// Refills ammos for the collected weapon or collects it if character didn't have it yet
void AMurphysLawCharacter::CollectWeapon(class AMurphysLawBaseWeapon* Weapon)
{
Inventory->CollectWeapon(Weapon);
// If the equipped weapon is empty when picking up the weapon and it's the same, it auto-reloads
if (HasWeaponEquipped()
&& GetEquippedWeapon()->IsOfSameType(Weapon)
&& ShouldReload())
{
Reload();
}
}
void RPG_InventoryHandler::DebugDisplayInventory()
{
const float verticalOffset = 350.f; //@todo: Get the character's height here & replace offset magic number
VString msg, tempLine; //@todo: Is there a less crufty way to build these strings?
// add inventory list
for (int i = 0; i < m_inventoryCollection.Count (); ++i)
{
tempLine.Format("Item #%i - %s\n", i, m_inventoryCollection.GetAt(i)->GetName().AsChar());
msg += tempLine;
}
tempLine.Format("Equipped:\n");
msg += tempLine;
// add equipped weapon info
if (GetEquippedWeapon())
{
tempLine.Format("Equipped weapon: %s (Dmg: %.1f%%%% - %.1f%%%%, Spd: %.1f%%%%, Rng: %.1f)\n",
GetEquippedWeapon()->GetName().AsChar(),
GetEquippedWeapon()->GetMinDamage(),
GetEquippedWeapon()->GetMaxDamage(),
GetEquippedWeapon()->GetSpeed(),
GetEquippedWeapon()->GetRange()
);
}
else
{
tempLine.Format("Equipped weapon: None\n");
}
msg += tempLine;
// add equipped armor info
tempLine.Format("Equipped armor: %s (%i), %s (%i), %s (%i),\n %s (%i), %s (%i), %s (%i)\n",
GetEquippedArmor(ES_Helmet) ? GetEquippedArmor(ES_Helmet)->GetName().AsChar() : "<None>",
GetEquippedArmor(ES_Helmet) ? GetEquippedArmor(ES_Helmet)->GetArmorValue() : 0,
GetEquippedArmor(ES_Chest) ? GetEquippedArmor(ES_Chest)->GetName().AsChar() : "<None>",
GetEquippedArmor(ES_Chest) ? GetEquippedArmor(ES_Chest)->GetArmorValue() : 0,
GetEquippedArmor(ES_Gloves) ? GetEquippedArmor(ES_Gloves)->GetName().AsChar() : "<None>",
GetEquippedArmor(ES_Gloves) ? GetEquippedArmor(ES_Gloves)->GetArmorValue() : 0,
GetEquippedArmor(ES_Shoulder) ? GetEquippedArmor(ES_Shoulder)->GetName().AsChar() : "<None>",
GetEquippedArmor(ES_Shoulder) ? GetEquippedArmor(ES_Shoulder)->GetArmorValue() : 0,
GetEquippedArmor(ES_Belt) ? GetEquippedArmor(ES_Belt)->GetName().AsChar() : "<None>",
GetEquippedArmor(ES_Belt) ? GetEquippedArmor(ES_Belt)->GetArmorValue() : 0,
GetEquippedArmor(ES_Boots) ? GetEquippedArmor(ES_Boots)->GetName().AsChar() : "<None>",
GetEquippedArmor(ES_Boots) ? GetEquippedArmor(ES_Boots)->GetArmorValue() : 0
);
msg += tempLine;
// display the message
const hkvVec3 vPos = m_characterOwner->GetPosition() + hkvVec3(0.0f, 0.0f, verticalOffset);
Vision::Message.DrawMessage3D(msg, vPos);
}
// Executed when CurrentWeaponIndex is replicated
void AMurphysLawCharacter::OnRep_CurrentWeaponIndex(int32 OldIndex)
{
auto OldWeapon = Inventory->GetWeapon(OldIndex);
auto OldFullMeshWeapon = Inventory->GetFullMeshWeapon(OldIndex);
auto NewFullMeshWeapon = Inventory->GetFullMeshWeapon(CurrentWeaponIndex);
// Hide the old weapons
if (OldWeapon != nullptr) OldWeapon->SetActorHiddenInGame(true);
if (OldFullMeshWeapon != nullptr) OldFullMeshWeapon->SetActorHiddenInGame(true);
// And show the new ones
if (HasWeaponEquipped()) GetEquippedWeapon()->SetActorHiddenInGame(false);
if (NewFullMeshWeapon != nullptr) NewFullMeshWeapon->SetActorHiddenInGame(false);
}
// Makes the character die
void AMurphysLawCharacter::Die()
{
Dead = true;
IMurphysLawIController* PlayerController = Cast<IMurphysLawIController>(Controller);
if (PlayerController)
{
PlayerController->OnKilled(TimeToRespawn);
}
// Disable collisions for the actor as he's dead
SetActorEnableCollision(false);
// Hide the current weapon of the player before destroying it
if (HasWeaponEquipped())
{
GetEquippedWeapon()->SetActorHiddenInGame(true);
Inventory->GetFullMeshWeapon(CurrentWeaponIndex)->SetActorHiddenInGame(true);
}
}
// Reports if the character has a weapon equipped
bool AMurphysLawCharacter::HasWeaponEquipped() const
{
return CurrentWeaponIndex != NO_WEAPON_VALUE && GetEquippedWeapon() != nullptr;
}
// Check for bullet collisions
void AMurphysLawCharacter::ComputeBulletCollisions()
{
// Only look for pawns
FCollisionObjectQueryParams CollisionObjectQueryParams;
CollisionObjectQueryParams.AddObjectTypesToQuery(ECollisionChannel::ECC_PhysicsBody);
CollisionObjectQueryParams.AddObjectTypesToQuery(ECollisionChannel::ECC_Destructible);
CollisionObjectQueryParams.AddObjectTypesToQuery(ECollisionChannel::ECC_WorldStatic);
// Remove self from query potential results since we are the first to collide with the ray
FCollisionQueryParams RayQueryParams;
RayQueryParams.AddIgnoredActor(this);
// Ray starting coordinates
const FVector CollisionRayStart = GetFirstPersonCameraComponent()->GetComponentLocation();
const FVector CollisionRayInitialDirection = GetFirstPersonCameraComponent()->GetComponentTransform().GetRotation().GetAxisX();
// Group damage of touched objects together
const float MaxFragmentDeviationRadian = FMath::DegreesToRadians(GetEquippedWeapon()->GetMaxFragmentDeviationAngle(IsCharacterAiming));
bool AtLeastOneHit = false;
// Trace lines to detect pawn
for (int32 i = 0; i < GetEquippedWeapon()->GetNumberOfEmittedFragments(); ++i)
{
// Ray ending coordinates
const FVector CollisionRayAngledDirection = FMath::VRandCone(CollisionRayInitialDirection, MaxFragmentDeviationRadian);
const FVector CollisionRayEnd = CollisionRayStart + (CollisionRayAngledDirection * GetEquippedWeapon()->GetMaxTravelDistanceOfBullet());
FHitResult CollisionResult;
bool HasHit = GetWorld()->LineTraceSingleByObjectType(CollisionResult, CollisionRayStart, CollisionRayEnd, CollisionObjectQueryParams, RayQueryParams);
if (HasHit)
{
// Simple damage amount considering the distance to the target depending on the bone hit
float DeliveredDamage = GetDeliveredDamage(CollisionResult);
FPointDamageEvent CollisionDamageEvent(DeliveredDamage, CollisionResult, CollisionRayAngledDirection, UDamageType::StaticClass());
// If the actor we hit is a hittable actor and an enemy, we have at least one hit so we'll show the Hit Marker
if (IsHittableActor(CollisionResult.GetActor()) && !MurphysLawUtils::IsInSameTeam(CollisionResult.GetActor(), this))
{
AtLeastOneHit = true;
}
if (Role == ROLE_Authority)
{
CollisionResult.GetActor()->TakeDamage(DeliveredDamage, CollisionDamageEvent, GetController(), this);
}
else
{
Server_TransferDamage(CollisionResult.GetActor(), DeliveredDamage, CollisionDamageEvent, GetController(), this);
}
}
}
// If there was at least one hit, we show the HitMarker
if (AtLeastOneHit)
{
auto MyController = Cast<AMurphysLawPlayerController>(GetController());
if (MyController != nullptr && MyController->GetHUDInstance() != nullptr)
{
MyController->GetHUDInstance()->ShowHitMarker();
}
}
}
/** Defines a world-space point where an ai should look
Since the gun is located in the center of the body, it is a good focal point */
AActor* AMurphysLawCharacter::GetFocalPoint() const { return GetEquippedWeapon(); }
