Initial Agrarian Unreal project

Source/AgrarianGame/AgrarianCraftingComponent.cpp

@@ -0,0 +1,134 @@
+// Copyright Pacificao. All Rights Reserved.
+
+#include "AgrarianCraftingComponent.h"
+#include "AgrarianInventoryComponent.h"
+
+UAgrarianCraftingComponent::UAgrarianCraftingComponent()
+{
+	PrimaryComponentTick.bCanEverTick = false;
+	SetIsReplicatedByDefault(true);
+}
+
+bool UAgrarianCraftingComponent::CanCraft(FName RecipeId, FText& FailureReason) const
+{
+	FAgrarianRecipe Recipe;
+	if (!FindRecipe(RecipeId, Recipe))
+	{
+		FailureReason = FText::FromString(TEXT("Recipe is not known."));
+		return false;
+	}
+
+	const UAgrarianInventoryComponent* Inventory = GetInventory();
+	if (!Inventory)
+	{
+		FailureReason = FText::FromString(TEXT("No inventory is available."));
+		return false;
+	}
+
+	for (const FAgrarianItemStack& Ingredient : Recipe.Ingredients)
+	{
+		if (!Inventory->HasItem(Ingredient.ItemId, Ingredient.Quantity))
+		{
+			FailureReason = FText::Format(
+				FText::FromString(TEXT("Missing ingredient: {0}")),
+				Ingredient.DisplayName.IsEmpty() ? FText::FromName(Ingredient.ItemId) : Ingredient.DisplayName);
+			return false;
+		}
+	}
+
+	return true;
+}
+
+bool UAgrarianCraftingComponent::Craft(FName RecipeId)
+{
+	if (!GetOwner())
+	{
+		return false;
+	}
+
+	if (!GetOwner()->HasAuthority())
+	{
+		ServerCraft(RecipeId);
+		return true;
+	}
+
+	FText FailureReason;
+	if (!CanCraft(RecipeId, FailureReason))
+	{
+		FailCraft(RecipeId, FailureReason);
+		return false;
+	}
+
+	FAgrarianRecipe Recipe;
+	FindRecipe(RecipeId, Recipe);
+
+	UAgrarianInventoryComponent* Inventory = GetInventory();
+	if (!Inventory)
+	{
+		FailCraft(RecipeId, FText::FromString(TEXT("No inventory is available.")));
+		return false;
+	}
+
+	for (const FAgrarianItemStack& Ingredient : Recipe.Ingredients)
+	{
+		Inventory->RemoveItem(Ingredient.ItemId, Ingredient.Quantity);
+	}
+
+	if (!Inventory->AddItem(Recipe.Result))
+	{
+		FailCraft(RecipeId, FText::FromString(TEXT("Inventory is full.")));
+		return false;
+	}
+
+	OnCraftCompleted.Broadcast(Recipe.RecipeId, Recipe.Result);
+	return true;
+}
+
+void UAgrarianCraftingComponent::ServerCraft_Implementation(FName RecipeId)
+{
+	Craft(RecipeId);
+}
+
+bool UAgrarianCraftingComponent::AddKnownRecipe(const FAgrarianRecipe& Recipe)
+{
+	if (Recipe.RecipeId == NAME_None || !Recipe.Result.IsValidStack())
+	{
+		return false;
+	}
+
+	for (FAgrarianRecipe& Existing : KnownRecipes)
+	{
+		if (Existing.RecipeId == Recipe.RecipeId)
+		{
+			Existing = Recipe;
+			return true;
+		}
+	}
+
+	KnownRecipes.Add(Recipe);
+	return true;
+}
+
+bool UAgrarianCraftingComponent::FindRecipe(FName RecipeId, FAgrarianRecipe& OutRecipe) const
+{
+	for (const FAgrarianRecipe& Recipe : KnownRecipes)
+	{
+		if (Recipe.RecipeId == RecipeId)
+		{
+			OutRecipe = Recipe;
+			return true;
+		}
+	}
+
+	return false;
+}
+
+UAgrarianInventoryComponent* UAgrarianCraftingComponent::GetInventory() const
+{
+	return GetOwner() ? GetOwner()->FindComponentByClass<UAgrarianInventoryComponent>() : nullptr;
+}
+
+void UAgrarianCraftingComponent::FailCraft(FName RecipeId, const FText& Reason) const
+{
+	OnCraftFailed.Broadcast(RecipeId, Reason);
+}