up3

server/session/handler_stonecutter.go

@@ -0,0 +1,49 @@
+package session
+
+import (
+	"fmt"
+	"github.com/df-mc/dragonfly/server/item/recipe"
+	"github.com/df-mc/dragonfly/server/world"
+	"github.com/sandertv/gophertunnel/minecraft/protocol"
+)
+
+// stonecutterInputSlot is the slot index of the input item in the stonecutter.
+const stonecutterInputSlot = 0x03
+
+// handleStonecutting handles a CraftRecipe stack request action made using a stonecutter.
+func (h *ItemStackRequestHandler) handleStonecutting(a *protocol.CraftRecipeStackRequestAction, s *Session, tx *world.Tx) error {
+	craft, ok := s.recipes[a.RecipeNetworkID]
+	if !ok {
+		return fmt.Errorf("recipe with network id %v does not exist", a.RecipeNetworkID)
+	}
+	if _, shapeless := craft.(recipe.Shapeless); !shapeless {
+		return fmt.Errorf("recipe with network id %v is not a shapeless recipe", a.RecipeNetworkID)
+	}
+	if craft.Block() != "stonecutter" {
+		return fmt.Errorf("recipe with network id %v is not a stonecutter recipe", a.RecipeNetworkID)
+	}
+
+	timesCrafted := int(a.NumberOfCrafts)
+	if timesCrafted < 1 {
+		return fmt.Errorf("times crafted must be at least 1")
+	}
+
+	expectedInputs := craft.Input()
+	input, _ := h.itemInSlot(protocol.StackRequestSlotInfo{
+		Container: protocol.FullContainerName{ContainerID: protocol.ContainerStonecutterInput},
+		Slot:      stonecutterInputSlot,
+	}, s, tx)
+	if input.Count() < timesCrafted {
+		return fmt.Errorf("input item count is less than number of crafts")
+	}
+	if !matchingStacks(input, expectedInputs[0]) {
+		return fmt.Errorf("input item is not the same as expected input")
+	}
+
+	output := craft.Output()
+	h.setItemInSlot(protocol.StackRequestSlotInfo{
+		Container: protocol.FullContainerName{ContainerID: protocol.ContainerStonecutterInput},
+		Slot:      stonecutterInputSlot,
+	}, input.Grow(-timesCrafted), s, tx)
+	return h.createResults(s, tx, repeatStacks(output, timesCrafted)...)
+}