up3

server/block/model/fence_gate.go

@@ -0,0 +1,28 @@
+package model
+
+import (
+	"github.com/df-mc/dragonfly/server/block/cube"
+	"github.com/df-mc/dragonfly/server/world"
+)
+
+// FenceGate is a model used by fence gates. The model is completely zero-ed when the FenceGate is opened.
+type FenceGate struct {
+	// Facing is the facing direction of the FenceGate. A fence gate can only be opened in this direction or the
+	// direction opposite to it.
+	Facing cube.Direction
+	// Open specifies if the FenceGate is open. In this case, BBox returns an empty slice.
+	Open bool
+}
+
+// BBox returns up to one physics.BBox depending on the facing direction of the FenceGate and whether it is open.
+func (f FenceGate) BBox(cube.Pos, world.BlockSource) []cube.BBox {
+	if f.Open {
+		return nil
+	}
+	return []cube.BBox{cube.Box(0, 0, 0, 1, 1.5, 1).Stretch(f.Facing.Face().Axis(), -0.375)}
+}
+
+// FaceSolid always returns false.
+func (f FenceGate) FaceSolid(cube.Pos, cube.Face, world.BlockSource) bool {
+	return false
+}