up3

server/cmd/target.go

@@ -0,0 +1,29 @@
+package cmd
+
+import (
+	"github.com/df-mc/dragonfly/server/internal/sliceutil"
+	"github.com/df-mc/dragonfly/server/world"
+	"github.com/go-gl/mathgl/mgl64"
+	"slices"
+)
+
+// Target represents the target of a command. A []Target may be used as command parameter
+// types to allow passing targets to the command.
+type Target interface {
+	// Position returns the position of the Target as an mgl64.Vec3.
+	Position() mgl64.Vec3
+}
+
+// NamedTarget is a Target that has a name.
+type NamedTarget interface {
+	Target
+	// Name returns a name of the Target. Note that this name needs not to be and is not unique for a Target.
+	Name() string
+}
+
+// targets returns all Targets selectable by the Source passed.
+func targets(tx *world.Tx) (entities []Target, players []NamedTarget) {
+	ent := sliceutil.Convert[Target](slices.Collect(tx.Entities()))
+	pl := sliceutil.Convert[NamedTarget](slices.Collect(tx.Players()))
+	return ent, pl
+}