Starting entities, components, and levels

entity/entity.go

@@ -0,0 +1,43 @@
+package entity
+
+type Entity struct {
+
+	// Byte 1: Generation; Byte 2: Flags; Bytes 3-8: Index
+	ID    uint64
+	Comps []Comp
+}
+
+type Comp interface {
+	Name() string
+}
+
+func AddComp(e *Entity, c Comp) {
+	e.Comps = append(e.Comps, c)
+}
+
+func GetComp[T Comp](e *Entity) (out T) {
+
+	for i := 0; i < len(e.Comps); i++ {
+
+		comp, ok := e.Comps[i].(T)
+		if ok {
+			return comp
+		}
+	}
+
+	return out
+}
+
+func GetAllCompOfType[T Comp](e *Entity) (out []T) {
+
+	out = []T{}
+	for i := 0; i < len(e.Comps); i++ {
+
+		comp, ok := e.Comps[i].(T)
+		if ok {
+			out = append(out, comp)
+		}
+	}
+
+	return out
+}