✨ Object-based land engine

pkg/internal/land/object.go

@@ -0,0 +1,29 @@
+package land
+
+import "github.com/veandco/go-sdl2/sdl"
+
+type Object interface {
+	Create()
+	Update()
+}
+
+type DrawableObject interface {
+	Draw(*sdl.Renderer)
+}
+
+type BaseObject struct {
+	Children []Object
+}
+
+func (p *BaseObject) Create() {}
+
+func (p *BaseObject) Update() {
+	// Update each child
+	for _, child := range p.Children {
+		child.Update()
+	}
+}
+
+func (p *BaseObject) AddChild(child Object) {
+	p.Children = append(p.Children, child)
+}

pkg/internal/land/root.go

@@ -0,0 +1,17 @@
+package land
+
+import (
+	"github.com/veandco/go-sdl2/sdl"
+)
+
+type RootObject struct {
+	BaseObject
+}
+
+func (p *RootObject) Draw(pen *sdl.Renderer) {
+	for _, child := range p.Children {
+		if drawableChild, ok := child.(DrawableObject); ok {
+			drawableChild.Draw(pen)
+		}
+	}
+}

pkg/internal/land/vector2d.go

@@ -0,0 +1,5 @@
+package land
+
+type Vector2D struct {
+	X, Y float64
+}