Initial commit

node/camera2d.go

@@ -0,0 +1,48 @@
+package node
+
+import (
+	"errors"
+
+	"github.com/manleydev/golang-game-framework/rendering"
+)
+
+type Camera2D struct {
+	Node2D
+	Zoom     float64
+	camera   *rendering.Camera2D
+	renderer *rendering.Renderer2D
+}
+
+func (camera *Camera2D) Update() error {
+	if err := camera.Node2D.Update(); err != nil {
+		return err
+	}
+
+	camRef := *(camera.camera)
+	camRef.SetOffset(camera.GetGlobalPosition())
+	camRef.SetZoom(camera.Zoom)
+
+	return nil
+}
+
+func (camera *Camera2D) Enable() error {
+	if camera.camera == nil {
+		return errors.New("camera is nil")
+	}
+	return (*camera.renderer).SetCamera(camera.camera)
+}
+
+func (node *Camera2D) AddChild(child INode) {
+	node.internalAddChild(node, child)
+}
+
+func NewCamera2D(renderer *rendering.Renderer2D, cam *rendering.Camera2D) *Camera2D {
+	camera := Camera2D{
+		Node2D:   NewNode2D(),
+		camera:   cam,
+		renderer: renderer,
+		Zoom:     1.0,
+	}
+
+	return &camera
+}