2 files changed, 56 insertions, 0 deletions
diff --git a/render/init.go b/render/init.go
new file mode 100644
index 0000000..9858cd4
--- /dev/null
+++ b/render/init.go
@@ -0,0 +1,32 @@
+package render
+
+import (
+	"context"
+	"github.com/Zyko0/go-sdl3/sdl"
+	"github.com/spf13/pflag"
+)
+
+var (
+	vsync = pflag.Int("vsync", 0, "vsync value (0 disabled, 1 every, 2 double, -1 adaptive)")
+)
+
+func Init() (*sdl.Window, *sdl.Renderer, context.CancelFunc, error) {
+	if err := sdl.Init(sdl.INIT_VIDEO); err != nil {
+		return nil, nil, nil, err
+	}
+
+	window, renderer, err := sdl.CreateWindowAndRenderer("ponger", 500, 500, 0)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+	err = window.SetRelativeMouseMode(true)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+	renderer.SetVSync(int32(*vsync))
+
+	return window, renderer, func() {
+		window.Destroy()
+		renderer.Destroy()
+	}, nil
+}
diff --git a/render/render.go b/render/render.go
new file mode 100644
index 0000000..83fc2d0
--- /dev/null
+++ b/render/render.go
@@ -0,0 +1,24 @@
+package render
+
+import (
+	"github.com/Zyko0/go-sdl3/sdl"
+	"ponger/ecs"
+)
+
+type Renders interface {
+	Render(renderer *sdl.Renderer)
+}
+
+func Render(root any, renderer *sdl.Renderer) {
+	if r, ok := root.(Renders); ok {
+		r.Render(renderer)
+	}
+	if g, ok := root.(*ecs.GameObject); ok {
+		for _, c := range g.Children {
+			if c == nil {
+				continue
+			}
+			Render(c, renderer)
+		}
+	}
+}