switch to single render loop

1 files changed, 43 insertions, 0 deletions

diff --git a/tree/tree.go b/tree/tree.go
new file mode 100644
index 0000000..a48dbc0
--- /dev/null
+++ b/tree/tree.go
@@ -0,0 +1,43 @@
+package tree
+
+import (
+	"github.com/Zyko0/go-sdl3/sdl"
+	"ponger/ecs"
+	"ponger/events"
+	"ponger/input"
+	"ponger/render"
+)
+
+func Process(root ecs.IsGameObject, delta uint64, renderer *sdl.Renderer) error {
+	evs, err := events.Poll(delta)
+	if err != nil {
+		return err
+	}
+	ParseRecursive(root, delta, renderer, evs...)
+	return nil
+}
+
+func ParseRecursive(current ecs.IsGameObject, delta uint64, renderer *sdl.Renderer, evs ...any) {
+	ParseSingle(current, delta, renderer, evs...)
+	for _, c := range current.GO().Children {
+		if c == nil {
+			continue
+		}
+		ParseSingle(c, delta, renderer, evs...)
+	}
+}
+
+func ParseSingle(obj ecs.IsGameObject, delta uint64, renderer *sdl.Renderer, evs ...any) {
+	switch impl := obj.(type) {
+	case input.MouseMotionHandler:
+		for _, e := range events.OfType[events.MouseMotion](evs...) {
+			impl.ProcessMouseMotion(e)
+		}
+	case input.MousePressHandler:
+		for _, e := range events.OfType[events.MousePress](evs...) {
+			impl.ProcessMousePress(e)
+		}
+	case render.Renders:
+		impl.Render(renderer)
+	}
+}