add stuff

2 files changed, 64 insertions, 0 deletions

diff --git a/input/input.go b/input/input.go
new file mode 100644
index 0000000..94f4e56
--- /dev/null
+++ b/input/input.go
@@ -0,0 +1,30 @@
+package input
+
+import "ponger/ecs"
+
+type DeviceID int
+
+type Event struct {
+	ecs.Event
+	Which                                DeviceID
+	Dx, Dy                               float32
+	JustPressed, JustReleased, IsPressed bool
+}
+
+type Handler interface {
+	Process(ev Event)
+}
+
+func ProcessTree(root any, ev Event) {
+	if inp, ok := root.(Handler); ok {
+		inp.Process(ev)
+	}
+	if g, ok := root.(*ecs.GameObject); ok {
+		for _, c := range g.Children {
+			if c == nil {
+				continue
+			}
+			ProcessTree(c, ev)
+		}
+	}
+}
diff --git a/input/sdl.go b/input/sdl.go
new file mode 100644
index 0000000..6b88f35
--- /dev/null
+++ b/input/sdl.go
@@ -0,0 +1,34 @@
+package input
+
+import (
+	"github.com/Zyko0/go-sdl3/sdl"
+	"ponger/ecs"
+)
+
+func Poll(root ecs.IsGameObject, delta uint64) error {
+	e := Event{
+		Event: ecs.Event{
+			Delta: delta,
+		},
+	}
+	var event sdl.Event
+	for sdl.PollEvent(&event) {
+		switch event.Type {
+		case sdl.EVENT_QUIT:
+			return sdl.EndLoop
+		case sdl.EVENT_MOUSE_MOTION:
+			ev := event.MouseMotionEvent()
+			e.Which = DeviceID(ev.Which)
+			e.Dx = ev.Xrel
+			e.Dy = ev.Yrel
+		case sdl.EVENT_MOUSE_BUTTON_DOWN, sdl.EVENT_MOUSE_BUTTON_UP:
+			ev := event.MouseButtonEvent()
+			e.Which = DeviceID(ev.Which)
+			e.JustPressed = ev.Down
+			e.JustReleased = !ev.Down
+			e.IsPressed = ev.Down
+		}
+	}
+	ProcessTree(root, e)
+	return nil
+}