holy crap click handling works too

common/elements/v1/buttons/options.go

@@ -0,0 +1,32 @@
+package buttons
+
+import (
+	"git.vezzani.net/ben/games/common/elements/v1/blocks"
+	"git.vezzani.net/ben/games/common/elements/v1/mouse"
+)
+
+type Option func(button *Button)
+
+func OnClick(f func(ms mouse.State)) Option {
+	return func(button *Button) {
+		button.onClick = f
+	}
+}
+
+func OnMouseDown(f func(ms mouse.State)) Option {
+	return func(button *Button) {
+		button.onMouseDown = f
+	}
+}
+
+func OnMouseUp(f func(ms mouse.State)) Option {
+	return func(button *Button) {
+		button.onMouseUp = f
+	}
+}
+
+func BlockOpt(o blocks.Option) Option {
+	return func(s *Button) {
+		o(&s.Block)
+	}
+}