basic touch system impl

samples/bin/library/scripts/sample_08/ship.lua

@@ -24,4 +24,18 @@ end
 function M.on_update(meta, go)
 end
 
+---@param go gobject
+---@param type string
+---@param event touchable_mouse_evt
+function M:on_event(go, type, event)
+    if type == "touchable.mouse_evt" then
+        the_debug:trace(string.format(
+            "ship %q touched(%s %s) - %s",
+            go.named and go.named.name or "---",
+            event.type,
+            event.button,
+            go == event.target and "self" or "other"))
+    end
+end
+
 return M