Added node scaling, and a few utility functions

assets/airport-demo/init.toy

@@ -0,0 +1,42 @@
+//A quirk of the setup is that anything defined in the root of `init.toy` becomes a global object
+//To resolve that, the configuration is inside a block scope
+{
+	import engine;
+	import input;
+
+
+	//input settings, mapping SDL2's virtual keys to event names
+	mapInputEventToKeyDown("character_up",    "w"); //event, keysym
+	mapInputEventToKeyDown("character_left",  "a"); //event, keysym
+	mapInputEventToKeyDown("character_down",  "s"); //event, keysym
+	mapInputEventToKeyDown("character_right", "d"); //event, keysym
+
+	mapInputEventToKeyUp("character_up",    "w"); //event, keysym
+	mapInputEventToKeyUp("character_left",  "a"); //event, keysym
+	mapInputEventToKeyUp("character_down",  "s"); //event, keysym
+	mapInputEventToKeyUp("character_right", "d"); //event, keysym
+
+	mapInputEventToKeyDown("character_up",    "up"); //event, keysym
+	mapInputEventToKeyDown("character_left",  "left"); //event, keysym
+	mapInputEventToKeyDown("character_down",  "down"); //event, keysym
+	mapInputEventToKeyDown("character_right", "right"); //event, keysym
+
+	mapInputEventToKeyUp("character_up",    "up"); //event, keysym
+	mapInputEventToKeyUp("character_left",  "left"); //event, keysym
+	mapInputEventToKeyUp("character_down",  "down"); //event, keysym
+	mapInputEventToKeyUp("character_right", "right"); //event, keysym
+
+	mapInputEventToKeyDown("character_attack", "space"); //event, keysym
+
+	//TODO: escape to kill the game
+
+
+	//this function must always be called, or the engine won't run
+	initWindow("Airport", 800, 600, false); //TODO: custom FPS setting
+
+	//kick off the logic of the scene graph
+	loadRootNode("scripts:/airplane.toy");
+}
+
+//Globals go here
+