Added node scaling, and a few utility functions

assets/airport-demo/airplane.toy

@@ -0,0 +1,111 @@
+import node;
+
+//constants
+var SPEED: int const = 10;
+var WIDTH: int const = 143;
+var HEIGHT: int const = 75;
+
+
+
+//lifecycle functions
+fn onLoad(node: opaque) {
+	print "onLoad() called";
+}
+
+fn onInit(node: opaque) {
+	print "onInit() called";
+
+	node.loadNodeTexture("sprites:/little_plane.png");
+}
+
+fn onStep(node: opaque) {
+	//TODO: move
+}
+
+fn onFree(node: opaque) {
+	print "onFree() called";
+
+	node.freeNodeTexture();
+}
+
+fn onDraw(node: opaque) {
+//	print "onDraw() called";
+	var parent: opaque = node.getParentNode();
+
+	var px = 0;
+	var py = 0;
+
+	//TODO: get world position
+	if (parent != null) {
+		px = parent.getNodePositionX();
+		py = parent.getNodePositionY();
+	}
+
+	node.drawNode(node.getNodePositionX() + px, node.getNodePositionY() + py, WIDTH, HEIGHT);
+}
+
+//event functions
+fn onKeyDown(node: opaque, event: string) {
+	if (event == "character_up") {
+		node.setNodeMotionY(-SPEED);
+		return;
+	}
+
+	if (event == "character_down") {
+		node.setNodeMotionY(SPEED);
+		return;
+	}
+
+	if (event == "character_left") {
+		node.setNodeMotionX(-SPEED);
+		return;
+	}
+
+	if (event == "character_right") {
+		node.setNodeMotionX(SPEED);
+		return;
+	}
+}
+
+fn onKeyUp(node: opaque, event: string) {
+	if (event == "character_up" && node.getNodeMotionY() < 0) {
+		node.setNodeMotionY(0);
+		return;
+	}
+
+	if (event == "character_down" && node.getNodeMotionY() > 0) {
+		node.setNodeMotionY(0);
+		return;
+	}
+
+	if (event == "character_left" && node.getNodeMotionX() < 0) {
+		node.setNodeMotionX(0);
+		return;
+	}
+
+	if (event == "character_right" && node.getNodeMotionX() > 0) {
+		node.setNodeMotionX(0);
+		return;
+	}
+}
+
+fn onMouseMotion(node: opaque, x: int, y: int, xrel: int, yrel: int) {
+	// print "entity.toy:onMouseMotion(" + string x + ", " + string y + ", " + string xrel + ", " + string yrel + ")";
+}
+
+fn onMouseButtonDown(node: opaque, x: int, y: int, button: string) {
+	// print "entity.toy:onMouseButtonDown(" + string x + ", " + string y + ", " + button + ")";
+
+	//jump to pos
+	node.setNodePositionX(x - WIDTH / 2);
+	node.setNodePositionY(y - HEIGHT / 2);
+}
+
+fn onMouseButtonUp(node: opaque, x: int, y: int, button: string) {
+	// print "entity.toy:onMouseButtonUp(" + string x + ", " + string y + ", " + button + ")";
+}
+
+fn onMouseWheel(node: opaque, xrel: int, yrel: int) {
+	// print "entity.toy:onMouseWheel(" + string xrel + ", " + string yrel + ")";
+}
+

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
+