PACattack/paperline.html at master · macewanCS/PACattack · GitHub

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<!DOCTYPE html>
<html>

<body>

	<canvas id="myCanvas" resize></canvas>

</body>


<head>
<!-- Load the Paper.js library -->
<script type="text/javascript" src="http://www.andrewkind.com/paper.js"></script>
<!-- Define inlined PaperScript associate it with myCanvas -->


<script type="text/paperscript" canvas="myCanvas">

	// Create a raster item using the image tag with id='mona'
	var raster = new Raster('turtle.png');

	// Move the raster to the center of the view

	// home coordinates
	var xhome = 150;
	var yhome = 150;

	// turtle coordinates
	var xcoord = xhome;
	var ycoord = yhome;

	// image position
	raster.position = (xcoord, xcoord);

	// Scale the image by 50%
	raster.scale(0.5);

	// create path object for turtle
	var turtlePath = new Path();
	turtlePath.strokeColor = 'black';
	turtlePath.add(new Point (xcoord, xcoord));

	//Lets create a list of events...

	var angle = 90; //this is to keep track of the turtles angle.


	//sample commands: Pentagon
	var event1 = [];
	event1.command = "right";
	event1.amount = 45;

	var event2 = [];
	event2.command = "forward";
	event2.amount = 30;

	var event3 = [];
	event3.command = "right";
	event3.amount = 45;

	var event4 = [];
	event4.command = "forward";
	event4.amount = 30;

	var event5 = [];
	event5.command = "right";
	event5.amount = 45;


	var event6 = [];
	event6.command = "forward";
	event6.amount = 30;

	var event7 = [];
	event7.command = "right";
	event7.amount = 45;

	var event8 = [];
	event8.command = "forward";
	event8.amount = 30;

	var event9 = [];
	event9.command = "right";
	event9.amount = 45;

	var event10 = [];
	event10.command = "forward";
	event10.amount = 30;

	var event11 = [];
	event11.command = "right";
	event11.amount = 45;

	var event12 = [];
	event12.command = "forward";
	event12.amount = 30;

	var event13 = [];
	event13.command = "right";
	event13.amount = 45;

	var event14 = [];
	event14.command = "forward";
	event14.amount = 30;

	var event15 = [];
	event15.command = "right";
	event15.amount = 45;

	var event16 = [];
	event16.command = "forward";
	event16.amount = 30;

	var event17 = [];
	event17.command = "right";
	event17.amount = 19;

	var event18 = [];
	event18.command = "forward";
	event18.amount = 41;

	var event19 = [];
	event19.command = "right";
	event19.amount = 110;

	var event20 = [];
	event20.command = "forward";
	event20.amount = 35;

	//list of events
	var eventList = [];

	//add samples into event list
	eventList.push (event1);
	eventList.push (event2);
	eventList.push (event3);
	eventList.push (event4);
	eventList.push (event5);
	eventList.push (event6);
	eventList.push (event7);
	eventList.push (event8);
	eventList.push (event9);
	eventList.push (event10)
	eventList.push (event11)
	eventList.push (event12)
	eventList.push (event13)
	eventList.push (event14);
	eventList.push (event15);
	eventList.push (event16);
	eventList.push (event17);
	eventList.push (event18);
	eventList.push (event19);
	eventList.push (event20);
	//eventList.push (event5);

	var x = 0;

	function onFrame(event) {

		//check if we have an event in list..
		if (x < eventList.length) {
			//we must check which command is issued, starting at x = 0
		/*	if (eventList[x].command == "forward") {

				//check if we have amount value (our distance to travel)
				if (eventList[x].amount > 0) {
					//move turtle
					raster.translate(0,-1);

					//decrement distance
					eventList[x].amount--;
					ycoord--;
					turtlePath.add(new Point (xcoord, ycoord)); // increase path
				}
				else {
					//check if we have to increment to next event, or are we done
					if (x < eventList.length-1) {
					x++;
					console.log("finished event " + x);
					}
				}
			} */

			if (eventList[x].command == "right") {

				if (eventList[x].amount > 0) {
					//rotate one degree
					raster.rotate(1);

					//decrement our event angle
					eventList[x].amount--;
					angle++; //increment our turtle angle
				}
				else {
					//check if we have to increment to next event, or are we done
					if (x < eventList.length-1) {

					x++;

					}
				}
			}

			if (eventList[x].command == "forward") {

				if (eventList[x].amount > 0) {

					//we need to figure out x and y points to reach
					var xDest;
					var yDest;
					angle = -angle;
					//convert to radians
					var angleRadians = (angle * (Math.PI / 180));

					//calculate coordinate
					yDest = 1 * Math.sin(angleRadians);
					yDest = -yDest; //y coord increase in down direction
					xDest = 1 * Math.cos(angleRadians);

					// increase path
					turtlePath.add(new Point (xcoord - xDest, ycoord - yDest));

					//move turtle to new point
					raster.position.x = xcoord - xDest;
					raster.position.y = ycoord - yDest;

					//update new coordinate for turtle position
					xcoord = xcoord - xDest;
					ycoord = ycoord - yDest;

					//set angle back
					angle = -angle;
					eventList[x].amount--;
				}
				else {
					x++;
				}
			}
		}
	}  //END ON FRAME FUNCTION

	// test function for onkeydown

	/*function onKeyDown(event) {
	raster.translate(-1,0);
	raster.rotate(1);
	} */

</script>

</head>


</html>