Lerc at 11:34, 29 June 2017

2017-06-29T11:34:12Z

Lerc: Created page with "Useful things to refer to. Variables If statements Coordinates Keycodes The API page has a list of some of the functions you can use such as *[..."

2017-06-26T23:32:14Z

Created page with "Useful things to refer to. *Variables *If statements *Coordinates *Keycodes The API page has a list of some of the functions you can use such as *[..."

New page

Useful things to refer to.

*[[Variables]]
*[[If statements]]
*[[Coordinates]]
*[[Keycodes]]

The [[API|API page]] has a list of some of the functions you can use such as

*[[API#setColour.28colourValue.29.3B|setColour()]]
*[[API#clear();|clear()]]
*[[API#fillCircle_.28x.2C_y.2C_radius.29.3B|fillCircle()]] .
*[[API#keyIsDown.28keyCode.29|keyIsDown()]] .

<edcode>var cx=320;
var cy=240;

var maryx=200;
var maryy=240;

var power=0.1;
var penSize=4;

var lastx=cx;
var lasty=cy;

function move() {
var dx = cx-lastx;
var dy = cy-lasty;

lastx=cx;
lasty=cy;

cx=cx+dx;
cy=cy+dy;

// the arrow keys have key codes 37,38,39 and 40

if (keyIsDown(38)) {
cy-=power;
}

if (keyIsDown(40)) {
cy+=power;
}

if (keyIsDown(37)) {
cx-=power;
}

if (keyIsDown(39)) {
cx+=power;
}

//keep cx onscreen
if (cx>640 ) {
cx=640;
}

if (cx <0) {
cx=0;
}

//keep cy onScreen
if (cy>480) {
cy=480;
}

if (cy <0) {
cy=0;
}

//move mary towards cx,cy
if (maryy < cy) {
maryy+=0.3;
}

if (maryy > cy) {
maryy-=0.3;
}

if (maryx <cx) {
maryx+=0.3;
}

if (maryx > cx) {
maryx-=0.3;
}

if (keyIsDown(32)) {
clear();
}

setColour("purple");
fillCircle(cx,cy,penSize);

setColour("red");
fillCircle(maryx,maryy,penSize);

}

run(move);
</edcode>

@@ Line 5: / Line 5: @@
 *[[Coordinates]]
 *[[Keycodes]]
+*[[Functions]]
 The [[API|API page]] has a list of some of the functions you can use such as
@@ Line 19: / Line 19: @@
 var maryx=200;
 var maryy=240;
 var power=0.1;
@@ Line 25: / Line 28: @@
 var lastx=cx;
 var lasty=cy;
 function move() {
@@ Line 88: / Line 99: @@
      maryx-=0.3;
+   }
-    if (keyIsDown(32)) {
+    if (franky > cy) {
-      clear();
+      franky-=0.3;
+    }
     setColour("purple");
     fillCircle(cx,cy,penSize);
-    setColour("red");
+    drawSpot(maryx,maryy);
-    fillCircle(maryx,maryy,penSize);
+    drawSpot(frankx,franky);
-−
+}
 run(move);
 </edcode>

Yesterday - Revision history

Lerc at 11:34, 29 June 2017

Lerc: Created page with "Useful things to refer to. *Variables *If statements *Coordinates *Keycodes The API page has a list of some of the functions you can use such as *[..."

Lerc: Created page with "Useful things to refer to. Variables If statements Coordinates Keycodes The API page has a list of some of the functions you can use such as *[..."