Game Lab Documentation

camera.isActive

Category:Game Lab

Returns true if the camera is active, else returns false.

This is a read only property. Use camera.on() and camera.off() to enable or disable the camera.

The camera enables scrolling and zooming for scenes extending beyond the display area. A camera has a position, a zoom factor, and mouse coordinates relative to the view. The camera is automatically created and available for use.

Examples

Scroll around a picture using the mouse, stop scrolling when the left mouse button is down.

// Scroll around a picture using the mouse, stop scrolling when the left mouse button is down.
var sprite = createSprite(200, 200);
sprite.setAnimation("Chicago_skyline,_viewed_from_John_Hancock_Center.jpg_1");
sprite.scale = 2;
camera.off();
function draw() {
  background("white");
  drawSprites();
  if (mouseDown("leftButton")) {
    camera.off();
  } 
  if (camera.isActive()) {
    camera.x = World.mouseX;
    camera.y = World.mouseY;
  }
}

Syntax

camera.isActive()

Returns

Boolean true or false.

Tips

The camera is automatically turned on at the start of each draw() loop.

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