render method
Implementation
void render(Canvas canvas, Size size){
final Rect totalRect = Rect.fromLTWH(0, 0, camera.viewportWidth, camera.viewportHeight);
canvas.saveLayer(totalRect,Paint());
_drawGrid(canvas);
generateMiniMap();
if(levelInfo[selectedLevel].objects.isEmpty && !isClicked){
tapLocation = null;
}
_hideOutside(canvas, totalRect);
canvas.restore();
}