how to find out x and y offset when trying to drag/move an element in Selenium? - selenium

I am using
builder.moveToElement(element).moveByOffset(x,y).click().build().perform();
In above function I am not sure of values of X and Y, so I have to run test several times to find out the correct values of X and Y.
Example: first I will try with 5, 5 then if I see its little more towards right than 5, 10 and so on.
Is their a way to find it one go?

Try the below code to get exact x & y coordinate & then try your code
WebElement ele= driver.findElement(By.xpath("x-path"));
Point point = ele.getLocation();
int xcord = point.getX();
int ycord = point.getY();

Please try to follow the below details.
If you are using Chrome Browser (use plug in "Cordinates") or Firefox browser (use plug in "Web Developer -> Display Ruler").
After fetching the cordinates from these plug ins, you can use them in your action class for drag and drop.
Please be mindful that, once the action is done, you should put offset to ZERO.
e.g: if in first attempt I have tried to click any element preset at (60,20), then before making the second attempt to click anywhere else, I should set the offset as (-60, -20).
Else you can find the second coordinates and perform the plus minus calculations before attempting to click on that.

Try this code to get coordinates by program itself
//set x and y limits to your webelement size
WebElement element = //your element;
actions = new Actions(remoteDriver);
for (int x = 0; x < element.getSize().getWidth(); x++) {
for (int y = 0; y < getSize().getHeight(); y++) {
actions.moveToElement(element).moveByOffset(x, y).click().build().perform();
if ( //your condition ) {
System.out.println("X and Y when condition satisified are" + x " and " + y);
break;
}
}
}
In my experience , the offset values are nearly equal or in range to half of pixel values of particular point to click in webelement
ie for my full screen close button for video of 1300*700 playing browser , offset value to full screen close button was x=550 and y=320. Try limiting in that range. Smaller Web Elements means it is much easier to find.

Related

Godot Inversing selected rectangle area made up of two Vector2 objects

This seems like a really simple question but I've been at this for a couple of hours and need an outsiders perspective.
I'm migrating a start of a game to Godot from Unity.
I'm selecting an area of tiles (startDragPosition, endDragPosition, both Vector2 objects) from a TileMap and setting them to a certain tile. Currently the dragging only works if the direction is top->bottom and left->right, so if the ending x and y are larger than the starting x and y
In Unity(C#) I had a few simple lines to flip the rectangle values if it was dragged in reverse.
if (end_x < start_x) {
int tmp = end_x;
end_x = start_x;
start_x = tmp;
}
if (end_y < start_y) {
int tmp = end_y;
end_y = start_y;
start_y = tmp;
}
However in when I try a similar approach in Godot it is not working for some reason. I'm thinking that I'm messing up somewhere earlier and any help would be appreciated. If there is an easier way of doing this please tell me I'm fairly new to Godot itself.
Here is the function responsible for dragging in my Godot script(GD)
func Drag():
if(Input.is_action_just_pressed("click")):
startDragPosition=get_global_mouse_position()
if(Input.is_action_pressed("click")):
endDragPosition=get_global_mouse_position()
print("01 START: "+String(stepify(startDragPosition.x-8,16)/16)+"_"+String(stepify(startDragPosition.y-8,16)/16))
print("01 END: "+String(stepify(endDragPosition.x-8,16)/16)+"_"+String(stepify(endDragPosition.y-8,16)/16))
if(endDragPosition.x<startDragPosition.x):
var temp = endDragPosition.x
endDragPosition.x=startDragPosition.x
startDragPosition.x=temp
if(endDragPosition.y<startDragPosition.y):
var temp = endDragPosition.y
endDragPosition.y=startDragPosition.y
startDragPosition.y=temp
for x in range(startDragPosition.x,endDragPosition.x):
for y in range(startDragPosition.y,endDragPosition.y):
get_node("../DragPreview").set_cell((stepify(x-8,16))/16,(stepify(y-8,16))/16,0)
#get_node("../DragPreview").update_bitmask_area(Vector2((stepify(x-8,16))/16,(stepify(y-8,16))/16))
if(Input.is_action_just_released("click")):
print("START: "+String(stepify(startDragPosition.x-8,16)/16)+"_"+String(stepify(startDragPosition.y-8,16)/16))
print("END: "+String(stepify(endDragPosition.x-8,16)/16)+"_"+String(stepify(endDragPosition.y-8,16)/16))
startDragPosition=null
endDragPosition=null
When you drag, you always write to endDragPosition.
When you drag to the left or drag up, and you update endDragPosition, it will have smaller coordinates than it had before. Because of that you swap the coordinates with startDragPosition… And then you keep dragging left or up, and that updates endDragPosition again. The original startDragPosition is lost.
Either you work with a copy when you are deciding the start and end:
var start = startDragPosition
var end = endDragPosition
if(end.x<start.x):
var temp = end.x
end.x=start.x
start.x=temp
if(end.y<start.y):
var temp = end.y
end.y=start.y
start.y=temp
for x in range(start.x,end.x):
for y in range(start.y,end.y):
# whatever
pass
Or you forget this swapping shenanigans, and give the loops a step:
var start = startDragPosition
var end = endDragPosition
for x in range(start.x,end.x,sign(end.x-start.x)):
for y in range(start.y,end.y,sign(end.y-start.y)):
# whatever
pass

A problem with button commands and direction arrays

I currently have a big question for writing code for button commands and direction arrays. I write code for a horizontal button array that is in the form of something like this:
for (var i = 0; i < array_length_1d(left); i ++;){
if (keyboard_check(left[i])){
x -= spd;
break;
}
}
Then I create vertical button arrays where thew upward button array is correct but the downward button array is incorrect while distributing this code:
for (var i = 0; i < array_length_1d(down); i ++;){
if (keyboard_check(down[i])){
y += spd;
break;
}
}
When I try and Run the game, it shows this error:
FATAL ERROR in
action number 1
of Step Event0
for object obj_player:
Variable obj_player.down(100008, -2147483648) not set before reading it.
at gml_Object_obj_player_Step_0 (line 25) - for (var i = 0; i < array_length_1d(down); i ++;){
What am I doing wrong?
Check where you have defined you down variable and see what's different about it compared with the left variable.
The error shows that the down is not yet defined by the time it's about to use it.

Collision response for rectangles

I've been working on a physics engine for about a week now, being stuck for several days trying to work out how to resolve collisions.
My problem is that if there's a box stuck in the middle of 2 other boxes, or between a box and a wall, my application will get stuck in a while loop. It wont resolve the collisions.
This is my code (note: if collision is right side, it means that object A is colliding against object B with its right side. Distance is negative because the objects are inside eachother, and it's in x or y axis depending on side of collision. If you need more code, for example the collision class, which is simply a container of the 2 objects, i can provide that.):
edit: Code edited with new way of dealing with collisions:
//Move colliding objects so they don't collide anymore.
while (getCollidingAmount(objectVector)){
for (int i = 0; i < objectVector.size(); i++){
PhysicsObject* A = objectVector[i];
if (objectVector[i]->getPhysicsType() != PhysicsType::staticT && A->_collision.size() > 0){
Collision collision = A->_collision[A->getDeepestPenetrationCollisionIndex(A->_collision)];
PhysicsObject* B = collision.getObject();
switch (collision.getSide()){
case SideOfCollision::left:
case SideOfCollision::top:
//Opposite velocity
if (A->_saveVelocity.x < 0 && B->_saveVelocity.x > 0){
long double percentageOfVelocity = std::min(abs(B->_saveVelocity.x), abs(A->_saveVelocity.x)) /
std::max(abs(B->_saveVelocity.x), abs(A->_saveVelocity.x));
A->_position.x -= percentageOfVelocity*collision.getVectorPenetration().x;
A->_position.y -= percentageOfVelocity*collision.getVectorPenetration().y;
}
else{
A->_position.x -= collision.getVectorPenetration().x;
A->_position.y -= collision.getVectorPenetration().y;
}
break;
case SideOfCollision::right:
case SideOfCollision::bottom:
//Opposite velocity
if (A->_saveVelocity.x > 0 && B->_saveVelocity.x < 0){
long double percentageOfVelocity = 1 - std::min(abs(B->_saveVelocity.x), abs(A->_saveVelocity.x)) /
std::max(abs(B->_saveVelocity.x), abs(A->_saveVelocity.x));
A->_position.x -= percentageOfVelocity*collision.getVectorPenetration().x;
A->_position.y -= percentageOfVelocity*collision.getVectorPenetration().y;
}
else{
A->_position.x -= collision.getVectorPenetration().x;
A->_position.y -= collision.getVectorPenetration().y;
}
break;
}
updateCollisions(objectVector);
}
}
}
Update
Something wrong with my trigonometry in bottom and top collisions:
sf::Vector2<long double> Collision::getVectorPenetration() const{
long double x;
long double y;
long double velX = _object->getVelocity().x;
long double velY = _object->getVelocity().y;
long double angle = atan2(velY, velX);
if (_side == SideOfCollision::left || _side == SideOfCollision::right){
x = getDistance();
y = x * tan(angle);
return sf::Vector2<long double>(x, y);
}
else if (_side == SideOfCollision::top || _side == SideOfCollision::bottom){
y = getDistance();
x = y / tan(angle);
return sf::Vector2<long double>(x, y);
}
}
Update 2
Thanks to Aiman, i solved my issue. Updated my collisionResponse code aswell to match my new way of dealing with collisions. I'm having another issue now where gravity makes it so i can't move in X direction when touching another object. If anyone familiar with this issue wants to give any tips to solve it, i appreciate it :).
Update 3
So it seems gravity is not actually the problem since i can swap gravity to the x axis, and then be able to slide boxes along the walls. There seems to still be something wrong with the trigonometry.
I can think of many ways to approach the problem.
1-**The more complicated one is to **introduce friction. Here is how I'd implement it, though this is untested and there is a chance I missed something in my train of thought.
Every shape gets a friction constant, and according to those your objects slide when they collide.
First, you need to get the angle that is perpendicular to your surface. To do this, you just get the arctan of the the surface's normal slope. The normal is simply -1/m, where m is the slope of your surface (which you is the ratio/quotient of how much the surface extends in y to/by how much it extends in x). Let's call this angle sNormal for "surface normal". We may also need sAngle-"surface angle" for later (you find that by arctan(m)). There remains some ambiguity in the angle that has to do with whether you're talking about the 'front' or the 'back' of the surface. You'll have to deal with that manually.
Next, you need the angle of the trajectory your object flies in, which you already know how to find (atan2(y,x)). We'll call this angle oAngle for "object's surface angle". Next, you calculate deltaAngle = sNormal - oAngle. This angle represents how much momentum was not blocked completely by the surface. A deltaAngle of 0 means all momentum is gone, and a value of PI/2 or 90 means the 2 surfaces are in parallel touching each other not blocking any momentum at all. Anything in between, we interpolate:
newSpeed = objectSpeed * deltaAngle/(PI/2);
newVelocity.x = cos(sAngle) * objectSpeed;
newVelocity.y = sin(sAngle) * objectSpeed;
Now this assumes 0 friction. If we let a friction of 1 be the maximum friction which doesn't allow the object to "slide", we modify the newSpeed before we apply the newVelocity values, like so: newSpeed *= (1-friction);.
And there we have it! Just give your platform a friction value of less than 1 and your box will be able to slide. If you're dealing with upright boxes, then the surface angle is PI for top wall, 0 for the bottom, PI/2 for the right and -PI/2 for the left wall.
2-The simpler option is to subtract gravity from the object's y-velocity in the solver's calculation.

game maker random cave generation

I want to make a cave explorer game in game maker 8.0.
I've made a block object and an generator But I'm stuck. Here is my code for the generator
var r;
r = random_range(0, 1);
repeat(room_width/16) {
repeat(room_height/16) {
if (r == 1) {
instance_create(x, y, obj_block)
}
y += 16;
}
x += 16;
}
now i always get a blank frame
You need to use irandom(1) so you get an integer. You also should put it inside the loop so it generates a new value each time.
In the second statement, you are generating a random real value and storing it in r. What you actually require is choosing one of the two values. I recommend that you use the function choose(...) for this. Here goes the corrected statement:
r = choose(0,1); //Choose either 0 or 1 and store it in r
Also, move the above statement to the inner loop. (Because you want to decide whether you want to place a block at the said (x,y) location at every spot, right?)
Also, I recommend that you substitute sprite_width and sprite_height instead of using the value 16 directly, so that any changes you make to the sprite will adjust the resulting layout of the blocks accordingly.
Here is the code with corrections:
var r;
repeat(room_width/sprite_width) {
repeat(room_height/sprite_height) {
r = choose(0, 1);
if (r == 1)
instance_create(x, y, obj_block);
y += sprite_height;
}
x += sprite_width;
}
That should work. I hope that helps!
Looks like you are only creating a instance if r==1. Shouldn't you create a instance every time?
Variable assignment r = random_range(0, 1); is outside the loop. Therefore performed only once before starting the loop.
random_range(0, 1) returns a random real number between 0 and 1 (not integer!). But you have if (r == 1) - the probability of getting 1 is a very small.
as example:
repeat(room_width/16) {
repeat(room_height/16) {
if (irandom(1)) {
instance_create(x, y, obj_block)
}
y += 16;
}
x += 16;
}
Here's a possible, maybe even better solution:
length = room_width/16;
height = room_height/16;
for(xx = 0; xx < length; xx+=1)
{
for(yy = 0; yy < height; yy+=1)
{
if choose(0, 1) = 1 {
instance_create(xx*16, yy*16, obj_block); }
}
}
if you want random caves, you should probably delete random sections of those blocks,
not just single ones.
For bonus points, you could use a seed value for the random cave generation. You can also have a pathway random generation that will have a guaranteed path to the finish with random openings and fake paths that generate randomly from that path. Then you can fill in the extra spaces with other random pieces.
But in regards to your code, you must redefine the random number each time you are placing a block, which is why all of them are the same. It should be called inside of the loops, and should be an integer instead of a decimal value.
Problem is on the first line, you need to put r = something in the for cycle

Dynamic grid using FlashDevelop & Actionscript 2.0

I'm new to actionscript. What I'm tryin to do is simulate traffic flow near a 2 lane intersection, following Wolfram's rule 184. To begin with, I'm trying to create a grid (8x8 of which the intersection is between the middle two rows and the middle two columns, like a plus sign) whose cells have the following attributes:
color = white;
car = false;
when clicked:
color = red;
car = true (a car is present);
So, after the user clicks cells to position the cars initially and presses the start button, the simulation will begin.
Here's my code so far (apologies for incorrect formatting):
class Main
{
private var parent:MovieClip;
public static function main(mc:MovieClip)
{
var app = new Main(mc);
}
public function Main(mc:MovieClip)
{
this.parent = mc;
//grid settings
var Cell:MovieClip = mc.createEmptyMovieClip("cell", mc.getNextHighestDepth());
var x:Number = 0;
var y:Number = 0;
var color:Number = 0xffffff;
var car:Boolean = false;
for (y = 0; y < 3 * Stage.height / 8; y += Stage.height / 8)
{
for (x = 3*Stage.width/8; x < 5*Stage.width/8; x+=Stage.width/8)
{
UI.drawRect(Cell, x, y, (Stage.width / 8) - 5, (Stage.height / 8) - 5, color, 100);
}
}
for (y = 3*Stage.height/8; y < 5 * Stage.height / 8; y += Stage.height / 8)
{
for (x = 0; x < Stage.width; x+=Stage.width/8)
{
UI.drawRect(Cell, x, y, (Stage.width / 8)-5, (Stage.height / 8)-5, color, 100);
}
}
for (y = 5*Stage.height/8; y < Stage.height; y += Stage.height / 8)
{
for (x = 3*Stage.width/8; x < 5*Stage.width/8; x+=Stage.width/8)
{
UI.drawRect(Cell, x, y, (Stage.width / 8)-5, (Stage.height / 8)-5, color, 100);
}
}
Cell.onMouseDown()
{
Cell.color = UI.RED;
Cell.car = true;
}
}
}
I know there's quite a few things gone wrong here. First of all, the cell color doesn't change on mouse down. Do i need to make movie clip for each cell in the for loops? I think it would be easier to make a grid of objects with given attributes, but i don't know how to do that. Would really appreciate if someone helps me out.
From what I can tell, issue with your current approach is that using drawRect() literally draws pixels on to the stage, which means you'll have no reference to those shapes in future frames. right now, you've got one MovieClip that has been drawn many times. What you need is a lot of MovieClips so you have a reference to each cell that you can update/edit every frame.
Your best bet is to do the following (I'll just provide pseudo because I'm a bit shaky on AS2 syntax):
A) Create an array to hold all of the Cells. Call it:
var Cells:Array = new Array();
B) During each step of the loops in your constructor, do 4 things.
1) Create a new MovieClip `var tempCell:MovieClip = new MovieClip();
2) Draw a rectangle on to each MovieClip: A tutorial for the graphics API in AS2 http://www.actionscript.org/resources/articles/727/1/Drawing-shapes-with-AS2/Page1.html
3) Add an event listenerto each MovieClip that points to a common event handler. This listener listens for mouse clicks on that MovieClip (or MOUSE_DOWN)
4) and use Cells.push(tempClip) to add that new MovieClip to your array so you now have one object that contains a reference to all of your cells.
C) Create an click event handler that redraws the cell that has been clicked. Try MouseEvent.target
You have another option to using the graphics API to draw rectangles, and that is to simply add and remove stock graphics from your Flash library. You'll have to draw these graphics in Flash and then 'Export for Actionscript' to call them up.
Hope this points you in the right direction!
J