When moving a KinematicBody2D, you should not set its position property directly. By default, a kinematic body moved with move_and_slide () or move_and_collide () will push any rigid bodies it collides with. extends SGKinematicBody2D const MOVEMENT_SPEED : = 65536 * 4 # We're still using the _physics_process() method even though we aren't using # Godot's builtin physics engine because it gives us a fixed tick. You can avoid problems and simplify development if you understand how each each works and what their pros and cons are. Share. A specialized steering agent that updates itself every frame so the user does not have to using a KinematicBody2D. You code works, but you need to make sure that "up" "down" "left" "right" is present in your inputmap, without that, the code will run, but the character won't move. Create a Label node and call it "Score_Label". This is my current movement code, without pathfinding. Sorry about that. And there's no reason why that should change. How can I script smooth movement for KinematicBody2D? my Player is an KinematicBody2d and it has an animatedSprite Node what is called Sprite. No. Solution. The whole point of KinematicBody2D is that they aren't affected by physics. It's time to code! I'm trying to implement some sort of a dash mechanic for an NPC, but I realized that tweening the position directly would not respect the collisions of the other bodies in the scene and . For this example, add a KinematicBody2D with two children: a Sprite and a CollisionShape2D. You need add actions, so up, down, left right, and then once you add them, find them at . How to stop KinematicBody2D from moving if colliding with StaticBody2D and allow it to move again? Jun 1, 2020 - Explore Zahar Nomad's board "GODOT Video Tutorials" on Pinterest. In this tutorial, we won't be going in-depth with features like double-jumps, crouching, wall-jumps, or animation. In Godot, Sprite nodes can be hidden. move_and_slide attempts to slide against a surface upon colliding, while move_and_collide does not have a standard response. +1 vote . This impacts how you move and handle collisions with each one of them. If you are not keen on reading, I have created a video series on this here is the first video in the series. before posting your first questions. In the post Godot Tutorial - Part 5: Player movement, we saw how to move the player using keyboard and joypad.In the comments of that tutorial, a reader asked for suggestions on how to move the player by dragging it around with the mouse.In this small bonus tutorial, we will see how to drag KinematicBody2D nodes.. Vector2 move_and_slide (Vector2 linear_velocity, Vector2 up_direction=Vector2( 0, 0 ), bool stop_on_slope=false, int max_slides=4, float floor_max_angle=0.785398, bool infinite_inertia=true ). See the rest of the recipes for other solutions. (0, 1000) # Movement Constants const FLOOR_NORMAL = Vector2(0, -1) const SLOPE_FRICTION = 20 . 2D pathfinding with KinematicBody2D using move_and_slide. KinematicBody2D slows when colliding with RigidBody2D. See more ideas about videos tutorial, indie games, tutorial. I'm learning both game development and Godot. KinematicBody2D nodes are special types of physical bodies that are meant to be user-controlled. Press scan to import a project. # ufo_hud_info = "UFO collided with:\n\n" + get_node ("ufo_KinematicBody2D").get_collider ().get_name () I also updated the projects settings to map the w, a, s, and d keys to player_up, player . Trying to decide which one to use for your project can be confusing. Extract the contents of the Zip file. OK, you're probably using KinematicBody2D already, . Tactical RPG movement This demo and intermediate-level tutorial shows how to code a grid-based movement as in games like Fire Emblem or Advance Wars. Welcome to Godot Engine Q&A, where you can ask questions and receive answers from other members of the community. Player Controller with KinematicBody2D (Godot 2.2) Ivan Skodje. I will use this script to spawn any game objects which are not static with code. Godot offers a number of collision objects to provide both collision detection and response. movement_type. This will place the text in the center of the screen. . Thanks for answering the question, but I also have a follow up question: I eventually want the object to be able to change direction whilst moving, i.e with the current state in the code, the object can rotate and move in the direction of rotation, but only independently of each other. We now need to look at creating a spawner script which will initially spawn a bunch of enemies randomly at a random position. Click on the Player node and add an AnimatedSprite node as a child. Basic movement. KinematicBody2D in Godot makes it especially easy to detect if the character is on the floor or not. I'm fairly new to Godot and game dev in general so please bear with me. Movement and walls¶ If you've downloaded the sample project, this example is in "BasicMovement.tscn". Here we'll discuss the fundamentals of platformer movement. However, # you could certainly implement your own fixed tick, you don't have to use # _physics_process() with SG Physics 2D. The issue seems quite common, even visible on some youtube tutorials. Learn to Make Games > GDQuest Documents > Godot Steering AI Framework > Code Reference . # simple platoformer movement for godot with friction and acceleration # "move_right", "move_left" and "move_up" are defined in project setting/input map # the node that we'll use is kinematic body 2d extends KinematicBody2D # the movement variables (mess around with them to make the movement the way you like) export (int) var speed = 300 export (int) var jump_speed = -600 export (int) var . move_and_collide When using move_and_collide(), the function returns a KinematicCollision2D object upon collision. In this tutorial, we won't be going in-depth with features like double-jumps, crouching, wall-jumps, or animation. Displays the unit's walkable area. Issue description: KinematicBody2D only detects collisions from all sides when stationary(and not even that in some cases) when moving it only detects collisions from the direction its moving towards even though there is no oneway collision enabled. In this tutorial we will be covering the basics of KinematicBody2D, sprites, spriteanimation, GDscript and various movements we can achieve with godot in a top down game view. In this tutorial the movement code is very different from the one in the RPG tutorials, . In the popup, set the Template to Empty before pressing the Create button.. Let's start with the class's properties. Add the following input actions (see InputEvent for details): Use the Godot "icon.png" as the Sprite's texture (drag it from the Filesystem dock to the Texture property of the Sprite). Then, we code the horizontal movement In this tutorial I teach how to create smooth movement using the KinematicBody2D node in Godot 3. class_name Player extends KinematicBody2D var speed : = 500.0 var jump_impulse : = 1200.0 var base_gravity : = 4000.0 var _velocity : = Vector2 . Godot: RigidBody vs KinematicBody. Usages Overriding physics parameters (such as gravity) in a given region. godot logo. It was funded by our backers and Godot 2D Secrets. Social login is currently unavailable. Solution. 3- In line 85 and 86: Make sure that this is the name of your source files folder by default it is "src" so change it to whatever your source files folder name is. Moving the player with code¶. extends KinematicBody2D #variables #variables-->signals #variables-->signals-->looking_direction_signals signal lookin_left signal lookin_right signal lookin_up signal lookin_down #variables-->signals-->moving_value_signals signal player_moving_signal signal player_stopped_signal #variables . To override physics properties, such as gravity or damping, in a defined area. We pass the velocity and a direction vector of (0, 1) for the up_direction parameter. You can use the Godot icon ("icon.png") for the Sprite's texture or use any other 2D image you have. Yes, that's still the case. About Godot 2d Movement . An AnimatedSprite requires a SpriteFrames resource, which is a list of the animations it can display. Is there any way to use Tween nodes to change the positions of KinematicBody2D nodes? Godot provides some built-in tools to assist, but there are as many solutions as there are games. This interaction ignores the rigid body's physics properties due to the kinematic move function's infinite_inertia parameter. // -- Paddle.cs -- using Godot; public abstract class Paddle : KinematicBody2D { // common methods & properties // the one method that is different and should be override public abstract Vector2 GetMovement(); } // -- PaddleHorizontal.cs -- using Godot; public class PaddleHorizontal : Paddle { public override Vector2 GetMovement . It's not like it's a bug! We'll use KinematicBody2D for these examples, but the principles will apply to other node types (Area2D, RigidBody2D) as well. A Godot 2D top down movement tutorial for beginners. Godot 3.1 Tutorial - Smooth Top-Down Movement - YouTube. The AnimatedSprite will handle the appearance and animations for our player. extends KinematicBody2D var motion = Vector2() func _physics_process(delta): if Input.is_action_pressed("ui_right"): motion.x = 250 elif Input.is_action_pressed("ui_left"): motion.x = -250 else: motion.x *= 0.95 # slow down by 5% each frame - play with this value # i.e. Open Project -> Project Settings and select the "Input Map" tab. Sign Up , it unlocks many cool features! Displays the unit's path preview. Best Practices . The issue before was that it was using movement in move_and_slide instead of velocity, leading to the character moving at 1 pixel a second. This is my current movement code, without pathfinding. DOWN} tile_size should be set to match the size of your tiles. Rename the Restart node to SaveGame and the Quit node to MainMenu, and then change the text of their labels to SAVE GAME and MAIN MENU.Then, open the MenuPopup.gd script and in … 0 votes . Then, open Godot and press Scan to import the project. Pastebin.com is the number one paste tool since 2002. When moving a kinematic body, you should not set its . First, add KinematicBody2D as a child of Root: . I'm making the simplest game possible: you move an icon around with buttons, but the movement seems jittery, not smooth at all. With the Label node selected, press the "Layout" tab and select "Full Rect". We designed a player-controlled ship to test our camera for this small demo. # # check to see if the ufo is colliding, if it is then implement "SLIDE" and update ufo hud information. Warning! extends KinematicBody2D var turn_speed = 0.5 # in radians/sec var move_speed = 100 # pixels/sec func _physics_process(delta): rotation +=turn_speed * delta move_and_collide (transform.x * move_speed * delta) Your turning radius then becomes a function of the rotation and movement speeds. edited 3y. Kinematic and Rigid bodies are two common nodes for dealing with physics and collisions. Godot provides some built-in tools to assist, but there are as many solutions as there are games. The Player Controller with KinematicBody2D is a simple demonstration of how you can implement your own player in a platformer-style game. See the rest of the recipes for other solutions. The type of movement the body . You can avoid problems and simplify development if you understand how each each works and what their pros and cons are. Wend1go commented on Apr 9, 2015. func _physics_process (delta: float)-> void: var vector . Sprite animation¶. One is called move_and_collide(velocity) and another is called move_and_slide(velocity). Moving a simple sprite through set_pos works much smoother. It's a KinematicBody2D node with the following code attached to it: A. It is done using a youtube tutorial, which I can't seem to find for some reason. At the end of this tutorial you should have a character which you can move using the arrow keys on the keyboard and . . In the post Godot Tutorial - Part 5: Player movement, we saw how to move the player using keyboard and joypad.In the comments of that tutorial, a reader asked for suggestions on how to move the player by dragging it around with the mouse.In this small bonus tutorial, we will see how to drag KinematicBody2D nodes.. godot spawn enemies tree. This same tutorial will also work for godot 3 if you have a slightly older version of godot. Movement on a grid is common in many games, especially 2D games. Three are related to movement and two map the mouse wheel button to zooming in and out. Using KinematicBody2D. The character's idle sprite starts out hidden and the walking sprite is shown. We declare three variables at the top: move_speed, gravity, and velocity. . This recipe applies equally well in both 2D and 3D nodes. Moves the body along a vector. # Character that moves and jumps. The fundamental difference between those two types is that RigidBody is influenced by physics, while KinematicBody is not. KinematicBody2D is the key. Now Open your project in Godot and do the following : Create a 2D Scene and save it. Movement and collision. In both cases FPS are quite constant. (targetPos - position).length() > 5: move_and_slide(velocity, floor_normal, true) # need to stop movement if clicking too close to a character elif distance < 5: move_and_slide(velocity * 0, floor_normal, true) . The tutorial is aimed at people new to Godot but not nece. 2D pathfinding with KinematicBody2D using move_and_slide. Alternatively you may use get_slide_collision, which gives you a KinematicCollision2D object: for i in get_slide_count (): var collision = get_slide_collision (i) print ("Collided with: ", collision.collider.name) Which will let you identify with what did the KinematicBody2D collide with, and then you could pick a sound accordingly. Rotation + movement. For now, the only important thing to know is that KinematicBody2D has an API for moving objects. Godot offers a number of collision objects to provide both collision detection and response. godot tile based movement not working properly. Godot. Instead, you use the move_and_collide() or move_and_slide() methods. If the body collides with another, it will slide along the other body rather than stop immediately. KinematicBody2D and PathFollow2D nodes (probably other higer level nodes too) jitter in movement. You can use this information to … - Selection from Godot Engine Game Development Projects [Book] We have already seen an example in the Player movement tutorial, where we used KinematicBody2D to move the player.. Area2D Area2D nodes provide detection and influence. var movement_type: int. With a team of extremely dedicated and quality lecturers, godot tutorial 2d movement will not only be a place to share knowledge but also to help students get inspired to explore and discover many creative ideas from themselves. +2 votes. The tutorial is aimed at people new to Godot but not nece. Cursor to navigate the map and select a unit. KinematicBody2D nodes detect collisions with other bodies, but don't automatically move according to physical properties such as gravity or friction.They must be moved manually by the user through scripts. Player Movement. . In this godot 2d platformer tutorial using godot 3.1 we will look at how we can implement physics, 2d player animation, sound and pickups. This recipe applies equally well in both 2D and 3D nodes. export var angular_speed : = 5.0 func _physics_process(delta): # See how we're using Input.get_action_strength() to calculate the direction we rotate. Pressing left/right rotates the character, while up/down moves it forward or backward in whatever direction it's facing. In this tutorial I teach how to create smooth movement using the KinematicBody2D node in Godot 3.1. . We going to do this in a script called SceneSpawner. Kinematicbody2d movement. KinematicBody2D. export var speed : = 500 # Rotation speed in radians per second. at the moment my player code look like this: extends KinematicBody2D const UP = Vector2 (0,-1) const GRAVITY = 20 const ACCELERATION = 50 const MAX_SPEED = 200 const JUMP_HEIGHT = -500 var motion . Start with a KinematicBody2D with two children: Sprite and CollisionShape2D. It's time to make the magic happen. This object contains information about the collision and the colliding body. KinematicBody2D movement doesn't work with Joint2D, is it still the case? # The value will be in the [-1.0, 1.0] range . extends KinematicBody2D # The player is a kinematic body, hence extends Kine.. # Adjustable variables of the player # export is used to allow to edit the values outside the script export var speed = 500 # The speed of the character export var gravity = 32 # The gravity of the character export var jumpforce = 800 # The jump force of the character var motion = Vector2.ZERO func _physics_process . Welcome to Godot Engine Q&A, where you can ask questions and receive answers from other members of the community. Godot Tutorial - Part 8: 2D Sprite animation. In Part 1 We are going to cover Player Movement and Player Shooting. Godot's Movement and Collisions. Choose what you like, we are going to be providing both source codes. Then, still with the label selected, go to the inspector tab on the right and set the "Align" and "Valign" properties to "Center". The KinematicBody2D to keep track of. If you want to just move the node without any collision detection, then you just need to modify the node's position/global_position so that it moves.. For example: extends KinematicBody2D var motion = Vector2() # You want to call move_and_slide or move_and_collide only # in _physics_process if you can help it, so that the character moves # with an up-to-date physics world func _physics_process . Movement using KinematicBody2D. Detect collision (if another body enter or exit) Example Coin (detect collision if player collect it, but . To create one, find the Frames property in the Inspector and click . To get started, I created a new scene with an KinematicBody2D node, a Sprite for idle animations, another Sprite for walking animations, and a couple of other nodes that are not used yet. Welcome to Godot . # Movement where the character rotates and moves forward or backward. I'm creating a top down game with 8 way movement via the arrow keys. We're going to use the input actions we created in the last part to move the character. Sorry about that. Todo this, menu top left press "Project" then "Project Settings", then select Input Map tab. Attach a script to it. Issue description: when KinematicBody overlapped(for example they are spawned at the same position), call move, even the argument is vector2d(0,0), the bodies will move to some uncertain positions, far away from its original position, it seems a force is add to the bodies, and it can even move through static collide bodies. . The player is a KinematicBody2D node and can collide with a wall, which is a StaticBody2D node. I am trying to replicate the forward movement of an asteroids-like spaceship.I implemented the rotation functionality (left and right keys), but I can't make the spaceship move forward and I press up.Here's what I've tried so far: I believe this is a super simple issue I'm having. Notice that there is a warning symbol next to the node. Welcome to Godot Engine Q&A, where you can ask questions and receive answers from other members of the community. Let's write a script for the player movement. You can find a demo on . . In one of my current projects (a "falling blocks" game), this particular problem came up: how do you get grid-based (or discrete) movement on the X-axis while retaining free, continuous movement on the Y-axis?Specifically, I'm using the Godot engine, but the same principle should carry over to any game engine or development . The collision mostly works fine (I'm using move_and_slide for the player . Open up KinematicBody2D in the Godot documentation to learn more. . Godot converts relative mouse motion into a Vector2 where mouse movement going up and down is 1 and -1 respectively. OS/device including version: xubuntu 20.04. Features: Grid-based movement. In particular, we will animate our player by adding idle animations, walk animations and two types of attacks (sword and fireball). They are part of Godot's physics engine, which we will discuss in depth in the next tutorial. Next, create . There are two methods you can use with KinematicBody2D to move around. Warning! Godot tries to find a way to make your movement possible and the remainder is what Godot couldn't transform into a . Pandas how to find column contains a certain value Recommended way to install multiple Python versions on Ubuntu 20.04 Build super fast web scraper with Python x100 than BeautifulSoup How to convert a SQL query result to a Pandas DataFrame in Python How to write a Pandas DataFrame to a .csv file in Python Looking at the code again, it might need acceleration and deceleration too, otherwise the player might end up "sliding" around as if they are on ice. This interaction ignores the rigid body's physics properties due to the kinematic move function's infinite_inertia parameter. godot movement code; godot rigidbody move x and y 2d¨ make a charachter auto move in godot; godot 2d controls moving; godot icon movement; godot move character up; godot movement script; 2d rpg gds movement script; godot moveto; move up godot; rpg movement godot; godot movement; player movement godot; godot engine charactar movement; movement . To move around for other solutions, tutorial understand how each each works and what their pros and are... A child Settings to map the w, a, where you can avoid and! Is my current movement code, without pathfinding a number of collision objects to both! Will use this Q & amp ; a, where you can use with KinematicBody2D a. Sometimes called & quot ; Asteroids-style & quot ; because it resembles how that classic arcade game worked m a! Speed: = 500.0 var jump_impulse: = 500.0 var jump_impulse: 500.0... ] range can detect when objects overlap and can collide with a wall, which I can & # ;! Property directly the whole point of KinematicBody2D nodes KinematicBody2D.move result in weird movement between... < /a > Solution one! //Www.Xpcourse.Com/Godot-2D-Movement '' > 2D movement - XpCourse < /a > moving the player movement tutorial, where you can problems... ; Asteroids-style & quot ; because it resembles how that classic arcade worked! Rpg tutorial - XpCourse < /a > moving the player Controller with KinematicBody2D is a simple Sprite through set_pos much. There any way to use for your project can be confusing used KinematicBody2D to move around re going be! While KinematicBody is not an API for moving objects should be set match! Down, left right, and d keys to player_up, player physics... Members of the community pastebin is a KinematicBody2D, you & # ;... Damping, in a defined area and can collide with a wall, which I &. Or RigidBody2D, it will slide along the other body rather than stop immediately 3D nodes base_gravity =! A video series on this here is the first video in the next tutorial updated... Which we will discuss in depth in the Inspector and click Godot press. > movement and collision our camera for this small demo - XpCourse < /a > Controller... A website where you can move using the KinematicBody2D node and select the & quot ; Input &! Surface upon colliding, while KinematicBody is not movement speed in radians per second a period! Does not have a character which you can use with KinematicBody2D is that KinematicBody2D has an for... ; a, where we used KinematicBody2D to move the player ; void: var.. Simple demonstration of how you move and handle collisions with each one of them other... Coin ( detect collision ( if another body a KinematicBody2D, you should not its. Down, left right, and then once you add them, find Frames. Using move_and_slide for the up_direction parameter enemies randomly at a random position property.... Questions and receive answers from other members of the community its position property directly video series on here... Nodes ( probably other higer level nodes too ) jitter in movement very different the. Their pros and cons are with move_and_slide ( ) or move_and_collide ( ).... Any rigid bodies are two methods you can avoid problems and simplify development you. Is it possible to make Games & gt ; GDQuest Documents & gt ; Godot Steering AI Framework gt... The Frames property in the last part to move around new to Engine... Re probably using KinematicBody2D already, godot kinematicbody2d movement project - & gt ; void: var.! Youtube tutorial, indie Games, tutorial save it this same tutorial will also be type of is... Physics Engine, which I can & # x27 ; m creating a top down Shooter in Godot will.: float ) - & gt ; code Reference AnimatedSprite will handle the and... Than stop immediately symbol next to the node online for a set period of time Secrets. Player node and select a unit movement via the arrow keys on the and... Indie Games, tutorial no reason why that should change to decide which one to godot kinematicbody2d movement for project... Gdquest < /a > moving the player node and add an AnimatedSprite as... This same tutorial will also be as gravity ) in a script called.! Or backward in whatever direction it & # x27 ; t seem find. Some reason called & quot ; Asteroids-style & quot ; tab any bodies... Providing both source codes for your project can be confusing and click direction vector of (,... The projects Settings to map the w, a, where you can avoid problems and simplify development if have!, down, left right, and velocity: a Sprite and a direction vector of ( 0, )! Tutorial, indie Games, tutorial to add a KinematicBody2D, you & # ;! Tactics RPG tutorial - Dragging the player with the circle & # x27 ; s path preview s a! Random position handle collisions with each one of them find for some reason deterministic... /a. Walking Sprite is shown seems quite common, even visible on some youtube.... Exit ) example Coin ( detect collision ( if another body should be set to match size! That there is a super simple issue I & # x27 ; t by., it will slide along the other body is a StaticBody2D node the magic.... Node to animate sprites you understand how each each works and what their pros cons. Project in Godot 3 that KinematicBody2D has an AnimatedSprite node to animate sprites it & # x27 ; m a... Will initially spawn a bunch of enemies randomly at a random position and answers. Pass the velocity and a CollisionShape2D up_direction parameter bodies are two methods you can store text online for a period! Other solutions SG physics 2D and 3D nodes > movement and collision from other of. Mouse < /a > moving the player movement quite common, even visible on youtube... Or backward in whatever direction it & # x27 ; m using move_and_slide for the player node and collide. Collide with a wall, which I can & # x27 ; s idle Sprite starts out hidden the. Affected by physics [ -1.0, 1.0 ] range questions and receive answers from other members of the.... A surface upon colliding, while KinematicBody is not Godot tutorial - Dragging the player is website! Map and select the & quot ; Input map & quot ; tab s radius it funded... Tactics RPG tutorial - Dragging the player node and add an AnimatedSprite node what is called.... When objects overlap and can collide with a wall, which is a warning symbol next to the.. Or damping, in a script for the up_direction parameter this in a game! Stop if a collision is detected with another, it will also be simplify development if have! So up, down, left right, and then once you add them, find the Frames in... We pass the velocity and a direction vector of ( 0, 1 for! Bodies it collides with another, it will slide along the other body is a warning symbol next to node... Video in the series should be set to match the size of your tiles in per... There & # x27 ; t seem to find for some reason code! Need add actions, so up, down, left right, and keys. In pixels per second resource, which is a KinematicBody2D node and add an AnimatedSprite node what is called (! Tutorial I teach how to create smooth movement using the arrow keys on the keyboard..: move_speed, gravity, and d keys to player_up, player ) will any! And handle collisions with each one of them discuss in depth in the last part to move character! Can collide with a wall, which is a KinematicBody2D or RigidBody2D, it will slide the. Hidden and the walking Sprite is shown how you move and handle collisions with each one of them node animate. We have already seen an example in the next tutorial to player_up, player = var! Already, how that classic arcade game worked this will place the text in series. Even visible on some youtube tutorials the map and select Attach script spawn... Slope_Friction = 20 physics, while move_and_collide does not have a slightly older version of Godot of..., 1 ) for the player with the mouse < /a > moving player. Given region can avoid problems and simplify development if you understand how each each works and their! Find for some reason spawner script which will initially spawn a godot kinematicbody2d movement of enemies at! Slightly older version of Godot the character seems quite common, even on... Floor_Normal = Vector2 ( 0, 1000 ) # movement Constants const FLOOR_NORMAL =.. Other body is a list of the community documentation in... < /a > KinematicBody2D.! Godot Tactics RPG tutorial - Dragging the player node and can collide with a wall, is. Var jump_impulse: = 500.0 var jump_impulse: = 500 # Rotation speed in radians per second in... Rigidbody2D, it will also be keys to player_up, player fundamentals platformer... Is aimed at people new to Godot Engine Q & amp ; a, s, and keys! And deterministic... < /a > Rotation + movement right, and d keys to,. The character which are not static with code node what is called move_and_slide ( velocity ) random... Without pathfinding pressing left/right rotates the character circle & # x27 ; d start! Up_Direction parameter have created a video series on this here is the first video the.
Connecting Math Concepts Placement Tests, Fedex San Fernando Contact Number, Target 10% Off Gift Cards December 2021, How Effective Is Unani Medicine, Northumbria University Llm, Target 10% Off Gift Cards December 2021, Unoccupied Play Examples, Technology Used In American Football,