===== Player movement =====



I denne tutorial vil du lære at:

  * Flytte Player (eller andre objekter) rundt på en 2D scene.
  * Animation
  * Keyboard Input


==== Ressourcer ====

Nedenstående spritesheet indeholder Player animation idle, walk, attack (venstre/højre, op og ned), samt death of player.

  * {{ :images:player.png?linkonly |}}  (højre-klik og download)
Vælg: \\
Project -> Project settings -> General -> Rendering -> Textures\\
Sæt her 'Default texture filter' til 'nearest'.

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  * Opret først en 2D scene, som **Root node**. (omdøb denne evt. til 'world')

I en 2D top-down verden ønsker vi et Object der kan detektere kollisioner, men ikke er påvirket af fysiske kræfter som tyngde (eller andre krafter). Til dette formål bruger vi et 

  * Tilføj (CTRL-A) et '**CharacterBody2D**' objekt. Dette bliver vores Player (omdøb objektet til Player).
  * For at give Player objektet en grafisk repræsentation tilføj nu en 'AnimatedSprite' til Player.
  * For at kunne detektere om Player interagerer med 'noget' tilføjer vi en CollisionShape2D.

{{ :images:animation_add.png?nolink&400 |}}

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==== Keyboard Events ====

For at kunne flytte Player, vil vi opfange nogle Keyboard events (A,S,D,W), og flytte position på Player ud fra disse.


<code csharp>
using Godot;
using System;

public partial class movement : CharacterBody2D
{
	public const float Speed = 20.0f;
	public const float JumpVelocity = -400.0f;

	// Get the gravity from the project settings to be synced with RigidBody nodes.
	public float gravity = ProjectSettings.GetSetting("physics/2d/default_gravity").AsSingle();

	public override void _PhysicsProcess(double delta)
	{
		Vector2 velocity = Velocity;

		// Add the gravity.

		// Handle Jump.
		if (Input.IsActionJustPressed("ui_accept") && IsOnFloor())
			velocity.Y = JumpVelocity;

		// Get the input direction and handle the movement/deceleration.
		// As good practice, you should replace UI actions with custom gameplay actions.
		Vector2 direction = Input.GetVector("ui_left", "ui_right", "ui_up", "ui_down");
		if (direction != Vector2.Zero)
		{
			velocity.X = direction.X * Speed;
		}
		else
		{
			velocity.X = Mathf.MoveToward(Velocity.X, 0, Speed);
		}
		Velocity = velocity;
		//MoveAndSlide();
		MoveAndCollide(Velocity);
	}
	
	
}

</code>

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<code csharp>
using Godot;
using System;
 
public partial class PlayerMovement : CharacterBody2D
{
	public const float speed = 60.0f;
	public string current_dir = "none";
	private Vector2 temp;
	AnimatedSprite2D anim;

	public override void _Ready()
	{
		GD.Print("Printing from Player");
		anim =  GetNode<AnimatedSprite2D>("AnimatedSprite2D");
		anim.Play("idle_front");
	}
	
	public override void _PhysicsProcess(double delta)
	{
		PlayerMovement2(delta);
	}
	
	public void PlayerMovement2(double delta)
	{
		if ( Input.IsKeyPressed(Key.D)){
			current_dir = "right";
			PlayAnimation(1);
			temp = new Vector2(speed,0);
			Velocity = temp;

		}
		else if( Input.IsKeyPressed(Key.A)){
			current_dir = "left";
			PlayAnimation(1);
			
			temp = new Vector2(-speed,0);
			Velocity = temp;
		}
		else if( Input.IsKeyPressed(Key.W)) {
			current_dir = "up";
			PlayAnimation(1);
			temp = new Vector2(0, -speed);
			Velocity = temp;
		}
		else if( Input.IsKeyPressed(Key.S)) {
			current_dir = "down";
			PlayAnimation(1);
			temp = new Vector2(0, speed);
			Velocity = temp;
		}
		else if( Input.IsKeyPressed(Key.V)) {
			//DialogManager dm = GetNode<DialogManager>("/root/DialogManager");
			//DialogManager.LoadDialogue("wizard.json");
			//dm.ShowDialogue();
		}
		else if( Input.IsKeyPressed(Key.B)) {
			//DialogManager dm = GetNode<DialogManager>("/root/DialogManager");
			//dm.HideDialogue();
		}
		else {
			PlayAnimation(0);
			Velocity = new Vector2(0,0);
		}
		
		MoveAndSlide();
	}
	
	void PlayAnimation(int movement){
	
		string dir = current_dir;
	
		if ( dir == "right" ) {
			anim.FlipH = false;
			if (movement == 1) {
				anim.Play("walk_right");
			}
			else if ( movement == 0 ){
				anim.Play("idle_right");
			}
		}
		else if ( dir == "left") {
			anim.FlipH = true;
			if (movement == 1)
				anim.Play("walk_right");
			else if (movement == 0)
				anim.Play("idle_right");
		}
		else if (dir == "up"){
			if ( movement == 1)
				anim.Play("walk_up");
			else if (movement == 0)
				anim.Play("idle_up");
		}
		else if (dir == "down"){
			if (movement == 1)
				anim.Play("walk_down");
			else if (movement == 0)
				anim.Play("idle_front");
		}
	}
	}

</code>

==== Animation ====



==== Shift to Run =====

Tilknytning af en movement modifier ved at holde Shift tasten nede, feks ved RUN vs WALK.


(WIP)





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