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Add C# code

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skyace65
2018-04-13 23:20:29 -04:00
parent 788eedc6d9
commit 1e499d0c96
1 changed files with 169 additions and 5 deletions
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174
tutorials/physics/using_kinematic_body_2d.rst
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@@ -116,7 +116,14 @@ the same collision response:
.. code-tab:: csharp
Coming soon
// using MoveAndCollide
var collision = MoveAndCollide(velocity * delta);
if (collision != null)
{
velocity = velocity.Slide(collision.Normal);
}
// using MoveAndSlide
velocity = MoveAndSlide(velocity);
Anything you do with ``move_and_slide()`` can also be done with ``move_and_collide()``,
it just might take a little more code. However, as we'll see in the examples below,
@@ -170,7 +177,42 @@ Attach a script to the KinematicBody2D and add the following code:
.. code-tab:: csharp
Coming soon
using Godot;
using System;
public class KBExample : KinematicBody2D
{
public int Speed = 250;
private Vector2 _velocity = new Vector2();
public void getInput()
{
// Detect up/down/left/right keystate and only move when pressed
_velocity = new Vector2();
if (Input.IsActionPressed("ui_right"))
{
_velocity.x += 1;
}
if (Input.IsActionPressed("ui_left"))
{
_velocity.x -= 1;
}
if (Input.IsActionPressed("ui_down"))
{
_velocity.y += 1;
}
if (Input.IsActionPressed("ui_up"))
{
_velocity.y -= 1;
}
}
public override void _PhysicsProcess(float delta)
{
getInput();
MoveAndCollide(velocity * delta);
}
}
Run this scene and you'll see that ``move_and_collide()`` works as expected, moving
@@ -242,7 +284,53 @@ uses the mouse pointer. Here is the code for the Player, using ``move_and_slide(
.. code-tab:: csharp
Coming soon
using Godot;
using System;
public class KBExample : KinematicBody2D
{
private PackedScene _bullet = (PackedScene)GD.Load("res://Bullet.tscn");
public int Speed = 200;
private Vector2 _velocity = new Vector2();
public void getInput()
{
// add these actions in Project Settings -> Input Map
_velocity = new Vector2();
if (Input.IsActionPressed("backward"))
{
_velocity = new Vector2(-speed/3, 0).Rotated(Rotation);
}
if (Input.IsActionPressed("forward"))
{
_velocity = new Vector2(speed, 0).Rotated(Rotation);
}
if (Input.IsActionPressed("mouse_click"))
{
Shoot();
}
}
public void Shoot()
{
// "Muzzle" is a Position2D placed at the barrel of the gun
var b = (Bullet)_bullet.Instance();
b.Start(((Node2D)GetNode("Muzzle")).GlobalPosition, Rotation);
GetParent().AddChild(b);
}
public override void _PhysicsProcess(float delta)
{
getInput();
var dir = GetGlobalMousePosition() - GlobalPosition;
// Don't move if too close to the mouse pointer
if (dir.Length() > 5)
{
Rotation = dir.Angle();
_velocity = MoveAndSlide(_velocity);
}
}
}
And the code for the Bullet:
@@ -272,7 +360,39 @@ And the code for the Bullet:
.. code-tab:: csharp
Coming soon
using Godot;
using System;
public class Bullet : KinematicBody2D
{
public int Speed = 750;
private Vector2 _velocity = new Vector2();
public void Start(Vector2 pos, float dir)
{
Rotation = dir;
Position = pos;
_velocity = new Vector2(speed, 0).Rotated(Rotation);
}
public override void _PhysicsProcess(float delta)
{
var collsion = MoveAndCollide(_velocity * delta);
if (collsion != null)
{
_velocity = _velocity.Bounce(collsion.Normal);
if (collsion.Collider.HasMethod("Hit"))
{
collsion.Collider.Hit();
}
}
}
public void OnVisibilityNotifier2DScreenExited()
{
QueueFree();
}
}
The action happens in ``_physics_process()``. After using ``move_and_collide()`` if a
@@ -337,7 +457,51 @@ Here's the code for the player body:
.. code-tab:: csharp
Coming soon
using Godot;
using System;
public class KBExample : KinematicBody2D
{
[Export] public int RunSpeed = 100;
[Export] public int JumpSpeed = -400;
[Export] public int Gravity = 1200;
Vector2 velocity = new Vector2();
bool jumping = false;
public void getInput()
{
velocity.x = 0;
bool right = Input.IsActionPressed("ui_right");
bool left = Input.IsActionPressed("ui_left");
bool jump = Input.IsActionPressed("ui_select");
if (jump && IsOnFloor())
{
jumping = true;
velocity.y = JumpSpeed;
}
if (right)
{
velocity.x += RunSpeed;
}
if (left)
{
velocity.x -= RunSpeed;
}
}
public override void _PhysicsProcess(float delta)
{
getInput();
velocity.y += Gravity * delta;
if (jumping && IsOnFloor())
{
jumping = false;
}
velocity = MoveAndSlide(velocity, new Vector2(0, -1));
}
}
.. image:: img/k2d_platform.gif