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aaronblohowiak
Joined: 23 Jan 2009
Posts: 63
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 Posted: Sun Aug 30, 2009 3:55 am Post subject: Converted Penelope's Javascript Joysticks to C# (c sharp) |
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Oy, this is such a PITA.. if I understood the compiler chain better, perhaps I'd be able to automate the conversion (a boy can dream, can't he?)
In the mean time, running the following search/replace in vim (what else?) in the following order got me about 85% of the way there:
%s/var \(.*\) : \(.*\) = \(.*\);/\2 \1 = \3;/g
%s/var \(.*\) : \(.*\);/\2 \1;/g
%s/function \(.*\)() : \(.*\)/public \2 \1()/g
%s/function \(.*\)/public void \1
%s/boolean/bool
i was too lazy to figure out how to add 'f' to the end of floats, and the above doesnt handle changing for( var blah : Blah in blah) to foreach(Blah blah in blah) though i might add more as I go along.
more of a PITA is getting around c#'s inability to set variables on member properties ( ie: foo.color.a becomes tmpclr = foo.color; tmpclr.a= 0.2f; foo.color = tmpclr); I decided to create class-specific private member variables to avoid dynamic variable allocation (so we dont have as much garbage to collect.)
I hereby license my changes under the WTFPL [link]http://sam.zoy.org/wtfpl/[/link]
Anyway, here she is:
| Code: |
using UnityEngine;
using System.Collections;
//////////////////////////////////////////////////////////////
// Joystick.js
// Penelope iPhone Tutorial
//
// Joystick creates a movable joystick (via GUITexture) that
// handles touch input, taps, and phases. Dead zones can control
// where the joystick input gets picked up and can be normalized.
//
// Optionally, you can enable the touchPad property from the editor
// to treat this Joystick as a TouchPad. A TouchPad allows the finger
// to touch down at any point and it tracks the movement relatively
// without moving the graphic
//////////////////////////////////////////////////////////////
// A simple class for bounding how far the GUITexture will move
// converted to CS by Aaron Blohowiak, Aug 2009
public class Boundary
{
public Vector2 min = Vector2.zero;
public Vector2 max = Vector2.zero;
}
public class Joystick : MonoBehaviour{
static private Joystick[] joysticks; // A static collection of all joysticks
static private bool enumeratedJoysticks=false;
static private float tapTimeDelta = 0.3f; // Time allowed between taps
public bool touchPad; // Is this a TouchPad?
public Rect touchZone;
public Vector2 deadZone = Vector2.zero; // Control when position is output
public bool normalize = false; // Normalize output after the dead-zone?
public Vector2 position; // [-1, 1] in x,y
public int tapCount; // Current tap count
private int lastFingerId = -1; // Finger last used for this joystick
private float tapTimeWindow; // How much time there is left for a tap to occur
private Vector2 fingerDownPos;
private float fingerDownTime;
private float firstDeltaTime = 0.5f;
private GUITexture gui; // Joystick graphic
private Rect defaultRect; // Default position / extents of the joystick graphic
private Boundary guiBoundary = new Boundary(); // Boundary for joystick graphic
private Vector2 guiTouchOffset; // Offset to apply to touch input
private Vector2 guiCenter; // Center of joystick
private Vector3 tmpv3;
private Rect tmprect;
private Color tmpclr;
public void Start()
{
// Cache this component at startup instead of looking up every frame
gui = (GUITexture) GetComponent( typeof(GUITexture) );
// Store the default rect for the gui, so we can snap back to it
defaultRect = gui.pixelInset;
if ( touchPad )
{
// If a texture has been assigned, then use the rect ferom the gui as our touchZone
if ( gui.texture )
touchZone = gui.pixelInset;
}
else
{
// This is an offset for touch input to match with the top left
// corner of the GUI
guiTouchOffset.x = defaultRect.width * 0.5f;
guiTouchOffset.y = defaultRect.height * 0.5f;
// Cache the center of the GUI, since it doesn't change
guiCenter.x = defaultRect.x + guiTouchOffset.x;
guiCenter.y = defaultRect.y + guiTouchOffset.y;
// Let's build the GUI boundary, so we can clamp joystick movement
guiBoundary.min.x = defaultRect.x - guiTouchOffset.x;
guiBoundary.max.x = defaultRect.x + guiTouchOffset.x;
guiBoundary.min.y = defaultRect.y - guiTouchOffset.y;
guiBoundary.max.y = defaultRect.y + guiTouchOffset.y;
}
}
public void Disable()
{
gameObject.active = false;
enumeratedJoysticks = false;
}
public void ResetJoystick()
{
// Release the finger control and set the joystick back to the default position
gui.pixelInset = defaultRect;
lastFingerId = -1;
position = Vector2.zero;
fingerDownPos = Vector2.zero;
if ( touchPad ){
tmpclr = gui.color;
tmpclr.a = 0.025f;
gui.color = tmpclr;
}
}
public bool IsFingerDown()
{
return (lastFingerId != -1);
}
public void LatchedFinger( int fingerId )
{
// If another joystick has latched this finger, then we must release it
if ( lastFingerId == fingerId )
ResetJoystick();
}
public void Update()
{
if ( !enumeratedJoysticks )
{
// Collect all joysticks in the game, so we can relay finger latching messages
joysticks = (Joystick[]) FindObjectsOfType( typeof(Joystick) );
enumeratedJoysticks = true;
}
int count = iPhoneInput.touchCount;
// Adjust the tap time window while it still available
if ( tapTimeWindow > 0 )
tapTimeWindow -= Time.deltaTime;
else
tapCount = 0;
if ( count == 0 )
ResetJoystick();
else
{
for(int i = 0;i < count; i++)
{
iPhoneTouch touch = iPhoneInput.GetTouch(i);
Vector2 guiTouchPos = touch.position - guiTouchOffset;
bool shouldLatchFinger = false;
if ( touchPad )
{
if ( touchZone.Contains( touch.position ) )
shouldLatchFinger = true;
}
else if ( gui.HitTest( touch.position ) )
{
shouldLatchFinger = true;
}
// Latch the finger if this is a new touch
if ( shouldLatchFinger && ( lastFingerId == -1 || lastFingerId != touch.fingerId ) )
{
if ( touchPad )
{
tmpclr = gui.color;
tmpclr.a = 0.15f;
gui.color = tmpclr;
lastFingerId = touch.fingerId;
fingerDownPos = touch.position;
fingerDownTime = Time.time;
}
lastFingerId = touch.fingerId;
// Accumulate taps if it is within the time window
if ( tapTimeWindow > 0 )
tapCount++;
else
{
tapCount = 1;
tapTimeWindow = tapTimeDelta;
}
// Tell other joysticks we've latched this finger
foreach ( Joystick j in joysticks )
{
if ( j != this )
j.LatchedFinger( touch.fingerId );
}
}
if ( lastFingerId == touch.fingerId )
{
// Override the tap count with what the iPhone SDK reports if it is greater
// This is a workaround, since the iPhone SDK does not currently track taps
// for multiple touches
if ( touch.tapCount > tapCount )
tapCount = touch.tapCount;
if ( touchPad )
{
// For a touchpad, let's just set the position directly based on distance from initial touchdown
position.x = Mathf.Clamp( ( touch.position.x - fingerDownPos.x ) / ( touchZone.width / 2 ), -1, 1 );
position.y = Mathf.Clamp( ( touch.position.y - fingerDownPos.y ) / ( touchZone.height / 2 ), -1, 1 );
}
else
{
// Change the location of the joystick graphic to match where the touch is
tmprect = gui.pixelInset;
tmprect.x = Mathf.Clamp( guiTouchPos.x, guiBoundary.min.x, guiBoundary.max.x );
tmprect.y = Mathf.Clamp( guiTouchPos.y, guiBoundary.min.y, guiBoundary.max.y );
gui.pixelInset = tmprect;
}
if ( touch.phase == iPhoneTouchPhase.Ended || touch.phase == iPhoneTouchPhase.Canceled )
ResetJoystick();
}
}
}
if ( !touchPad )
{
// Get a value between -1 and 1 based on the joystick graphic location
position.x = ( gui.pixelInset.x + guiTouchOffset.x - guiCenter.x ) / guiTouchOffset.x;
position.y = ( gui.pixelInset.y + guiTouchOffset.y - guiCenter.y ) / guiTouchOffset.y;
}
// Adjust for dead zone
float absoluteX = Mathf.Abs( position.x );
float absoluteY = Mathf.Abs( position.y );
if ( absoluteX < deadZone.x )
{
// Report the joystick as being at the center if it is within the dead zone
position.x = 0;
}
else if ( normalize )
{
// Rescale the output after taking the dead zone into account
position.x = Mathf.Sign( position.x ) * ( absoluteX - deadZone.x ) / ( 1 - deadZone.x );
}
if ( absoluteY < deadZone.y )
{
// Report the joystick as being at the center if it is within the dead zone
position.y = 0;
}
else if ( normalize )
{
// Rescale the output after taking the dead zone into account
position.y = Mathf.Sign( position.y ) * ( absoluteY - deadZone.y ) / ( 1 - deadZone.y );
}
}
}
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My Unity3d iPhone Development Blog |
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TriplePAF
Joined: 19 Aug 2009
Posts: 89
Location: Amsterdam
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| Posted: Mon Aug 31, 2009 7:44 pm Post subject: |
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HaHa  I will look with all my eyeballs into this great Joystick.js to C# conversion topic.
Peter.  |
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grobm
Joined: 15 Aug 2005
Posts: 159
Location: Middletown NY
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| Posted: Thu Sep 17, 2009 6:24 pm Post subject: Joystick buttons? |
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I am trying to use the code to create a joystick button, currently I am not able to use the GUI buttons since the Joystick overrides the update.
Suggestions?
Thanks in advance,
-Mark
_________________
-Mark Grob
www.vrshell.com |
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aaronblohowiak
Joined: 23 Jan 2009
Posts: 63
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| Posted: Thu Sep 17, 2009 9:10 pm Post subject: |
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Grobm: I'm not sure what you mean, can you provide an example?
_________________
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pro/adv
My Unity3d iPhone Development Blog |
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grobm
Joined: 15 Aug 2005
Posts: 159
Location: Middletown NY
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| Posted: Fri Sep 18, 2009 2:37 pm Post subject: |
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Found the solution to my issue, someone else was looking for the same thing yesterday.
http://forum.unity3d.com/viewtopic.php?t=32404
I was looking for a simple script solution that would work at the same time I was using the joystick script input on the iphone.
AKA while moving with input from the joystick script on the iphone, I could shoot a gun. Currently if you tried it with your the joystick script and a standard GUI layer Repeat button, it will not shoot until you remove the touch event.
function OnGui (){
if GUI.RepeatButton... {
...Fire gun message
}
...
This GUI button does not fire. :-)while using the joystick script.
Reference link above works by creating the same update method as joystick, but simply determine if touch is in GUITexture coord., if it is... fire.
Cheers,
_________________
-Mark Grob
www.vrshell.com |
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