iPhone Flick shooting

Question

Hey

Im working with unity and iPhone, and I need to use a "flick" to shoot.

A "slow" (a flick = 1sec) should result in a slow shooting speed, and a "fast" flick (flick = 0.1 sec ?) should result in a fast shot.

What are the standards for a flick? 150pixel at the y-axis? cant seem to find any information.

for (var i = 0; i < iPhoneInput.touchCount; i++) {

     var touch = iPhoneInput.GetTouch(i); 

     if (touch.phase == iPhoneTouchPhase.Began) {
         cachedTime = Time.time;
         firstFinger = touch.position;

     } else if (touch.phase == iPhoneTouchPhase.Moved) {
         if (touch.position.y-firstFinger.y &gt; 150 ) {

             throwTime = (Time.time-cachedTime);
                         // Max (slowest) throwTime
             if (throwTime &gt; 0.75) {
                 throwTime = 0.75;   
             }

             Shoot(throwTime);
             break;  
         }
     } else if (touch.phase == iPhoneTouchPhase.Ended) {
         cachedTime = 0;                     
     }

}

I also tried with deltaPosition.y, but then I couldnt use a "slow" shot...

It seems to work OK (above), but im not satisfied. Could need some tips!

Thx

Answer 1

Here, try this script:

var mouseStart; var mouseEnd; private var GetVelocity = false; var DartVelocity; var FlickTime = 0; var flickLength = 0; var DartSpeed = 0; var worldAngle; var thrower = false; var rotate = false;

function Update () {
       if (Input.GetButtonDown ("Fire1")) {
        GetVelocity = true;   
        mouseStart = Input.mousePosition;
        }

     if (Input.GetButtonUp ("Fire1")) {
     GetVelocity = false;
     mouseEnd = Input.mousePosition;

     GetSpeed(); 
     GetAngle();

     Debug.Log ("The speed of your throw was " + DartSpeed);
     Debug.Log ("The angle of your throw was " + worldAngle);
     thrower = true;
     rotate = true;
     Dart.Update();
     }

     if (GetVelocity) {
         FlickTime++;
         }

function GetSpeed () {
    flickLength = (Screen.height - mouseStart.y) - (Screen.height - mouseEnd.y);
    if (FlickTime > 0) {
        DartVelocity = flickLength / FlickTime;
        }
    DartSpeed = DartVelocity / 10;
    DartSpeed = DartSpeed - (DartSpeed * 2);
}

function GetAngle () {
    worldAngle = camera.ScreenToWorldPoint 
        (Vector3 (mouseEnd.x, mouseEnd.y, (camera.nearClipPlane - 100)));
}

That's what you're trying to do. It uses Fire1 for the input, but you can change that to whatever you want. You can have a slow speed and a fast speed. It also calculates the angle for you and outputs it as worldAngle. DartSpeed is the speed of your projectile (I was using a dart). Hope this helps!

iPhone Flick shooting

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