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Added construction interface for X axis acceleration.

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git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3324 542714f4-19e9-0310-aa3c-eee0fc999fb1
This commit is contained in:
Ted V
2005-02-01 20:22:09 +00:00
parent bf463e46e9
commit 6206d9f71b
1 changed files with 13 additions and 8 deletions
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src/java/com/threerings/media/animation/SparkAnimation.java
+13 -8
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@@ -1,5 +1,5 @@
//
// $Id: SparkAnimation.java,v 1.4 2004/08/27 02:12:38 mdb Exp $
// $Id$
//
// Narya library - tools for developing networked games
// Copyright (C) 2002-2004 Three Rings Design, Inc., All Rights Reserved
@@ -50,21 +50,23 @@ public class SparkAnimation extends Animation
* @param minyvel the minimum starting y-velocity of the sparks.
* @param xvel the maximum x-velocity of the sparks.
* @param yvel the maximum y-velocity of the sparks.
* @param g the gravitational acceleration, or 0 if none is desired.
* @param xacc the x axis acceleration, or 0 if none is desired.
* @param yacc the y axis acceleration, or 0 if none is desired.
* @param images the spark images to be animated.
* @param delay the duration of the animation in milliseconds.
*/
public SparkAnimation (Rectangle bounds, int x, int y, int jog,
float minxvel, float minyvel,
float xvel, float yvel,
float g, Mirage[] images, long delay)
float xacc, float yacc,
Mirage[] images, long delay)
{
super(bounds);
// save things off
_ox = x;
_oy = y;
_g = g;
_yacc = yacc;
_images = images;
_delay = delay;
@@ -91,7 +93,7 @@ public class SparkAnimation extends Animation
// acceleration, make the y-axis velocity negative; else,
// choose to move up or down at random.
_syvel[ii] = (Math.max(RandomUtil.getFloat(yvel), minyvel)) *
((g != 0) ? -1.0f : getDirectionMult());
((_yacc != 0) ? -1.0f : getDirectionMult());
}
_alpha = 1.0f;
@@ -134,7 +136,7 @@ public class SparkAnimation extends Animation
// determine the travel distance
int xtrav = (int)(_sxvel[ii] * msecs);
int ytrav = (int)
((_syvel[ii] * msecs) + (0.5f * _g * (msecs * msecs)));
((_syvel[ii] * msecs) + (0.5f * _yacc * (msecs * msecs)));
// update the position
_xpos[ii] = _ox + xtrav;
@@ -179,8 +181,11 @@ public class SparkAnimation extends Animation
/** The number of images we're animating. */
protected int _icount;
/** The gravitational acceleration in pixels per millisecond. */
protected float _g;
/** The x axis acceleration in pixels per millisecond. */
protected float _xacc;
/** The y axis acceleration in pixels per millisecond. */
protected float _yacc;
/** The starting x-axis velocity of each chunk. */
protected float[] _sxvel;