Help me with this problem plz...

[tongxn]

Good morning, good afternoon and good evening.

i am developing a platform game, but I currently faced the problem of laser shots being fired in the direction of the mouse.

Is there any way of getting the mouse angle and duplicate the clip?

My laser mc is made by a tween inside movieclip. with the laser starting at CenterCrosshair of my blob, and ending 800 pixles to the top of the movie. with the AS (stop()

there are no GUN movieclips. the laser should be originated at the character alone (character is a blob).

so does anyone know how to duplicate MCs to mouse angles? and to get the mouse angle from the blob at least??

The blob will be moving.. so how does the mouse-angle detection work?

this is the AS i'm usin NOW for i can't seem to get the mouse angle. the laser is a MC with a tween of a laser shooting straight up... so -

onClipEvent (enterFrame) {
if (Key.isDown(Key.SPACE)) {
duplicateMovieClip("laser", laser1, 1);
_root.laser1._y = _root.hero._y;
_root.laser1._x = _root.hero._x;
}
if (_root.laser1.hitTest(ufo, true)) {
removeMovieClip(ufo);
}
}

mmm i exported laser..

what's wrong?

Regards
TONGXN

[dmonkey]

Hi,

Getting the mouse angle is actually quite simple. The geniuses over at Macromedia gave us a dead useful function called atan2(). It returns the angle of the mouse to whatever you want as long as you put the right things in. The syntax is:

code:

---

Math.atan2(difference in y , difference in x);

---

So in your case, the angle would be found by:

code:

---

angle = Math.atan2( (_root._ymouse - _root.hero._y) , (_root._xmouse - _root.hero._x) );

---

Flash likes to calculate angles in radians, but likes to rotate things using degrees, so you need to convert.

code:

---

angle = angle / Math.PI * 180;

---

You might also find you need to add or subtract 90 degrees, since Flash measures angles from the horizontal, not from the vertical.

Hope this has helped!

[cancerinform]

Never mind, i deleted what i wrote, too long at the computer.

[tongxn]

so - what about my code? I am a complete to much of an amature...

[dmonkey]

Hi,

In your code, you need to write the full path to "laser". DuplicateMovieClip doensn't load exported clips. If you want to do this, use attachMovie. However, if you do use attach movie, the movie will be attached to the clip you are writing the code on, so the path is not longer _root.laser1, it's this.laser1.

Secondly, "laser1" should be in double quotes.

Finally, you've written the hitTest wrong. Here's how it should all look.

code:

---

onClipEvent (enterFrame) {

	if (Key.isDown(Key.SPACE)) {

		attachMovie("laser", "laser1", 1);

		this.laser1._y = _root.hero._y;

		this.laser1._x = _root.hero._x;



		angle = Math.atan2( (_root._ymouse - _root.hero._y) , (_root._xmouse - _root.hero._x) );

		angle = angle / Math.PI * 180; //you might have to add or takeaway 90



		this.laser1._rotation = angle;

	}

	if (this.laser1.hitTest(ufo) == true) {

		removeMovieClip(ufo);

	}

}

---

Hope this helps.

[tongxn]

onClipEvent (enterFrame) {
if (Key.isDown(Key.SPACE)) {
attachMovie("laser","laser1",1);
this.laser1._y = _root.hero._y;
this.laser1._x = _root.hero._x;
angle = Math.atan2((_root._ymouse-_root.hero._y), (_root._xmouse-_root.hero._x));
angle = angle/Math.PI*180;
//you might have to add or takeaway 90
this.laser1._rotation = angle;
}
if (this.laser1.hitTest(ufo) == true) {
removeMovieClip(ufo);
}
}

nope not working, i think something's wrong.