Graal Forums - Concept Of A Rocket Launcher

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- - Concept Of A Rocket Launcher (https://forums.graalonline.com/forums/showthread.php?t=134264577)

Concept Of A Rocket Launcher

Here is just a base of what iv made, any suggestions are welcome.
Also if you know how to make the rotation correct by where the mouse is it would be appriciated.
i havnt done any gfx for it yet as i suck at gfx.

PHP Code:


		
			
//#CLIENTSIDE

function onCreated() {

  this.rocketfired = 0;

  onTimeout();

}



function onWeaponfired() {

  if (this.rocketfired == "1") {

    this.rx = mousex;

    this.ry = mousey;

    onTimeout();

  }

  this.rocketfired = 1;

}



function onTimeout() {

  if (this.rx < mousex) {

    this.rx++;

  }

  if (this.ry < mousey) {

    this.ry++;

  }

  if (this.rx > mousex) {

    this.rx--;

  }

  if (this.ry > mousey) {

    this.ry--;

  }

  if (this.rocketfired == "1") {

    showimg(1, "block.png", this.rx, this.ry);

    player.chat = "Rocket Moving!";

  }

  if (onwall(this.rx, this.ry)) {

    onExplodeRocket();

  }

  for (temp.pl: players) {

    if (this.rx in | pl.x, pl.x + 2.5 | && this.ry in | pl.y, pl.y + 3 | ) {

      onExplodeRocket();

    }

  }

  settimer(0.05);

}



function onExplodeRocket() {

  if (this.rocketfired == "1") {

    putexplosion(1, this.rx, this.ry);

    player.chat = "Rocket Exploded!";

    this.rocketfired = 0;

    hideimg(1);

  }

}

Determining the angle between two objects.

1. Calculate the Delta between the Origin and the Target
2. Use getangle to return the angle based on the Delta

Note: Delta = Final - Initial

PHP Code:


		
			
function getTargetAngle(origin, target) {

  // Calculate Delta X and Y

  temp.delta_x = target.x - origin.x;

  temp.delta_y = target.y - origin.y;

  // Return Angle Based on Delta

  return getangle(temp.delta_x, temp.delta_y);

}

The above will return the correct angle towards the target object.

If you want the Graal direction, you can just swap out getangle with getdir and it'll return a number in |0,3|.

Also:

PHP Code:


		
			
function onWeaponfired() { 

  if (this.rocketfired == "1") { 

    this.rx = mousex; 

    this.ry = mousey; 

    onTimeout(); 

  } 

  this.rocketfired = 1; 

}

Would require you to fire it twice to actually fire it, and even then you could fire it as much as you wanted to mess it up while the rocket is in motion. You want to do something like this:

PHP Code:


		
			
function onWeaponfired() { 

  if (this.rocketfired == 0) { 

    this.rx = mousex; 

    this.ry = mousey;

    this.rocketfired = 1; 

    onTimeout(); 

  }  

}

I would also suggest doing:

PHP Code:


		
			
function onTimeout() {

  // other code...

  if (this.rocketfired == 1) setTimer(0.05);

}

So your script only loops when it needs to.

Thanks for the feedback, il be sure to test out angles and such.
do you happen to know how to make the rotation of the image aim towards the mouse?

Set the image's rotation to the angle towards the mouse.

ahh i feel so stupid now, you told me how to do it and i was too blind to see it.