Game Development Community

Tutorial Question (Player Movement)

by Bob · in Torque Game Builder · 03/02/2005 (4:38 pm) · 11 replies

Hi,
I am really new at Torque Script and I have a question.
I am following through the Tutorial and I am at the part where we start learning player movement.
I did everything the tutorial said but the player will not move.
Here is my code:

// --------------------------------------------------------------------
// Setup T2D Scene.
// --------------------------------------------------------------------
function setupT2DScene()
function playerUp()
{
// Set the player moving up.
$player.setLinearVelocityY( - );
}

function playerUpStop()
{
$player.setLinearVelocityY( 0 );
}

{


	// Create fxSceneGraph2D.
	new fxSceneGraph2D(t2dSceneGraph);
	
	// Associate Scenegraph with Window.
	sceneWindow2D.setSceneGraph( t2dSceneGraph );
	
	// Set Camera Position to be centered on (0,0) with
	// view width/height of (100/80).
	sceneWindow2D.setCurrentCameraPosition( "0 0 100 75" );

	
	// ************************************************************************
	//
datablock fxImageMapDatablock2D(playershipImageMap)
{
mode = full;
textureName = "~/client/images/playerShip";
};
$player = new fxStaticSprite2D() { scenegraph = t2dSceneGraph; };
$player.setPosition("-35, 0");
$player.setSize( "14, 7" );
$player.setImageMap( playershipImageMap ); 
     

                               
	// set up the enemy
	datablock fxImageMapDatablock2D(enemyship1ImageMap)
	{
mode = full;
textureName = "~/client/images/enemyship1";
 };
%enemy = new fxStaticSprite2D() { scenegraph = t2dSceneGraph; };
%enemy.setSize( "14, 7" ); 
%enemy.setPosition("40, 0"); 
%enemy.setImageMap( enemyship1ImageMap );
// move the enemy towards us. 
%enemy.setLinearVelocityX(-20);


// Create a new action map
new ActionMap(playerMap);


// Bind keys to actions
playerMap.bindCmd(keyboard, "w", "playerUp();", "playerUpStop();");
playerMap.bindCmd(keyboard, "s", "playerDown();", "playerDownStop();");
playerMap.bindCmd(keyboard, "a", "playerLeft();", "playerLeftStop();");
playerMap.bindCmd(keyboard, "d", "playerRight();", "playerRightStop();");
playerMap.bindCmd(keyboard, "space", "playerFire();", "");


// Activate the action map.
player.push();

Any help would be great!

Bob
NextNext Thread
PrevPrevious Thread
More from Torque Game Builder


Torque Owner Jason McIntosh
#1
03/02/2005 (4:39 pm)
I think if you get rid of the $ in the line:
$player.setLinearVelocityY( - );
it might work. That's like taking money away from velocity. Just doesn't work! :)

Torque Owner Bob
#2
03/02/2005 (4:43 pm)
Nope,
Didn't seem to work :(

Bob

Associate Anthony Rosenbaum
#3
03/02/2005 (4:47 pm)
This might be over kill but here is mine
$playerForce = 35;
// Start the player moving-up.
function playerUp()
{
	// Fetch the players horizontal velocity.
%horz_velocity = getWord( $MAV.getLinearVelocity(), 0 );

	$player.setLinearVelocity( %horz_velocity SPC -$playerForce );

}

// Stop the player moving-up.
function playerUpStop()
{
	// Fetch the players velocity.
	%velocity = $MAV.getLinearVelocity();

	// Extract the component velocities.
	%velX = getWord( %velocity, 0 );
		$player.setLinearVelocity( %velX SPC 0 );

}

Torque Owner Bob
#4
03/02/2005 (4:50 pm)
@Anthony

Right now I am trying to just follow the basic tutorial.
Thanks for your help though :)

Bob

Associate Anthony Rosenbaum
#5
03/02/2005 (4:53 pm)
Check the console for errors press ~

move the control functions OUT from the body of

function setupT2DScene()

like this 

function playerUp(){
// Set the player moving up.
$player.setLinearVelocityY( - );
}
function playerUpStop(){
$player.setLinearVelocityY( 0 );
}
function setupT2DScene(){

Torque Owner Bob
#6
03/02/2005 (5:02 pm)
Didn't see any errors.
It is still not working.
I'm on OS X if that is any help.

Bob

Torque Owner Matthew Hagerty
#7
03/02/2005 (5:08 pm)
Bob, you inserted you playerUpStop() function inside your setupT2DScene() function. You can't do that... This is from the code you posted:

// --------------------------------------------------------------------
// Setup T2D Scene.
// --------------------------------------------------------------------
function setupT2DScene()
function playerUp()
{
// Set the player moving up.
$player.setLinearVelocityY( - );
}

function playerUpStop()
{
$player.setLinearVelocityY( 0 );
}

{

You first problem comes in right there at the top where you put "function playerUp()" You can't define a function "inside" another function. All functions have this format:

function your_function_name_here()
{
    ... you code here ...
}

Take your playerUp() function and move it below the closing curley brace of the setupT2DScene() function. Should be something like this:

function setupT2DScene()
{
  ... existing code, and code you added as per the tutorial ...
}

// New functions added below.

// More player up
function playerUp()
{
  // Set the player moving up.
  $player.setLinearVelocityY( -10 );
}

// Stop moving player up.
function playerUpStop()
{
  $player.setLinearVelocityY( 0 );
}


If you don't understand what I'm saying, you'll probably need to grab a book on C or C++ and get more of the basics down. Your second problem is the "-$10". It is a typo and should be "-10".

Matthew

Torque Owner luggage
#8
03/02/2005 (6:12 pm)
I had the same problem as well but it was nothing to do with nippley brackets. The PDF says...

function playerUp()
{
// Set the player moving up.
$player.setLinearVelocityY( -[b]$[/b]10 );
}

and should be...

function playerUp()
{
// Set the player moving up.
$player.setLinearVelocityY( -10 );
}

Need to remove the $ in -$10.

Associate Melv May
#9
03/03/2005 (2:18 am)
@luggage: Yes, that's what Jason said in the 2nd post in this thread. :)

This has been corrected in the documentation and will be in the next update.

Sorry for the confusion this has caused.

- Melv.

Torque 3D Owner Matthew Langley
Torque
#10
03/03/2005 (7:33 am)
@Bob:


when you create a "function" you do this

function (put function name here)()
{

}


the "{" signify the beginning of defining that function and the "}" defines the end of the definition...

This tells the language what to use when you reference that function

an important thing to remember is a function should never be in another function


so 

function setupT2DScene()
function playerUp()
{
                    // Set the player moving up.$player.setLinearVelocityY( - );
}

so this automatically will not work

reason why is
"function setupT2DScene()" get started... then you have put "function playerUp()" in it...

you need to make sure you start setupT2DScene and end it first before you declare another function... so the format would rather be this

function setupT2DScene()
{

}

function playerUp()
{

}

that way they are defined as seperate functions

if you need any more help don't hesitate to ask

Torque Owner Bob
#11
03/03/2005 (7:52 am)
Ok,
This makes perfect sense.
Thank you all so much!!!!!!!

Bob