Problem keeping object in scope

by Jason Swearingen · in Torque Game Builder · 07/14/2005 (3:05 pm) · 11 replies · $player = new fxStaticSprite2D();

TorqueScript:
$player = new fxStaticSprite2D;
TorqueScript:
new fxStaticSprite2D(mySprite);
$player = mySprite;
C++:
//create new fxStaticSprite2D object
ConsoleObject *object = ConsoleObject::create("fxStaticSprite2D"); 

//cast to SimObject
SimObject * currentNewObject = dynamic_cast<SimObject *>(object);  

// ???  something the C++ engine always does
currentNewObject->setModStaticFields(true);  
currentNewObject->setModDynamicFields(true);   

// registers the newly created object with the T2D engine
currentNewObject->registerObject();   

//this code adds theobject to a SimGroup ... 
//??? not sure what this is for, but the c++ always does it
SimGroup *grp = NULL;  
Sim::findObject(RootGroupId, grp); 
grp->addObject(currentNewObject);

//create a new global variable
gEvalState.setCurVarNameCreate("$player");  

//set this globalvariable to point to the newly created fxStaticSprite2D object
gEvalState.setIntVariable(currentNewObject->getId());
C++:
intStack[UINT] = currentNewObject->getId();
new fxStaticSprite2D(mySprite);
$player = mySprite;
echo( $player.getId() );
echo( mySprite.getId() );
new fxStaticSprite2D(player);
$player = new fxStaticSprite2D;
fxStaticSprite2D* pPlayer = new fxStaticSprite2D();
pPlayer->registerObject();
new fxStaticSprite2D(mySprite);
$player = mySprite;
fxStaticSprite2D* pPlayer = new fxStaticSprite2D();
pPlayer->registerObject(mySprite);
pPlayer->unregisterObject();
delete pPlayer;
pPlayer->deleteObject();
//-----------------------------------------------------------------------------
// Torque 2D. 
// Copyright (C) GarageGames.com, Inc.
//-----------------------------------------------------------------------------

// --------------------------------------------------------------------
// Initialise Client.
// --------------------------------------------------------------------
function initialiseClient()
{

GlobalActionMap.bind(keyboard, tilde, ToggleConsole);
GlobalActionMap.bindCmd(keyboard, "alt enter", "", "toggleFullScreen();");

	// Initialise Canvas.
InitCanvas("T2D");

	// ************************************************************************
	// Load-up Demo Datablocks.
	// NOTE:-	Remove this is you're not interested in running the demos
	//			or any or the default datablocks.
	// ************************************************************************
exec("./demoDatablocks.cs");

	// Load-up Datablocks.	
exec("./datablocks.cs");
	// Load-up GUIs.
exec("./mainScreenGui.gui");

	// Set GUI.
Canvas.setContent(mainScreenGui);
	// Set Cursor.
Canvas.setCursor(DefaultCursor);

   // Setup Scene.
	//execScript("SetupT2D","setupT2DScene();");
setupT2DScene();

}

// --------------------------------------------------------------------
// Destroy Client.
//
// Here we destroy the SceneGraph.
// --------------------------------------------------------------------
function destroyClient()
{
	// Destroy fxSceneGraph2D.
if ( isObject(t2dSceneGraph) )
t2dSceneGraph.delete();	
}

// --------------------------------------------------------------------
// Setup T2D Scene.
// --------------------------------------------------------------------
function setupT2DScene()
{
	// 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" );

	// ************************************************************************
	//
	// Add your custom code here...
	//
	// ************************************************************************

// Set up the images for the game
SetupImages();
// Set up the player's stuff
CreatePlayer();

// Set up the enemy
CreateEnemy();

//setup background
CreateTileMap();

}
function SetupImages()
{
	// Create an image for the player ship
datablock fxImageMapDatablock2D(playershipImageMap)
{
mode = full;
textureName = "~/client/images/playerShip";
};

	// Create an image for the player's missiles
datablock fxImageMapDatablock2D(playermissileImageMap)
{
mode = full;
textureName = "~/client/images/playerMissile";
};

	// Create an image for enemy ships
datablock fxImageMapDatablock2D(enemyship1ImageMap)
{
mode = full;
textureName = "~/client/images/enemyship1";
};
	// Create an image for the enemy's missiles
datablock fxImageMapDatablock2D(enemymissileImageMap)
{
mode = full;
textureName = "~/client/images/enemyMissile";
};

	// Create images for the tilemap
datablock fxImageMapDatablock2D(bgBlankSkyImageMap)
{
mode = full;
textureName = "~/client/images/bg_blank_sky";
};
datablock fxImageMapDatablock2D(bgCloud1ImageMap)
{
mode = full;
textureName = "~/client/images/bg_cloud_1";
};
datablock fxImageMapDatablock2D(bgCloud2ImageMap)
{
mode = full;
textureName = "~/client/images/bg_cloud_2";
};
datablock fxImageMapDatablock2D(bgCloud3aImageMap)
{
mode = full;
textureName = "~/client/images/bg_cloud_3a";
};
datablock fxImageMapDatablock2D(bgCloud3bImageMap)
{
mode = full;
textureName = "~/client/images/bg_cloud_3b";
};
}

function CreatePlayer()
{
	// Create the player's ship sprite
$player = new fxStaticSprite2D() { scenegraph = t2dSceneGraph; };
$player.setPosition("-35 0");
$player.setSize( "14 7" );
$player.setImageMap( playershipImageMap );

$player.setWorldLimit( clamp, "-49 -37 40 37" );

	//setup link point
$player.fireLinkPoint = $player.addLinkPoint( "0.45 0.2" );

attachThruster( $player, "-0.12 -0.33", 0 );  //TorqueScript defined function

	// 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.
playerMap.push();

	// Set player's collision info:
$player.setGroup( 1 );
$player.setLayer( 1 );
$player.setCollisionActive( true, true );
$player.setCollisionMaterial( standardMaterial );
$player.setCollisionPolyCustom( 4, "-1 0 -0.1 -0.6 0.98 0.15 -0.1 0.7" );
$player.setCollisionMasks( BIT(2), BIT(2) );
$player.setCollisionCallback( true );

}
function CreateEnemy()
{
	// Create an enemy ship
%enemy = new fxStaticSprite2D() { scenegraph = t2dSceneGraph; };
%enemy.setImageMap( enemyship1ImageMap );
%enemy.setSize( "14 7" );
%enemy.setPosition("40" SPC (-30 + (getRandom() * 60))); //WAS:  %enemy.setPosition("40 0");
	// Move the enemy towards us.
%enemy.setLinearVelocityX(-20);
%enemy.setWorldLimit( kill, "-60 -40 60 40" );

attachThruster( %enemy, "0.8 -0.12", 180 );
attachThruster( %enemy, "0.8 0.18", 180 );

	// Set enemy collision info
%enemy.setGroup( 2 );
%enemy.setLayer( 2 );
%enemy.setCollisionActive( true, true );
%enemy.setCollisionMaterial( standardMaterial );
%enemy.setCollisionPolyCustom( 5, "-0.9 0 0 -0.6 1 -0.3 1 0.3 0 0.5" );
%enemy.setCollisionMasks( BIT(1), BIT(1) );
%enemy.setCollisionCallback( true );

	// Create an enemy missile and fire it
%enemyFire = new fxStaticSprite2D() { scenegraph = t2dSceneGraph; };
%enemyFire.setPosition( %enemy.getPosition() );
%enemyFire.setSize( "3 1.5" );
%enemyFire.setImageMap( enemymissileImageMap );
%enemyFire.setLinearVelocityX( -35 );
%enemyFire.setWorldLimit( kill, "-60 -40 60 40" );

	// Set up collision info
%enemyFire.setGroup( 2 );
%enemyFire.setLayer( 2 );
%enemyFire.setCollisionActive( true, true );
%enemyFire.setCollisionMaterial( standardMaterial );
%enemyFire.setCollisionScale("0.9 0.5");
%enemyFire.setCollisionMasks( BIT(1), BIT(1) );
%enemyFire.setCollisionCallback( true );

schedule(2000, 0, "CreateEnemy"); //creates an enemy (since this is same function, will loop)
}
function playerFire()
{
	// Create player projectile.
%projectile = new fxStaticSprite2D() { scenegraph = t2dSceneGraph; };
%projectile.setPosition( $player.getLinkPoint($player.fireLinkPoint) ); //WAS:  %projectile.setPosition( $player.getPosition() );
%projectile.setSize( "3 1.5" );
%projectile.setImageMap( playermissileImageMap );
%projectile.setWorldLimit( kill, "-52 -40 52 40" );
%projectile.setLinearVelocityX( 35 );

	// Setup collision info
%projectile.setGroup( 1 );
%projectile.setLayer( 1 );
%projectile.setCollisionActive(true, true);
%projectile.setCollisionMaterial(projectileMaterial);
%projectile.setCollisionScale("0.9 0.5");
%projectile.setCollisionMasks( BIT(2), BIT(2));
%projectile.setCollisionCallback( true );
}

function playerUp()
{
// Set the player moving up.
$player.setLinearVelocityY( -10 );
}
function playerUpStop()
{
// If we're moving up then nullify any upward movement.
if ( $player.getLinearVelocityY() < 0 )
$player.setLinearVelocityY( 0 );
}

function playerDown()
{
// Set the player moving down.
$player.setLinearVelocityY( 10 );
}
function playerDownStop()
{
// If we're moving down then nullify any downward movement.
if ( $player.getLinearVelocityY() > 0 )
$player.setLinearVelocityY( 0 );
}
function playerLeft()
{
// Set the player moving left.
$player.setLinearVelocityX( -10 );
}
function playerLeftStop()
{
// If we're moving left then nullify any leftward movement.
if ( $player.getLinearVelocityX() < 0 )
$player.setLinearVelocityX( 0 );
}
function playerRight()
{
// Set the player moving right.
$player.setLinearVelocityX( 10 );
}
function playerRightStop()
{
// If we're moving right then nullify any rightward movement.
if ( $player.getLinearVelocityX() > 0 )
$player.setLinearVelocityX( 0 );
}

function KillPlayer()
{
$player.setVisible( false );
playerMap.pop();
schedule(2000, 0, "ResetPlayer");
}

function ResetPlayer()
{
$player.setPosition("-35 0");
$player.setVisible(true);
playerMap.push();
}

function fxSceneObject2D::onCollision( %srcObj, %dstObj, %srcRef, %dstRef, %time, %normal, %contactCount, %contacts )
{
	// Create an explosion for the collision that just occurred
createExplosion( %dstObj );
if (%srcObj == $player)
{
KillPlayer();
%dstObj.safeDelete();
}
else if (%dstObj == $player)
{
KillPlayer();
%srcObj.safeDelete();
}
else
{
%srcObj.safeDelete();
%dstObj.safeDelete();
}
}
function CreateTileMap()
{
	// Create tile-map.
%scrollerMap = new fxTileMap2D() { scenegraph = t2dSceneGraph; };
	// Load saved tile-map file.
%scrollerMap.loadTileMap("~/client/maps/scroller.map");
	// Load tile layer from tile-map
%skyLayer = %scrollerMap.getTileLayer( 0 );
	// Generate Scrolling Sky, re-size to fill the whole screen
%skyLayer.setPosition( "0 -10" );
%skyLayer.setTileSize( "25 25" );
%skyLayer.setWrap( true, true );
%skyLayer.setAutoPan( "10 0" );
}

function attachThruster(%mountObj, %mountPosition, %angle)
{
	// Create Player Thruster.
%thruster = new fxParticleEffect2D() { scenegraph = t2dSceneGraph; };
%thruster.loadEffect("~/client/effects/smallThruster.eff");
%thruster.mount( %mountObj, %mountPosition, 0, false );
%thruster.setRotation( %angle );
%thruster.playEffect();
}

function createExplosion( %object )
{
	// Ignore if object not around anymore.
if ( !isObject(%object) )
return;
	// Shockwave Explosion.
%explosion = new fxParticleEffect2D() { scenegraph = t2dSceneGraph; };
%explosion.loadEffect("t2d/client/effects/shockwave_burst.eff");
%explosion.setPosition( %object.getPosition() );
%explosion.setEffectLifeMode( kill, 0.1 );
%explosion.playEffect();
}
$player = new fxStaticSprite2D() { scenegraph = t2dSceneGraph; };
new fxStaticSprite2D(mySprite) { scenegraph = t2dSceneGraph; };
$player = mySprite;
if (%srcObj == $player)
{
	KillPlayer();
	%dstObj.safeDelete();
}
else if (%dstObj == $player)
{
	KillPlayer();
	%srcObj.safeDelete();
}
else
{
	%srcObj.safeDelete();
	%dstObj.safeDelete();
}
if (%srcObj.getId() == $player.getId())
{
	KillPlayer();
	%dstObj.safeDelete();
}

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