public override VGDLMovementTypes passiveMovement(VGDLSprite sprite)
{
if (sprite.isFirstTick)
{
sprite.isFirstTick = false;
return(VGDLMovementTypes.STILL);
}
//This needs to be thoroughly tested when continuous physics are added
//Specially the returned type.
if (sprite.speed != 0)
{
sprite.updatePos(sprite.orientation, (int)sprite.speed);
if (sprite.gravity > 0 && sprite.mass > 0 && !sprite.on_ground)
{
Vector2 gravityAction = new Vector2(0, sprite.gravity * sprite.mass);
activeMovement(sprite, gravityAction, 0);
}
sprite.speed *= (1 - sprite.friction);
return(VGDLMovementTypes.MOVE);
}
return(VGDLMovementTypes.STILL);
}
public override VGDLMovementTypes activeMovement(VGDLSprite sprite, Vector2 action, float speed = -1)
{
if (!sprite.stationary)
{
if (speed == 0)
{
if (sprite.speed <= 0)
{
speed = 1;
}
else
{
speed = sprite.speed;
}
}
if (speed != 0 && !action.Equals(Vector2.negativeInfinity) && !(action.Equals(Vector2.zero)))
{
if (sprite.rotateInPlace)
{
bool change = sprite.updateOrientation(action);
if (change)
{
return(VGDLMovementTypes.ROTATE);
}
}
if (sprite.updatePos(action, (int)(speed * gridSize.x)))
{
return(VGDLMovementTypes.MOVE);
}
}
}
return(VGDLMovementTypes.STILL);
}
public override VGDLMovementTypes passiveMovement(VGDLSprite sprite)
{
if (sprite.isFirstTick)
{
sprite.isFirstTick = false;
return(VGDLMovementTypes.STILL);
}
var speed = 1f;
if (sprite.speed != -1)
{
speed = sprite.speed;
}
if (speed != 0 && sprite.is_oriented)
{
if (sprite.updatePos(sprite.orientation, (int)(speed * gridSize.x)))
{
return(VGDLMovementTypes.MOVE);
}
}
return(VGDLMovementTypes.STILL);
}
public override void execute(VGDLSprite sprite1, VGDLSprite sprite2, VGDLGame game)
{
if (sprite1 == null || sprite2 == null)
{
throw new ArgumentException("Neither the 1st nor 2nd sprite can be EOS with PullWithIt interaction.");
}
//Keep in the list, for the current cycle, the sprites that have triggered this event.
var currentGameTime = game.getGameTick();
if (currentGameTime > lastGameTime)
{
spritesThisCycle.Clear();
lastGameTime = currentGameTime;
}
//the event gets triggered only once per time-step on each sprite.
if (spritesThisCycle.Contains(sprite1))
{
return;
}
spritesThisCycle.Add(sprite1);
//And go on.
var r = sprite1.lastrect;
var v = sprite2.lastDirection();
v.Normalize();
var gridsize = 1f;
if (sprite1.physicstype.CompareAndIgnoreCase(VGDLPhysics.GRID))
{
GridPhysics gp = (GridPhysics)(sprite1.physics);
gridsize = gp.gridSize.x;
}
else
{
ContinuousPhysics gp = (ContinuousPhysics)(sprite1.physics);
gridsize = gp.gridSize.x;
}
sprite1.updatePos(new Vector2(v.x, v.y), (int)(sprite2.speed * gridsize));
if (sprite1.physicstype.CompareAndIgnoreCase(VGDLPhysics.GRID))
{
sprite1.rect.y = sprite2.rect.y - sprite2.rect.height;
sprite1.orientation = new Vector2(sprite1.orientation.x, 0.0f);
}
sprite1.lastrect = new Rect(r);
if (pixelPerfect)
{
sprite1.rect = new Rect(sprite2.rect);
}
}