protected virtual void updateX(float step_time, cWorld world)
{
acceleration.X = force.X;
velocity.X += acceleration.X * step_time;
if (acceleration.X < 0.0f)
{
velocity.X = AppMath.Max <float>(velocity.X, -this.maxWalkSpeed);
}
else if (acceleration.X > 0.0f)
{
velocity.X = AppMath.Min <float>(velocity.X, this.maxWalkSpeed);
}
else
// if (isOnGround)
{
velocity.X = isOnGround ? velocity.X * Constants.GROUND_SLOW_DOWN_FACTOR
: velocity.X * Constants.AIR_SLOW_DOWN_FACTOR;
}
velocity.X = Math.Abs(velocity.X) <= 0.05f ? 0.0f : velocity.X;
float delta = velocity.X * step_time;
if (delta <= 0.0f)
{
float wallRightX;
if (hasLeftWall2(world, delta, out wallRightX))
{
position.X = wallRightX;
velocity.X = 0.0f;
}
else
{
position.X += delta;
}
}
else
{
float wallLeftX;
if (hasRightWall2(world, delta, out wallLeftX))
{
position.X = wallLeftX - Bounds.dims.X;
velocity.X = 0.0f;
}
else
{
position.X += delta;
}
}
}