ParticleSystem:setLinearAcceleration
Available since LÖVE 0.9.0 It has replaced ParticleSystem:setGravity. Sets the linear acceleration (acceleration along the x and y axes) for particles.
Every particle created will accelerate along the x and y axes between xmin,ymin and xmax,ymax. Function Synopsis ParticleSystem:setLinearAcceleration( xmin, ymin, xmax, ymax ) Arguments number xmin The minimum acceleration along the x axis. number ymin The minimum acceleration along the y axis. number