# Get character's SCREEN position:

def vmatmul(v, m):
	return [v[0]*m[0][0] + v[1]*m[0][1] + v[2]*m[0][2] + m[0][3],
		v[0]*m[1][0] + v[1]*m[1][1] + v[2]*m[1][2] + m[1][3],
		v[0]*m[2][0] + v[1]*m[2][1] + v[2]*m[2][2] + m[2][3],
		v[0]*m[3][0] + v[1]*m[3][1] + v[2]*m[3][2] + m[3][3]]

#own = camera
invcam = own.getWorldToCamera()
projection = own.getProjectionMatrix()
charpos = char.getPosition()

obXinvcam = vmatmul(charpos,invcam)
charscreenpos = vmatmul(obXinvcam,projection)