I am having problems getting this code to work i have the
code below on frames 1 & 4 when i press the play button i get a
script error saying property not found V.locH =v0.locH + t* Ux *
speed * theta.cos which is in frame 4 can anyone help me to get
this working thanks for any help...

pj20

FRAME1

on exitFrame me

global Ux, Uy, V, t, v0

-- t is time interval

-- V is position vector

-- Ux is the component unit vector in the horizontal
direction

-- Uy is the component unit vector in the vertical direction

Ux = 1

Uy = 1

global bottom

sprite(1).trails = true

--

Global speed, theta, accel

-- these values give the speed of the particle and the angle
in radians

speed = 100

accel = 10

theta = (-45*pi)/180

-- 30 degees

V0 = sprite(1).loc

-- starting position vector

t = 0

end

FRAME 2

on exitFrame me

global Ux,Uy, speed, theta, V,t, top, bottom, left, right,
accel, v0

t = t+.05

-- horizontal

V.locH = v0.LocH + t*Ux*speed*theta.cos

-- vertical

V.locV = v0.LocV + t*Uy*speed*theta.sin + accel*power(t,2)

put V

-- draw

sprite(1).loc = V

-- re-enter frame

go the frame

end