FAST CARGO
from Home Computing Weekly, 29th November 1983

Don't dawdle ... there's cargo to be shipped.

Can you steer a steady course? Type in Ron Ridge's program for either model
of the Spectrum and see if you are a suitable candidate for life aboard ship.


This is a fast moving game in which you have to move 12 pieces of cargo from
three different ports to a city dock. The 12 ships in the fleet start their
voyage from the city dock and are steered to berth at any of the three ports
with narrow entrances. When the cargo has been loaded the ship is steered
back to the city dock with an equally narrow entrance. Collision with the
quay results in either the loss of a ship or a ship and cargo depending on
whether you are sailing north or south. A fair level of skill is required and
the game is addictive.

Graphic notes: 70 caps shift 5; 120 caps shift 3,8, caps shift 6,6,8, caps
shift 3; 135 caps shift 6.


How it works
  10       GOSUB for instructions
  30-90    set up variables
 110-150   set up screen
 160-210   move ships south
 220-260   calculate final position of southbound ship and, if successful,
           load cargo
 280       missed dock - ship lost
 300-355   move ships north to city dock
 360-395   successful landing at city dock
 490       increase ships if landings successful
 500-510   confirm safe delivery of cargo
 520       end of game
 530       return for next voyage if any ships remaining
 540       option to replay or end
 570-630   print full instructions


Variables
SH        ships
K         cargo
N         movement north
S         movement south
A$,B$,C$  cargo at three ports (graphics)
A,B,C     number of cargo at each port


Hints on conversion
Because no user defined graphics are required (they can be added if desired)
the program is easily adapted to other computers and can be used as it
stands on the ZX81 with some substitutions for quay and cargo graphics.
