Specification for Screen-Input File:
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widthxheight,cavedelay,plantspeed,planttime,cavetime,diamondsneeded,diamondsvalue
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width          ... The width of the cave in cell-units
height         ... the height of the cave
cavedelay      ... delay of the cave  (0...6)
plantspeed     ... how fast does the plant grow (1..1000)
		   the lower the value the faster the growth
planttime      ... how long grows the plant (in seconds)
cavetime       ... how many seconds has the player to finish the cave
diamondsneeded ... the min. diamonds required to leave the cave
diamondsvalue  ... how much does a diamond score in this cave


The following objects are available for usage on the screen:

'   '   ... clear way
 +++    ... soil
 ===    ... walls
 ###    ... steel
 ~~~    ... magic wall
 ///    ... milling wall
 @@@    ... rocks
 $$$    ... diamonds
 !!!    ... monsters
 ***    ... butterflies
 nnn    ... plant
 P      ... Entry
 X      ... Exit




