Sorted out the resource access problem on Tomcat.

resources/public/rulesets/basic.txt

@@ -0,0 +1 @@
+/home/simon/workspace/MicroWorld/mw-parser/resources/rules.txt

resources/public/rulesets/ecology.txt

@@ -0,0 +1,99 @@
+## Ruleset which attempts to model predator/prey ecology (not very well yet)
+
+## Vegetation rules
+;; rules which populate the world with plants
+
+;; Occasionally, passing birds plant tree seeds into grassland 
+
+if state is grassland then 1 chance in 10 state should be heath
+
+;; heath below the treeline grows gradually into forest, providing browsing pressure is not to high
+
+if state is heath and deer are fewer than 6 and altitude is less than 120 then state should be scrub 
+if state is scrub then 1 chance in 5 state should be forest
+
+;; Forest on fertile land at low altitude grows to climax
+
+if state is forest and fertility is more than 5 and altitude is less than 70 then state should be climax   
+    
+;; Climax forest occasionally catches fire (e.g. lightning strikes)
+
+if state is climax then 1 chance in 500 state should be fire
+
+;; Climax forest neighbouring fires is likely to catch fire
+if state is climax and some neighbours are fire then 1 chance in 3 state should be fire
+
+;; After fire we get waste
+
+if state is fire then state should be waste
+
+;; And after waste we get pioneer species; if there's a woodland seed
+;; source, it's going to be heath, otherwise grassland.
+
+if state is waste and some neighbours are scrub then state should be heath
+if state is waste and some neighbours are forest then state should be heath
+if state is waste and some neighbours are climax then state should be heath
+if state is waste then state should be grassland
+
+## Herbivore rules
+
+;; rules describing the impact of herbivores on the environment
+    
+;; if there are too many deer for the fertility of the area to sustain,
+;; some die or move on.
+;; if deer are more than fertility then deer should be fertility / 2
+
+;; deer arrive occasionally at the edge of the map.
+
+if x is 0 or y is 0 and deer are 0 then 1 chance in 50 deer should be 2 
+        
+;; deer gradually spread through the world by breeding or migrating.
+if fertility is more than 10 and deer is 0 and some neighbours have deer more than 2 then deer should be 2
+
+;; deer breed.
+
+if deer are more than 1 then deer should be deer * 2
+
+## Predator rules
+
+;; rules describing the impact of predator behaviour on the environment
+
+if deer are more than wolves then deer should be deer - wolves
+
+;; if there are not enough deer to sustain the population of wolves,
+;; some wolves die or move on.
+
+if wolves are more than deer then deer should be 0 and wolves should be deer + 0
+
+;; wolves arrive occasionally at the edge of the map.
+
+if x is 0 or y is 0 and wolves are 0 then 1 chance in 50 wolves should be 2 
+
+;; wolves gradually spread through the world by breeding or migrating.
+
+if state is not water and wolves is 0 and some neighbours have wolves more than 2 then 1 chance in 5 wolves should be 2
+
+;; wolves breed.
+
+if wolves are more than 1 then wolves should be wolves * 2
+
+## Potential blockers
+
+;; Forest increases soil fertility. 
+if state is in forest or climax then fertility should be fertility + 1
+
+
+## Initialisation rules
+
+;; Rules which deal with state 'new' will waste less time if they're near the
+;; end of the file
+
+;; below the waterline we have water.
+
+if state is new and altitude is less than 10 then state should be water
+
+;; above the snowline we have snow.
+if state is new and altitude is more than 200 then state should be snow
+
+;; otherwise, we have grassland.
+if state is new then state should be grassland

resources/public/rulesets/iceage.txt

@@ -0,0 +1,63 @@
+## Ruleset which attempts to model retreat of ice after an iceage
+
+;; Limitations: because the rule language doesn't (yet) allow sophisticated
+;; arithmetic, the ice retreats north to south (southern hemisphere).
+
+## Vegetation rules
+;; rules which populate the world with plants
+
+;; Occasionally, passing birds plant tree seeds into grassland 
+
+if state is grassland then 1 chance in 10 state should be heath
+
+;; heath below the treeline grows gradually into forest, providing browsing pressure is not to high
+
+if state is heath and fertility is more than 10 and altitude is less than 120 then state should be scrub 
+if state is scrub and fertility is more than 20 then 1 chance in 20 state should be forest
+
+;; Forest on fertile land grows to climax
+
+if state is forest and fertility is more than 30 and altitude is less than 70 then state should be climax   
+    
+;; Climax forest occasionally catches fire (e.g. lightning strikes)
+
+if state is climax then 1 chance in 500 state should be fire
+
+;; Climax forest neighbouring fires is likely to catch fire
+if state is climax and some neighbours are fire then 1 chance in 3 state should be fire
+
+;; After fire we get waste
+
+if state is fire then state should be waste
+
+;; And after waste we get pioneer species; if there's a woodland seed
+;; source, it's going to be heath, otherwise grassland.
+
+if state is waste and some neighbours are scrub then state should be heath
+if state is waste and some neighbours are forest then state should be heath
+if state is waste and some neighbours are climax then state should be heath
+if state is waste then state should be grassland
+
+## Potential blockers
+
+;; Woody plants increase soil fertility over time. 
+if state is in heath or scrub or forest or climax then fertility should be fertility + 1
+
+
+## Initialisation rules
+
+;; Rules which deal with state 'new' will waste less time if they're near the
+;; end of the file
+
+if state is new then state should be ice
+
+;; thaw moves gradually southwards (the distinction between 'ice' and 'snow' is
+;; just a hack because I can't do complex arithmetic in rules)
+;; below the waterline ice thaws to water.
+if state is ice and generation is more than y and altitude is less than 10 then state should be water
+;; otherwise it thaws to snow
+if state is ice and generation is more than y then state should be snow
+
+;; thaw moves gradually up the hills
+
+if state is snow and generation is more than altitude then state should be waste

resources/public/rulesets/life.txt

@@ -0,0 +1,33 @@
+# Conway's Game of Life is the classic cellular automaton.
+
+;; see http://en.wikipedia.org/wiki/Conway's_Game_of_Life
+
+;; This ruleset works with any strictly black and white map, but the maps which
+;; are designed to work with it have names starting 'life'.
+ 
+;; The universe of the Game of Life is an infinite two-dimensional orthogonal 
+;; grid of square cells, each of which is in one of two possible states, alive 
+;; or dead. Every cell interacts with its eight neighbours, which are the 
+;; cells that are horizontally, vertically, or diagonally adjacent. At each 
+;; step in time, the following transitions occur:
+
+;; Any live cell with fewer than two live neighbours dies, as if caused by 
+;; under-population.
+
+if state is black and fewer than 2 neighbours are black then state should be white
+
+;; Any live cell with two or three live neighbours lives on to the next generation.
+
+;; Any live cell with more than three live neighbours dies, as if by overcrowding.
+
+if state is black and more than 3 neighbours are black then state should be white
+
+;; Any dead cell with exactly three live neighbours becomes a live cell, as if by reproduction.
+
+if state is not black and 3 neighbours are black then state should be black
+
+# Initialisation rules
+
+if state is new and altitude is more than 127 then state should be black
+
+if state is new then state should be white

resources/public/rulesets/settlement.txt

@@ -0,0 +1,126 @@
+;; hack to speed up processing on the 'great britain and ireland' map
+if state is water then state should be water
+
+# Human settlement
+
+;; nomads make their first significant camp near water because of fish and
+;; shellfish (kitchen-midden people)
+if state is in grassland or heath and more than 3 neighbours are water and generation is more than 20 then state should be camp
+
+;; sooner or later nomads learn to keep flocks
+if state is in grassland or heath and some neighbours are camp then state should be pasture
+
+;; and more herds support more people
+if state is in grassland or heath and more than 2 neighbours are pasture then state should be camp
+if state is pasture and more than 3 neighbours are pasture and fewer than 1 neighbours are camp and fewer than 1 neighbours within 2 are house then state should be camp
+
+;; the idea of agriculture spreads
+if state is in grassland or heath and some neighbours are pasture and some neighbours within 3 are house then state should be pasture
+
+;; nomads move on
+if state is camp then 1 chance in 5 state should be waste
+
+;; pasture that's too far from a house or camp will be abandoned
+if state is pasture and fewer than 1 neighbours within 3 are house and fewer than 1 neighbours within 2 are camp then state should be heath
+
+;; markets spring up near settlements
+if state is in grassland or pasture and more than 1 neighbours are house then 1 chance in 10 state should be market
+
+;; good fertile pasture close to settlement will be ploughed for crops
+if state is pasture and fertility is more than 10 and altitude is less than 100 and some neighbours are camp or some neighbours are house then state should be ploughland
+
+if state is ploughland then state should be crop
+
+;; after the crop is harvested, the land is allowed to lie fallow
+if state is crop then state should be grassland
+
+;; if there's reliable food available, nomads build permanent settlements
+if state is in camp or abandoned and some neighbours are crop then state should be house
+if state is abandoned and some neighbours are pasture then state should be house
+;; people camp near to markets
+if state is in waste or grassland and some neighbours are market then state should be camp
+
+;; a market in a settlement survives
+if state is market and some neighbours are inn then state should be market
+if state is market then state should be grassland
+
+;; a house near a market in a settlement will become an inn
+if state is house and some neighbours are market and more than 1 neighbours are house then 1 chance in 5 state should be inn
+;; but it will need some local custom to survive
+if state is inn and fewer than 3 neighbours are house then state should be house
+
+;; if there aren't enough resources houses should be abandoned
+;; resources from fishing
+if state is house and more than 2 neighbours are water then state should be house
+;; from farming
+if state is house and some neighbours are pasture then state should be house
+if state is house and some neighbours are ploughland then state should be house
+if state is house and some neighbours are crop then state should be house
+;; from the market
+if state is house and some neighbours are market then state should be house
+if state is house then 1 chance in 2 state should be abandoned
+if state is abandoned then 1 chance in 5 state should be waste  
+
+
+## Vegetation rules
+;; rules which populate the world with plants
+
+;; Occasionally, passing birds plant tree seeds into grassland 
+
+if state is grassland then 1 chance in 10 state should be heath
+
+;; heath below the treeline grows gradually into forest
+
+if state is heath and altitude is less than 120 then state should be scrub 
+if state is scrub then 1 chance in 5 state should be forest
+
+;; Forest on fertile land grows to climax
+
+if state is forest and fertility is more than 5 and altitude is less than 70 then state should be climax   
+    
+;; Climax forest occasionally catches fire (e.g. lightning strikes)
+
+if state is climax then 1 chance in 500 state should be fire
+
+;; Climax forest neighbouring fires is likely to catch fire. So are buildings.
+if state is in climax or camp or house or inn and some neighbours are fire then 1 chance in 3 state should be fire
+
+;; Climax forest near to settlement may be cleared for timber
+if state is in climax and more than 3 neighbours within 2 are house then state should be scrub
+
+;; After fire we get waste
+
+if state is fire then state should be waste
+
+;; waste near settlement that is fertile becomes ploughland
+if state is waste and fertility is more than 10 and some neighbours are house or some neighbours are camp then state should be ploughland
+
+;; And after waste we get pioneer species; if there's a woodland seed
+;; source, it's going to be heath, otherwise grassland.
+
+if state is waste and some neighbours are scrub then state should be heath
+if state is waste and some neighbours are forest then state should be heath
+if state is waste and some neighbours are climax then state should be heath
+if state is waste then state should be grassland
+
+
+## Potential blockers
+
+;; Forest increases soil fertility. 
+if state is in forest or climax then fertility should be fertility + 1
+
+## Initialisation rules
+
+;; Rules which deal with state 'new' will waste less time if they're near the
+;; end of the file
+
+;; below the waterline we have water.
+
+if state is new and altitude is less than 10 then state should be water
+
+;; above the snowline we have snow.
+if state is new and altitude is more than 200 then state should be snow
+
+;; otherwise, we have grassland.
+if state is new then state should be grassland
+