');
document.write('
');
document.write('
class ArgumentsInterpreterTest
extends GroovyTestCase
{');
document.write('
');
document.write('
def interpreter =
new ArgumentsInterpreter
()');
document.write('
');
document.write('
void testInterpretsArgumentWithoutValue
() {');
document.write(' interpreter
<< new ExpectedArgument
(shortcut:
\'-h\', argument:
\'printHelp\')');
document.write('
def arguments = interpreter.
interpret([\'-h\'])');
document.write(' assertNotNull
(arguments
[\'printHelp\'])');
document.write('
}');
document.write('
');
document.write('
void testInterpretsNoArguments
() {');
document.write('
def arguments = interpreter.
interpret([])');
document.write(' assertTrue
(arguments.
isEmpty())');
document.write('
}');
document.write('
');
document.write('
void testInterpretsArgumentWithValue
() {');
document.write(' interpreter
<< new ExpectedArgument
(shortcut:
\'-t\', argument:
\'tickInterval\', defaultValue:
1)');
document.write('
def arguments = interpreter.
interpret([\'-t\',
\'2\'])');
document.write(' assertEquals
(\'2\', arguments.
tickInterval)');
document.write('
}');
document.write('
');
document.write('
void testAcceptsArgumentWithoutDefaultValue
() {');
document.write(' interpreter
<< new ExpectedArgument
(shortcut:
\'-h\', argument:
\'printHelp\')');
document.write('
def arguments = interpreter.
interpret([])');
document.write(' assertNull
(arguments
[\'printHelp\'])');
document.write('
}');
document.write('
');
document.write('
void testAcceptsArgumentWithDefaultValue
() {');
document.write(' interpreter
<< new ExpectedArgument
(shortcut:
\'-t\', argument:
\'tickInterval\', defaultValue:
1)');
document.write('
def arguments = interpreter.
interpret([])');
document.write(' assertEquals
(\'1\', arguments.
tickInterval)');
document.write('
}');
document.write('
');
document.write('
void testInterpretsTwoArgumentsWithDefaultValues
() {');
document.write(' interpreter
<<');
document.write('
new ExpectedArgument
(shortcut:
\'-a\', argument:
\'b\', defaultValue:
1) <<');
document.write('
new ExpectedArgument
(shortcut:
\'-c\', argument:
\'d\', defaultValue:
2)');
document.write('
def arguments = interpreter.
interpret([\'-a\',
\'3\',
\'-c\',
\'4\'])');
document.write(' assertEquals
(\'3\', arguments.
b)');
document.write(' assertEquals
(\'4\', arguments.
d)');
document.write('
}');
document.write('
');
document.write('
void testInterpretsTwoArgumentsOneWithAndOneWithoutDefaultValue
() {');
document.write(' interpreter
<<');
document.write('
new ExpectedArgument
(shortcut:
\'-a\', argument:
\'b\') <<');
document.write('
new ExpectedArgument
(shortcut:
\'-c\', argument:
\'d\', defaultValue:
1)');
document.write('
def arguments = interpreter.
interpret([\'-a\',
\'-c\',
\'2\'])');
document.write(' assertNotNull
(arguments.
b)');
document.write(' assertEquals
(\'2\', arguments.
d)');
document.write('
}');
document.write('
');
document.write('
void testPrintsSummary
() {');
document.write(' interpreter
<<');
document.write('
new ExpectedArgument
(shortcut:
\'-d\', argument:
\'e\', defaultValue:
1, description:
\'f\') <<');
document.write('
new ExpectedArgument
(shortcut:
\'-a\', argument:
\'b\', description:
\'c\') <<');
document.write('
new ExpectedArgument
(shortcut:
\'-f\', argument:
\'long\', defaultValue:
2, description:
\'g\')');
document.write(' assertEquals
(\'-a c\n\' +
');
document.write('
\'-d <e> f;\n default value is 1\n\' +
');
document.write('
\'-f <long> g;\n default value is 2\n\', interpreter.
summary)');
document.write('
');
document.write('
}');
document.write('
}');
document.write('
');
document.write('
class ConwaysGameOfLifeTest
extends GroovyTestCase
{');
document.write('
');
document.write('
static def BLINKER_HORIZONTAL =
"[\' \', \'XXX\', \' \']"');
document.write('
static def BLINKER_VERTICAL =
"[\' X \', \' X \', \' X \']"');
document.write('
');
document.write('
void testBlinker
() {');
document.write('
def universe =
new ConwaysGameOfLife
().
createUniverse(new GroovyShell
().
evaluate(BLINKER_HORIZONTAL
))');
document.write(' assertEquals
(BLINKER_HORIZONTAL, universe.
toString())');
document.write(' assertEquals
(BLINKER_VERTICAL, universe.
next().
toString())');
document.write(' assertEquals
(BLINKER_HORIZONTAL, universe.
next().
toString())');
document.write('
}');
document.write('
');
document.write('
static def TOAD_FIRST_TICK =
"[\' \', \' XXX \', \' XXX \', \' \']"');
document.write('
static def TOAD_SECOND_TICK =
"[\' X \', \' X X \', \' X X \', \' X \']"');
document.write('
');
document.write('
void testToad
() {');
document.write('
def universe =
new ConwaysGameOfLife
().
createUniverse(new GroovyShell
().
evaluate(TOAD_FIRST_TICK
))');
document.write(' assertEquals
(TOAD_FIRST_TICK, universe.
toString())');
document.write(' assertEquals
(TOAD_SECOND_TICK, universe.
next().
toString())');
document.write(' assertEquals
(TOAD_FIRST_TICK, universe.
next().
toString())');
document.write('
}');
document.write('
}');
document.write('
');
document.write('
class RuleBuilderTest
extends GroovyTestCase
{');
document.write('
');
document.write('
void testBuildsRules
() {');
document.write('
def expectedFrom =
\'a\'');
document.write('
def expectedWithLivingNeighbours =
\'b\'');
document.write('
def expectedTo =
\'c\'');
document.write('
def ruler =
new RuleBuilder
().
rules {');
document.write(' rule
(from:expectedFrom, withLivingNeighbours:expectedWithLivingNeighbours, to:expectedTo
)');
document.write('
}');
document.write(' assertEquals
(1, ruler.
size())');
document.write('
def rule = ruler
[0]');
document.write(' assertEquals
(expectedFrom, rule.
from)');
document.write(' assertEquals
(expectedWithLivingNeighbours, rule.
withLivingNeighbours)');
document.write(' assertEquals
(expectedTo, rule.
to)');
document.write('
}');
document.write('
}');
document.write('
');
document.write('
import org.easymock.EasyMock');
document.write('
');
document.write('
class RulerTest
extends GroovyTestCase
{');
document.write('
');
document.write('
def ruler =
new Ruler
()');
document.write('
');
document.write('
void testAppliesRuleOnCell
() {');
document.write('
def ruleMock = EasyMock.
createMock(IRule.
class)');
document.write('
def cellDummy =
new Expando
()');
document.write('
');
document.write('
def universeExpando =
new Expando
()');
document.write(' universeExpando.
eachCellWithXY =
{ closure -> closure.
call(cellDummy,
0,
0) }');
document.write(' universeExpando.
switchToNextTick =
{ /*dummy behaviour */ }');
document.write('
');
document.write('
def expectedNumberRulesAppliedTo =
2');
document.write(' ruleMock.
applyTo(cellDummy
)');
document.write(' EasyMock.
expectLastCall().
times(expectedNumberRulesAppliedTo
)');
document.write(' EasyMock.
replay(ruleMock
)');
document.write('
');
document.write(' expectedNumberRulesAppliedTo.
times { ruler
<< ruleMock
}');
document.write(' ruler.
applyRulesTo(universeExpando
)');
document.write(' EasyMock.
verify(ruleMock
)');
document.write('
}');
document.write('
');
document.write('
void testSwitchesUniverseToNextTickAfterApplyingRules
() {');
document.write('
def universeMock = EasyMock.
createMock(IUniverse.
class)');
document.write(' universeMock.
switchToNextTick()');
document.write(' EasyMock.
replay(universeMock
)');
document.write('
');
document.write(' ruler.
applyRulesTo(universeMock
)');
document.write(' EasyMock.
verify(universeMock
) ');
document.write('
}');
document.write('
}');
document.write('
');
document.write('
class RuleTest
extends GroovyTestCase
{');
document.write('
');
document.write('
static def LIVE_CELL =
new Cell
(Cell.
LIVE)');
document.write('
');
document.write('
void testDoesntApplyItselfToCellWithDifferentStartStateThenRulesFromState
() {');
document.write('
def rule =
new Rule
(from:Cell.
LIVE)');
document.write('
def cell =
new Cell
(Cell.
DEAD)');
document.write(' rule.
applyTo(cell
)');
document.write(' assertNull cell.
nextState');
document.write('
}');
document.write('
');
document.write('
void testAppliesItselfToCellWithSameStartStateThenRulesFromState
() {');
document.write('
def rule =
new Rule
(from:Cell.
LIVE, to:Cell.
DEAD)');
document.write('
def cell =
new Cell
(Cell.
LIVE)');
document.write(' rule.
applyTo(cell
)');
document.write(' assertEquals
(Cell.
DEAD, cell.
nextState)');
document.write('
}');
document.write('
');
document.write('
void testDoesntApplyItselfToCellWithoutEnoughNeighbours
() {');
document.write('
def rule =
new Rule
(from:Cell.
LIVE, withLivingNeighbours:
1..
2, to:Cell.
DEAD)');
document.write('
def cell =
new Cell
(Cell.
LIVE)');
document.write(' rule.
applyTo(cell
)');
document.write(' assertNull cell.
nextState');
document.write(' cell.
neighbours =
[north:LIVE_CELL, west:LIVE_CELL, south:LIVE_CELL
]');
document.write(' rule.
applyTo(cell
)');
document.write(' assertNull cell.
nextState');
document.write('
}');
document.write('
');
document.write('
void testAppliesItselfToCellWithEnoughNeighbours
() {');
document.write('
def rule =
new Rule
(from:Cell.
LIVE, withLivingNeighbours:
1..
2, to:Cell.
DEAD) ');
document.write('
def cellWithOneNeighbour =
new Cell
(Cell.
LIVE)');
document.write(' cellWithOneNeighbour.
neighbours.
north = LIVE_CELL
');
document.write(' rule.
applyTo(cellWithOneNeighbour
)');
document.write(' assertEquals
(Cell.
DEAD, cellWithOneNeighbour.
nextState)');
document.write('
');
document.write('
def cellWithTwoNeighbours =
new Cell
(Cell.
LIVE)');
document.write(' cellWithTwoNeighbours.
neighbours.
south = LIVE_CELL
');
document.write(' cellWithTwoNeighbours.
neighbours.
north = LIVE_CELL
');
document.write(' rule.
applyTo(cellWithTwoNeighbours
)');
document.write(' assertEquals
(Cell.
DEAD, cellWithTwoNeighbours.
nextState)');
document.write('
}');
document.write('
');
document.write('
void testDoesntApplyAnyRuleOnAlreadyChangedState
() {');
document.write('
def rule =
new Rule
(from:Cell.
LIVE, to:Cell.
DEAD) ');
document.write('
def changedCell =
new Cell
(Cell.
LIVE)');
document.write(' changedCell.
nextState = Cell.
DEAD');
document.write('
}');
document.write('
}');
document.write('
');
document.write('
class UniverseTest
extends GroovyTestCase
{');
document.write('
');
document.write('
void testCreatesItselfByWidthAndHeightWithAllDeadCells
() {');
document.write('
def universe =
new Universe
(3,
3, Cell.
DEAD)');
document.write(' assertSame Cell.
DEAD, universe
[0][0].
state');
document.write(' assertSame Cell.
DEAD, universe
[2][2].
state');
document.write(' assertNull universe
[3][2]');
document.write(' assertNull universe
[2][3]');
document.write(' assertEquals
9, universe.
size()');
document.write('
}');
document.write('
');
document.write('
void testCreatesItselfByPatternWithAllDeadCells
() {');
document.write('
def universe =
new Universe
([\' \',
\' \'])');
document.write(' assertEquals
(new Universe
(3,
2, Cell.
DEAD), universe
)');
document.write(' assertEquals
(3, universe.
width)');
document.write(' assertEquals
(2, universe.
height)');
document.write('
}');
document.write('
');
document.write('
void testCreatesItselfByPatternWithLiveCellsInTheCornersAndInTheMiddle
() {');
document.write('
def universe =
new Universe
(3,
3, Cell.
DEAD)');
document.write(' universe
[0][0].
alive()');
document.write(' universe
[2][0].
alive()');
document.write(' universe
[1][1].
alive()');
document.write(' universe
[0][2].
alive()');
document.write(' universe
[2][2].
alive()');
document.write(' assertEquals
(universe,
new Universe
([\'X X\',
');
document.write('
\' X \',
');
document.write('
\'X X\']))');
document.write('
}');
document.write('
');
document.write('
void testCountsNeighboursByState
() {');
document.write('
def universe =
new Universe
(3,
3, Cell.
LIVE)');
document.write(' assertEquals
3, universe
[0][0].
countLiveNeighbours()');
document.write(' assertEquals
5, universe
[1][0].
countLiveNeighbours()');
document.write(' assertEquals
8, universe
[1][1].
countLiveNeighbours()');
document.write('
}');
document.write('
');
document.write('
void testIteratesOverEachCellWithxAndYCoords
() {');
document.write('
def universe =
new Universe
(2,
1, Cell.
LIVE)');
document.write('
def counter =
0;
');
document.write(' universe.
eachCellWithXY{ cell, x, y -> cell.
state = Cell.
DEAD; counter++
}');
document.write(' assertEquals
(2, counter
)');
document.write(' assertEquals
(Cell.
DEAD, universe
[0][0].
state)');
document.write(' assertEquals
(Cell.
DEAD, universe
[0][1].
state)');
document.write('
}');
document.write('
');
document.write('
void testSwitchesToNextTick
() {');
document.write('
def universe =
new Universe
(2,
1, Cell.
LIVE)');
document.write(' universe
[0][0].
nextState = Cell.
DEAD');
document.write(' universe.
switchToNextTick()');
document.write(' assertEquals
(Cell.
DEAD, universe
[0][0].
state)');
document.write(' assertEquals
(Cell.
LIVE, universe
[0][1].
state)');
document.write(' assertNull
(universe
[0][0].
nextState)');
document.write(' assertNull
(universe
[0][1].
nextState)');
document.write('
}');
document.write('
}');
document.write('
');
document.write('
class ArgumentsInterpreter
{');
document.write('
');
document.write('
def expectedArguments =
[:
]');
document.write('
');
document.write('
def interpret
(args
) {');
document.write('
def arguments = createDefaultArguments
()');
document.write(' args.
eachWithIndex{ arg, index ->
');
document.write('
if(arg
in expectedArguments.
keySet()) {');
document.write('
def expectedArgument = expectedArguments
[arg
]');
document.write('
if(!expectedArgument.
defaultValue) arguments
[expectedArgument.
argument] =
true');
document.write('
else arguments
[expectedArgument.
argument] = args
[index +
1]');
document.write('
}');
document.write('
}');
document.write('
return arguments
');
document.write('
}');
document.write('
');
document.write('
def leftShift
(expectedArgument
) {');
document.write(' expectedArguments
[expectedArgument.
shortcut] = expectedArgument
');
document.write('
this');
document.write('
}');
document.write('
');
document.write('
private createDefaultArguments
() {');
document.write('
def arguments =
[:
]');
document.write(' expectedArguments.
values().
each{ expectedArgument ->
');
document.write('
if(expectedArgument.
defaultValue)');
document.write(' arguments
[expectedArgument.
argument] = expectedArgument.
defaultValue as String');
document.write('
}');
document.write(' arguments
');
document.write('
}');
document.write('
');
document.write('
def getSummary
() {');
document.write('
def arguments = expectedArguments.
values()');
document.write(' arguments = arguments.
sort{ it.
shortcut }');
document.write('
def longestArgument = arguments.
findAll{ it.
defaultValue }.
argument.
sort{ it.
size() }[-1].
size()');
document.write('
def summary =
\'\'');
document.write(' arguments.
each{ argument ->
');
document.write(' summary
<<= argument.
shortcut');
document.write('
def argumentPart =
\' \'');
document.write('
if(argument.
defaultValue) {');
document.write(' argumentPart =
" <${argument.argument}> "');
document.write('
}');
document.write(' summary
<<= argumentPart.
padRight(longestArgument +
4,
\' \')');
document.write(' summary
<<= argument.
description');
document.write('
if(argument.
defaultValue) {');
document.write(' summary
<<=
\';\n\'');
document.write(' summary
<<=
\' \' *
(longestArgument +
6)');
document.write(' summary
<<=
"default value is ${argument.defaultValue}"');
document.write('
}');
document.write(' summary
<<=
\'\n\'');
document.write('
}');
document.write(' summary.
toString()');
document.write('
}');
document.write('
}');
document.write('
');
document.write('
class Cell
{');
document.write('
');
document.write('
static def DEAD = CellState.
DEAD');
document.write('
static def LIVE = CellState.
LIVE');
document.write('
');
document.write('
def state = DEAD
');
document.write('
def nextState
');
document.write('
');
document.write('
def neighbours =
[:
]');
document.write('
');
document.write(' Cell
(CellState state
) {');
document.write('
this.
state = state
');
document.write('
}');
document.write('
');
document.write(' Cell
(char statePattern
) {');
document.write(' state = CellState.
get(statePattern
)');
document.write('
}');
document.write('
');
document.write('
def countLiveNeighbours
() {');
document.write(' neighbours.
findAll{ entry -> LIVE == entry.
value?.
state}.
size()');
document.write('
}');
document.write('
');
document.write('
def alive
() { state = LIVE
}');
document.write('
');
document.write('
String toString
() {');
document.write(' state.
toString()');
document.write('
}');
document.write('
}');
document.write('
');
document.write('
class CellState
{');
document.write('
');
document.write('
static def LIVE =
new CellState
(state:
\'X\')');
document.write('
static def DEAD =
new CellState
(state:
\' \')');
document.write('
');
document.write('
private state
');
document.write('
');
document.write('
static def get(statePattern
) {');
document.write('
if(statePattern == LIVE.
state)');
document.write('
return LIVE
');
document.write(' DEAD
');
document.write('
}');
document.write('
');
document.write('
String toString
() { state
}');
document.write('
}');
document.write('
');
document.write('
class ConwaysGameOfLife
{');
document.write('
');
document.write('
private static def RULER =
new RuleBuilder
().
rules {');
document.write(' rule
(from:Cell.
LIVE, withLivingNeighbours:
0..
1, to:Cell.
DEAD)');
document.write(' rule
(from:Cell.
LIVE, withLivingNeighbours:
3..
9, to:Cell.
DEAD)');
document.write(' rule
(from:Cell.
LIVE, withLivingNeighbours:
2..
3, to:Cell.
LIVE)');
document.write(' rule
(from:Cell.
DEAD, withLivingNeighbours:
3, to:Cell.
LIVE)');
document.write('
}');
document.write('
');
document.write('
def universe
');
document.write('
');
document.write('
def createUniverse
(pattern
) {');
document.write(' universe =
new Universe
(pattern
)');
document.write('
this');
document.write('
}');
document.write('
');
document.write('
def next
() {');
document.write(' RULER.
applyRulesTo(universe
)');
document.write('
this');
document.write('
}');
document.write('
');
document.write('
def eachCellWithXY
(def closure
) { universe.
eachCellWithXY(closure
) }');
document.write('
def getHeight
() { universe.
height }');
document.write('
def getWidth
() { universe.
width }');
document.write('
');
document.write('
String toString
() { universe.
toString() }');
document.write('
}');
document.write('
');
document.write('
class ExpectedArgument
{');
document.write('
def shortcut
');
document.write('
def argument
');
document.write('
def defaultValue
');
document.write('
def description
');
document.write('
');
document.write('
String toString
() { shortcut
}');
document.write('
}');
document.write('
');
document.write('
interface IRule
{');
document.write('
');
document.write('
void applyTo
(cell
)');
document.write('
');
document.write('
}');
document.write('
');
document.write('
interface IUniverse
{');
document.write('
void switchToNextTick
()');
document.write('
}');
document.write('
');
document.write('
import groovy.swing.SwingBuilder');
document.write('
import javax.swing.JComponent');
document.write('
import java.awt.Color');
document.write('
import javax.swing.WindowConstants');
document.write('
');
document.write('
class Main
{');
document.write('
');
document.write('
static def TOAD =
"[\' \',\' XXX \',\' XXX \',\' \']"');
document.write('
static def BLINKER =
"[\' \',\'XXX\',\' \']"');
document.write('
static def GUN =
"[\' X \'," +
');
document.write('
"\' X X \'," +
');
document.write('
"\' XX XX XX\'," +
');
document.write('
"\' X X XX XX\'," +
');
document.write('
"\'XX X X XX \'," +
');
document.write('
"\'XX X X XX X X \'," +
');
document.write('
"\' X X X \'," +
');
document.write('
"\' X X \'," +
');
document.write('
"\' XX \'," +
');
document.write('
("\' \'," *
18) +
');
document.write('
"\' \']"');
document.write('
');
document.write('
static void main
(args
) {');
document.write('
def interpreter =
new ArgumentsInterpreter
() <<');
document.write('
new ExpectedArgument
(shortcut:
\'-h\', argument:
\'printHelp\',
');
document.write(' description:
\'prints this help text\') <<');
document.write('
new ExpectedArgument
(shortcut:
\'-t\', argument:
\'tickInterval\', defaultValue:
200,
');
document.write(' description:
\'sets the tick interval in milliseconds\') <<');
document.write('
new ExpectedArgument
(shortcut:
\'-p\', argument:
\'pattern\', defaultValue:TOAD,
');
document.write(' description:
\'sets the inital pattern (try TOAD, BLINKER or GUN)\') <<');
document.write('
new ExpectedArgument
(shortcut:
\'-b\', argument:
\'blockSize\', defaultValue:
10,
');
document.write(' description:
\'sets the length of a block in pixel\') <<');
document.write('
new ExpectedArgument
(shortcut:
\'-v\', argument:
\'view\', defaultValue:
\'swing\',
');
document.write(' description:
\'sets the view to <swing> or <console>\')');
document.write('
def arguments = interpreter.
interpret(args
)');
document.write('
if(arguments.
printHelp) {');
document.write(' printHelp
(interpreter
)');
document.write('
return');
document.write('
}');
document.write('
def pattern = calculatePattern
(arguments
)');
document.write('
def universe =
new ConwaysGameOfLife
().
createUniverse(pattern
)');
document.write('
def view =
new GroovyShell
(new Binding(Main:Main.
class)).
evaluate("Main.&${arguments.view}")');
document.write(' view
(universe, arguments
)');
document.write('
}');
document.write('
');
document.write('
static calculatePattern
(arguments
) {');
document.write('
if(arguments.
pattern[0] !=
\'[\') arguments.
pattern = Main.
"${arguments.pattern}"');
document.write('
return new GroovyShell
(new Binding(Main:Main.
class)).
evaluate(arguments.
pattern)');
document.write('
}');
document.write('
');
document.write('
');
document.write('
static void printHelp
(interpreter
) {');
document.write('
println \'Usage: java -jar conwaysgame.jar [arguments]\n\' + interpreter.
summary');
document.write('
}');
document.write('
');
document.write('
static void console
(universe, arguments
) {');
document.write('
while(true) {');
document.write('
println universe.
toString()[2..
-3].
split(\'\\', \\'\').
join(\'\n\')');
document.write(' universe = universe.
next()');
document.write('
Thread.
sleep(arguments.
tickInterval.
toInteger())');
document.write('
}');
document.write('
}');
document.write('
');
document.write('
static void swing
(universe, arguments
) {');
document.write('
def swing =
new SwingBuilder
()');
document.write('
def blockSize = arguments.
blockSize.
toInteger()');
document.write('
def size =
[universe.
width * blockSize, universe.
height * blockSize
]');
document.write('
def painterPanel =
new PainterPanel
(blockSize:blockSize, universe:universe,
');
document.write(' tickInterval:arguments.
tickInterval)');
document.write('
def frame = swing.
frame (title:
\'Conway\\'s Game of Life in Groovy\',
');
document.write('
size:
size, defaultCloseOperation:
WindowConstants.
EXIT_ON_CLOSE) {');
document.write(' widget
(painterPanel, minimumSize:
size, preferredSize:
size, maximumSize:
size)');
document.write('
}');
document.write(' frame.
pack()');
document.write(' frame.
show()');
document.write(' painterPanel.
run()');
document.write('
}');
document.write('
}');
document.write('
');
document.write('
class PainterPanel
extends JComponent {');
document.write('
');
document.write('
def blockSize
');
document.write('
def tickInterval
');
document.write('
def universe
');
document.write('
');
document.write('
void paintComponent
(java.
awt.
Graphics graphics
) {');
document.write(' universe.
eachCellWithXY{ cell, x, y ->
');
document.write('
if(Cell.
DEAD == cell.
state) graphics.
color =
Color.
WHITE');
document.write('
else graphics.
color =
Color.
BLACK');
document.write(' graphics.
fillRect(y * blockSize, x * blockSize, blockSize, blockSize
)');
document.write(' graphics.
color =
Color.
GRAY');
document.write(' graphics.
drawRect(y * blockSize, x * blockSize, blockSize, blockSize
)');
document.write('
}');
document.write('
}');
document.write('
');
document.write('
void run
() {');
document.write('
while(true) {');
document.write('
Thread.
sleep(tickInterval.
toInteger())');
document.write(' universe = universe.
next()');
document.write(' repaint
()');
document.write('
}');
document.write('
}');
document.write('
}');
document.write('
');
document.write('
class Rule
implements IRule
{');
document.write('
');
document.write('
def from
');
document.write('
def withLivingNeighbours =
0..
Integer.
MAX_VALUE');
document.write('
def to
');
document.write('
');
document.write('
void applyTo
(cell
) {');
document.write('
def fire = from == cell.
state && cell.
countLiveNeighbours() in withLivingNeighbours
');
document.write('
if(fire
) cell.
nextState = to
');
document.write('
}');
document.write('
');
document.write('
String toString
() { "Rule changes cells from <${from}> to <${to}> " +
');
document.write('
"if number of neighbours is within ${withLivingNeighbours}." }');
document.write('
}');
document.write('
');
document.write('
class RuleBuilder
extends BuilderSupport
{');
document.write('
');
document.write('
static def DEBUG =
false');
document.write('
def ruler
');
document.write('
');
document.write('
void setParent
(Object parent,
Object child
){}');
document.write('
');
document.write('
Object createNode
(Object name
){');
document.write(' ruler =
new Ruler
()');
document.write(' debug
\'createNode name\'');
document.write(' debug
"\t${name}"');
document.write(' ruler
');
document.write('
}');
document.write('
');
document.write('
Object createNode
(Object name,
Object value
){');
document.write(' debug
\'createNode name value\'');
document.write(' debug
"\t${name} ${value}"');
document.write('
this');
document.write('
}');
document.write('
');
document.write('
Object createNode
(Object name,
Map attributes
){');
document.write(' debug
\'createNode name attributes\'');
document.write(' debug
"\t${name} ${attributes}"');
document.write(' ruler
<< new Rule
(attributes
)');
document.write('
this');
document.write('
}');
document.write('
');
document.write('
Object createNode
(Object name,
Map attributes,
Object value
){');
document.write(' debug
\'createNode name attributes value\'');
document.write(' debug
"\t${name} ${attributes} ${value}"');
document.write('
this');
document.write('
}');
document.write('
');
document.write('
private void debug
(message
) {');
document.write('
if(DEBUG
) println message
');
document.write('
}');
document.write('
}');
document.write('
');
document.write('
class Ruler
{');
document.write('
');
document.write('
def rules =
[]');
document.write('
');
document.write('
def leftShift
(def rule
) {');
document.write(' rules
<< rule
');
document.write('
this');
document.write('
}');
document.write('
');
document.write('
def getAt
(def index
) {');
document.write(' rules
[index
]');
document.write('
}');
document.write('
');
document.write('
void applyRulesTo
(def universe
) {');
document.write(' rules.
each{ rule ->
');
document.write(' universe.
eachCellWithXY{ cell, x, y ->
');
document.write(' rule.
applyTo(cell
)');
document.write('
}');
document.write('
}');
document.write(' universe.
switchToNextTick()');
document.write('
}');
document.write('
');
document.write('
def size() { rules.
size() }');
document.write('
}');
document.write('
');
document.write('
class Universe
implements IUniverse
{');
document.write('
');
document.write('
private universe =
[:
] as TreeMap');
document.write('
');
document.write(' Universe
(width, height, state
) {');
document.write(' init
(width, height, state
)');
document.write(' linkNeighbours
()');
document.write('
}');
document.write('
');
document.write(' Universe
(pattern
) {');
document.write(' init
(pattern
[0].
size(), pattern.
size(), Cell.
DEAD)');
document.write(' pattern.
eachWithIndex{ row, x -> row.
eachWithIndex{ statePattern, y ->
');
document.write(' universe
[x
][y
] =
new Cell
(statePattern
as char)');
document.write('
} }');
document.write(' linkNeighbours
()');
document.write('
}');
document.write('
');
document.write('
private init
(width, height, state
) {');
document.write(' createCells
(width, height, state
)');
document.write('
}');
document.write('
');
document.write('
private createCells
(width, height, state
) {');
document.write(' height.
times{ x ->
');
document.write(' width.
times { y ->
');
document.write('
if(!universe
[x
]) universe
[x
] =
[:
] as TreeMap');
document.write(' universe
[x
][y
] =
new Cell
(state
)');
document.write('
} }');
document.write('
}');
document.write('
');
document.write('
private linkNeighbours
() {');
document.write(' eachCellWithXY
{ cell, x, y ->
');
document.write('
def neighbours = cell.
neighbours');
document.write(' neighbours.
east =
this[x +
1][y
]');
document.write(' neighbours.
southeast =
this[x +
1][y +
1]');
document.write(' neighbours.
south =
this[x
][y +
1]');
document.write(' neighbours.
west =
this[x -
1][y
]');
document.write(' neighbours.
southwest =
this[x -
1][y +
1]');
document.write(' neighbours.
north =
this[x
][y -
1]');
document.write(' neighbours.
northeast =
this[x -
1][y -
1]');
document.write(' neighbours.
northwest =
this[x +
1][y -
1]');
document.write('
}');
document.write('
}');
document.write('
');
document.write('
def getAt
(def key
) {');
document.write(' universe
[key
] ? universe
[key
] :
[:
]');
document.write('
}');
document.write('
');
document.write('
def size() {');
document.write(' universe.
size() * universe
[0].
size()');
document.write('
}');
document.write('
');
document.write('
String toString
() {');
document.write('
def rows = universe.
collect{ entry -> entry.
value.
values().
join(\'\') }');
document.write(' rows.
collect{ \'\\'\' + it +
\'\\'\'}.
toString()');
document.write('
}');
document.write('
');
document.write('
boolean equals
(def object
) {');
document.write(' toString
() == object.
toString()');
document.write('
}');
document.write('
');
document.write('
void eachCellWithXY
(def closure
) {');
document.write(' universe.
each{ x, row -> row.
each{ y, cell ->
');
document.write(' closure.
call(cell, x, y
) ');
document.write('
}}');
document.write('
}');
document.write('
');
document.write('
void switchToNextTick
() {');
document.write(' eachCellWithXY
{ cell, x, y ->
');
document.write('
if(cell.
nextState) cell.
state = cell.
nextState');
document.write(' cell.
nextState =
null');
document.write('
}');
document.write('
}');
document.write('
');
document.write('
def getHeight
() { universe.
size() }');
document.write('
');
document.write('
def getWidth
() { universe
[0].
size() }');
document.write('
}');
document.write('