Created
March 11, 2015 08:15
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BackGammon board mappings in JS
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/* | |
Red 0 == Black 25 | |
Red 1 == Black 24 == R1 | |
Black 1 == Red 24 == B1 | |
Red 12 == Black 13 == R12 | |
Black 12 == Red 13 == B12 | |
*/ | |
// map a color place to a bpard position | |
var x = function(pos, color) { | |
var mapped = undefined; | |
if(pos < 0) pos = 0; | |
if(pos > 25) pos = 25; | |
if (color == "Red") { | |
if (pos <= 12) { | |
mapped = "R" + pos; | |
} else { | |
mapped = "B" + (25 - pos) | |
} | |
} else if (color == "Black") { | |
if (pos <= 12) { | |
mapped = "B" + pos; | |
} else { | |
mapped = "R" + (25 - pos) | |
} | |
} | |
return mapped; | |
}; | |
// map a board position to a color place | |
var y = function(pos, color) { | |
var mapped = undefined; | |
var redPos = 0; | |
var split = [pos.slice(0,1), parseInt(pos.slice(1))]; | |
if (split[1] != NaN) { | |
if (split[0] == "R") { | |
redPos = split[1]; | |
} else if (split[0] == "B") { | |
redPos = 25 - split[1]; | |
} | |
mapped = redPos; | |
if (color == "Black") { | |
mapped = 25 - redPos; | |
} | |
} | |
return mapped; | |
}; | |
console.log(x(0, "Red")); | |
console.log(x(5, "Red")); | |
console.log(x(21, "Red")); | |
console.log(x(24, "Red")); | |
console.log(x(27, "Red")); | |
console.log(" "); | |
console.log(x(0, "Black")); | |
console.log(x(5, "Black")); | |
console.log(x(21, "Black")); | |
console.log(x(24, "Black")); | |
console.log(x(27, "Black")); | |
console.log(" "); | |
console.log(y("R4", "Black")); | |
console.log(y("R21", "Red")); | |
console.log(y("B4", "Red")); | |
console.log(y("B0", "Red")); |
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