Added some logic to the BoardLocation, Column, and Row classes

src/main/kotlin/com/anthonycicchetti/cs5004/assignment3/Board.kt

@@ -1,17 +1,87 @@
 package com.anthonycicchetti.cs5004.assignment3
 
 import com.anthonycicchetti.cs5004.assignment3.pieces.IChessPiece
+import java.lang.IllegalArgumentException
 
 class Board() {
     enum class Column {
-        A, B, C, D, E, F, G
+        A, B, C, D, E, F, G, H;
+
+        fun right(x: Int): Column? {
+            return when (this.ordinal + x) {
+                Column.A.ordinal -> return Column.A
+                Column.B.ordinal -> return Column.B
+                Column.C.ordinal -> return Column.C
+                Column.D.ordinal -> return Column.D
+                Column.E.ordinal -> return Column.E
+                Column.F.ordinal -> return Column.F
+                Column.G.ordinal -> return Column.G
+                Column.H.ordinal -> return Column.H
+                else -> null
+            }
+        }
+
+        fun left(x: Int): Column? {
+            return when (this.ordinal - x) {
+                Column.A.ordinal -> return Column.A
+                Column.B.ordinal -> return Column.B
+                Column.C.ordinal -> return Column.C
+                Column.D.ordinal -> return Column.D
+                Column.E.ordinal -> return Column.E
+                Column.F.ordinal -> return Column.F
+                Column.G.ordinal -> return Column.G
+                Column.H.ordinal -> return Column.H
+                else -> null
+            }
+        }
     }
 
     enum class Row {
-        ONE, TWO, THREE, FOUR, FIVE, SIX, SEVEN, EIGHT
+        ONE, TWO, THREE, FOUR, FIVE, SIX, SEVEN, EIGHT;
+
+        fun up(x: Int): Row? {
+            return when (this.ordinal + x) {
+                Row.ONE.ordinal -> return Row.ONE
+                Row.TWO.ordinal -> return Row.TWO
+                Row.THREE.ordinal -> return Row.THREE
+                Row.FOUR.ordinal -> return Row.FOUR
+                Row.FIVE.ordinal -> return Row.FIVE
+                Row.SIX.ordinal -> return Row.SIX
+                Row.SEVEN.ordinal -> return Row.SEVEN
+                Row.EIGHT.ordinal -> return Row.EIGHT
+                else -> null
+            }
+        }
+
+        fun down(x: Int): Row? {
+            return when (this.ordinal - x) {
+                Row.ONE.ordinal -> return Row.ONE
+                Row.TWO.ordinal -> return Row.TWO
+                Row.THREE.ordinal -> return Row.THREE
+                Row.FOUR.ordinal -> return Row.FOUR
+                Row.FIVE.ordinal -> return Row.FIVE
+                Row.SIX.ordinal -> return Row.SIX
+                Row.SEVEN.ordinal -> return Row.SEVEN
+                Row.EIGHT.ordinal -> return Row.EIGHT
+                else -> null
+            }
+        }
     }
+
     data class BoardSquare(val location: BoardLocation, var piece: IChessPiece?)
-    data class BoardLocation(val column: Column, val row: Row)
+    data class BoardLocation(val column: Column, val row: Row) {
+        fun move(columns: Int, rows: Int): BoardLocation {
+            val newColumn = when (val x = this.column.right(columns)) {
+                null -> throw IllegalArgumentException("Can't move to a bad column")
+                else -> x
+            }
+            val newRow = when (val x = this.row.up(rows)) {
+                null -> throw IllegalArgumentException("Can't move to a bad row")
+                else -> x
+            }
+            return BoardLocation(newColumn, newRow)
+        }
+    }
 
     val state: List<BoardSquare>