History loading

state/cursor.go

@@ -1,57 +1,113 @@
 package state
 
 func (s *State) CursorCellUp() {
-	if s.cursor.Y >= 1 {
-		s.cursor.Y--
+	if s.cursorCellUp() {
 		s.history += "u"
 	}
 }
 
 func (s *State) CursorCellDown() {
-	if s.cursor.Y < s.size()-1 {
-		s.cursor.Y++
+	if s.cursorCellDown() {
 		s.history += "d"
 	}
 }
 
 func (s *State) CursorCellRight() {
-	if s.cursor.X < s.size()-1 {
-		s.cursor.X++
+	if s.cursorCellRight() {
 		s.history += "r"
 	}
 }
 
 func (s *State) CursorCellLeft() {
-	if s.cursor.X >= 1 {
-		s.cursor.X--
+	if s.cursorCellLeft() {
 		s.history += "l"
 	}
 }
 
 func (s *State) CursorSectionUp() {
-	if s.cursor.Y >= s.cellsPerSection {
-		s.cursor.Y -= s.cellsPerSection
+	if s.cursorSectionUp() {
 		s.history += "U"
 	}
 }
 
 func (s *State) CursorSectionDown() {
-	if s.cursor.Y < s.size()-s.cellsPerSection {
-		s.cursor.Y += s.cellsPerSection
+	if s.cursorSectionDown() {
 		s.history += "D"
 	}
 }
 
 func (s *State) CursorSectionRight() {
-	if s.cursor.X < s.size()-s.cellsPerSection {
-		s.cursor.X += s.cellsPerSection
+	if s.cursorSectionRight() {
 		s.history += "R"
 	}
 }
 
 func (s *State) CursorSectionLeft() {
-	if s.cursor.X >= s.cellsPerSection {
-		s.cursor.X -= s.cellsPerSection
+	if s.cursorSectionLeft() {
 		s.history += "L"
 	}
 }
+
+func (s *State) cursorCellUp() bool {
+	if s.cursor.Y >= 1 {
+		s.cursor.Y--
+		return true
+	}
+	return false
+}
+
+func (s *State) cursorCellDown() bool {
+	if s.cursor.Y < s.size()-1 {
+		s.cursor.Y++
+		return true
+	}
+	return false
+}
+
+func (s *State) cursorCellRight() bool {
+	if s.cursor.X < s.size()-1 {
+		s.cursor.X++
+		return true
+	}
+	return false
+}
+
+func (s *State) cursorCellLeft() bool {
+	if s.cursor.X >= 1 {
+		s.cursor.X--
+		return true
+	}
+	return false
+}
+
+func (s *State) cursorSectionUp() bool {
+	if s.cursor.Y >= s.cellsPerSection {
+		s.cursor.Y -= s.cellsPerSection
+		return true
+	}
+	return false
+}
+
+func (s *State) cursorSectionDown() bool {
+	if s.cursor.Y < s.size()-s.cellsPerSection {
+		s.cursor.Y += s.cellsPerSection
+		return true
+	}
+	return false
+}
+
+func (s *State) cursorSectionRight() bool {
+	if s.cursor.X < s.size()-s.cellsPerSection {
+		s.cursor.X += s.cellsPerSection
+		return true
+	}
+	return false
+}
+
+func (s *State) cursorSectionLeft() bool {
+	if s.cursor.X >= s.cellsPerSection {
+		s.cursor.X -= s.cellsPerSection
+		return true
+	}
+	return false
+}

state/field.go

@@ -10,10 +10,14 @@ type field struct {
 
 // newField returns a field of cells, all unset.
 func newField(size int) *field {
-	return &field{
+	f := &field{
 		cells: make([]cell, size*size),
 		size:  size,
 	}
+	for i := 0; i < size*size; i++ {
+		f.cells[i].clear(false)
+	}
+	return f
 }
 
 // fieldFromBytes returns a field of cells  given a bytearray; it assumes that the bytearray is a square.

state/state.go

@@ -11,7 +11,7 @@ type Point struct {
 }
 
 func (p Point) String() string {
-	return fmt.Sprintf("%d,%d", p.X, p.Y)
+	return fmt.Sprintf("(%d,%d)", p.X, p.Y)
 }
 
 type State struct {
@@ -20,7 +20,8 @@ type State struct {
 	clears, score, factor int
 	blackout              []bool
 
-	history string
+	history      string
+	historyIndex int
 
 	sectionSize, cellsPerSection int
 	cells, sections              *field
@@ -34,7 +35,7 @@ func New(sectionSize, cellsPerSection int) *State {
 		sections:        newField(sectionSize),
 		cursor:          &Point{0, 0},
 	}
-	s.history = fmt.Sprintf("g%d,%d", sectionSize, cellsPerSection)
+	s.history = fmt.Sprintf("g(%d,%d)", sectionSize, cellsPerSection)
 	for x := 0; x < sectionSize; x++ {
 		for y := 0; y < sectionSize; y++ {
 			s.initSection(Point{x, y})
@@ -49,11 +50,6 @@ func (s *State) size() int {
 	return s.sectionSize * s.cellsPerSection
 }
 
-// History returns the gameplay history for replays
-func (s *State) History() string {
-	return s.history
-}
-
 func (s *State) String() string {
 	var buf bytes.Buffer
 	for x := 0; x < s.sectionSize*s.cellsPerSection; x++ {

state/state_test.go

@@ -1,7 +1,6 @@
 package state
 
 import (
-	"regexp"
 	"testing"
 
 	. "github.com/smartystreets/goconvey/convey"
@@ -49,24 +48,6 @@ func TestState(t *testing.T) {
 			})
 		})
 
-		Convey("You can maintain a history of all actions", func() {
-			s.Flag()
-			s.Mark()
-			s.Clear()
-			s.CursorSectionRight()
-			s.CursorSectionLeft()
-			s.CursorSectionDown()
-			s.CursorSectionUp()
-			s.CursorCellRight()
-			s.CursorCellLeft()
-			s.CursorCellDown()
-			s.CursorCellUp()
-
-			matches, err := regexp.Match(`g2,2(i\d,\d[xo]{4}){4}fmcRLDUrldu`, []byte(s.History()))
-			So(matches, ShouldBeTrue)
-			So(err, ShouldBeNil)
-		})
-
 		Convey("You can complete sections and clear portions of the board", func() {
 			s.cells.vivify(Point{0, 0})
 			s.cells.vivify(Point{2, 0})