Before changing BackSymbol to string.

deck.go

@@ -99,7 +99,6 @@ func MarkOf(c int) door.Panel {
 			door.Line{Text: " ",
 				DefaultColor: color,
 			})
-		// m = ' '
 	} else {
 		if door.Unicode {
 			p.Lines = append(p.Lines,
@@ -108,11 +107,7 @@ func MarkOf(c int) door.Panel {
 				})
 			// m = '\u25a0'
 		} else {
-			/*
-				var b [1]byte
-				b[0] = 0xfe
-				m = string(b[:]) // '\xfe'
-			*/
+			// Safely convert from byte to string
 			var b [1]byte
 			b[0] = 0xfe
 			p.Lines = append(p.Lines,
@@ -285,7 +280,7 @@ func CalcCardPos(pos int) Pos {
 // 0-29
 var CardPos []Pos
 
-var blocks [][]int
+var Blocks [][]int
 
 func init() {
 	CardPos = make([]Pos, 30)
@@ -293,7 +288,7 @@ func init() {
 		CardPos[x] = CalcCardPos(x)
 	}
 
-	blocks = [][]int{
+	Blocks = [][]int{
 		{3, 4},
 		{5, 6},
 		{7, 8}, // end row 1
@@ -318,17 +313,17 @@ func init() {
 // Which card(s) are unblocked by this card?
 func Unblocks(card int) []int {
 	var result []int
-	for idx := range blocks {
-		if blocks[idx][0] == card || blocks[idx][1] == card {
+	for idx := range Blocks {
+		if Blocks[idx][0] == card || Blocks[idx][1] == card {
 			result = append(result, idx)
 		}
 	}
 	return result
 }
 
-func CanPlay(card1 int, card2 int) bool {
-	rank1 := GetRank(card1)
-	rank2 := GetRank(card2)
+func CanPlay(card1 DeckType, card2 DeckType) bool {
+	rank1 := GetRank(int(card1))
+	rank2 := GetRank(int(card2))
 
 	if (rank1+1)%13 == rank2 {
 		return true

playcards.go

@@ -687,6 +687,39 @@ Next_Hand:
 							}
 						}
 					}
+
+				case ' ', '5':
+					if CanPlay(pc.Deck[pc.Select_card],
+						pc.Deck[pc.Play_card]) {
+						pc.Current_streak++
+
+						pc.Door.Write(pc.StreakPanel.Update())
+						pc.Score += 10
+
+						if pc.Current_streak > 1 {
+							pc.Score += pc.Current_streak * 5
+						}
+						pc.Door.Write(pc.ScorePanel.Update())
+
+						// Play card
+						pc.State[pc.Select_card] = 2
+
+						{
+							// Swap out the select card with the play card
+							temp := pc.Deck[pc.Select_card]
+							pc.Deck[pc.Select_card] = pc.Deck[pc.Play_card]
+							pc.Deck[pc.Play_card] = temp
+
+							// Select card is invalidated here.  Find new card.
+							check := Unblocks(pc.Select_card)
+							var left bool = false
+							var right bool = false
+
+							for _, c := range check {
+
+							}
+						}
+					}
 				}
 			}
 		}