Initial commit

board/cell.go

@@ -0,0 +1,100 @@
+package board
+
+// ────────────────────────────────────────────────────────────────────────────── //
+// NOTES STRUCTURE                                                                //
+// ────────────────────────────────────────────────────────────────────────────── //
+
+type Notes struct {
+	numbers []int
+}
+
+func (n *Notes) Add(field *Field, cell *Cell, note int, trigger string, marks []Mark) {
+	for _, existing := range n.numbers {
+		if existing == note {
+			return // Note already exists
+		}
+	}
+	field.changes = append(field.changes, Change{
+		Cell:       cell,
+		marks:      marks,
+		action:     ActionSetNote,
+		value:      note,
+		from:       0,
+		triggerdBy: trigger,
+	})
+	n.numbers = append(n.numbers, note)
+}
+
+func (n *Notes) Remove(field *Field, cell *Cell, note int, trigger string, marks []Mark) {
+	for i, existing := range n.numbers {
+		if existing == note {
+			field.changes = append(field.changes, Change{
+				Cell:       cell,
+				marks:      marks,
+				action:     ActionRemoveNote,
+				value:      0,
+				from:       note,
+				triggerdBy: trigger,
+			})
+
+			n.numbers = append(n.numbers[:i], n.numbers[i+1:]...)
+			return
+		}
+	}
+}
+
+// ────────────────────────────────────────────────────────────────────────────── //
+// CELL STRUCTURE                                                                 //
+// ────────────────────────────────────────────────────────────────────────────── //
+
+type Cell struct {
+	number int
+	Notes  *Notes
+	Pos    *Position
+}
+
+func (c *Cell) SetNumber(field *Field, n int, trigger string, marks []Mark) {
+	if c.number == n {
+		return
+	}
+
+	if field == nil {
+		return
+	}
+
+	if n <= 0 || n > field.rows || n > field.columns {
+		return
+	}
+
+	field.changes = append(field.changes, Change{
+		Cell:       c,
+		marks:      marks,
+		action:     ActionSetNumber,
+		value:      n,
+		from:       c.number,
+		triggerdBy: trigger,
+	})
+
+	c.number = n
+}
+
+func (c *Cell) RemoveNumber(field *Field, trigger string, marks []Mark) {
+	if c.number == 0 {
+		return
+	}
+
+	if field == nil {
+		return
+	}
+
+	field.changes = append(field.changes, Change{
+		action:     ActionSetNumber,
+		Cell:       c,
+		value:      0,
+		from:       c.number,
+		marks:      marks,
+		triggerdBy: trigger,
+	})
+
+	c.number = 0
+}