1 files changed, 112 insertions, 0 deletions
diff --git a/internal/term/draw.go b/internal/term/draw.go
new file mode 100644
index 0000000..c6f297f
--- /dev/null
+++ b/internal/term/draw.go
@@ -0,0 +1,112 @@
+package term
+
+import (
+	"github.com/gdamore/tcell/v2"
+)
+
+type Style tcell.Style;
+
+var (
+	BgStyle Style
+	FgStyle Style
+)
+
+func init() {
+	BgStyle = Style(tcell.StyleDefault.Background(tcell.ColorReset).Foreground(tcell.ColorReset))
+	FgStyle = Style(tcell.StyleDefault.Foreground(tcell.ColorWhite).Background(tcell.ColorOlive))
+}
+
+func DrawSquare(scr *Screen, xOffset, yOffset, w, h int, style Style) {
+	for dx := 0; dx < w; dx++ {
+		x := xOffset + dx
+		for dy := 0; dy < h; dy++ {
+			y := yOffset + dy
+			scr.scr.SetContent(x, y, ' ', nil, tcell.Style(style))
+		}
+	}
+}
+
+func DrawNumber(scr *Screen, n, xOffset, yOffset, squareW, squareH int, style Style) {
+	defs := [...][15]bool{
+		{
+			true, true, true,
+			true, false, true,
+			true, false, true,
+			true, false, true,
+			true, true, true,
+		},
+		{
+			false, false, true,
+			false, false, true,
+			false, false, true,
+			false, false, true,
+			false, false, true,
+		},
+		{
+			true, true, true,
+			false, false, true,
+			true, true, true,
+			true, false, false,
+			true, true, true,
+		},
+		{
+			true, true, true,
+			false, false, true,
+			true, true, true,
+			false, false, true,
+			true, true, true,
+		},
+		{
+			true, false, true,
+			true, false, true,
+			true, true, true,
+			false, false, true,
+			false, false, true,
+		},
+		{
+			true, true, true,
+			true, false, false,
+			true, true, true,
+			false, false, true,
+			true, true, true,
+		},
+		{
+			true, true, true,
+			true, false, false,
+			true, true, true,
+			true, false, true,
+			true, true, true,
+		},
+		{
+			true, true, true,
+			false, false, true,
+			false, false, true,
+			false, false, true,
+			false, false, true,
+		},
+		{
+			true, true, true,
+			true, false, true,
+			true, true, true,
+			true, false, true,
+			true, true, true,
+		},
+		{
+			true, true, true,
+			true, false, true,
+			true, true, true,
+			false, false, true,
+			true, true, true,
+		},
+	}
+
+	squares := defs[n]
+	for i, draw := range squares {
+		if !draw {
+			continue
+		}
+		x := i % 3
+		y := i / 3
+		DrawSquare(scr, xOffset+squareW*x, yOffset+squareH*y, squareW, squareH, style)
+	}
+}