Working on buffer stuff...

Trying to figure out how/if it fits...

buffer.go

@@ -27,7 +27,6 @@ import (
 )
 
 type Buffer struct {
-	// cells [][]Cell
 	cells      map[Coord]Cell
 	maxX, maxY int
 	minX, minY int
@@ -46,6 +45,22 @@ func (b *Buffer) Draw(x, y int, screen tcell.Screen) {
 	}
 }
 
+// MoveTo moves the minimum x and y of the buffer to x, y
+// All cell coordinates are updated accordingly
+func (b *Buffer) MoveTo(x, y int) {
+	diffX := b.minX - x
+	diffY := b.minY - y
+	cells := make(map[Coord]Cell)
+	for k, v := range b.cells {
+		cells[Coord{X: k.X - diffX, Y: k.Y - diffY}] = v
+	}
+}
+
+func (b *Buffer) Clear() {
+	b.cells = make(map[Coord]Cell)
+	b.maxX, b.maxY, b.minX, b.minY = 0, 0, 0, 0
+}
+
 func (b *Buffer) SetCell(x, y int, c Cell) {
 	b.cells[Coord{X: x, Y: y}] = c
 	b.maxX, b.maxY = h.Max(b.maxX, x), h.Max(b.maxY, y)
@@ -60,6 +75,13 @@ func (b *Buffer) SetCells(x, y int, c [][]Cell) {
 	}
 }
 
+func (b *Buffer) Merge(atX, atY int, b2 *Buffer) {
+	b2.MoveTo(atX, atY)
+	for k, v := range b2.cells {
+		b.cells[k] = v
+	}
+}
+
 // Buffer Helpers
 func (b *Buffer) FillText(x, y int, txt string, style tcell.Style) {
 	for i := range txt {