Testing TUI implementation

z/tui.go

@@ -0,0 +1,67 @@
+package z
+
+import (
+  "fmt"
+)
+
+const(
+  TUI_ROWS = 200
+  TUI_COLS = 200
+)
+
+type TuiBuffer [TUI_ROWS][TUI_COLS]rune
+
+type Tui struct {
+  Buffer TuiBuffer
+}
+
+func (tui *Tui) Init() {
+  for row := 0; row < TUI_ROWS; row++ {
+    for col := 0; col < TUI_COLS; col++ {
+      tui.Buffer[row][col] = 0
+    }
+  }
+}
+
+func (tui *Tui) Merge(buffer TuiBuffer, x int, y int) (bool) {
+  inputRow := 0
+  inputCol := 0
+
+  for row := x; row < TUI_ROWS; row++ {
+    for col := y; col < TUI_COLS; col++ {
+      if buffer[inputRow][inputCol] != 0 {
+        tui.Buffer[row][col] = buffer[inputRow][inputCol]
+      }
+      inputCol++
+    }
+    inputRow++
+    inputCol = 0
+  }
+
+  return true
+}
+
+func (tui *Tui) Render(cols int, rows int) (string) {
+  var output string = ""
+  var emptyRow bool = true
+
+  for row := 0; row < rows; row++ {
+    for col := 0; col < cols; col++ {
+      var chr rune = ' '
+
+      if tui.Buffer[row][col] != 0 {
+        chr = tui.Buffer[row][col]
+        emptyRow = false
+      } else {
+        chr = ' '
+      }
+      output = fmt.Sprintf("%s%c", output, chr)
+    }
+    if emptyRow == false {
+      output = fmt.Sprintf("%s\n", output)
+      emptyRow = true
+    }
+  }
+
+  return output
+}