Comment cleanup

basicruntime.go

@@ -558,7 +558,7 @@ func (self *BasicRuntime) sdlEvents() error {
 		case *sdl.QuitEvent:
 			self.setMode(MODE_QUIT)
 		case *sdl.TextInputEvent:
-			// This is LAZY and WRONG but it works on US ASCII keyboards so I guess
+			// This is LAZY but it works on US ASCII keyboards so I guess
 			// international users go EFF themselves? It's how we did it in the old days...
 			ir = rune(t.Text[0])
 			if ( unicode.IsPrint(ir) ) {
@@ -576,21 +576,44 @@ func (self *BasicRuntime) sdlEvents() error {
 				self.advanceCursor(1, 0)
 			}
 		case *sdl.KeyboardEvent:
+			err = self.drawText(
+				(self.cursorX * int32(self.fontWidth)),
+				(self.cursorY * int32(self.fontHeight)),
+				" ",
+				true)
 			if ( t.Type == sdl.KEYUP ) {
 				//fmt.Printf("Key released: %s (Scancode: %d, Keycode: %d)\n", sdl.GetKeyName(t.Keysym.Sym), t.Keysym.Scancode, t.Keysym.Sym)
 				ir = self.runeForSDLScancode(t.Keysym)
 				//fmt.Printf("Rune: %c", ir)
-				if ( ir == sdl.K_BACKSPACE ) {
+				if ( ir == sdl.K_LEFT ) {
+					if ( self.userlineIndex == 0 ) {
+						return nil
+					}
+					err = self.drawText(
+						(self.cursorX * int32(self.fontWidth)),
+						(self.cursorY * int32(self.fontHeight)),
+						string(self.lineInProgress[self.userlineIndex]),
+						true)
+					self.userlineIndex -= 1
+					self.advanceCursor(-1, 0)
+				} else if ( ir == sdl.K_RIGHT ) {
+					if ( self.userlineIndex >= MAX_LINE_LENGTH ||
+						self.lineInProgress[self.userlineIndex] == 0 ) {
+						return nil
+					}
+					err = self.drawText(
+						(self.cursorX * int32(self.fontWidth)),
+						(self.cursorY * int32(self.fontHeight)),
+						string(self.lineInProgress[self.userlineIndex]),
+						true)
+					self.userlineIndex += 1
+					self.advanceCursor(+1, 0)
+				} else if ( ir == sdl.K_BACKSPACE ) {
 					if ( self.userlineIndex == 0 ) {
 						return nil
 					}
 					self.lineInProgress[self.userlineIndex-1] = 0
 					self.userlineIndex -= 1
-					err = self.drawText(
-						(self.cursorX * int32(self.fontWidth)),
-						(self.cursorY * int32(self.fontHeight)),
-						" ",
-						true)
 					if ( err != nil ) {
 						return err
 					}