Improves ASCII rasterization speed and simplifies API

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

apps/wolf_3d_cli/bin/main.dart

@@ -38,9 +38,9 @@ void main() async {
 
   final AsciiRasterizer asciiRasterizer = AsciiRasterizer(isTerminal: true);
   final SixelRasterizer sixelRasterizer = SixelRasterizer();
-  Rasterizer rasterizer = sixelRasterizer;
+  CliRasterizer rasterizer = sixelRasterizer;
 
-  FrameBuffer buffer = FrameBuffer(
+  final FrameBuffer initialFrameBuffer = FrameBuffer(
     stdout.terminalColumns,
     stdout.terminalLines,
   );
@@ -49,6 +49,7 @@ void main() async {
     data: availableGames.values.first,
     difficulty: Difficulty.medium,
     startingEpisode: 0,
+    frameBuffer: initialFrameBuffer,
     audio: CliSilentAudio(),
     input: CliInput(),
     onGameWon: () {
@@ -83,24 +84,17 @@ void main() async {
     if (stdout.hasTerminal) {
       int cols = stdout.terminalColumns;
       int rows = stdout.terminalLines;
-      if (!rasterizer.isTerminalSizeSupported(cols, rows)) {
+      if (!rasterizer.prepareTerminalFrame(engine, columns: cols, rows: rows)) {
         // Clear the screen and print the warning at the top left
         stdout.write('\x1b[2J\x1b[H');
-        stdout.write('\x1b[31m[ ERROR ] TERMINAL TOO SMALL\x1b[0m\n\n');
-        stdout.write('${rasterizer.terminalSizeRequirement}\n');
         stdout.write(
-          'Current size: \x1b[33m${stdout.terminalColumns}x${stdout.terminalLines}\x1b[0m\n\n',
+          rasterizer.buildTerminalSizeWarning(columns: cols, rows: rows),
         );
-        stdout.write('Please resize your window to resume the game...');
 
         // Prevent the engine from simulating a massive time jump when resumed
         lastTick = stopwatch.elapsed;
         return;
       }
-
-      if (buffer.width != cols || buffer.height != rows) {
-        buffer = FrameBuffer(cols, rows);
-      }
     }
 
     // 2. Normal Game Loop
@@ -112,8 +106,6 @@ void main() async {
     stdout.write('\x1b[H');
 
     engine.tick(elapsed);
-    rasterizer.render(engine, buffer);
-
-    stdout.write(rasterizer.finalizeFrame());
+    stdout.write(rasterizer.render(engine));
   });
 }