Fixed pistol and knife sprites for retail. Added firing mechanism.

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

lib/features/renderer/weapon_painter.dart

@@ -0,0 +1,29 @@
+import 'package:flutter/material.dart';
+import 'package:wolf_dart/features/renderer/color_palette.dart';
+
+class WeaponPainter extends CustomPainter {
+  final List<List<int>> sprite;
+  WeaponPainter({required this.sprite});
+
+  @override
+  void paint(Canvas canvas, Size size) {
+    double pixelSize = size.width / 64;
+    final paint = Paint();
+    for (int x = 0; x < 64; x++) {
+      for (int y = 0; y < 64; y++) {
+        int colorByte = sprite[x][y];
+        if (colorByte != 255) {
+          // Transparency check
+          paint.color = ColorPalette.vga[colorByte];
+          canvas.drawRect(
+            Rect.fromLTWH(x * pixelSize, y * pixelSize, pixelSize, pixelSize),
+            paint,
+          );
+        }
+      }
+    }
+  }
+
+  @override
+  bool shouldRepaint(covariant WeaponPainter oldDelegate) => true;
+}