Some tooling to extract assets

Run:
restool.py decode
to extract assets into assets/defs/*

Run:
restool.py compile
to compile the assets back into a rom

assets/projectile_decode.py

@@ -0,0 +1,59 @@
+from decode_common import *
+
+BANK = 0x93
+
+kProjInstructionSet = {
+  0x93822F: ('Delete', ''),
+  0x938239: ('Goto', 'G'),
+}
+
+kCommandByName = {v[0] : (k, v[1]) for k, v in kProjInstructionSet.items()}
+kCommandByName['Draw'] = (None, 'HABBH')
+
+kProjTerminator = { 0x938239, 0x93822F}
+
+class ProjParser(InstrParserCommon):
+  instruction_set = kProjInstructionSet
+  instruction_set_term = kProjTerminator
+  TAG = 'proj'
+
+  def __init__(self):
+    super().__init__()
+    self.sprite_maps = set()
+
+  def handle_draw_command(self, ins, ea):
+    drawp = get_word(ea + 2) | (BANK << 16)
+    self.sprite_maps.add(drawp)
+    self.print_line(ea, f'  Draw({ins}, {get_ea_name(drawp)}, {get_byte(ea + 4)}, {get_byte(ea + 5)}, {get_word(ea + 6)})') 
+    return 8
+
+  def process_queue_entry(self, ea):
+    assert ea & 0x8000
+    while True:
+      if ea in self.visited:
+        break
+      self.visited.add(ea)
+      ins = get_word(ea)
+      if ins & 0x8000:
+        ea_org = ea
+        ins = (BANK << 16) | ins
+        if ins not in self.instruction_set:
+          print(f'// Ins {ins:X} not in iset at {ea:X}')
+          return
+        name, operands = self.instruction_set[ins]
+        ea += 2
+        r = []
+        for op in operands:
+          if op == 'G':
+            addr = (BANK << 16) | get_word(ea)
+            r.append(get_ea_name(addr, short_label=True))
+            self.visit(addr)
+            ea += 2
+          else:
+            assert 0
+        self.print_line(ea_org, f'  {name}({", ".join(r)})') 
+        if ins in self.instruction_set_term:
+          self.print_line(ea_org + 1, '')
+          break
+      else:
+        ea += self.handle_draw_command(ins, ea)