Decompile the remaining Oceff actors + Add ichaindis.py (#125)

* Decompile the remaining Oceff actors + Add ichaindis.py

- z_oceff_spot.c: OK
- z_oceff_storm.c : 1 non-matching left
- Add ichaindis.py

* Rename SetActionFunc to SetupAction + Add Actor descriptions

* Minor fixes in PR #125

tools/ichaindis.py

@@ -0,0 +1,52 @@
+#!/usr/bin/python3
+
+import os
+import sys
+import struct
+import argparse
+
+ICHAIN_MACROS = [
+    'ICHAIN_U8',
+    'ICHAIN_S8',
+    'ICHAIN_U16',
+    'ICHAIN_S16',
+    'ICHAIN_U32',
+    'ICHAIN_S32',
+    'ICHAIN_F32',
+    'ICHAIN_F32_DIV1000',
+    'ICHAIN_VEC3F',
+    'ICHAIN_VEC3F_DIV1000',
+    'ICHAIN_VEC3S',
+]
+
+def main():
+    parser = argparse.ArgumentParser(description='Decompiles an InitChain')
+    parser.add_argument('filename', help='ROM file path')
+    parser.add_argument('offset', help='ROM offset to an InitChain')
+    args = parser.parse_args()
+    romOff = int(args.offset, 16)
+
+    try:
+        with open(args.filename, 'rb') as f:
+            romData = f.read()
+    except IOError:
+        print('failed to read file' + args.filename)
+        sys.exit(1)
+
+    print ('static InitChainEntry initChain[] = {')
+    while True:
+        entry = struct.unpack('>I', romData[romOff:romOff+4])[0]
+        romOff += 4
+
+        cont = entry >> 31
+        t = (entry >> 27) & 0xF
+        offset = ((entry) >> 16) & 0x7FF
+        value = (entry) & 0xFFFF
+
+        print('    {0}(unk_{1:X}, {2}, {3}),'.format(ICHAIN_MACROS[t], offset, value, ('ICHAIN_CONTINUE' if cont == 1 else 'ICHAIN_STOP')))
+        if cont == 0:
+            break
+    print ('};')
+
+if __name__ == "__main__":
+    main()