#!/usr/bin/env python3

import struct

def read(f):
    return struct.unpack('>h', f.read(2))[0]

def i2f(x):
    return round(x * 180 / 32767 * 200) / 200

def parse(f):
    print('AnimScript script = {')
    indent = '    '
    while True:
        op = read(f)
        if op == 0:
            print(f'{indent}AS_END,')
            break
        if op == 1:
            print(f'{indent}AS_WAIT, {read(f)},')
        elif op == 3:
            indent = indent[:-4]
            print(f'{indent}AS_END_LOOP,')
        elif op == 5:
            print(f'{indent}AS_SET_ROTATION, {read(f)}, AS_F({i2f(read(f))}), AS_F({i2f(read(f))}), AS_F({i2f(read(f))}),')
        elif op == 6:
            print(f'{indent}AS_ADD_ROTATION, {read(f)}, AS_F({i2f(read(f))}), AS_F({i2f(read(f))}), AS_F({i2f(read(f))}),')
        elif op == 8:
            print(f'{indent}AS_SET_POS, {read(f)}, {read(f)}, {read(f)}, {read(f)},')
        elif op == 10:
            print(f'{indent}AS_LOOP,')
            indent += '    '
        elif op == 14:
            print(f'{indent}AS_SET_FLAGS, {read(f)},')
        elif op == 15:
            print(f'{indent}AS_SET_NODE_FLAGS, {read(f)}, {read(f)},')
        elif op == 16:
            print(f'{indent}AS_CLEAR_NODE_FLAGS, {read(f)}, {read(f)},')
        elif op == 17:
            print(f'{indent}AS_SET_SCALE, {read(f)}, AS_F({i2f(read(f))}), AS_F({i2f(read(f))}), AS_F({i2f(read(f))}),')
        elif op == 18:
            print(f'{indent}AS_SET_RENDER_MODE, {read(f)},')
        elif op == 19:
            print(f'{indent}AS_OP_19,')
        else:
            raise Exception(str(f'Unknown opcode {op}'))
    print('};')


if __name__ == "__main__":
    import argparse
    parser = argparse.ArgumentParser()
    parser.add_argument("file", type=str, help="File to dissassemble from")
    parser.add_argument("offset", help="Offset to start dissassembling from")
    args = parser.parse_args()
    offset = int(args.offset, 16)
    with open(args.file, "rb") as f:
        f.seek(offset)
        parse(f)