Class: Gruesome::Z::AbbreviationTable

Inherits:
Object
  • Object
show all
Defined in:
lib/gruesome/z/abbreviation_table.rb

Instance Method Summary collapse

Constructor Details

#initialize(memory) ⇒ AbbreviationTable

Returns a new instance of AbbreviationTable.



12
13
14
15
 
# File 'lib/gruesome/z/abbreviation_table.rb', line 12

def initialize(memory)
  @memory = memory
  @header = Header.new(@memory.contents)
end

Instance Method Details

#lookup(alphabet, index, translation_alphabet) ⇒ Object 



17
18
19
20
21
22
23
24
25
26
27
 
# File 'lib/gruesome/z/abbreviation_table.rb', line 17

def lookup(alphabet, index, translation_alphabet)
  abbrev_index = (32 * (alphabet)) + index
  addr = @header.abbrev_tbl_addr + abbrev_index*2

  # this will yield a word address, which we multiply by 2
  # to get into a byte address
  str_addr = @memory.force_readw(addr)
  str_addr *= 2

  ZSCII.translate(translation_alphabet, @header.version, @memory.force_readzstr(str_addr)[1], nil)
end