Class: Quake::Wad::Reader

Inherits:
Object
  • Object
show all
Defined in:
lib/quake/wad/reader.rb

Overview

Reads WAD2 archives (Quake’s texture/picture format). Used primarily for gfx.wad which contains HUD graphics.

Defined Under Namespace

Classes: Entry, QPic

Constant Summary collapse

MAGIC = 
"WAD2"

Instance Method Summary collapse

Constructor Details

#initialize(data) ⇒ Reader

Returns a new instance of Reader.



15
16
17
18
19
 
# File 'lib/quake/wad/reader.rb', line 15

def initialize(data)
  @data = data
  @entries = {}
  parse_directory
end

Instance Method Details

#list ⇒ Object 



21
22
23
 
# File 'lib/quake/wad/reader.rb', line 21

def list
  @entries.keys
end

#read(name) ⇒ Object 



25
26
27
28
29
 
# File 'lib/quake/wad/reader.rb', line 25

def read(name)
  entry = @entries[name.downcase]
  return nil unless entry
  @data[entry.offset, entry.size]
end

#read_qpic(name) ⇒ Object

Read a QPic (status bar graphic): 4-byte width, 4-byte height, pixels



32
33
34
35
36
37
38
39
40
41
42
 
# File 'lib/quake/wad/reader.rb', line 32

def read_qpic(name)
  entry = @entries[name.downcase]
  return nil unless entry

  raw = @data[entry.offset, entry.size]
  return nil unless raw && raw.bytesize >= 8

  width, height = raw[0, 8].unpack("VV")
  pixels = raw[8, width * height]
  QPic.new(width: width, height: height, pixels: pixels)
end