Difference between revisions of "SCUMM/Technical Reference/Object resources"

SCUMM/Technical Reference/Object resources (view source)

988 bytes added , 13:07, 23 February 2010

Add info on SCUMM v4 object code blocks

125

edits

@@ Line 111: / Line 111: @@
 x, y, width, and height are bytes. Their values should be multiplied by 8 (the size of an image strip).
+=== V4 Objects ===
+In v4 objects are split in 2 chunks: OI and OC. OC does not have any sub-blocks like v5 or v6 objects; it contains all header information and the SCUMM script.
+===== OC =====
+<pre>
+  obj id            : 16le
+  unknown           : 8
+  x                 : 8
+  y, parent state   : 8 (parent state is AND 0x80, y is AND 0x7F)
+  width             : 8
+  parent            : 8
+  walk_x            : 16le signed(?)
+  walk_y            : 16le signed(?)
+  height, actor dir : 8 (height is AND 0xF8, actor dir is AND 0x07)
+  name offset       : 8 (point to location of object name, from start of OC block)
+  verb table        : variable
+  object name       : variable, null-terminated string
+  SCUMM script      : variable
+</pre>
+The verb table is made up of multiple entries, each looks like this:
+<pre>
+  verb ID           : 8
+  offset            : 16le (from start of script?)
+</pre>
+The number of entries will vary depending on the interactions defined for the object.