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

SCUMM/Technical Reference/Object resources (view source)

Revision as of 11:32, 16 November 2021

4 bytes removed , 11:32, 16 November 2021

no edit summary

Edo999

35

edits

@@ Line 1: / Line 1: @@
-=== V6 Objects ===
+=== SCUMM V4 ===
+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.
+=== SCUMM V5 ===
+V5 objects are a lot like V6 Objects, with minor differences.
+===== IMHD =====
+<pre>
+  obj id       : 16le
+  num imnn     : 16le
+  num zpnn     : 16le (per IMnn block)
+  flags        : 8
+  unknown      : 8
+  x            : 16le
+  y            : 16le
+  width        : 16le
+  height       : 16le
+</pre>
+IMHD omits the hotspots.
+===== CDHD =====
+<pre>
+  obj id    : 16le
+  x         : 8
+  y         : 8
+  width     : 8
+  height    : 8
+  flags     : 8
+  parent    : 8
+  walk_x    : 16le signed
+  walk_y    : 16le signed
+  actor dir : 8 (direction the actor will look at when standing in front
+                 of the object)
+</pre>
+x, y, width, and height are bytes. Their values should be multiplied by 8 (the size of an image strip).
+=== SCUMM V6 ===
 In v6 objects are split in 2 chunks: OBIM and OBCD. OBIM store the images, zplanes, etc, while OBCD mostly store the scripts.
@@ Line 74: / Line 144: @@
 The OBNA chunk simply contain a null terminated string.
-=== V5 Objects ===
-V5 objects are a lot like V6 Objects, with minor differences.
-===== IMHD =====
-<pre>
-  obj id       : 16le
-  num imnn     : 16le
-  num zpnn     : 16le (per IMnn block)
-  flags        : 8
-  unknown      : 8
-  x            : 16le
-  y            : 16le
-  width        : 16le
-  height       : 16le
-</pre>
-IMHD omits the hotspots.
-===== CDHD =====
-<pre>
-  obj id    : 16le
-  x         : 8
-  y         : 8
-  width     : 8
-  height    : 8
-  flags     : 8
-  parent    : 8
-  walk_x    : 16le signed
-  walk_y    : 16le signed
-  actor dir : 8 (direction the actor will look at when standing in front
-                 of the object)
-</pre>
-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.