PSDL - Revision history

Midas: /* Blocks */

2016-08-22T13:15:21Z

‎Blocks

Midas: /* Blocks */

2016-08-22T00:09:50Z

‎Blocks

Midas: /* Blocks */

2016-08-22T00:06:26Z

‎Blocks

Midas: /* Blocks */

2016-08-21T23:51:53Z

‎Blocks

Midas: /* Blocks */ "Warp Room" is the description that sdlview.exe gives for this flag

2016-08-21T23:50:13Z

‎Blocks: "Warp Room" is the description that sdlview.exe gives for this flag

Midas: /* Structure */

2013-11-17T22:56:08Z

‎Structure

Midas: /* Structure */

2013-11-17T22:54:25Z

‎Structure

Midas at 20:41, 1 October 2011

2011-10-01T20:41:58Z

Midas: Linked block attributes from pseudo code

2011-10-01T20:38:40Z

Linked block attributes from pseudo code

Fre-Ber at 21:36, 12 August 2005

2005-08-12T21:36:18Z

@@ Line 14: / Line 14: @@
 ===Blocks===
-The next section defines all the blocks in the city. First comes a list defining the perimeter of the block. This is a list of vertex references that defines a clockwise triangle fan surrounding the entire block. Each vertex reference is an index into the vertex list in the first section. Accompanied with each vertex reference is a block index. This block index indicates that the referenced block connects to this one at this point. To give the possibility that a vertex does not connect this block with another, all block indices are added by one. Zero means that no block connects at this vertex and n means that block ''n-1'' connects at this vertex. If more than one block connects at the same vertex, the vertex is repeated in the perimeter list for each of the connecting blocks.
+The next section defines all the blocks in the city. First comes a list defining the perimeter of the block. This is a list of vertex references that defines a counterclockwise triangle fan surrounding the entire block. Each vertex reference is an index into the vertex list in the first section. Accompanied with each vertex reference is a block index. This block index indicates that the referenced block connects to this one at this point. To give the possibility that a vertex does not connect this block with another, all block indices are added by one. Zero means that no block connects at this vertex and n means that block ''n-1'' connects at this vertex. If more than one block connects at the same vertex, the vertex is repeated in the perimeter list for each of the connecting blocks.
 After the perimeter comes a list of the various geometric primitives, or block attributes, that defines the interior of the block. Each of these attributes has a different structure. All known attributes are described on the [[Block attributes]] page. Even though the structure differs from attribute to attribute, each attribute is identified by an attribute id. This id is a 16 bit integer, but only the lowest seven bits control the type of the attribute. If bit eight is set, this attribute is the last attribute to be rendered. The MM2 renderer won't render anything after the last attribute even if there are more attributes in the list.

@@ Line 20: / Line 20: @@
 After the block definitions comes a list of eight bit flags, one byte for each block. The bits define the type of the block. Some flags are still unknown, but this is the current interpretation:
-;0: Unknown, this bit is never used
+;0: Unknown, this bit is never used.
-;1: Subteranean, this bit is set for blocks that are located below ground level. For example subways.
+;1: Subterranean, this bit is set for blocks that are located below ground level (e.g. subways). The echo effect will appear on this block.
 ;2: Plain, standard, ground level block.
 ;3: Road, all blocks with roads should have this bit set.
 ;4: Intersection, all blocks that serves as intersections for ambient traffic and pedestrians should have this bit set.
-;5: Unknown, something about the bound
+;5: Unknown, something about the bound.
-;6: Warp Room, used on anything above or below ground level (effect?)
+;6: Warp Room, used on anything above or below ground level. (effect?)
 ;7: INST, all blocks containing INST objects should have this bit set.

@@ Line 25: / Line 25: @@
 ;3: Road, all blocks with roads should have this bit set.
 ;4: Intersection, all blocks that serves as intersections for ambient traffic and pedestrians should have this bit set.
-;5: Unknown
+;5: Unknown, something about the bound
 ;6: Warp Room, used on anything above or below ground level (effect?)
 ;7: INST, all blocks containing INST objects should have this bit set.

@@ Line 25: / Line 25: @@
 ;3: Road, all blocks with roads should have this bit set.
 ;4: Intersection, all blocks that serves as intersections for ambient traffic and pedestrians should have this bit set.
-;5: Warp Room, used on anything above or below ground level (effect?)
+;5: Unknown
-;6: Unknown
+;6: Warp Room, used on anything above or below ground level (effect?)
 ;7: INST, all blocks containing INST objects should have this bit set.

@@ Line 20: / Line 20: @@
 After the block definitions comes a list of eight bit flags, one byte for each block. The bits define the type of the block. Some flags are still unknown, but this is the current interpretation:
-;0: Unknown
+;0: Unknown, this bit is never used
 ;1: Subteranean, this bit is set for blocks that are located below ground level. For example subways.
 ;2: Plain, standard, ground level block.
 ;3: Road, all blocks with roads should have this bit set.
 ;4: Intersection, all blocks that serves as intersections for ambient traffic and pedestrians should have this bit set.
-;5: Unknown
+;5: Warp Room, used on anything above or below ground level (effect?)
 ;6: Unknown
 ;7: INST, all blocks containing INST objects should have this bit set.

@@ Line 70: / Line 70: @@
       // Block based props section:
-      ulong              nPaths;          // Number of prop path definitions
+      ulong                 nPaths;          // Number of prop path definitions
-      BlockPath[nPaths]  paths;
+      BlockPath[nPaths]     paths;
+  }

@@ Line 45: / Line 45: @@
   struct PSDL
+  {
-      char[]             identifier = "PSD0";
+      char[4]               identifier = "PSD0";
-      ulong              targetSize = 2;  // Unknown
+      ulong                 targetSize = 2;  // Unknown
-      ulong              nVertices;       // Number of vertices
+      ulong                 nVertices;       // Number of vertices
-      Vertex[nVertices]  vertices;
+      Vertex[nVertices]     vertices;
-      ulong              nHeights;        // Number of heights
+      ulong                 nHeights;        // Number of heights
-      float[nHeights]    heights;
+      float[nHeights]       heights;
-      ulong              nTextures;       // Number of textures + 1
+      ulong                 nTextures;       // Number of textures + 1
-      String[nTextures]  textures;
+      String[nTextures - 1] textures;
-      ulong              nBlocks;         // Number of blocks + 1
+      ulong                 nBlocks;         // Number of blocks + 1
-      ulong              unknown0;        // Number of junctions?
+      ulong                 unknown0;        // Number of junctions?
-      Block[nBlocks - 1] blocks;
+      Block[nBlocks - 1]    blocks;
-      char[]             blockType;       // List of bytes with block type flags
+     char                  unknown1 = 0x00;
-                                         // starting with 0x00 and ending with 0xcd
+      char[nBlocks - 1]     blockType;       // List of bytes with block type flags
-      char[nBlocks - 1]  propRule;        // Identifies what prop rule to use for each
+     char                  unknown2 = 0xcd;
-                                         // block, in case a prop path traverses the
+      char[nBlocks - 1]     propRule;        // Identifies what prop rule to use for each
-                                         // block
+                                            // block, in case a prop path traverses the
       // Terrain dimensions:
-      Vertex             min;             // min and max defines a bounding box around
+      Vertex                min;             // min and max defines a bounding box around
-                                         // the entire terrain
+                                            // the entire terrain
-      Vertex             max;
+      Vertex                max;
-      Vertex             center;          // Center of bounding sphere
+      Vertex                center;          // Center of bounding sphere
-      float              radius;          // Radius of bounding sphere
+      float                 radius;          // Radius of bounding sphere
       // Block based props section:
@@ Line 90: / Line 91: @@
   struct Block
+  {
-      ulong                            nPerimeterPoints; // Number of perimeter
+      ulong                            nPerimeterPoints; // Number of perimeter points
-                                                        // points.
+      ulong                            attributeSize;    // Size of attribute list
       PerimeterPoint[nPerimeterPoints] perimeter;
       ushort[attributeSize]            [[Block attributes|attributes]];

@@ Line 96: / Line 96: @@
                                                          // list.
       PerimeterPoint[nPerimeterPoints] perimeter;
-      ushort[attributeSize]            attributes;
+      ushort[attributeSize]            [[Block attributes|attributes]];
+  }

← Older revision		Revision as of 21:36, 12 August 2005
Line 1:		Line 1:
−	~~[[Category:Cities]]~~
	==Introduction==		==Introduction==