Difference between revisions of "Track element building"

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==General observations==
 
==General observations==
  
Track elements have two different models. The '''graphical model''' consists of a [[Resource file format#3d shapes|3D shape]] stored in either of GAME1.P3S or GAME2.P3S . Like any regular 3D shape, it can be modified using [[stressed]]. The graphical model, however, only controls the looks of the element. Actual physical behaviour is determined by a '''physical model'''. The physical model data appears to be spread over a number of files, and only parts of such data were located thus far. Briefly, track elements are made of potentially several plane surfaces, whose description is stored at the ''plan'' resource of GAME.PRE . Such plane surfaces, which are in principle boundless, are then weld together by a set of rules stored elsewhere. Another important piece of data which is not in ''plan'' is the type of surface associated with each plane (asphalt, grass, etc.). It is important to notice that plane surfaces in ''plan'' are not unique - for instance, the same planes are used for creating hill slopes and bridge ramps, and thus alterations to the plane surfaces will be reflected in both elements. The difference between the two elements is merely one of assembly - that is, where the planes are cut within the track tile in order to result in the track element shape. A similar situation is observed for the [[cork l/r]] and the [[pipe]] round surface. GAME.PRE also contains the ''wall'' resource, which stores data for non-drivable surfaces (such as bridge and building walls) in a poorly understood format.  
+
Track elements have two different models. The '''graphical model''' consists of a [[Resource file format#3d shapes|3D shape]] stored in either of GAME1.P3S or GAME2.P3S . Like any regular 3D shape, it can be modified using [[stressed]]. The graphical model, however, only controls the looks of the element. Actual physical behaviour is determined by a '''physical model'''. The physical model is only partly stored in resource files. Briefly, track elements are made of potentially several plane surfaces, whose description is stored at the ''plan'' resource of GAME.PRE . Such plane surfaces, which are in principle boundless, are then weld together by a set of rules hard coded within the game engne. Another important piece of data which is not in ''plan'' is the type of surface associated with each plane (asphalt, grass, etc.). It is important to notice that plane surfaces in ''plan'' are not unique - for instance, the same planes are used for creating hill slopes and bridge ramps, and thus alterations to the plane surfaces will be reflected in both elements. The difference between the two elements is merely one of assembly - that is, where the planes are cut within the track tile in order to result in the track element shape. A similar situation is observed for the [[cork l/r]] and the [[pipe]] round surface. GAME.PRE also contains the ''wall'' resource, which stores data for non-drivable surfaces (such as bridge and building walls) in a poorly understood format.
  
 
==GAME.PRE data==
 
==GAME.PRE data==
Line 12: Line 12:
  
 
  struct PLANE {
 
  struct PLANE {
 +
    WORD angleXY;
 
     WORD angleYZ;
 
     WORD angleYZ;
    WORD angleXY;
 
 
     VECTOR origin;
 
     VECTOR origin;
 
     VECTOR normal;
 
     VECTOR normal;
Line 27: Line 27:
 
  };
 
  };
  
''origin'' sets a point in space belonging to the plane (coordinate system is the same track tile system of the 3D shapes in GAME1/2), and ''normal'' sets a normal vector to the plane "normalized" to a length of 8192. These two vectors are enough to define a (boundless) plane. ''angleYZ'' and ''angleXY'' appear to contain the inclination of the planes (given in units of 360/1024 degree, with values ranging form 0 to 1023). Since such data is made redundant by ''origin'' and ''normal'' and the values have no obvious effect on the surface behaviour their actual function is unknown. Finally, ''rotationMatrix'' appears to be a rotation matrix (of column vectors "normalized" to 16384) which changes the orientation of the car normal vector when it changes surfaces. It must be correctly set so that the surface displays reasonable physical behaviour.
+
''origin'' sets a point in space belonging to the plane (coordinate system is the same track tile system of the 3D shapes in GAME1/2), and ''normal'' sets a normal vector to the plane "normalized" to a length of 8192. These two vectors are enough to define a (boundless) plane. ''angleXY'' and ''angleYZ'' appear to contain the inclination of the planes (given in units of 360/1024 degree, with values ranging form 0 to 1023). Since such data is made redundant by ''origin'' and ''normal'' and the values have no obvious effect on the surface behaviour their actual function is unknown. Finally, ''rotationMatrix'' appears to be a rotation matrix (of column vectors "normalized" to 16384) which changes the orientation of the car normal vector when it changes surfaces. It must be correctly set so that the surface displays reasonable physical behaviour.
  
 
The 536 structures in ''plan'' are arranged in 134 sets of 4 plane surfaces. Each plane in these quartets corresponds to the same part of the associated track element(s), the only difference being orientation relative to the track grid. The order on each quartet is predictable: the first one is in S->N orientation (pointing to +z) and the others correspond to counter-clockwise rotations (for pieces of bridge corners and banked roads, the first plane of the quartet is from the corner going S->W, the second one E->S and so on.).
 
The 536 structures in ''plan'' are arranged in 134 sets of 4 plane surfaces. Each plane in these quartets corresponds to the same part of the associated track element(s), the only difference being orientation relative to the track grid. The order on each quartet is predictable: the first one is in S->N orientation (pointing to +z) and the others correspond to counter-clockwise rotations (for pieces of bridge corners and banked roads, the first plane of the quartet is from the corner going S->W, the second one E->S and so on.).
Line 33: Line 33:
 
====List of planes====
 
====List of planes====
  
Block Line Address Description
+
''Collapsed table - use the "show" button to view it.''
1 1 37E Flat ground
+
 
2 5 406 Boulevard divider
+
{|class="wikitable collapsible collapsed" style="width:48em"
3 9 48E Bridges (Viaducts may not work if set too low)
+
|-
4 13 516 Ramps and hill slopes
+
! colspan=4 align="center" | Quartets of planes in ''plan''
5 17 59E Angled hill slopes (outer)
+
|-
6 21 626 Angled hill slopes (inner)
+
!Block !!Line !!Address !!Description
7 25 6AE Straight banked road
+
|-
8 29 736 Banked corner
+
|1 ||1 ||37E ||Flat ground
9 33 7BE Banked corner
+
|-
10 37 846 Banked corner
+
|2 ||5 ||406 ||Boulevard divider
11 41 8CE Banked corner
+
|-
12 45 956 Banked corner
+
|3 ||9 ||48E ||Bridges (Viaducts may not work if set too low)
13 49 9DE Banked corner
+
|-
14 53 A66 Banked corner
+
|4 ||13 ||516 ||Ramps and hill slopes
15 57 AEE Banked corner
+
|-
16 61 B76 Banked corner
+
|5 ||17 ||59E ||Angled hill slopes (outer)
17 65 BFE Banked corner
+
|-
18 69 C86 Banked corner
+
|6 ||21 ||626 ||Angled hill slopes (inner)
19 73 D0E Banked corner
+
|-
20 77 D96 Banked corner
+
|7 ||25 ||6AE ||Straight banked road
21 81 E1E Banked corner
+
|-
22 85 EA6 Banked corner
+
|8 ||29 ||736 ||Banked corner
23 89 F2E Banked corner
+
|-
24 93 FB6 Banked corner
+
|9 ||33 ||7BE ||Banked corner
25 97 103E Banked corner
+
|-
26 101 10C6 Banked road entrance (1st orientation is inner=left)
+
|10 ||37 ||846 ||Banked corner
27 105 114E Banked road entrance
+
|-
28 109 11D6 Banked road entrance
+
|11 ||41 ||8CE ||Banked corner
29 113 125E Banked road entrance
+
|-
30 117 12E6 Banked road entrance
+
|12 ||45 ||956 ||Banked corner
31 121 136E Banked road entrance
+
|-
32 125 13F6 Banked road entrance
+
|13 ||49 ||9DE ||Banked corner
33 129 147E Banked road entrance
+
|-
34 133 1506 Banked road entrance
+
|14 ||53 ||A66 ||Banked corner
35 137 158E Banked road entrance
+
|-
36 141 1616 (unknown)
+
|15 ||57 ||AEE ||Banked corner
37 145 169E (unknown)
+
|-
38 149 1726 (unknown)
+
|16 ||61 ||B76 ||Banked corner
39 153 17AE (unknown)
+
|-
40 157 1836 (unknown)
+
|17 ||65 ||BFE ||Banked corner
41 161 18BE (unknown)
+
|-
42 165 1946 (unknown)
+
|18 ||69 ||C86 ||Banked corner
43 169 19CE (unknown)
+
|-
44 173 1A56 (unknown)
+
|19 ||73 ||D0E ||Banked corner
45 177 1ADE (unknown)
+
|-
46 181 1B66 Loop surface
+
|20 ||77 ||D96 ||Banked corner
47 185 1BEE Loop surface
+
|-
48 189 1C76 Loop surface
+
|21 ||81 ||E1E ||Banked corner
49 193 1CFE Loop surface
+
|-
50 197 1D86 Loop surface
+
|22 ||85 ||EA6 ||Banked corner
51 201 1E0E Loop surface
+
|-
52 205 1E96 Loop surface
+
|23 ||89 ||F2E ||Banked corner
53 209 1F1E Loop surface
+
|-
54 213 1FA6 Loop surface
+
|24 ||93 ||FB6 ||Banked corner
55 217 202E Loop surface
+
|-
56 221 20B6 Loop surface
+
|25 ||97 ||103E ||Banked corner
57 225 213E Loop surface
+
|-
58 229 21C6 Pipe surface (grounded)
+
|26 ||101 ||10C6 ||Banked road entrance B (1st orientation is inner=left)
59 233 224E Pipe, cork l/r surface
+
|-
60 237 22D6 Pipe, cork l/r surface
+
|27 ||105 ||114E ||Banked road entrance B
61 241 235E Pipe, cork l/r surface
+
|-
62 245 23E6 Pipe, cork l/r surface
+
|28 ||109 ||11D6 ||Banked road entrance B
63 249 246E Pipe, cork l/r surface
+
|-
64 253 24F6 Pipe, cork l/r surface
+
|29 ||113 ||125E ||Banked road entrance B
65 257 257E Pipe, cork l/r surface
+
|-
66 261 2606 Pipe, cork l/r surface
+
|30 ||117 ||12E6 ||Banked road entrance B
67 265 268E Pipe, cork l/r surface
+
|-
68 269 2716 Pipe, cork l/r surface
+
|31 ||121 ||136E ||Banked road entrance B
69 273 279E Pipe, cork l/r surface
+
|-
70 277 2826 Pipe obstacle
+
|32 ||125 ||13F6 ||Banked road entrance B
71 281 28AE Pipe entrance (grounded)
+
|-
72 285 2936 Pipe entrance
+
|33 ||129 ||147E ||Banked road entrance B
73 289 29BE Pipe entrance
+
|-
74 293 2A46 Pipe entrance
+
|34 ||133 ||1506 ||Banked road entrance B
75 297 2ACE Pipe entrance
+
|-
76 301 2B56 Pipe entrance
+
|35 ||137 ||158E ||Banked road entrance B
77 305 2BDE Pipe entrance
+
|-
78 309 2C66 Pipe entrance
+
|36 ||141 ||1616 ||Banked road entrance A
79 313 2CEE Pipe entrance
+
|-
80 317 2D76 LH cork u/d entrance
+
|37 ||145 ||169E ||Banked road entrance A
81 321 2DFE Left-handed cork u/d
+
|-
82 325 2E86 Left-handed cork u/d
+
|38 ||149 ||1726 ||Banked road entrance A
83 329 2F0E Left-handed cork u/d
+
|-
84 333 2F96 Left-handed cork u/d
+
|39 ||153 ||17AE ||Banked road entrance A
85 337 301E Left-handed cork u/d
+
|-
86 341 30A6 Left-handed cork u/d
+
|40 ||157 ||1836 ||Banked road entrance A
87 345 312E Left-handed cork u/d
+
|-
88 349 31B6 Left-handed cork u/d
+
|41 ||161 ||18BE ||Banked road entrance A
89 353 323E Left-handed cork u/d
+
|-
90 357 32C6 Left-handed cork u/d
+
|42 ||165 ||1946 ||Banked road entrance A
91 361 334E Left-handed cork u/d
+
|-
92 365 33D6 Left-handed cork u/d
+
|43 ||169 ||19CE ||Banked road entrance A
93 369 345E Left-handed cork u/d
+
|-
94 373 34E6 Left-handed cork u/d
+
|44 ||173 ||1A56 ||Banked road entrance A
95 377 356E Left-handed cork u/d
+
|-
96 381 35F6 Left-handed cork u/d
+
|45 ||177 ||1ADE ||Banked road entrance A
97 385 367E Left-handed cork u/d
+
|-
98 389 3706 Left-handed cork u/d
+
|46 ||181 ||1B66 ||Loop surface
99 393 378E Left-handed cork u/d
+
|-
100 397 3816 Left-handed cork u/d
+
|47 ||185 ||1BEE ||Loop surface
101 401 389E Left-handed cork u/d
+
|-
102 405 3926 Left-handed cork u/d
+
|48 ||189 ||1C76 ||Loop surface
103 409 39AE Left-handed cork u/d
+
|-
104 413 3A36 Left-handed cork u/d
+
|49 ||193 ||1CFE ||Loop surface
105 417 3ABE LH cork u/d bridge
+
|-
106 421 3B46 RH cork u/d entrance
+
|50 ||197 ||1D86 ||Loop surface
107 425 3BCE Right-handed cork u/d
+
|-
108 429 3C56 Right-handed cork u/d
+
|51 ||201 ||1E0E ||Loop surface
109 433 3CDE Right-handed cork u/d
+
|-
110 437 3D66 Right-handed cork u/d
+
|52 ||205 ||1E96 ||Loop surface
111 441 3DEE Right-handed cork u/d
+
|-
112 445 3E76 Right-handed cork u/d
+
|53 ||209 ||1F1E ||Loop surface
113 449 3EFE Right-handed cork u/d
+
|-
114 453 3F86 Right-handed cork u/d
+
|54 ||213 ||1FA6 ||Loop surface
115 457 400E Right-handed cork u/d
+
|-
116 461 4096 Right-handed cork u/d
+
|55 ||217 ||202E ||Loop surface
117 465 411E Right-handed cork u/d
+
|-
118 469 41A6 Right-handed cork u/d
+
|56 ||221 ||20B6 ||Loop surface
119 473 422E Right-handed cork u/d
+
|-
120 477 42B6 Right-handed cork u/d
+
|57 ||225 ||213E ||Loop surface
121 481 433E Right-handed cork u/d
+
|-
122 485 43C6 Right-handed cork u/d
+
|58 ||229 ||21C6 ||Pipe surface (grounded)
123 489 444E Right-handed cork u/d
+
|-
124 493 44D6 Right-handed cork u/d
+
|59 ||233 ||224E ||Pipe, cork l/r surface
125 497 455E Right-handed cork u/d
+
|-
126 501 45E6 Right-handed cork u/d
+
|60 ||237 ||22D6 ||Pipe, cork l/r surface
127 505 466E Right-handed cork u/d
+
|-
128 509 46F6 Right-handed cork u/d
+
|61 ||241 ||235E ||Pipe, cork l/r surface
129 513 477E Right-handed cork u/d
+
|-
130 517 4806 Right-handed cork u/d
+
|62 ||245 ||23E6 ||Pipe, cork l/r surface
131 521 488E RH corh u/d bridge
+
|-
132 525 4916
+
|63 ||249 ||246E ||Pipe, cork l/r surface
133 529 499E
+
|-
134 533 4A26 Tunnel roof
+
|64 ||253 ||24F6 ||Pipe, cork l/r surface
 +
|-
 +
|65 ||257 ||257E ||Pipe, cork l/r surface
 +
|-
 +
|66 ||261 ||2606 ||Pipe, cork l/r surface
 +
|-
 +
|67 ||265 ||268E ||Pipe, cork l/r surface
 +
|-
 +
|68 ||269 ||2716 ||Pipe, cork l/r surface
 +
|-
 +
|69 ||273 ||279E ||Pipe, cork l/r surface
 +
|-
 +
|70 ||277 ||2826 ||Pipe obstacle
 +
|-
 +
|71 ||281 ||28AE ||Pipe entrance (grounded)
 +
|-
 +
|72 ||285 ||2936 ||Pipe entrance
 +
|-
 +
|73 ||289 ||29BE ||Pipe entrance
 +
|-
 +
|74 ||293 ||2A46 ||Pipe entrance
 +
|-
 +
|75 ||297 ||2ACE ||Pipe entrance
 +
|-
 +
|76 ||301 ||2B56 ||Pipe entrance
 +
|-
 +
|77 ||305 ||2BDE ||Pipe entrance
 +
|-
 +
|78 ||309 ||2C66 ||Pipe entrance
 +
|-
 +
|79 ||313 ||2CEE ||Pipe entrance
 +
|-
 +
|80 ||317 ||2D76 ||LH cork u/d entrance
 +
|-
 +
|81 ||321 ||2DFE ||Left-handed cork u/d
 +
|-
 +
|82 ||325 ||2E86 ||Left-handed cork u/d
 +
|-
 +
|83 ||329 ||2F0E ||Left-handed cork u/d
 +
|-
 +
|84 ||333 ||2F96 ||Left-handed cork u/d
 +
|-
 +
|85 ||337 ||301E ||Left-handed cork u/d
 +
|-
 +
|86 ||341 ||30A6 ||Left-handed cork u/d
 +
|-
 +
|87 ||345 ||312E ||Left-handed cork u/d
 +
|-
 +
|88 ||349 ||31B6 ||Left-handed cork u/d
 +
|-
 +
|89 ||353 ||323E ||Left-handed cork u/d
 +
|-
 +
|90 ||357 ||32C6 ||Left-handed cork u/d
 +
|-
 +
|91 ||361 ||334E ||Left-handed cork u/d
 +
|-
 +
|92 ||365 ||33D6 ||Left-handed cork u/d
 +
|-
 +
|93 ||369 ||345E ||Left-handed cork u/d
 +
|-
 +
|94 ||373 ||34E6 ||Left-handed cork u/d
 +
|-
 +
|95 ||377 ||356E ||Left-handed cork u/d
 +
|-
 +
|96 ||381 ||35F6 ||Left-handed cork u/d
 +
|-
 +
|97 ||385 ||367E ||Left-handed cork u/d
 +
|-
 +
|98 ||389 ||3706 ||Left-handed cork u/d
 +
|-
 +
|99 ||393 ||378E ||Left-handed cork u/d
 +
|-
 +
|100 ||397 ||3816 ||Left-handed cork u/d
 +
|-
 +
|101 ||401 ||389E ||Left-handed cork u/d
 +
|-
 +
|102 ||405 ||3926 ||Left-handed cork u/d
 +
|-
 +
|103 ||409 ||39AE ||Left-handed cork u/d
 +
|-
 +
|104 ||413 ||3A36 ||Left-handed cork u/d
 +
|-
 +
|105 ||417 ||3ABE ||LH cork u/d bridge
 +
|-
 +
|106 ||421 ||3B46 ||RH cork u/d entrance
 +
|-
 +
|107 ||425 ||3BCE ||Right-handed cork u/d
 +
|-
 +
|108 ||429 ||3C56 ||Right-handed cork u/d
 +
|-
 +
|109 ||433 ||3CDE ||Right-handed cork u/d
 +
|-
 +
|110 ||437 ||3D66 ||Right-handed cork u/d
 +
|-
 +
|111 ||441 ||3DEE ||Right-handed cork u/d
 +
|-
 +
|112 ||445 ||3E76 ||Right-handed cork u/d
 +
|-
 +
|113 ||449 ||3EFE ||Right-handed cork u/d
 +
|-
 +
|114 ||453 ||3F86 ||Right-handed cork u/d
 +
|-
 +
|115 ||457 ||400E ||Right-handed cork u/d
 +
|-
 +
|116 ||461 ||4096 ||Right-handed cork u/d
 +
|-
 +
|117 ||465 ||411E ||Right-handed cork u/d
 +
|-
 +
|118 ||469 ||41A6 ||Right-handed cork u/d
 +
|-
 +
|119 ||473 ||422E ||Right-handed cork u/d
 +
|-
 +
|120 ||477 ||42B6 ||Right-handed cork u/d
 +
|-
 +
|121 ||481 ||433E ||Right-handed cork u/d
 +
|-
 +
|122 ||485 ||43C6 ||Right-handed cork u/d
 +
|-
 +
|123 ||489 ||444E ||Right-handed cork u/d
 +
|-
 +
|124 ||493 ||44D6 ||Right-handed cork u/d
 +
|-
 +
|125 ||497 ||455E ||Right-handed cork u/d
 +
|-
 +
|126 ||501 ||45E6 ||Right-handed cork u/d
 +
|-
 +
|127 ||505 ||466E ||Right-handed cork u/d
 +
|-
 +
|128 ||509 ||46F6 ||Right-handed cork u/d
 +
|-
 +
|129 ||513 ||477E ||Right-handed cork u/d
 +
|-
 +
|130 ||517 ||4806 ||Right-handed cork u/d
 +
|-
 +
|131 ||521 ||488E ||RH cork u/d bridge
 +
|-
 +
|132 ||525 ||4916 ||S/F line auxiliary
 +
|-
 +
|133 ||529 ||499E ||S/F line auxiliary
 +
|-
 +
|134 ||533 ||4A26 ||Tunnel roof
 +
|}
  
 
===The wall resource===
 
===The wall resource===
Line 183: Line 324:
 
==External links==
 
==External links==
  
* [http://forum.stunts.hu/index.php?topic=2273.msg41717#msg41717The original post on GAME.PRE data]
+
* [http://forum.stunts.hu/index.php?topic=2273.msg41717#msg41717 The original post on GAME.PRE data]
  
 
[[Category:Modding]]
 
[[Category:Modding]]
 +
[[Category:Internals]]

Latest revision as of 04:15, 13 March 2019

This article aims to present what is currently know on how Stunts stores the data which is used to assemble track elements such as roads, bridges, loops and scenery. The ultimate goal is to be able to effectively modify the existing elements and create new ones. There is still much to learn before that becomes possible, though - which also means there will be large gaps on this article for the time being.

General observations

Track elements have two different models. The graphical model consists of a 3D shape stored in either of GAME1.P3S or GAME2.P3S . Like any regular 3D shape, it can be modified using stressed. The graphical model, however, only controls the looks of the element. Actual physical behaviour is determined by a physical model. The physical model is only partly stored in resource files. Briefly, track elements are made of potentially several plane surfaces, whose description is stored at the plan resource of GAME.PRE . Such plane surfaces, which are in principle boundless, are then weld together by a set of rules hard coded within the game engne. Another important piece of data which is not in plan is the type of surface associated with each plane (asphalt, grass, etc.). It is important to notice that plane surfaces in plan are not unique - for instance, the same planes are used for creating hill slopes and bridge ramps, and thus alterations to the plane surfaces will be reflected in both elements. The difference between the two elements is merely one of assembly - that is, where the planes are cut within the track tile in order to result in the track element shape. A similar situation is observed for the cork l/r and the pipe round surface. GAME.PRE also contains the wall resource, which stores data for non-drivable surfaces (such as bridge and building walls) in a poorly understood format.

GAME.PRE data

The plan resource

plan is composed of 536 structures of 34 bytes each, each associated with a plane which in turn forms part of a drivable surface. The structures consist of:

struct PLANE {
    WORD angleXY;
    WORD angleYZ;
    VECTOR origin;
    VECTOR normal;
    VECTOR[3] rotationMatrix;
};

In the above, WORD = 2-byte signed integer and:

struct VECTOR {
    WORD x;
    WORD y;
    WORD z;
};

origin sets a point in space belonging to the plane (coordinate system is the same track tile system of the 3D shapes in GAME1/2), and normal sets a normal vector to the plane "normalized" to a length of 8192. These two vectors are enough to define a (boundless) plane. angleXY and angleYZ appear to contain the inclination of the planes (given in units of 360/1024 degree, with values ranging form 0 to 1023). Since such data is made redundant by origin and normal and the values have no obvious effect on the surface behaviour their actual function is unknown. Finally, rotationMatrix appears to be a rotation matrix (of column vectors "normalized" to 16384) which changes the orientation of the car normal vector when it changes surfaces. It must be correctly set so that the surface displays reasonable physical behaviour.

The 536 structures in plan are arranged in 134 sets of 4 plane surfaces. Each plane in these quartets corresponds to the same part of the associated track element(s), the only difference being orientation relative to the track grid. The order on each quartet is predictable: the first one is in S->N orientation (pointing to +z) and the others correspond to counter-clockwise rotations (for pieces of bridge corners and banked roads, the first plane of the quartet is from the corner going S->W, the second one E->S and so on.).

List of planes

Collapsed table - use the "show" button to view it.

The wall resource

wall is composed of the following structures:

struct WALL {
    WORD angleXZ;
    WORD x;
    WORD z;
};

The data in these structures appear to be ground-plane projections of wall segments, with x and z making endpoints and angleXZ defining segment angles. Verification of that, and identification of wall pieces, is best performed by plotting the x and z values. There must be additional pieces of data involved in wall assembly through, as there is no info on wall heights, nor any obvious link to data in plan; also, simple alterations to wall pieces associated with elements such as block houses or slalom blocks do not work as intended.

External links