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Change: Store station blocked/wires/pylons flags in map. (#11337)

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This stores three flags in unused map bits, and avoids having to look up
station graphics and custom station specs to determine blocked/wires/pylons
status.

This potentially affects rail pathfinding performance.

Savegame version is not bumped, as the flags can just be updated every
time.
This commit is contained in:
Peter Nelson
2023-09-30 12:30:25 +01:00
committed by GitHub
parent fd79d34ba9
commit b5dc9328f2
8 changed files with 124 additions and 51 deletions
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3
docs/landscape.html
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@@ -989,8 +989,11 @@
</tr>
</table>
</li>
<li>m6 bit 7: rail station / waypoint may have catenary pylons</li>
<li>m6 bit 6: rail station / waypoint may have catenary wires</li>
<li>m6 bits 5..3: the station type (rail, airport, truck, bus, oilrig, dock, buoy, waypoint)</li>
<li>m6 bit 2: pbs reservation state for railway stations/waypoints</li>
<li>m6 bit 0: rail station / waypoint is blocked</li>
<li>m7 bits 4..0: <a href="#OwnershipInfo">owner</a> of road (road stops)</li>
<li>m7: animation frame (railway stations/waypoints, airports)</li>

2
docs/landscape_grid.html
View File

@@ -188,7 +188,7 @@ the array so you can quickly see what is used and what is not.
<td class="bits" rowspan=2><span class="used" title="Random bits">XXXX</span> <span class="free">OOOO</span></td>
<td class="bits" rowspan=2><span class="used" title="Custom station specifications ID">XXXX XXXX</span></td>
<td class="bits"><span class="used" title="Graphics index">XXXX XXXX</span></td>
<td class="bits" rowspan=2><span class="free">OO</span><span class="used" title="Station type">XXX</span> <span class="used" title="Reserved track">X</span><span class="free">OO</span></td>
<td class="bits" rowspan=2><span class="used" title="May have pylons">X</span><span class="used" title="May have wires">X</span><span class="used" title="Station type">XXX</span> <span class="used" title="Reserved track">X</span><span class="free">O</span><span class="used" title="Tile is blocked">X</span></td>
<td class="bits" rowspan=2><span class="used" title="Animation frame">XXXX XXXX</span></td>
<td class="bits" rowspan=2><span class="free">OOOO OOOO OO</span><span class="used" title="Railway type">XX XXXX</span></td>
</tr>