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Fix: Industry coverage area is no longer rectangular. (#7464)

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AIs test station catchment in reverse to how players see station catchment.
This did not take account of non-rectangular station catchment areas, so AIs
could end up placing stations in locations that did not accept/deliver cargo.
This commit is contained in:
PeterN
2019-04-13 14:27:57 +01:00
committed by GitHub
parent abe8cf4985
commit 3bbd7ea2c1
3 changed files with 43 additions and 13 deletions
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44
src/script/api/script_tilelist.cpp
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@@ -49,6 +49,32 @@ void ScriptTileList::RemoveTile(TileIndex tile)
this->RemoveItem(tile);
}
/**
* Helper to get list of tiles that will cover an industry's production or acceptance.
* @param i Industry in question
* @param radius Catchment radius to test
* @param bta BitmapTileArea to fill
*/
static void FillIndustryCatchment(const Industry *i, int radius, BitmapTileArea &bta)
{
TILE_AREA_LOOP(cur_tile, i->location) {
if (!::IsTileType(cur_tile, MP_INDUSTRY) || ::GetIndustryIndex(cur_tile) != i->index) continue;
int tx = TileX(cur_tile);
int ty = TileY(cur_tile);
for (int y = -radius; y <= radius; y++) {
if (ty + y < 0 || ty + y > (int)MapMaxY()) continue;
for (int x = -radius; x <= radius; x++) {
if (tx + x < 0 || tx + x > (int)MapMaxX()) continue;
TileIndex tile = TileXY(tx + x, ty + y);
if (!IsValidTile(tile)) continue;
if (::IsTileType(tile, MP_INDUSTRY) && ::GetIndustryIndex(tile) == i->index) continue;
bta.SetTile(tile);
}
}
}
}
ScriptTileList_IndustryAccepting::ScriptTileList_IndustryAccepting(IndustryID industry_id, int radius)
{
if (!ScriptIndustry::IsValidIndustry(industry_id) || radius <= 0) return;
@@ -66,12 +92,11 @@ ScriptTileList_IndustryAccepting::ScriptTileList_IndustryAccepting(IndustryID in
if (!_settings_game.station.modified_catchment) radius = CA_UNMODIFIED;
TileArea ta = TileArea(i->location).Expand(radius);
TILE_AREA_LOOP(cur_tile, ta) {
if (!::IsValidTile(cur_tile)) continue;
/* Exclude all tiles that belong to this industry */
if (::IsTileType(cur_tile, MP_INDUSTRY) && ::GetIndustryIndex(cur_tile) == industry_id) continue;
BitmapTileArea bta(TileArea(i->location).Expand(radius));
FillIndustryCatchment(i, radius, bta);
BitmapTileIterator it(bta);
for (TileIndex cur_tile = it; cur_tile != INVALID_TILE; cur_tile = ++it) {
/* Only add the tile if it accepts the cargo (sometimes just 1 tile of an
* industry triggers the acceptance). */
CargoArray acceptance = ::GetAcceptanceAroundTiles(cur_tile, 1, 1, radius);
@@ -102,12 +127,11 @@ ScriptTileList_IndustryProducing::ScriptTileList_IndustryProducing(IndustryID in
if (!_settings_game.station.modified_catchment) radius = CA_UNMODIFIED;
TileArea ta = TileArea(i->location).Expand(radius);
TILE_AREA_LOOP(cur_tile, ta) {
if (!::IsValidTile(cur_tile)) continue;
/* Exclude all tiles that belong to this industry */
if (::IsTileType(cur_tile, MP_INDUSTRY) && ::GetIndustryIndex(cur_tile) == industry_id) continue;
BitmapTileArea bta(TileArea(i->location).Expand(radius));
FillIndustryCatchment(i, radius, bta);
BitmapTileIterator it(bta);
for (TileIndex cur_tile = it; cur_tile != INVALID_TILE; cur_tile = ++it) {
this->AddTile(cur_tile);
}
}