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(svn r1548) Move AI_PATHFINDER_IS_ROAD from ai.h to ai_pathfinder.c to avoid global namespace pollution, turn it into a function called IsRoad and improve the commments a bit

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This commit is contained in:
tron 2005-01-17 09:16:43 +00:00
parent a1e94b67d5
commit d4beff7954
2 changed files with 21 additions and 13 deletions
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7
ai.h
View File

@ -228,13 +228,6 @@ enum {
#define AI_PATHFINDER_FLAG_BRIDGE 1
#define AI_PATHFINDER_FLAG_TUNNEL 2
// A macro for mp_street, where 0x20 is depot
// mp_tunnelbridge, where 0xf0 is a bridge, and 0x4/0x2 means: roadtunnel/bridge
#define AI_PATHFINDER_IS_ROAD(tile) ((IsTileType(tile, MP_STREET) && !(_map5[tile] & 0x20)) || \
(IsTileType(tile, MP_TUNNELBRIDGE) && \
(((_map5[tile] & 0x80) == 0 && (_map5[tile] & 0x4) == 0x4) || \
((_map5[tile] & 0x80) != 0 && (_map5[tile] & 0x2) == 0x2))))
typedef void AiNew_StateFunction(Player *p);
// ai_new.c

27
ai_pathfinder.c
View File

@ -27,6 +27,21 @@ bool TestCanBuildStationHere(uint tile, byte dir) {
return true;
}
static bool IsRoad(TileIndex tile)
{
return
// MP_STREET, but not a road depot?
(IsTileType(tile, MP_STREET) && !(_map5[tile] & 0x20)) ||
(IsTileType(tile, MP_TUNNELBRIDGE) && (
// road tunnel?
((_map5[tile] & 0x80) == 0 && (_map5[tile] & 0x4) == 0x4) ||
// road bridge?
((_map5[tile] & 0x80) != 0 && (_map5[tile] & 0x2) == 0x2)
));
}
// Checks if a tile 'a' is between the tiles 'b' and 'c'
#define TILES_BETWEEN(a, b, c) (TileX(a) >= TileX(b) && TileX(a) <= TileX(c) && TileY(a) >= TileY(b) && TileY(a) <= TileY(c))
@ -186,7 +201,7 @@ static void AyStar_AiPathFinder_GetNeighbours(AyStar *aystar, OpenListNode *curr
// We do this simply by just building the tile!
// If the next step is a bridge, we have to enter it the right way
if (!PathFinderInfo->rail_or_road && AI_PATHFINDER_IS_ROAD(current->path.node.tile + TileOffsByDir(i))) {
if (!PathFinderInfo->rail_or_road && IsRoad(current->path.node.tile + TileOffsByDir(i))) {
if (IsTileType(current->path.node.tile + TileOffsByDir(i), MP_TUNNELBRIDGE)) {
// An existing bridge... let's test the direction ;)
if ((_map5[current->path.node.tile + TileOffsByDir(i)] & 1U) != (i & 1)) continue;
@ -198,7 +213,7 @@ static void AyStar_AiPathFinder_GetNeighbours(AyStar *aystar, OpenListNode *curr
}
}
// But also if we are on a bridge, we can only move a certain direction
if (!PathFinderInfo->rail_or_road && AI_PATHFINDER_IS_ROAD(current->path.node.tile)) {
if (!PathFinderInfo->rail_or_road && IsRoad(current->path.node.tile)) {
if (IsTileType(current->path.node.tile, MP_TUNNELBRIDGE)) {
// An existing bridge/tunnel... let's test the direction ;)
if ((_map5[current->path.node.tile] & 1U) != (i & 1)) continue;
@ -240,7 +255,7 @@ static void AyStar_AiPathFinder_GetNeighbours(AyStar *aystar, OpenListNode *curr
} else {
// Road check
dir = AiNew_GetRoadDirection(current->path.parent->node.tile, current->path.node.tile, current->path.node.tile + TileOffsByDir(i));
if (AI_PATHFINDER_IS_ROAD(current->path.node.tile)) {
if (IsRoad(current->path.node.tile)) {
if (IsTileType(current->path.node.tile, MP_TUNNELBRIDGE)) {
// We have a bridge, how nicely! We should mark it...
dir = 0;
@ -361,7 +376,7 @@ static int32 AyStar_AiPathFinder_CalculateG(AyStar *aystar, AyStarNode *current,
if (!PathFinderInfo->rail_or_road) {
// Road has the lovely advantage it can use other road... check if
// the current tile is road, and if so, give a good bonus
if (AI_PATHFINDER_IS_ROAD(current->tile)) {
if (IsRoad(current->tile)) {
res -= AI_PATHFINDER_ROAD_ALREADY_EXISTS_BONUS;
}
}
@ -378,7 +393,7 @@ static int32 AyStar_AiPathFinder_CalculateG(AyStar *aystar, AyStarNode *current,
res += AI_PATHFINDER_TILE_GOES_UP_PENALTY;
}
} else {
if (!(AI_PATHFINDER_IS_ROAD(parent->path.node.tile) && IsTileType(parent->path.node.tile, MP_TUNNELBRIDGE))) {
if (!(IsRoad(parent->path.node.tile) && IsTileType(parent->path.node.tile, MP_TUNNELBRIDGE))) {
r = GetRoadFoundation(parent_ti.tileh, AiNew_GetRoadDirection(parent->path.parent->node.tile, parent->path.node.tile, current->tile));
if (r >= 15 || r == 0)
res += AI_PATHFINDER_TILE_GOES_UP_PENALTY;
@ -423,7 +438,7 @@ static int32 AyStar_AiPathFinder_CalculateG(AyStar *aystar, AyStarNode *current,
if (parent->path.parent != NULL &&
AiNew_GetDirection(current->tile, parent->path.node.tile) != AiNew_GetDirection(parent->path.node.tile, parent->path.parent->node.tile)) {
// When road exists, we don't like turning, but its free, so don't be to piggy about it
if (AI_PATHFINDER_IS_ROAD(parent->path.node.tile))
if (IsRoad(parent->path.node.tile))
res += AI_PATHFINDER_DIRECTION_CHANGE_ON_EXISTING_ROAD_PENALTY;
else
res += AI_PATHFINDER_DIRECTION_CHANGE_PENALTY;