VisitResult ResourceUnitFinder::Visit(TerrainTraversal &terrainTraversal, const Vec2i &pos, const Vec2i &from)
{
if (!worker.Player->AiEnabled && !Map.Field(pos)->playerInfo.IsExplored(*worker.Player)) {
return VisitResult_DeadEnd;
}
CUnit *mine = Map.Field(pos)->UnitCache.find(res_finder);
if (mine && mine != *resultMine && MineIsUsable(*mine)) {
ResourceUnitFinder::ResourceUnitFinder_Cost cost;
cost.SetFrom(*mine, deposit, check_usage);
if (cost < bestCost) {
*resultMine = mine;
if (cost.IsMin()) {
return VisitResult_Finished;
}
bestCost = cost;
}
}
if (CanMoveToMask(pos, movemask)) { // reachable
if (terrainTraversal.Get(pos) < maxRange) {
return VisitResult_Ok;
} else {
return VisitResult_DeadEnd;
}
} else { // unreachable
return VisitResult_DeadEnd;
}
}
VisitResult NearReachableTerrainFinder::Visit(TerrainTraversal &terrainTraversal, const Vec2i &pos, const Vec2i &from)
{
//Wyrmgus start
// if (!player.AiEnabled && !Map.Field(pos)->playerInfo.IsExplored(player)) {
if (!Map.Field(pos)->playerInfo.IsExplored(player)) {
//Wyrmgus end
return VisitResult_DeadEnd;
}
// Look if found what was required.
if (CanMoveToMask(pos, movemask)) {
if (resPos) {
*resPos = from;
}
return VisitResult_Finished;
}
if (Map.Field(pos)->CheckMask(resmask)) { // reachable
if (terrainTraversal.Get(pos) <= maxDist) {
return VisitResult_Ok;
} else {
return VisitResult_DeadEnd;
}
} else { // unreachable
return VisitResult_DeadEnd;
}
}
VisitResult AiForceRallyPointFinder::Visit(TerrainTraversal &terrainTraversal, const Vec2i &pos, const Vec2i &from)
{
const int minDist = 15;
if (AiEnemyUnitsInDistance(*startUnit.Player, NULL, pos, minDist) == false
&& Distance(pos, startPos) <= abs(distance - minDist)) {
*resultPos = pos;
return VisitResult_Finished;
}
if (CanMoveToMask(pos, movemask)) { // reachable
return VisitResult_Ok;
} else { // unreachable
return VisitResult_DeadEnd;
}
}
VisitResult UnitFinder::Visit(TerrainTraversal &terrainTraversal, const Vec2i &pos, const Vec2i &from)
{
if (!player.AiEnabled && !Map.Field(pos)->playerInfo.IsExplored(player)) {
return VisitResult_DeadEnd;
}
// Look if found what was required.
CUnit *unit = FindUnitAtPos(pos);
if (unit) {
*unitP = unit;
return VisitResult_Finished;
}
if (CanMoveToMask(pos, movemask)) { // reachable
if (terrainTraversal.Get(pos) <= maxDist) {
return VisitResult_Ok;
} else {
return VisitResult_DeadEnd;
}
} else { // unreachable
return VisitResult_DeadEnd;
}
}
static int AiFindMiningPlace(const CUnit &worker,
const CUnitType &type,
int nx, int ny,
Vec2i *dpos,
int resource)
{
const Vec2i offset[] = {{0, -1}, {-1, 0}, {1, 0}, {0, 1}, {-1, -1}, {1, -1}, {-1, 1}, {1, 1}};
Vec2i pos;
Vec2i rpos;
int wp;
int ep;
unsigned char *m;
CUnit *mine;
pos.x = (nx != -1 ? nx : worker.tilePos.x);
pos.y = (ny != -1 ? ny : worker.tilePos.y);
int size = Map.Info.MapWidth * Map.Info.MapHeight / 4;
Vec2i *points = new Vec2i[size];
//
// Make movement matrix. FIXME: can create smaller matrix.
//
unsigned char *morg = MakeMatrix();
int w = Map.Info.MapWidth + 2;
unsigned char *matrix = morg + w + w + 2;
points[0] = pos;
int rp = 0;
//if(worker->tilePos == pos)
matrix[pos.x + pos.y * w] = 1; // mark start point
ep = wp = 1; // start with one point
int mask = worker.Type->MovementMask;
//
// Pop a point from stack, push all neighbors which could be entered.
//
for (;;) {
while (rp != ep) {
rpos = points[rp];
for (int i = 0; i < 8; ++i) { // mark all neighbors
pos = rpos + offset[i];
m = matrix + pos.x + pos.y * w;
if (*m) { // already checked
continue;
}
//
// Look if there is a mine area
//
if ((mine = ResourceOnMap(pos, resource, false)) &&
AiFindBuildingPlace2(worker, type, mine->tilePos.x, mine->tilePos.y, dpos)) {
delete[] morg;
delete[] points;
return 1;
}
if (CanMoveToMask(pos, mask)) { // reachable
*m = 1;
points[wp] = pos; // push the point
if (++wp >= size) { // round about
wp = 0;
}
} else { // unreachable
*m = 99;
}
}
if (++rp >= size) { // round about
rp = 0;
}
}
//
// Continue with next frame.
//
if (rp == wp) { // unreachable, no more points available
break;
}
ep = wp;
}
delete[] morg;
delete[] points;
return 0;
}
/**
** Find free building place for lumber mill. (flood fill version)
**
** @param worker Worker to build building.
** @param type Type of building.
** @param nx Start search X position (if == -1 then unit X pos used).
** @param ny Start search X position (if == -1 then unit X pos used).
** @param dpos Pointer for position returned.
**
** @return True if place found, false if not found.
**
** @todo FIXME: This is slow really slow, using two flood
** fills, is not a perfect solution.
*/
static int AiFindLumberMillPlace(const CUnit &worker, const CUnitType &type,
int nx, int ny, Vec2i *dpos)
{
const Vec2i offset[] = {{0, -1}, {-1, 0}, {1, 0}, {0, 1}, {-1, -1}, {1, -1}, {-1, 1}, {1, 1}};
Vec2i *points;
int size;
Vec2i rpos;
int mask;
int wp;
int rp;
int ep;
int i;
int w;
unsigned char *m;
unsigned char *morg;
unsigned char *matrix;
Vec2i pos;
pos.x = nx != -1 ? nx : worker.tilePos.x;
pos.y = ny != -1 ? ny : worker.tilePos.y;
size = Map.Info.MapWidth * Map.Info.MapHeight / 4;
points = new Vec2i[size];
//
// Make movement matrix.
//
morg = MakeMatrix();
w = Map.Info.MapWidth + 2;
matrix = morg + w + w + 2;
points[0] = pos;
rp = 0;
matrix[pos.x + pos.y * w] = 1; // mark start point
ep = wp = 1; // start with one point
mask = worker.Type->MovementMask;
//
// Pop a point from stack, push all neightbors which could be entered.
//
for (;;) {
while (rp != ep) {
rpos = points[rp];
for (i = 0; i < 8; ++i) { // mark all neighbors
pos = rpos + offset[i];
m = matrix + pos.x + pos.y * w;
if (*m) { // already checked
continue;
}
//
// Look if there is wood
//
if (Map.ForestOnMap(pos)) {
if (AiFindBuildingPlace2(worker, type, pos.x, pos.y, dpos)) {
delete[] morg;
delete[] points;
return 1;
}
}
if (CanMoveToMask(pos, mask)) { // reachable
*m = 1;
points[wp] = pos; // push the point
if (++wp >= size) { // round about
wp = 0;
}
} else { // unreachable
*m = 99;
}
}
if (++rp >= size) { // round about
rp = 0;
}
}
//
// Continue with next frame.
//
if (rp == wp) { // unreachable, no more points available
break;
}
ep = wp;
}
delete[] morg;
delete[] points;
return 0;
}
/**
** Find building place for hall. (flood fill version)
**
** The best place:
** 1) near to goldmine.
** !2) near to wood.
** !3) near to worker and must be reachable.
** 4) no enemy near it.
** 5) no hall already near
** !6) enough gold in mine
**
** @param worker Worker to build building.
** @param type Type of building.
** @param nx Start search X position (if == -1 then unit X pos used).
** @param ny Start search Y position (if == -1 then unit Y pos used).
** @param dpos Pointer for position returned.
**
** @return True if place found, false if not found.
**
** @todo FIXME: This is slow really slow, using
** two flood fills, is not a perfect solution.
*/
static int AiFindHallPlace(const CUnit &worker,
const CUnitType &type,
int nx, int ny,
Vec2i *dpos,
int resource = GoldCost)
{
const Vec2i offset[] = {{0, -1}, {-1, 0}, {1, 0}, {0, 1}, {-1, -1}, {1, -1}, {-1, 1}, {1, 1}};
Vec2i *points;
int size;
Vec2i pos;
Vec2i rpos;
int mask;
int wp;
int rp;
int ep;
int w;
unsigned char *m;
unsigned char *morg;
unsigned char *matrix;
CUnit *mine;
pos.x = (nx != -1 ? nx : worker.tilePos.x);
pos.y = (ny != -1 ? ny : worker.tilePos.y);
size = Map.Info.MapWidth * Map.Info.MapHeight / 4;
points = new Vec2i[size];
//
// Make movement matrix. FIXME: can create smaller matrix.
//
morg = MakeMatrix();
w = Map.Info.MapWidth + 2;
matrix = morg + w + w + 2;
points[0] = pos;
rp = 0;
matrix[pos.x + pos.y * w] = 1; // mark start point
ep = wp = 1; // start with one point
mask = worker.Type->MovementMask;
//
// Pop a point from stack, push all neighbors which could be entered.
//
for (;;) {
while (rp != ep) {
rpos = points[rp];
for (int i = 0; i < 8; ++i) { // mark all neighbors
pos = rpos + offset[i];
m = matrix + pos.x + pos.y * w;
if (*m) { // already checked
continue;
}
//
// Look if there is a mine
//
if ((mine = ResourceOnMap(pos, resource))) {
int buildings;
int j;
int nunits;
CUnit *units[UnitMax];
buildings = 0;
//
// Check units around mine
//
Vec2i minpos = {mine->tilePos.x - 5, mine->tilePos.y - 5};
Vec2i maxpos = {mine->tilePos.x + mine->Type->TileWidth + 5,
mine->tilePos.y + mine->Type->TileHeight + 5
};
Map.FixSelectionArea(minpos, maxpos);
nunits = Map.SelectFixed(minpos, maxpos, units);
for (j = 0; j < nunits; ++j) {
// Enemy near mine
if (AiPlayer->Player->Enemy &
(1 << units[j]->Player->Index)) {
break;
}
// Town hall near mine
if (units[j]->Type->CanStore[resource]) {
break;
}
// Town hall may not be near but we may be using it, check
// for 2 buildings near it and assume it's been used
if (units[j]->Type->Building &&
!units[j]->Type->GivesResource == resource) {
++buildings;
if (buildings == 2) {
break;
}
}
}
if (j == nunits) {
if (AiFindBuildingPlace2(worker, type, pos.x, pos.y, dpos)) {
delete[] morg;
delete[] points;
return 1;
}
}
}
if (CanMoveToMask(pos, mask)) { // reachable
*m = 1;
points[wp] = pos; // push the point
if (++wp >= size) { // round about
wp = 0;
}
} else { // unreachable
*m = 99;
}
}
if (++rp >= size) { // round about
rp = 0;
}
}
//
// Continue with next frame.
//
if (rp == wp) { // unreachable, no more points available
break;
}
ep = wp;
}
delete[] morg;
delete[] points;
return 0;
}
/**
** Find free building place. (flood fill version)
**
** @param worker Worker to build building.
** @param type Type of building.
** @param ox Original X position to try building
** @param oy Original Y position to try building
** @param dpos Pointer for position returned.
**
** @return True if place found, false if no found.
*/
static int AiFindBuildingPlace2(const CUnit &worker, const CUnitType &type, int ox, int oy, Vec2i *dpos)
{
const Vec2i offset[] = {{0, -1}, {-1, 0}, {1, 0}, {0, 1}, {-1, -1}, {1, -1}, {-1, 1}, {1, 1}};
Vec2i *points;
int size;
Vec2i pos = {ox, oy};
Vec2i rpos;
int mask;
int wp;
int rp;
int ep;
unsigned char *m;
Vec2i backupPos = {-1, -1};
bool backupok;
//
// Look if we can build at current place.
//
if (CanBuildUnitType(&worker, type, pos, 1) &&
!AiEnemyUnitsInDistance(worker.Player, NULL, pos, 8)) {
if (AiCheckSurrounding(worker, type, pos.x, pos.y, backupok)) {
*dpos = pos;
return 1;
} else if (backupok) {
backupPos = pos;
}
}
size = Map.Info.MapWidth * Map.Info.MapHeight / 4;
points = new Vec2i[size];
//
// Make movement matrix.
//
unsigned char *matrix = CreateMatrix();
const int w = Map.Info.MapWidth + 2;
mask = worker.Type->MovementMask;
// Ignore all possible mobile units.
mask &= ~(MapFieldLandUnit | MapFieldAirUnit | MapFieldSeaUnit);
points[0] = pos;
// also use the bottom right
if ((type.TileWidth > 1 || type.TileHeight > 1) &&
pos.x + type.TileWidth - 1 < Map.Info.MapWidth &&
pos.y + type.TileHeight - 1 < Map.Info.MapHeight) {
points[1].x = pos.x + type.TileWidth - 1;
points[1].y = pos.y + type.TileHeight - 1;
ep = wp = 2; // start with two points
} else {
ep = wp = 1; // start with one point
}
matrix += w + w + 2;
rp = 0;
matrix[pos.x + pos.y * w] = 1; // mark start point
//
// Pop a point from stack, push all neighbours which could be entered.
//
for (;;) {
while (rp != ep) {
rpos = points[rp];
for (int i = 0; i < 8; ++i) { // mark all neighbors
pos = rpos + offset[i];
m = matrix + pos.x + pos.y * w;
if (*m) { // already checked
continue;
}
//
// Look if we can build here and no enemies nearby.
//
if (CanBuildUnitType(&worker, type, pos, 1) &&
!AiEnemyUnitsInDistance(worker.Player, NULL, pos, 8)) {
if (AiCheckSurrounding(worker, type, pos.x, pos.y, backupok)) {
*dpos = pos;
delete[] points;
return 1;
} else if (backupok && backupPos.x == -1) {
backupPos = pos;
}
}
if (CanMoveToMask(pos, mask)) { // reachable
*m = 1;
points[wp] = pos; // push the point
if (++wp >= size) { // round about
wp = 0;
}
} else { // unreachable
*m = 99;
}
}
if (++rp >= size) { // round about
rp = 0;
}
}
//
// Continue with next frame.
//
if (rp == wp) { // unreachable, no more points available
break;
}
ep = wp;
}
delete[] points;
if (backupPos.x != -1) {
*dpos = backupPos;
return 1;
}
return 0;
}
/**
** Can move to this point, applying mask.
**
** @param pos map tile position.
** @param mask Mask for movement to apply.
**
** @return True if could be entered, false otherwise.
*/
bool CheckedCanMoveToMask(const Vec2i &pos, int mask)
{
return Map.Info.IsPointOnMap(pos) && CanMoveToMask(pos, mask);
}
