void CvMapGenerator::eraseRivers()
{
for (int i = 0; i < GC.getMapINLINE().numPlotsINLINE(); i++)
{
CvPlot* pPlot = GC.getMapINLINE().plotByIndexINLINE(i);
if (pPlot->isNOfRiver())
{
pPlot->setNOfRiver(false, NO_CARDINALDIRECTION);
}
if (pPlot->isWOfRiver())
{
pPlot->setWOfRiver(false, NO_CARDINALDIRECTION);
}
}
}
// pStartPlot = the plot at whose SE corner the river is starting
//
void CvMapGenerator::doRiver(CvPlot *pStartPlot, CardinalDirectionTypes eLastCardinalDirection, CardinalDirectionTypes eOriginalCardinalDirection, int iThisRiverID)
{
if (iThisRiverID == -1)
{
iThisRiverID = GC.getMapINLINE().getNextRiverID();
GC.getMapINLINE().incrementNextRiverID();
}
int iOtherRiverID = pStartPlot->getRiverID();
if (iOtherRiverID != -1 && iOtherRiverID != iThisRiverID)
{
return; // Another river already exists here; can't branch off of an existing river!
}
CvPlot *pRiverPlot = NULL;
CvPlot *pAdjacentPlot = NULL;
CardinalDirectionTypes eBestCardinalDirection = NO_CARDINALDIRECTION;
if (eLastCardinalDirection==CARDINALDIRECTION_NORTH)
{
pRiverPlot = pStartPlot;
if (pRiverPlot == NULL)
{
return;
}
pAdjacentPlot = plotCardinalDirection(pRiverPlot->getX_INLINE(), pRiverPlot->getY_INLINE(), CARDINALDIRECTION_EAST);
if ((pAdjacentPlot == NULL) || pRiverPlot->isWOfRiver() || pRiverPlot->isWater() || pAdjacentPlot->isWater())
{
return;
}
pStartPlot->setRiverID(iThisRiverID);
pRiverPlot->setWOfRiver(true, eLastCardinalDirection);
pRiverPlot = plotCardinalDirection(pRiverPlot->getX_INLINE(), pRiverPlot->getY_INLINE(), CARDINALDIRECTION_NORTH);
}
else if (eLastCardinalDirection==CARDINALDIRECTION_EAST)
{
pRiverPlot = plotCardinalDirection(pStartPlot->getX_INLINE(), pStartPlot->getY_INLINE(), CARDINALDIRECTION_EAST);
if (pRiverPlot == NULL)
{
return;
}
pAdjacentPlot = plotCardinalDirection(pRiverPlot->getX_INLINE(), pRiverPlot->getY_INLINE(), CARDINALDIRECTION_SOUTH);
if ((pAdjacentPlot == NULL) || pRiverPlot->isNOfRiver() || pRiverPlot->isWater() || pAdjacentPlot->isWater())
{
return;
}
pStartPlot->setRiverID(iThisRiverID);
pRiverPlot->setNOfRiver(true, eLastCardinalDirection);
}
else if (eLastCardinalDirection==CARDINALDIRECTION_SOUTH)
{
pRiverPlot = plotCardinalDirection(pStartPlot->getX_INLINE(), pStartPlot->getY_INLINE(), CARDINALDIRECTION_SOUTH);
if (pRiverPlot == NULL)
{
return;
}
pAdjacentPlot = plotCardinalDirection(pRiverPlot->getX_INLINE(), pRiverPlot->getY_INLINE(), CARDINALDIRECTION_EAST);
if ((pAdjacentPlot == NULL) || pRiverPlot->isWOfRiver() || pRiverPlot->isWater() || pAdjacentPlot->isWater())
{
return;
}
pStartPlot->setRiverID(iThisRiverID);
pRiverPlot->setWOfRiver(true, eLastCardinalDirection);
}
else if (eLastCardinalDirection==CARDINALDIRECTION_WEST)
{
pRiverPlot = pStartPlot;
if (pRiverPlot == NULL)
{
return;
}
pAdjacentPlot = plotCardinalDirection(pRiverPlot->getX_INLINE(), pRiverPlot->getY_INLINE(), CARDINALDIRECTION_SOUTH);
if ((pAdjacentPlot == NULL) || pRiverPlot->isNOfRiver() || pRiverPlot->isWater() || pAdjacentPlot->isWater())
{
return;
}
pStartPlot->setRiverID(iThisRiverID);
pRiverPlot->setNOfRiver(true, eLastCardinalDirection);
pRiverPlot = plotCardinalDirection(pRiverPlot->getX_INLINE(), pRiverPlot->getY_INLINE(), CARDINALDIRECTION_WEST);
}
else
{
//FAssertMsg(false, "Illegal direction type");
// River is starting here, set the direction in the next step
pRiverPlot = pStartPlot;
long result = 0;
if (gDLL->getPythonIFace()->pythonGetRiverStartCardinalDirection(pRiverPlot, &result) && !gDLL->getPythonIFace()->pythonUsingDefaultImpl()) // Python override
{
if (result >= 0)
{
eBestCardinalDirection = ((CardinalDirectionTypes)result);
}
else
{
FAssertMsg(false, "python pythonGetRiverStartCardinalDirection() must return >= 0");
}
}
}
if (pRiverPlot == NULL)
{
return; // The river has flowed off the edge of the map. All is well.
}
else if (pRiverPlot->hasCoastAtSECorner())
{
return; // The river has flowed into the ocean. All is well.
}
if (eBestCardinalDirection == NO_CARDINALDIRECTION)
{
int iBestValue = MAX_INT;
for (int iI = 0; iI < NUM_CARDINALDIRECTION_TYPES; iI++)
{
if (getOppositeCardinalDirection((CardinalDirectionTypes)iI) != eOriginalCardinalDirection)
{
if (getOppositeCardinalDirection((CardinalDirectionTypes)iI) != eLastCardinalDirection)
{
CvPlot* pAdjacentPlot;
pAdjacentPlot = plotCardinalDirection(pRiverPlot->getX_INLINE(), pRiverPlot->getY_INLINE(), ((CardinalDirectionTypes)iI));
if (pAdjacentPlot != NULL)
{
int iValue = getRiverValueAtPlot(pAdjacentPlot);
if (iValue < iBestValue)
{
iBestValue = iValue;
eBestCardinalDirection = (CardinalDirectionTypes)iI;
}
}
}
}
}
}
if (eBestCardinalDirection != NO_CARDINALDIRECTION)
{
if (eOriginalCardinalDirection == NO_CARDINALDIRECTION)
{
eOriginalCardinalDirection = eBestCardinalDirection;
}
doRiver(pRiverPlot, eBestCardinalDirection, eOriginalCardinalDirection, iThisRiverID);
}
}
