// Add a gateway to the system
bool gwNewGateway(SDWORD x1, SDWORD y1, SDWORD x2, SDWORD y2)
{
GATEWAY *psNew;
SDWORD pos, temp;
ASSERT_OR_RETURN(false, x1 >= 0 && x1 < gwMapWidth() && y1 >= 0 && y1 < gwMapHeight()
&& x2 >= 0 && x2 < gwMapWidth() && y2 >= 0 && y2 < gwMapHeight()
&& (x1 == x2 || y1 == y2), "Invalid gateway coordinates (%d, %d, %d, %d)",
x1, y1, x2, y2);
psNew = (GATEWAY*)malloc(sizeof(GATEWAY));
// make sure the first coordinate is always the smallest
if (x2 < x1)
{
// y is the same, swap x
temp = x2;
x2 = x1;
x1 = temp;
}
else if (y2 < y1)
{
// x is the same, swap y
temp = y2;
y2 = y1;
y1 = temp;
}
// Initialise the gateway, correct out-of-map gateways
psNew->x1 = MAX(3, x1);
psNew->y1 = MAX(3, y1);
psNew->x2 = MIN(x2, mapWidth - 4);
psNew->y2 = MIN(y2, mapHeight - 4);
// add the gateway to the list
psNew->psNext = psGateways;
psGateways = psNew;
// set the map flags
if (psNew->x1 == psNew->x2)
{
// vertical gateway
for(pos = psNew->y1; pos <= psNew->y2; pos++)
{
gwSetGatewayFlag(psNew->x1, pos);
}
}
else
{
// horizontal gateway
for(pos = psNew->x1; pos <= psNew->x2; pos++)
{
gwSetGatewayFlag(pos, psNew->y1);
}
}
return true;
}
// Add a gateway to the system
bool gwNewGateway(SDWORD x1, SDWORD y1, SDWORD x2, SDWORD y2)
{
GATEWAY *psNew;
SDWORD pos, temp;
if ((x1 < 0) || (x1 >= gwMapWidth()) ||
(y1 < 0) || (y1 >= gwMapHeight()) ||
(x2 < 0) || (x2 >= gwMapWidth()) ||
(y2 < 0) || (y2 >= gwMapHeight()) ||
((x1 != x2) && (y1 != y2)))
{
ASSERT( false,"gwNewGateway: invalid coordinates" );
return false;
}
psNew = (GATEWAY*)malloc(sizeof(GATEWAY));
if (!psNew)
{
debug( LOG_FATAL, "gwNewGateway: out of memory" );
abort();
return false;
}
// make sure the first coordinate is always the smallest
if (x2 < x1)
{
// y is the same, swap x
temp = x2;
x2 = x1;
x1 = temp;
}
else if (y2 < y1)
{
// x is the same, swap y
temp = y2;
y2 = y1;
y1 = temp;
}
// Initialise the gateway, correct out-of-map gateways
psNew->x1 = MAX(3, x1);
psNew->y1 = MAX(3, y1);
psNew->x2 = MIN(x2, mapWidth - 4);
psNew->y2 = MIN(y2, mapHeight - 4);
// add the gateway to the list
psNew->psNext = psGateways;
psGateways = psNew;
// set the map flags
if (psNew->x1 == psNew->x2)
{
// vertical gateway
for(pos = psNew->y1; pos <= psNew->y2; pos++)
{
gwSetGatewayFlag(psNew->x1, pos);
}
}
else
{
// horizontal gateway
for(pos = psNew->x1; pos <= psNew->x2; pos++)
{
gwSetGatewayFlag(pos, psNew->y1);
}
}
return true;
}