boolean roadTest(int tx, int ty) {
if (!city.testBounds(tx, ty)) {
return false;
}
char c = city.getTile(tx, ty);
if (c < ROADBASE) return false;
else if (c > LASTRAIL) return false;
else if (c >= POWERBASE && c < LASTPOWER) return false;
else return true;
}
void setTrafficMem() {
while (!positions.isEmpty()) {
CityLocation pos = positions.pop();
mapX = pos.x;
mapY = pos.y;
assert city.testBounds(mapX, mapY);
// check for road/rail
int tile = city.getTile(mapX, mapY);
if (tile >= ROADBASE && tile < POWERBASE) {
city.addTraffic(mapX, mapY, 50);
}
}
}
boolean driveDone() {
int low, high;
switch (sourceZone) {
case RESIDENTIAL:
low = COMBASE;
high = NUCLEAR;
break;
case COMMERCIAL:
low = LHTHR;
high = PORT;
break;
case INDUSTRIAL:
low = LHTHR;
high = COMBASE;
break;
default:
throw new Error("unreachable");
}
if (mapY > 0) {
int tile = city.getTile(mapX, mapY - 1);
if (tile >= low && tile <= high) return true;
}
if (mapX + 1 < city.getWidth()) {
int tile = city.getTile(mapX + 1, mapY);
if (tile >= low && tile <= high) return true;
}
if (mapY + 1 < city.getHeight()) {
int tile = city.getTile(mapX, mapY + 1);
if (tile >= low && tile <= high) return true;
}
if (mapX > 0) {
int tile = city.getTile(mapX - 1, mapY);
if (tile >= low && tile <= high) return true;
}
return false;
}