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Simplify building overlap calculations significantly 

Fixes #1824
develop
lethosor 2021-04-14 00:59:43 -04:00
parent 7b1d7a7ff9
commit e4de302048
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GPG Key ID: 76A269552F4F58C1
1 changed files with 8 additions and 54 deletions
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62
plugins/dwarfvet.cpp
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@ -277,62 +277,16 @@ void AnimalHospital::calculateHospital(bool force, color_ostream &out) {
// NOTE: under some conditions, this generates a false warning. Not a lot I can do about it
// Mark spots used by that building as used; FIXME: handle special logic for traction benches and such
int building_offset_x = building->x1 - this->x1;
int building_offset_y = building->y1 - this->y1;
int building_length = building->x2 - building->x1 + 1;
int building_height = building->y2 - building->y1 + 1;
// Cap the used calculation to only include the part in the hospital
if (this->x1 > building->x1) {
building_offset_x -= (this->x1 - building->x1);
}
if (this->y1 > building->y1) {
building_offset_y -= (building->y1 - this->y1);
}
if ((this->x2 < building->x2) && building_offset_x) {
building_length -= (this->x2 - building->x2) + 1;
}
if ((this->y2 < building->y2) && building_offset_y) {
building_height = (building->y2 - this->y2) + 1;
}
// Quick explination, if a building is north or east of the activity zone,
// we get a negative offset, we'll just skip those lines below. If its
// south or west, we make the building length/height lower to compinsate.
/* if we have a negative x offset, we correct that */
if (building_offset_x < 0) {
building_height += building_offset_x;
building_offset_x = 0;
}
/* Handle negative y offset */
if (building_offset_y < 0) {
building_length += building_offset_y;
building_offset_y = 0;
};
/* Advance the pointer to first row we need to mark */
int spot_cur = 0;
if (building_offset_y) {
spot_cur = (length+1) * building_offset_y;
}
spot_cur += building_offset_x;
/* Start marking! */
for (int i = 0; i < building_height; i++) {
for (int j = 0; j < building_length; j++) {
spots_in_use.at(spot_cur+j) = true;
int overlap_x1 = std::max(building->x1, this->x1);
int overlap_y1 = std::max(building->y1, this->y1);
int overlap_x2 = std::min(building->x2, this->x2);
int overlap_y2 = std::min(building->y2, this->y2);
for (int x = overlap_x1; x <= overlap_x2; x++) {
for (int y = overlap_y1; y <= overlap_y2; y++) {
int spot_index = (x - this->x1) + (this->length * (y - this->y1));
spots_in_use.at(spot_index) = true;
}
// Wind the cursor to the start of the next row
spot_cur += length+1;
}
// *phew*, done. Now repeat the process for the next building!
}
}