/**
* Returns change in battle strength if unit at region switches places with neighbor.
*
* @param region
* @param neighbor
* @param includeNeighborStrengthChange true if change in neighbor strength should be included
* @return
*/
private static float getBattleStrengthChange(
Region region, Neighbor neighbor, boolean includeNeighborStrengthChange) {
// get current strengths of region, neighbor
float regionStrength = RegionUtils.getRegionBattleStrength(region);
float neighborStrength = RegionUtils.getRegionBattleStrength(neighbor.region);
// swap units, see change in strengths
Unit tempUnit = region.unit;
region.unit = neighbor.region.unit;
neighbor.region.unit = tempUnit;
Player tempPlayer = region.player;
region.player = neighbor.region.player;
neighbor.region.player = tempPlayer;
float regionMoveStrength = RegionUtils.getRegionBattleStrength(region);
float neighborMoveStrength = RegionUtils.getRegionBattleStrength(neighbor.region);
// put units back
tempUnit = region.unit;
region.unit = neighbor.region.unit;
neighbor.region.unit = tempUnit;
tempPlayer = region.player;
region.player = neighbor.region.player;
neighbor.region.player = tempPlayer;
if (includeNeighborStrengthChange) {
return (regionMoveStrength + neighborMoveStrength - regionStrength - neighborStrength + 2)
/ 4;
} else {
return (regionMoveStrength - regionStrength + 1) / 2;
}
}
/**
* Returns changes in region strengths for each possible move.
*
* @param region
* @return
*/
protected static Map<Neighbor, Float> checkMoves(Region region) {
Map<Neighbor, Float> result = new HashMap<Neighbor, Float>();
for (Neighbor neighbor : region.neighbors) {
// check if neighbor can be moved to
if (RegionUtils.canMove(region, neighbor)) {
// get current strengths of region, neighbor
float regionStrength = RegionUtils.getRegionBattleStrength(region);
float neighborStrength = RegionUtils.getRegionBattleStrength(neighbor.region);
// swap units, see change in strengths
Unit tempUnit = region.unit;
region.unit = neighbor.region.unit;
neighbor.region.unit = tempUnit;
Player tempPlayer = region.player;
region.player = neighbor.region.player;
neighbor.region.player = tempPlayer;
float regionMoveStrength = RegionUtils.getRegionBattleStrength(region);
float neighborMoveStrength = RegionUtils.getRegionBattleStrength(neighbor.region);
// put units back
tempUnit = region.unit;
region.unit = neighbor.region.unit;
neighbor.region.unit = tempUnit;
tempPlayer = region.player;
region.player = neighbor.region.player;
neighbor.region.player = tempPlayer;
result.put(
neighbor,
regionMoveStrength + neighborMoveStrength - regionStrength - neighborStrength);
}
}
return result;
}
