371 lines
14 KiB
Python
371 lines
14 KiB
Python
# =============================================================================
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# Copyright (C) 2010 Diego Duclos
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#
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# This file is part of pyfa.
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#
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# pyfa is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# pyfa is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with pyfa. If not, see <http://www.gnu.org/licenses/>.
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# =============================================================================
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import math
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from functools import lru_cache
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from eos.const import FittingHardpoint
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from eos.utils.float import floatUnerr
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from service.const import GraphDpsDroneMode
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from service.settings import GraphSettings
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def getApplicationPerKey(src, tgt, atkSpeed, atkAngle, distance, tgtSpeed, tgtAngle, tgtSigRadius):
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applicationMap = {}
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for mod in src.item.modules:
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if not mod.isDealingDamage():
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continue
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if mod.hardpoint == FittingHardpoint.TURRET:
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applicationMap[mod] = getTurretMult(
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mod=mod,
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src=src,
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tgt=tgt,
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atkSpeed=atkSpeed,
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atkAngle=atkAngle,
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distance=distance,
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tgtSpeed=tgtSpeed,
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tgtAngle=tgtAngle,
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tgtSigRadius=tgtSigRadius)
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elif mod.hardpoint == FittingHardpoint.MISSILE:
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applicationMap[mod] = getLauncherMult(
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mod=mod,
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src=src,
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distance=distance,
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tgtSpeed=tgtSpeed,
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tgtSigRadius=tgtSigRadius)
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elif mod.item.group.name in ('Smart Bomb', 'Structure Area Denial Module'):
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applicationMap[mod] = getSmartbombMult(
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mod=mod,
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distance=distance)
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elif mod.item.group.name == 'Missile Launcher Bomb':
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applicationMap[mod] = getBombMult(
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mod=mod,
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src=src,
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tgt=tgt,
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distance=distance,
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tgtSigRadius=tgtSigRadius)
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elif mod.item.group.name == 'Structure Guided Bomb Launcher':
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applicationMap[mod] = getGuidedBombMult(
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mod=mod,
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src=src,
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distance=distance,
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tgtSigRadius=tgtSigRadius)
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elif mod.item.group.name in ('Super Weapon', 'Structure Doomsday Weapon'):
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applicationMap[mod] = getDoomsdayMult(
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mod=mod,
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tgt=tgt,
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distance=distance,
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tgtSigRadius=tgtSigRadius)
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for drone in src.item.drones:
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if not drone.isDealingDamage():
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continue
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applicationMap[drone] = getDroneMult(
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drone=drone,
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src=src,
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tgt=tgt,
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atkSpeed=atkSpeed,
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atkAngle=atkAngle,
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distance=distance,
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tgtSpeed=tgtSpeed,
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tgtAngle=tgtAngle,
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tgtSigRadius=tgtSigRadius)
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for fighter in src.item.fighters:
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if not fighter.isDealingDamage():
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continue
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for ability in fighter.abilities:
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if not ability.dealsDamage or not ability.active:
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continue
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applicationMap[(fighter, ability.effectID)] = getFighterAbilityMult(
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fighter=fighter,
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ability=ability,
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src=src,
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distance=distance,
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tgtSpeed=tgtSpeed,
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tgtSigRadius=tgtSigRadius)
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# Ensure consistent results - round off a little to avoid float errors
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for k, v in applicationMap.items():
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applicationMap[k] = floatUnerr(v)
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return applicationMap
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# Item application multiplier calculation
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def getTurretMult(mod, src, tgt, atkSpeed, atkAngle, distance, tgtSpeed, tgtAngle, tgtSigRadius):
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cth = _calcTurretChanceToHit(
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atkSpeed=atkSpeed,
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atkAngle=atkAngle,
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atkRadius=src.getRadius(),
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atkOptimalRange=mod.maxRange,
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atkFalloffRange=mod.falloff,
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atkTracking=mod.getModifiedItemAttr('trackingSpeed'),
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atkOptimalSigRadius=mod.getModifiedItemAttr('optimalSigRadius'),
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distance=distance,
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tgtSpeed=tgtSpeed,
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tgtAngle=tgtAngle,
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tgtRadius=tgt.getRadius(),
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tgtSigRadius=tgtSigRadius)
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mult = _calcTurretMult(cth)
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return mult
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def getLauncherMult(mod, src, distance, tgtSpeed, tgtSigRadius):
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modRange = mod.maxRange
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if modRange is None:
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return 0
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if distance is not None and distance + src.getRadius() > modRange:
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return 0
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mult = _calcMissileFactor(
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atkEr=mod.getModifiedChargeAttr('aoeCloudSize'),
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atkEv=mod.getModifiedChargeAttr('aoeVelocity'),
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atkDrf=mod.getModifiedChargeAttr('aoeDamageReductionFactor'),
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tgtSpeed=tgtSpeed,
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tgtSigRadius=tgtSigRadius)
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return mult
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def getSmartbombMult(mod, distance):
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modRange = mod.maxRange
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if modRange is None:
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return 0
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if distance is not None and distance > modRange:
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return 0
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return 1
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def getDoomsdayMult(mod, tgt, distance, tgtSigRadius):
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modRange = mod.maxRange
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# Single-target DDs have no range limit
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if distance is not None and modRange and distance > modRange:
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return 0
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# Single-target titan DDs are vs capitals only
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if {'superWeaponAmarr', 'superWeaponCaldari', 'superWeaponGallente', 'superWeaponMinmatar'}.intersection(mod.item.effects):
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# Disallow only against subcaps, allow against caps and tgt profiles
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if tgt.isFit and not tgt.item.ship.item.requiresSkill('Capital Ships'):
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return 0
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damageSig = mod.getModifiedItemAttr('doomsdayDamageRadius') or mod.getModifiedItemAttr('signatureRadius')
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if not damageSig:
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return 1
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return min(1, tgtSigRadius / damageSig)
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def getBombMult(mod, src, tgt, distance, tgtSigRadius):
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modRange = mod.maxRange
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if modRange is None:
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return 0
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blastRadius = mod.getModifiedChargeAttr('explosionRange')
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atkRadius = src.getRadius()
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tgtRadius = tgt.getRadius()
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# Bomb starts in the center of the ship
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# Also here we assume that it affects target as long as blast
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# touches its surface, not center - I did not check this
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if distance is not None and distance < max(0, modRange - atkRadius - tgtRadius - blastRadius):
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return 0
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if distance is not None and distance > max(0, modRange - atkRadius + tgtRadius + blastRadius):
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return 0
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return _calcBombFactor(
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atkEr=mod.getModifiedChargeAttr('aoeCloudSize'),
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tgtSigRadius=tgtSigRadius)
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def getGuidedBombMult(mod, src, distance, tgtSigRadius):
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modRange = mod.maxRange
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if modRange is None:
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return 0
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if distance is not None and distance > modRange - src.getRadius():
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return 0
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eR = mod.getModifiedChargeAttr('aoeCloudSize')
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if eR == 0:
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return 1
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else:
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return min(1, tgtSigRadius / eR)
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def getDroneMult(drone, src, tgt, atkSpeed, atkAngle, distance, tgtSpeed, tgtAngle, tgtSigRadius):
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if distance is not None and distance > src.item.extraAttributes['droneControlRange']:
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return 0
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droneSpeed = drone.getModifiedItemAttr('maxVelocity')
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# Hard to simulate drone behavior, so assume chance to hit is 1 for mobile drones
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# which catch up with target
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droneOpt = GraphSettings.getInstance().get('mobileDroneMode')
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if (
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droneSpeed > 1 and (
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(droneOpt == GraphDpsDroneMode.auto and droneSpeed >= tgtSpeed) or
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droneOpt == GraphDpsDroneMode.followTarget)
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):
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cth = 1
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# Otherwise put the drone into center of the ship, move it at its max speed or ship's speed
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# (whichever is lower) towards direction of attacking ship and see how well it projects
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else:
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droneRadius = drone.getModifiedItemAttr('radius')
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if distance is None:
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cthDistance = None
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else:
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# As distance is ship surface to ship surface, we adjust it according
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# to attacker ship's radiuses to have drone surface to ship surface distance
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cthDistance = distance + src.getRadius() - droneRadius
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cth = _calcTurretChanceToHit(
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atkSpeed=min(atkSpeed, droneSpeed),
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atkAngle=atkAngle,
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atkRadius=droneRadius,
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atkOptimalRange=drone.maxRange,
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atkFalloffRange=drone.falloff,
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atkTracking=drone.getModifiedItemAttr('trackingSpeed'),
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atkOptimalSigRadius=drone.getModifiedItemAttr('optimalSigRadius'),
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distance=cthDistance,
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tgtSpeed=tgtSpeed,
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tgtAngle=tgtAngle,
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tgtRadius=tgt.getRadius(),
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tgtSigRadius=tgtSigRadius)
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mult = _calcTurretMult(cth)
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return mult
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def getFighterAbilityMult(fighter, ability, src, distance, tgtSpeed, tgtSigRadius):
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fighterSpeed = fighter.getModifiedItemAttr('maxVelocity')
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attrPrefix = ability.attrPrefix
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# It's bomb attack
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if attrPrefix == 'fighterAbilityLaunchBomb':
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# Just assume we can land bomb anywhere
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return _calcBombFactor(
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atkEr=fighter.getModifiedChargeAttr('aoeCloudSize'),
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tgtSigRadius=tgtSigRadius)
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droneOpt = GraphSettings.getInstance().get('mobileDroneMode')
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# It's regular missile-based attack
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if (droneOpt == GraphDpsDroneMode.auto and fighterSpeed >= tgtSpeed) or droneOpt == GraphDpsDroneMode.followTarget:
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rangeFactor = 1
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# Same as with drones, if fighters are slower - put them to center of
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# the ship and see how they apply
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else:
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if distance is None:
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rangeFactorDistance = None
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else:
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rangeFactorDistance = distance + src.getRadius() - fighter.getModifiedItemAttr('radius')
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rangeFactor = _calcRangeFactor(
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atkOptimalRange=fighter.getModifiedItemAttr('{}RangeOptimal'.format(attrPrefix)) or fighter.getModifiedItemAttr('{}Range'.format(attrPrefix)),
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atkFalloffRange=fighter.getModifiedItemAttr('{}RangeFalloff'.format(attrPrefix)),
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distance=rangeFactorDistance)
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drf = fighter.getModifiedItemAttr('{}ReductionFactor'.format(attrPrefix), None)
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if drf is None:
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drf = fighter.getModifiedItemAttr('{}DamageReductionFactor'.format(attrPrefix))
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drs = fighter.getModifiedItemAttr('{}ReductionSensitivity'.format(attrPrefix), None)
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if drs is None:
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drs = fighter.getModifiedItemAttr('{}DamageReductionSensitivity'.format(attrPrefix))
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missileFactor = _calcMissileFactor(
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atkEr=fighter.getModifiedItemAttr('{}ExplosionRadius'.format(attrPrefix)),
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atkEv=fighter.getModifiedItemAttr('{}ExplosionVelocity'.format(attrPrefix)),
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atkDrf=_calcAggregatedDrf(reductionFactor=drf, reductionSensitivity=drs),
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tgtSpeed=tgtSpeed,
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tgtSigRadius=tgtSigRadius)
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mult = rangeFactor * missileFactor
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return mult
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# Turret-specific math
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@lru_cache(maxsize=50)
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def _calcTurretMult(chanceToHit):
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"""Calculate damage multiplier for turret-based weapons."""
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# https://wiki.eveuniversity.org/Turret_mechanics#Damage
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wreckingChance = min(chanceToHit, 0.01)
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wreckingPart = wreckingChance * 3
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normalChance = chanceToHit - wreckingChance
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if normalChance > 0:
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avgDamageMult = (0.01 + chanceToHit) / 2 + 0.49
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normalPart = normalChance * avgDamageMult
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else:
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normalPart = 0
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totalMult = normalPart + wreckingPart
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return totalMult
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@lru_cache(maxsize=1000)
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def _calcTurretChanceToHit(
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atkSpeed, atkAngle, atkRadius, atkOptimalRange, atkFalloffRange, atkTracking, atkOptimalSigRadius,
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distance, tgtSpeed, tgtAngle, tgtRadius, tgtSigRadius
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):
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"""Calculate chance to hit for turret-based weapons."""
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# https://wiki.eveuniversity.org/Turret_mechanics#Hit_Math
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angularSpeed = _calcAngularSpeed(atkSpeed, atkAngle, atkRadius, distance, tgtSpeed, tgtAngle, tgtRadius)
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rangeFactor = _calcRangeFactor(atkOptimalRange, atkFalloffRange, distance)
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trackingFactor = _calcTrackingFactor(atkTracking, atkOptimalSigRadius, angularSpeed, tgtSigRadius)
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cth = rangeFactor * trackingFactor
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return cth
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def _calcAngularSpeed(atkSpeed, atkAngle, atkRadius, distance, tgtSpeed, tgtAngle, tgtRadius):
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"""Calculate angular speed based on mobility parameters of two ships."""
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if distance is None:
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return 0
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atkAngle = atkAngle * math.pi / 180
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tgtAngle = tgtAngle * math.pi / 180
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ctcDistance = atkRadius + distance + tgtRadius
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# Target is to the right of the attacker, so transversal is projection onto Y axis
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transSpeed = abs(atkSpeed * math.sin(atkAngle) - tgtSpeed * math.sin(tgtAngle))
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if ctcDistance == 0:
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return 0 if transSpeed == 0 else math.inf
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else:
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return transSpeed / ctcDistance
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def _calcTrackingFactor(atkTracking, atkOptimalSigRadius, angularSpeed, tgtSigRadius):
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"""Calculate tracking chance to hit component."""
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return 0.5 ** (((angularSpeed * atkOptimalSigRadius) / (atkTracking * tgtSigRadius)) ** 2)
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# Missile-specific math
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@lru_cache(maxsize=200)
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def _calcMissileFactor(atkEr, atkEv, atkDrf, tgtSpeed, tgtSigRadius):
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"""Missile application."""
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factors = [1]
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# "Slow" part
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if atkEr > 0:
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factors.append(tgtSigRadius / atkEr)
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# "Fast" part
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if tgtSpeed > 0:
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factors.append(((atkEv * tgtSigRadius) / (atkEr * tgtSpeed)) ** atkDrf)
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totalMult = min(factors)
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return totalMult
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def _calcAggregatedDrf(reductionFactor, reductionSensitivity):
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"""
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Sometimes DRF is specified as 2 separate numbers,
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here we combine them into generic form.
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"""
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return math.log(reductionFactor) / math.log(reductionSensitivity)
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# Generic math
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def _calcRangeFactor(atkOptimalRange, atkFalloffRange, distance):
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"""Range strength/chance factor, applicable to guns, ewar, RRs, etc."""
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if distance is None:
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return 1
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if atkFalloffRange > 0:
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return 0.5 ** ((max(0, distance - atkOptimalRange) / atkFalloffRange) ** 2)
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elif distance <= atkOptimalRange:
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return 1
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else:
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return 0
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def _calcBombFactor(atkEr, tgtSigRadius):
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if atkEr == 0:
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return 1
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else:
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return min(1, tgtSigRadius / atkEr)
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