E:/project/Anoria2/bigworld/anoria/res/scripts/common/gamesys/Combat.py

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''' 
    Combat.py 
    game system combat code 

    Anoria (c) Gsk 2010
'''
    
import BigWorld
import ProcTimer
import time
import random

from attktab import AttackTable
from consts import *

               
class CombatResolver():
    
    def __init__(self, id, hostEntity):
        self.id = id
        self.hostEntity = hostEntity
        self.attackTable = AttackTable()
        self.weaponSlots = {}
        self.procTimer = ProcTimer.ProcTimer()
                
    def update(self):
        self.procTimer.update() # tick the proctimer
        
    def setTargetId(self, targetId):
        try:
            targetEntity = BigWorld.entities[targetId]
            # need to rebuild the attack table whenever the target changes
            self.attackTable.buildTable(self.hostEntity.characterSkills, targetEntity.characterSkills)
        except:
            print "CombatResolver.setTargetId(): invalid targetId=%d, cant build AttackTable" % (targetId)

             
    def equipWeapon(self, weapon, slot):
        ''' Equipping a weapon on a given slot of the combat resolver
            @param weapon the Resources.itemDef of the weapon
            @param slot is the combat resolver slot to equip '''
        # print 'CombatResolver equipping weapon %s on slot %d' % (weapon.id, slot)
        self.weaponSlots[slot] = weapon

    def removeWeapon(self, slot):
        del self.weaponSlots[slot]
        
    def startSlot(self, slot):
        try:
            weapon = self.weaponSlots[slot]
        except:
            print 'CombatResolver cant startSlot=%d: no weapon equiped' % (slot)
            return
        
        self.procTimer.addProc(slot, weapon.dly, self.doWeaponAttack)

    def stopSlot(self, slot):
        try:
            self.procTimer.delProc(slot)
        except:
            print 'CombatResolver cant stopSlot=%d: no weapon equiped' % (slot)
    
    # callback
    # called on every proc, i.e when one of our weapons "swing"
    # procId is the weapon slot we passed in to addProc()
    def doWeaponAttack(self, slot):
        # melee combat implementation
        dmg = 0
        hitType = self.attackTable.getHit()
        if hitType in [HIT_TYPE_NORMAL, HIT_TYPE_CRIT, HIT_TYPE_CRUSH]:
            dmg = self.determineWeaponDamage(slot, hitType)
        
        # notify our client (the Mob object) 
        # that one of the equipped weapons has just performed an attack and pass the result
        self.hostEntity.onWeaponAttackPerformed(hitType, dmg)   
    
    def determineWeaponDamage(self, slot, hitType):
        weapon = self.weaponSlots[slot]
        baseDmg = weapon.dmg
        lim = baseDmg/2
        dmg = random.randint(baseDmg-lim, baseDmg+lim) * HIT_MULTIPLIER[hitType]
        return dmg