Scripting: Monster only gets demaged by one special weappon

[Leki]

to complicated I guess...

I prefer method to make clone party with onAttack hook, and on attack check tile(s) by entitiesAt(party.level, party.x+party.dir, party.y+party.dir) - in front of the party and compare used weapon with monster(objects) on tile(s). You can define weapons in array, if you wanna make more effective weapons. If it does not match, return false, so weapon/item is unefective. If it mach, do damage.
In other word, on attack, get monster in front of party, then interate through ifs with monsters and if it matches, check if one of defined weapons matches weapon used onAttack, then return true. No isues with death effects, skills, exp etc.
You can do the same in onUseItem hook, for special items (I mean no weapons - to break walls etc.) You can also check party.x+party.dir, party.y+party.dir, to check if item/weapon is used on right dungeon position etc. In hooks designed in this way, you can define all combinations you need.

btw, monster:destroy(); does not call "monster death particle effect" - it removes monster from game and thats all - so you must use damageTile or play with invisible projectiles to achieve what you need.

Please someone write the party script I described, I'm in hurry.

[THOM]

I am still not sure, if I got everything right.

My biggest question at the moment is, how to do a damage-script. What I want is to reduce health-points by a certain amount (lets say 100). Not killing immediatly.

[Leki]

forget that "-100 HP damage idea", it's not good solution, because propper method to calculate damage is mix of weapon power, character stats and skills, monster defence etc... use smth like this for melee weapons in custom party definition, in onAttack hook:

Code: Select all

function party_onAttack(champion, weapon)
	-- weapon efficiencies tests
		-- define locals
		local dx,dy = 0,0
		local usedWeapon
		
		-- manage case that attack is unarmed
		if weapon == nil then usedWeapon = "unarmed"
		else usedWeapon = weapon.name
		end
		
		-- get position modificators, to find cell in front of the party
		if party.facing == 0 then dy = -1
		elseif party.facing == 1 then dx = 1
		elseif party.facing == 2 then dy = 1
		elseif party.facing == 3 then dx = -1
		end

		-- check what is in front of the party		
		local checkedCell = entitiesAt(party.level, party.x + dx, party.y + dy)
		-- interate through all objects on cell
		for object in checkedCell do 
			if object.class == "Monster" then -- it will do test only for monsters
				if monster.name == "snail" then -- here you can define monsters (you can use OR, or define array for more monsters and go through the array)
					if usedWeapon == "long_sword" then -- here is test if champion used effextive weapon (you can use OR, or array for more weapons) 
						return true -- weapons is effective, attack will by computed (weapon power, character skills, monster defence etc)
					else
						return false -- weapon is uneffective, you can write 
					end
				end
			else
				return true
			end
		end
end

for ranged weapons use onProjectileHit hook in monster definition: check the projectile which hits the monster and if it's name is i.e. "poison_arrow", then return true, else false and you have what you need.
P.S I wrote that script without tests, so guys, if you can, please chcek it for sure or rewrite it etc...[/color]

[THOM]

Nope.
I made a clone party object. What I get is, that I can use a weapon on other monsters, but when I attack my special-monster with some weapon (not my special weapon) the whole editor crashes...
The same, when I use my weapon on my monster...

Code: Select all

cloneObject{
   name = "party",
   baseObject = "party",
   onAttack = function (champion, weapon)
       -- weapon efficiencies tests
          -- define locals
          local dx,dy = 0,0
          local usedWeapon
          
          -- manage case that attack is unarmed
          if weapon == nil then usedWeapon = "unarmed"
          else usedWeapon = weapon.name
          end
          
          -- get position modificators, to find cell in front of the party
          if party.facing == 0 then dy = -1
          elseif party.facing == 1 then dx = 1
          elseif party.facing == 2 then dy = 1
          elseif party.facing == 3 then dx = -1
          end

          -- check what is in front of the party      
          local checkedCell = entitiesAt(party.level, party.x + dx, party.y + dy)
          -- interate through all objects on cell
          for object in checkedCell do
             if object.class == "Monster" then -- it will do test only for monsters
                if monster.name == "ghost" then 
                   if usedWeapon == "dm_vorpalblade" then 
                      return true -- weapons is effective, attack will by computed
                   else
                      return false -- weapon is uneffective, you can write
                   end
                end
             else
                return true
             end
          end
end,
}

[Leki]

As I said, it was not tested and the bug is typo. Sorry for that -but you should find it by yourself

replace:

Code: Select all

if monster.name == "ghost"

with

Code: Select all

if object.name == "ghost"

in general, use

Code: Select all

cloneObject{
name = "party",
baseObject = "party",
onAttack = function(champion, weapon)
     return hooks.party_onAttack(champion, weapon);
     end,
}

and then add script_entity named hooks into editor with function party_onAttack(champion, weapon) , it will stop in script entity and prevent crashes. If it works, then you can move script into clone party.
[/color]

[THOM]

yep - it works.

I've added a sound effect to the false-case and now it's a cool game-part.

thanx - i would never had figured that out by my own...