Grimrock

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-- Common hook for all items if food category 
	fw.addHooks('items_food','insectoids_dont_eat_food',{
		onUseItem = function(self,champion)
			if champion:getRace() == 'Insectoid' then
				hudPrint("Yarrrgghh! I dont't "..self:getUIName().." you fool!")
				return false
			end
		end
	})	

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illusion_walls.activeWalls[wall.id] = wall

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if not findEntity(wall.id.."_fake") then
     spawn(wall.name.."_fake", wall.level, wall.x, wall.y, wall.facing, wall.id.."_fake")
end

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-- returns an iterator which iterates all entities at level filtered by names-list. 
-- If level is not defined, entites at party.level are iterated
-- Examples: 
-- for entity in help.iEntitiesByName('snail',1) do
--		print(entity.id)
-- end	
-- 
-- for entity in help.iEntitiesByName({'snail','crowern'}) do ...

function iEntitiesByName (names,level)
	if type(names) == 'string' then names = {names} end
	level = level or party.level
	local allEntsIt = allEntities(level)
	names = help.tableToSet(names)	
	local iter = function()
		local nextEnt = allEntsIt() 
		while nextEnt do 
			if names[nextEnt.name] then
				return nextEnt
			end
			nextEnt = allEntsIt()
		end	
	end
	return iter
end

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createSpell(
	{
	   name = "hold_monster",
	   uiName = "Hold monster",
	   skill = "spellcraft",
	   level = 0,
	   runes = "AC",
	   manaCost = 15,
	}
)
createSpell(
	{
	   name = "magic_missile",
	   uiName = "Magic missile",
	   skill = "fire_magic",
	   level = 0,
	   runes = "AD",
	   manaCost = 15,
	}
)

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activeSpells = {}

immunityList = {}
immunityList.hold_monster = {
	skeleton_archer=true,
	skeleton_warrior=true
}
	
function activate()	
	addSpell('hold_monster',holdMonster)
	addSpell('magic_missile',magicMissile)
end

function addSpell(spellName,hookFunction)
	fw.addHooks(spellName,'fw_spells',{
			onCast = hookFunction
		}
	)
end

function magicMissile(champ, x, y, direction, skill)
	local dx,dy = getForward(party.facing)
	playSoundAt("fireball_launch",party.level,party.x,party.y)
	shootProjectile('magic_missile', party.level, party.x+dx, party.y+dy, direction, 14, 0, 0, 0, 0, 0, skill*5, nil, true)
	
end

function shootSpell(fx,dir,speed)
 local timer = spawn('timer',party.level,0,0,0)
 
end

function holdMonster(champ, x, y, direction, skill)
	local holdMonster = function() return false end
	
	local monster = help.nextEntityAheadOf(party,3,'monster')
	if not monster then return false end
	if immunityList.hold_monster[monster.name] then return false end
	local timerId = createSpellTimer(monster,10+skill,'holdMonsterDestructor')
	playSoundAt("frostbolt_launch",party.level,party.x,party.y)
	
	fw.debugPrint(monster.id..' held')
       --dynamically add hooks which prevents monster to attack or move	
	-- use spellId as hook-id so the hook can be removed on destructor
	fw.addHooks(monster.id,timerId,{
		onMove = holdMonster,
		onAttack = holdMonster,
		onRangedAttack = holdMonster,
		onTurn = holdMonster
	},
	1)
	return true
end

function holdMonsterDestructor(timer)
	fw.removeHooks(activeSpells[timer.id],timer.id)
	fw.debugPrint(activeSpells[timer.id]..' unheld')
	timer:deactivate()
	timer:destroy()

end

-- creates a  spell timer
-- entity = affected entity, 
-- time = how many seconds spells effect  lasts 
-- destructorName = name of the function which is called when the effect of the spell is worn out.
-- returns id of timer
function createSpellTimer(entity,time,destructorName)
	local timer = spawn('timer',party.level,0,0,0)
	timer:setTimerInterval(time)
	-- store entity.id to table indexed by timer.id so we can access it in spell-destructor
	activeSpells[timer.id] = entity.id
	timer:addConnector('activate','fw_spells',destructorName)
	timer:activate()
	return timer.id
end

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defineObject{
		name = "magic_missile",
		class = "Item",
		uiName = "Magic missile",
		model = "assets/models/items/quarrel.fbx", --assets/models/items/arrow.fbx
		--ammoType = "arrow",
		gfxIndex = 109,
		attackPower = 1,
		impactSound = "fireball_hit",
		particleEffect = "magic_missile",
		stackable = false,
		sharpProjectile = false,
		projectileRotationY = 90,
		weight = 0.1,
}
defineParticleSystem{
	name = "magic_missile",
	emitters = {
		-- flames
		{
			emissionRate = 50,
			emissionTime = 0,
			maxParticles = 50,
			boxMin = {-0.0, -0.0, 0.0},
			boxMax = { 0.0, 0.0,  -0.0},
			sprayAngle = {0,360},
			velocity = {0.3, 0.3},
			texture = "assets/textures/particles/torch_flame.tga",
			frameRate = 35,
			frameSize = 64,
			frameCount = 16,
			lifetime = {0.8, 0.8},
			colorAnimation = true,
			color0 = {1, 1, 1},
			opacity = 1,
			fadeIn = 0.15,
			fadeOut = 0.3,
			size = {0.125, 0.25},
			gravity = {0,0,0},
			airResistance = 1,
			rotationSpeed = 1,
			blendMode = "Additive",
			objectSpace = true,
		},

		-- glow
		{
			spawnBurst = true,
			emissionRate = 1,
			emissionTime = 0,
			maxParticles = 1,
			boxMin = {0,0,-0.1},
			boxMax = {0,0,-0.1},
			sprayAngle = {0,30},
			velocity = {0,0},
			texture = "assets/textures/particles/glow.tga",
			lifetime = {1000000, 1000000},
			colorAnimation = false,
			color0 = {1, 1, 1},
			opacity = 1,
			fadeIn = 0.1,
			fadeOut = 0.1,
			size = {0.8, 0.8},
			gravity = {0,0,0},
			airResistance = 1,
			rotationSpeed = 2,
			blendMode = "Additive",
			objectSpace = true,
		}
	}
}