Grimrock

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--[[
Diarmuid's Goromorg Shield script, Version 1.1

Changelog:
1.1 Shield visual effect now moves along if monster moves
	Shield sound effect is now played at monster's location
	Simplified monster properties table
1.0 Initial release

Readme:
Add the following hooks to your monster(s):
	onDamage = function(self,damage,type)
		return damageTracker.shield(self,damage)
	end,
	
	onMove = function(self, direction)
		return damageTracker.createMoveTimer(self, direction)
	end,
	
	onDie = function(self)
		return damageTracker.clear(self)
	end,
	
Then define the monster(s) in monstersTable below using the following properties:

shield: sets how much damage the shield can take before breaking
immunity: "fire", "frost", "poison", "shock" or "none"
	(If elemental, you will get a "0" over the monster, if "none", just the shield visual)
shieldVAlign: adjusts the shield effect vertical alignment. Positive values go upwards.
shieldSize: adjusts the size of the shield effect. Values below 1 = smaller, above 1 = larger.
moveSpeed: adjusts the speed at which the shield moves with monster. Values below 1 = slower, above 1 = faster.
	
]]

damageTable = {}

timersTable = {}

monstersTable = {
	white_goromorg = {
		shield = 300,
		immunity = "cold",
		shieldVAlign = 0,
		shieldSize = 1,
		moveSpeed = 1,
	},
}


function shield(monster, damage)
	if damage > 0 then
		local shieldActive = false
		if damageTable[monster.id] == nil then
			damageTable[monster.id] = damage
			shieldActive = true
		elseif damageTable[monster.id] < monstersTable[monster.name].shield then
			damageTable[monster.id] = damageTable[monster.id] + damage
			shieldActive = true
		end
		if shieldActive == true then
			
			if monstersTable[monster.name].immunity ~= 'none' then
				damageTile(monster.level, monster.x, monster.y, monster.facing, 0, monstersTable[monster.name].immunity,0)
			end
			
			local fxId = monster.id..".shield"
			if findEntity(fxId) ~= nil then
				findEntity(fxId):destroy()
			end
			spawn("fx", monster.level, monster.x, monster.y, monster.facing,fxId)
			findEntity(fxId):setParticleSystem("shield_glow")
			local dx,dy = getForward(party.facing)
			local shieldSize = monstersTable[monster.name].shieldSize
			local shieldVAlign = monstersTable[monster.name].shieldVAlign
			findEntity(fxId):translate(-dx*0.6*shieldSize,shieldVAlign,dy*0.6*shieldSize)
			
			local timerId = monster.id..'.moveTimer'
			if findEntity(timerId) ~= nil then
				local mx, my = getForward(timersTable[timerId].direction)
				local moveSpeed = monstersTable[monster.name].moveSpeed
				local x, y = unpack(timersTable[timerId].position)
				findEntity(fxId):translate(mx*0.2*timersTable[timerId].tick*moveSpeed,0,-my*0.2*timersTable[timerId].tick*moveSpeed)
				if x ~= monster.x or y ~= monster.y then
					print("Translated")
					findEntity(fxId):translate(-mx*3,0,my*3)
				end
			end
			if damageTable[monster.id] < monstersTable[monster.name].shield then
				playSoundAt("goromorg_shield_hit", monster.level, monster.x, monster.y)
			else
				playSoundAt("goromorg_shield_break", monster.level, monster.x, monster.y)
			end
			
			return false
		end
		return damage
	end
end

function clear(monster)
	damageTable[monster.id] = 0
	local fxId = monster.id..".shield"
	if findEntity(fxId) ~= nil then
		findEntity(fxId):destroy()
	end
end

function createMoveTimer(monster, direction)
	local level, x, y = monster.level, monster.x, monster.y
	local timerId = monster.id..'.moveTimer'
	if findEntity(timerId) ~= nil then
		findEntity(timerId):destroy()
	end
	local moveTimer = spawn('timer', level, x, y, 0, timerId)
	moveTimer:addConnector('activate', 'damageTracker', 'moveTimer')
	moveTimer:setTimerInterval(0.05)
	moveTimer:activate()
	timersTable[timerId] = {}
	timersTable[timerId].id = monster.id
	timersTable[timerId].direction = direction
	timersTable[timerId].position = {x, y}
end

function moveTimer(self)
	timerId = self.id
	if timersTable[timerId].tick == nil then
		timersTable[timerId].tick = 0
	end
	timersTable[timerId].tick = timersTable[timerId].tick + 1
	fxId = timersTable[timerId].id..'.shield'
	if findEntity(fxId) ~= nil then
		local dx, dy = getForward(timersTable[timerId].direction)
		local monster = findEntity(timersTable[timerId].id)
		local moveSpeed = monstersTable[monster.name].moveSpeed
		findEntity(fxId):translate(dx*0.2*moveSpeed,0,-dy*0.2*moveSpeed)
	end
	if timersTable[timerId].tick ==  15 then
		timersTable[timerId].tick = 0 
		self:destroy()
	end
end

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	onDamage = function(self,damage,type)
		return damageTracker.shield(self,damage)
	end,
	
	onMove = function(self, direction)
		return damageTracker.createMoveTimer(self, direction)
	end,
	
	onDie = function(self)
		return damageTracker.clear(self)
	end,

Code: Select all

defineParticleSystem{
	name = "shield_glow",
	emitters = {

		-- outer glow
		{
			spawnBurst = true,
			emissionRate = 1,
			emissionTime = 0,
			maxParticles = 1,
			boxMin = {0,1.1,0},
			boxMax = {0,1.1,0},
			sprayAngle = {0,0},
			velocity = {0,0},
			texture = "mod_assets/textures/particles/goromorg_shield_particle.tga",
			lifetime = {0.7, 0.7},
			colorAnimation = false,
			color0 = {2, 2, 2},
			opacity = 0.5,
			fadeIn = 0.1,
			fadeOut = 0.1,
			size = {2.6, 2.6},
			gravity = {0,0,0},
			airResistance = 1,
			rotationSpeed = 0,
			blendMode = "Additive",
			depthBias = -0.0005,
			objectSpace = true,
		}
	}
}