Grimrock

Posted: **Mon Jun 20, 2016 12:40 am**

(sigh - why are some things THAT complicate... )

Sorry, minmay, doesn't work. Probably, I am doing something wrong.

Does your code mean a) I have to re-define my spell as a projectile b) I have to use your code on an CastSpellComponent? I tried it still in an ItemActionComponent (of course in an onAttack hook).

Posted: **Mon Jun 20, 2016 3:00 am**

Hey THOM,
minmays projectile script is good, I have based mine on that script and have no dramas at all.
I can try and step you through it
First! - paste this into a script entity (dungeon or external) - name it "projectileScripts"

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Code: Select all

projectileSpellCaster = ""
projectileVolleyCount = 0
----------------------------------------------------------------------------------------------------checkwall()

    function checkwall()
       local direction = party.facing
       local x = party.x
       local y = party.y
       local elevation = party.elevation
       local myx = x
       local myy = y
       if direction == 0 then
          myy = y - 1
       elseif direction == 1 then
          myx = x + 1
       elseif direction == 2 then
          myy = y + 1
       elseif direction == 3 then
          myx = x - 1
       end
       if not party.map:checkLineOfFire(x,y,myx,myy,elevation) then
          return true
       else
          return false
       end
    end

------------------------------------------------------------------------------------------------
function extraCost(champion, skillLevel, cost)
	if champion:getEnergy() < cost then
		return false
	else
		return true
	end
end

--------------------------------------------------------------------------------------------------------
function projectileSpell(champion, x, y, direction, elevation, skillLevel, projectile, power, volleyCount, delay, sound, cost) 
	
	local c = 1
	projectileVolleyCount = 0
	-----------------------------1 sound
	if sound ~= nil then
		playSound(sound)
	end
	-----------------------------
	if checkwall() == true then
		spawn(projectile, party.level, x, y, direction, elevation)
	else 
		local a = spawn(projectile,party.level, x, y, direction, elevation)
       	a.projectile:setIgnoreEntity(party)
		--------------------------------------------------------------power														
		if power ~= "" then
       		a.projectile:setAttackPower(power)
		end
		-----------------------------------------------------------ordinal
		if champion then
			c = champion:getOrdinal()
		end
		a.projectile:setCastByChampion(c)
		-----------------------------------------------------------data
		if a.data then
			print("data")
		end
		-----------------------------------------------------------positioning
		local left = nil
        for i = 1,4 do
        	if party.party:getChampion(i):getOrdinal() == ord then
            	left = i == 1 or i == 3
                break
            end
        end
        local wpos = party:getWorldPosition()
        local dx = nil
        local dz = nil
       	if party.facing == 0 then
        	dx = left and -0.1 or 0.1
            dz = -1
        elseif party.facing == 1 then
            dz = left and 0.1 or -0.1
            dx = -1
       	 elseif party.facing == 2 then
            dx = left and 0.1 or -0.1
            dz = 1
        else 	-- party.facing == 3
            dz = left and -0.1 or 0.1
            dx = 1
        end
		a:setWorldPosition(vec(wpos[1]+dx,wpos[2]+1.35,wpos[3]+dz))
		-----------------------------------------------------------------if volley
		if volleyCount > 1 and delay ~= nil then
			-----------------------------------------extra cost()
			if cost ~= nil then
				local amount = champion:getEnergy() - cost
				champion:setEnergy(amount)		
			end
			------------------------------------------------------------------------------------------------------------------------ repeatCount()
			delayedCall("projectileScripts", delay, "volleyProjectileSpell", champion, projectile, power, volleyCount, delay, sound)
			projectileVolleyCount = projectileVolleyCount + 1
			print(volleyCount, delay, projectileVolleyCount, power)
		end
	end
	projectileSpellCaster = c
end
-------------------------------------------------------------------------------------------------------------------

	function volleyProjectileSpell(champion, projectile, power, volleyCount, delay, sound)

		local x = party.x
		local y = party.y
		local direction = party.facing
		local elevation = party.elevation
		local dx,dy = getForward(party.facing)
		
		if projectileVolleyCount == volleyCount then
			projectileVolleyCount = 0
			return false
		
		else
			
			if sound ~= nil then
				playSound(sound)
			end
			
			if checkwall() == true then
				spawn(projectile, party.level, x, y, direction, elevation)
			else
				
				local a = spawn(projectile,party.level, x, y, direction, elevation)
       			a.projectile:setIgnoreEntity(party)

       			a.projectile:setAttackPower(power)	

				local c = champion:getOrdinal()
				a.projectile:setCastByChampion(c)
				local left = nil
        		for i = 1,4 do
        			if party.party:getChampion(i):getOrdinal() == ord then
            			left = i == 1 or i == 3
                		break
            		end
        		end
        		local wpos = party:getWorldPosition()
        		local dx = nil
        		local dz = nil
        		if party.facing == 0 then
        			dx = left and -0.1 or 0.1
            		dz = -1
        		elseif party.facing == 1 then
           	 		dz = left and 0.1 or -0.1
	            	dx = -1
        		elseif party.facing == 2 then
            		dx = left and 0.1 or -0.1
            		dz = 1
        		else -- party.facing == 3
            		dz = left and -0.1 or 0.1
            		dx = 1
        		end
				a:setWorldPosition(vec(wpos[1]+dx,wpos[2]+1.35,wpos[3]+dz))
				a:setSubtileOffset(math.random() - 0.5, math.random()- 0.5)
				projectileVolleyCount = projectileVolleyCount + 1
				print(volleyCount, delay, projectileVolleyCount, power)
				delayedCall("projectileScripts", delay, "volleyProjectileSpell", champion, projectile, power, volleyCount, delay, sound)
			end
		end
		projectileSpellCaster = champion:getOrdinal()
	end

Next! - define your spell - which you already have done
(here is simple projectile spell thats was on hand - someone elses spell actually)
- just paste this into whatever script you import for your spells (or not)

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Code: Select all


     defineSpell{
		name = "plasma_bolt",
		uiName = "Plasma Bolt",
		gesture = 0,
		manaCost = 0,
		icon = 72,
		spellIcon = 13,
		hidden = true,
		description = "",
		onCast = function(champion, x, y, direction, elevation, skillLevel)
			projectileScripts.script.projectileSpell(champion, x, y, direction, elevation, skillLevel, "plasma_bolt", 25, 3, 0.5, "fireball_launch", 5)
		end,
	}




defineObject{
	name = "plasma_bolt",
	baseObject = "base_spell",
	components = {
		{
			class = "Particle",
			particleSystem = "plasma_bolt",
		},
		{
			class = "Light",
			color = vec(1, 1, 0.25),
			brightness = 40,
			range = 10,
			castShadow = true,
		},
		{
            class = "Script",
			name = "data",
            source = [[
				data = {}
    			function get(self,name)
       				return self.data[name]
    			end
    			function set(self,name,value)
       				self.data[name] = value
    			end]],
		},		
		{
			class = "Projectile",
			spawnOffsetY = 1.35,
			velocity = 12,
			radius = 0.1,
			hitEffect = "plasma_blast",
			onProjectileHit = function(self, what, entity)
				
				print(self.go.name, what, entity.name)
					
			end,	
		},
		{
			class = "Sound",
			sound = "lightning_bolt",
			pitch = 1.4,
		},
		{
			class = "Sound",
			name = "launchSound",
			sound = "lightning_bolt_launch",
			pitch = 2,
		},
		{
			class = "Sound",
			name = "launchSound2",
			sound = "lightning_bolt_launch",
			pitch = 1.5,
		},
	},
}
defineObject{
	name = "plasma_blast",
	baseObject = "base_spell",
	components = {
		{
			class = "Particle",
			particleSystem = "plasma_hit",
			destroyObject = true,
			rotation = vec(90,0,0),
		},
		{
			class = "Light",
			color = vec(1, 0.4, 0),
			brightness = 96,
			range = 16,
			fadeOut = 3,
			disableSelf = true,
		},
		{
			class = "Sound",
			sound = "magma_golem_meteor_fall",
			soundType = "ambient",
			pitch = 2,
		},
		{
			class = "Sound",
			sound = "gun_shot_cannon",
			soundType = "ambient",
			pitch = 1.5,
		},
	},
}
defineParticleSystem{
	name = "plasma_bolt",
	emitters = {
		-- fog
		{
			emissionRate = 10,
			emissionTime = 0,
			maxParticles = 1000,
			boxMin = {-0.05,-0.05,-0.05},
			boxMax = { 0.05, 0.05, 0.05},
			sprayAngle = {0,360},
			velocity = {0.1,0.2},
			objectSpace = true,
			texture = "assets/textures/particles/fog.tga",
			lifetime = {3,3},
			color0 = {0.2, 0.2, 0},
			opacity = 1,
			fadeIn = 0.2,
			fadeOut = 2.2,
			size = {0.2, 0.4},
			gravity = {0,0,0},
			airResistance = 0.1,
			rotationSpeed = 3,
			blendMode = "Additive",
		},

		-- stars
		{
			emissionRate = 512,
			emissionTime = 0,
			maxParticles = 1024,
			boxMin = {-0.1, -0.1, -0.1},
			boxMax = { 0.1,  0.1,  0.1},
			sprayAngle = {0,360},
			velocity = {0.01,0.2},
			objectSpace = false,
			texture = "assets/textures/particles/dust_particle_dif.tga",
			lifetime = {0.4,1},
			color0 = {1.0,1.0,0},
			opacity = 1,
			fadeIn = 0.001,
			fadeOut = 0.4,
			size = {0.05, 0.1},
			gravity = {0,0,0},
			airResistance = -2,
			rotationSpeed = 7,
			blendMode = "Additive",
		},

		-- glow
		{
			spawnBurst = true,
			emissionRate = 1,
			emissionTime = 0,
			maxParticles = 1,
			boxMin = {0,0,0},
			boxMax = {0,0,0},
			sprayAngle = {0,30},
			velocity = {0,0},
			texture = "assets/textures/particles/glow.tga",
			lifetime = {1000000, 1000000},
			colorAnimation = false,
			color0 = {1,1,0.25},
			opacity = 1,
			fadeIn = 0.1,
			fadeOut = 0.1,
			size = {1.0, 1.0},
			gravity = {0,0,0},
			airResistance = 1,
			rotationSpeed = 2,
			blendMode = "Additive",
			objectSpace = true,
		},
		{
			emissionRate = 128,
			emissionTime = 0,
			maxParticles = 128,
			sprayAngle = {0,180},
			velocity = {256, 256},
			boxMin = {0,0,0},
			boxMax = {0,0,0},
			texture = "assets/textures/particles/lightning01.tga",
			frameRate = 4,
			frameSize = 256,
			frameCount = 4,
			lifetime = {0.2,0.4},
			color0 = {6.5,2.5,0},
			opacity = 1,
			fadeIn = 0.001,
			fadeOut = 0.3,
			size = {0.3, 0.5},
			gravity = {0,0,0},
			airResistance = 1024,
			rotationSpeed = 0,
			blendMode = "Additive",
		},
	}
}
defineParticleSystem{
	name = "plasma_hit",
	emitters = {
		-- sparks
		{
			spawnBurst = true,
			maxParticles = 256,
			boxMin = {-0.1, -0.1, -0.1},
			boxMax = { 0.1,  0.1,  0.1},
			sprayAngle = {0,360},
			velocity = {8,12},
			objectSpace = false,
			texture = "assets/textures/particles/teleporter.tga",
			lifetime = {0.2,1},
			color0 = {1.0,2.0,4.0},
			opacity = 1,
			fadeIn = 0.001,
			fadeOut = 1,
			size = {0.05, 0.3},
			gravity = {0,0,0},
			airResistance = 8,
			rotationSpeed = 2,
			blendMode = "Additive",
		},

		-- fog
		{
			spawnBurst = true,
			maxParticles = 50,
			sprayAngle = {0,360},
			velocity = {0,3},
			objectSpace = true,
			texture = "assets/textures/particles/fog.tga",
			lifetime = {0.4,0.6},
			color0 = {0.15, 0.35, 1},
			opacity = 0.7,
			fadeIn = 0.1,
			fadeOut = 0.3,
			size = {1, 2},
			gravity = {0,0,0},
			airResistance = 0.5,
			rotationSpeed = 1,
			blendMode = "Additive",
		},

		-- 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 = {0.5, 0.5},
			colorAnimation = false,
			color0 = {0.5, 1, 2},
			opacity = 1,
			fadeIn = 0.01,
			fadeOut = 0.5,
			size = {1, 1},
			gravity = {0,0,0},
			airResistance = 1,
			rotationSpeed = 2,
			blendMode = "Additive",
		},

		{
			emissionRate = 512,
			emissionTime = 2,
			maxParticles = 1024,
			boxMin = {-0.75,0,-1.5},
			boxMax = {0.75,0,1.3},
			sprayAngle = {0,10},
			velocity = {0.1, 32},
			texture = "assets/textures/particles/rock_shard.tga",
			frameRate = 0,
			frameSize = 64,
			frameCount = 1,
			lifetime = {1, 6},
			color0 = {2, 0.2, 0},
			opacity = 1,
			fadeIn = 0.001,
			fadeOut = 1,
			size = {0.03, 0.1},
			gravity = {0,-20,0},
			airResistance = 2,
			rotationSpeed = 0,
			blendMode = "Translucent",
			--depthBias = -0.002,
			clampToGroundPlane = true,
		},
		{	-- flame clouds
			emissionRate = 2048,
			emissionTime = 0.5,
			maxParticles = 1024,
			boxMin = {-0.75,0,-1.5},
			boxMax = {0.75,0,1.3},
			sprayAngle = {0,10},
			velocity = {0.1, 4},
			texture = "assets/textures/particles/torch_flame.tga",
			frameRate = 35,
			frameSize = 64,
			frameCount = 16,
			lifetime = {0.5, 1.25},
			colorAnimation = true,
			color0 = {2, 2, 2},
			color1 = {1.0, 1.0, 1.0},
			color2 = {1.0, 0.5, 0.25},
			color3 = {1.0, 0.3, 0.1},
			opacity = 1,
			fadeIn = 0.001,
			fadeOut = 1,
			size = {0.2, 0.5},
			gravity = {0,0.2,0},
			airResistance = 0.2,
			rotationSpeed = 1,
			blendMode = "Additive",
			--depthBias = -0.002,
		},
		{	-- floaty sparks
			emissionRate = 1024,
			emissionTime = 2,
			maxParticles = 2048,
			boxMin = {-0.75,0,-1.5},
			boxMax = {0.75,0,1.3},
			sprayAngle = {0,10},
			velocity = {8, 24},
			texture = "assets/textures/particles/fire_elemental_spark.tga",
			lifetime = {1, 2.8},
			colorAnimation = true,
			color0 = {1, 1, 0.1},
			color1 = {1, 0.5, 0.1},
			color2 = {1, 0.3, 0.1},
			color3 = {1.0, 0.2, 0.1},
			opacity = 1,
			fadeIn = 0.001,
			fadeOut = 2,
			size = {0.1, 0.3},
			gravity = {0,0,0},
			rotationSpeed = 5,
			airResistance = 1,
			blendMode = "Additive",
			--depthBias = -0.002,
		},
	}
}

And here is a Weapon that will fire the spell (secondary action)

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Code: Select all

defineObject{
	name = "longbow2",
	baseObject = "base_item",
	components = {
		{
			class = "Model",
			model = "assets/models/items/longbow.fbx",
		},
		{
			class = "Item",
			uiName = "Crookhorn Longbow",
			description = "A powerful bow made from the horns of a crookhorn ram.",
			gfxIndex = 165,
			gfxIndexPowerAttack = 98,
			impactSound = "impact_blunt",
			primaryAction = "shockArrow",
			secondaryAction = "plasmaBolt",
			weight = 1.6,
			traits = { "missile_weapon" },
		},
		{
			class = "RangedAttack",
			name = "shockArrow",
			attackPower = 16,
			cooldown = 4.5,
			attackSound = "swipe_bow",
			ammo = "arrow",
			repeatCount = 5,
			repeatDelay = 0.2,
			spread = 0.3,
			projectileItem = "shock_arrow",
		},
		{
			class = "CastSpell",
			name = "plasmaBolt",
			uiName = "Plasma Bolt",
			buildup = 2.0,
			cooldown = 3.5,
			charges = 20,
			spell = "plasma_bolt",
			requirements = { "concentration", 2 , "missile_weapons", 2, },
			energyCost = 10,
			gameEffect = "Shoot an arrow enchanted with the energy of storms.",
		},
	},
	tags = { "weapon", "weapon_missile" },
}

Note** projectileScripts has been running smoothly for a year or two now... its very easy!
And I have built in functionality for volleys of projectile spells .... you just need to assign numbers to volleyCount, & delay, (eg, 5, 0.5 - 5 projectiles, delay of 0.5s)

Code: Select all

projectileSpell(champion, x, y, direction, elevation, skillLevel, projectile, power, volleyCount, delay, sound, cost)

You just call it like this:

Code: Select all

projectileScripts.script.projectileSpell(champion, x, y, direction, elevation, skillLevel, "plasma_bolt", 25, 3, 0.5, "fireball_launch", 5)

Hope this helps!
Akroma

Posted: **Mon Jun 20, 2016 4:17 am**

THOM wrote:(sigh - why are some things THAT complicate... )

Sorry, minmay, doesn't work. Probably, I am doing something wrong.

Does your code mean a) I have to re-define my spell as a projectile b) I have to use your code on an CastSpellComponent? I tried it still in an ItemActionComponent (of course in an onAttack hook).

It is just a demonstration of how to spawn a projectile in the same place it would be created by the builtin Fireball/Frostbolt/Lightning Bolt/Poison Bolt spells. You would use it wherever you want to launch a projectile. A plain ItemComponent's onAttack hook will work, so will anywhere else, you just need to supply the champion, x, y, direction, and elevation. You don't need to define a new spell or use a ScriptComponent unless you want to.

Posted: **Mon Jun 20, 2016 9:15 pm**

if I do it this way - it doesn't work:

Code: Select all

		{
			class = "ItemAction",
			name = "waterbolt",
			uiName = "Water Bolt",
			cooldown = 5,
			onAttack = function(champion, x, y, direction, elevation)
				local spl = spawn ("water_bolt",party.level,party.x,party.y,party.facing,party.elevation)
				spl.projectile:setIgnoreEntity(party)

          			-- Set cast by champion so that experience is awarded for kills.
          			local ord = champion:getOrdinal()
          			spl.projectile:setCastByChampion(ord)

          			-- Simulate the position of a player-cast spell.
          			local left = nil
        			for i = 1,4 do
    			       	   if party.party:getChampion(i):getOrdinal() == ord then
  			            	left = i == 1 or i == 3
  			            	break
 			           end
  			        end
  			        local wpos = party:getWorldPosition()
   			       	local dx = nil
 			        local dz = nil
   			       	if party.facing == 0 then
   			          dx = left and -0.1 or 0.1
  			          dz = -1
 			        elseif party.facing == 1 then
			          dz = left and 0.1 or -0.1
 			          dx = -1
 			        elseif party.facing == 2 then
     			          dx = left and 0.1 or -0.1
     			          dz = 1
     			        else -- party.facing == 3
     			          dz = left and -0.1 or 0.1
    			          dx = 1
  			        end

  			        spl:setWorldPosition(vec(wpos[1]+dx,wpos[2]+1.35,wpos[3]+dz))
			end,
		},

Posted: **Mon Jun 20, 2016 10:08 pm**

Code: Select all

ItemActionComponent.onAttack(self, champion, slot, chainIndex)

ItemActionComponent.onAttack() receives itself as the first argument, the champion as the second argument, the slot it's in as the third argument, and the chain attack index as the fourth argument. You are trying to use the first argument - the ItemActionComponent itself - as if it were the champion, so of course it isn't working.

Posted: **Mon Jun 20, 2016 11:44 pm**

so that means???

Posted: **Mon Jun 20, 2016 11:50 pm**

I really didn't think I would have to explain this part...
It means your function declaration is wrong. Change it to

Code: Select all

onAttack = function(self, champion, slot, chainIndex)

and then the arguments will match up with what you wanted.

Posted: **Tue Jun 21, 2016 12:29 am**

sorry for bothering you, but for me is (self, champion, slot, chainIndex) and (champion, x, y, direction, elevation) something complete different that you cannot exchange just because.

BTW: still don't work

Code: Select all

defineObject{
	name = "water_shooter",
	baseObject = "base_item",
	components = {
		{
			class = "Model",
			model = "assets/models/items/revolver.fbx",
			material = "zarchton_wand",
		},
		{
			class = "Item",
			uiName = "Water Shooter",
			description = "A strange mechanics makes this weapon compressing water and shooting it out in some kind of a jet.",
			gfxAtlas = "mod_assets/textures/iconatlas/iconatlas.dds",
			gfxIndex = 33,
			weight = 1.5,
			traits = { "weapon" },
			onAttack = function(self, champion, slot, chainIndex)
				local spl = spawn ("water_bolt",party.level,party.x,party.y,party.facing,party.elevation)
				spl.projectile:setIgnoreEntity(party)

          			-- Set cast by champion so that experience is awarded for kills.
          			local ord = champion:getOrdinal()
          			spl.projectile:setCastByChampion(ord)

          			-- Simulate the position of a player-cast spell.
          			local left = nil
        			for i = 1,4 do
    			       	   if party.party:getChampion(i):getOrdinal() == ord then
  			            	left = i == 1 or i == 3
  			            	break
 			           end
  			        end
  			        local wpos = party:getWorldPosition()
   			       	local dx = nil
 			        local dz = nil
   			       	if party.facing == 0 then
   			          dx = left and -0.1 or 0.1
  			          dz = -1
 			        elseif party.facing == 1 then
			          dz = left and 0.1 or -0.1
 			          dx = -1
 			        elseif party.facing == 2 then
     			          dx = left and 0.1 or -0.1
     			          dz = 1
     			        else -- party.facing == 3
     			          dz = left and -0.1 or 0.1
    			          dx = 1
  			        end
  			        spl:setWorldPosition(vec(wpos[1]+dx,wpos[2]+1.35,wpos[3]+dz))
			end,
		},
		{
			class = "ItemAction",
			name = "waterbolt",
			uiName = "Water Bolt",
			cooldown = 5,
			
		},

	},
}

Posted: **Tue Jun 21, 2016 12:35 am**

You are the one who exchanged function declarations "just because". You took the declaration for an onCastSpell hook function, and pasted it as the declaration for an ItemActionComponent.onAttack hook function. These hooks receive different arguments, so using the same declaration is unlikely to make semantic sense, and in fact the two hooks don't even receive the same number of arguments.

Anyway, now the problem is that you just moved the onAttack field from the ItemActionComponent to the ItemComponent. Move it back to the ItemActionComponent.

Posted: **Tue Jun 21, 2016 1:09 am**

I give up.

...the function won't be executed. I inserted a hudPrint just for to check. Nope, no reaction.

(and: yes, I moved back the function into the ItemActionComponent.)

Grimrock

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