New lightning breath particle effect

git-svn-id: http://svn.net-core.org/repos/t-engine4@4659 51575b47-30f0-44d4-a5cc-537603b46e54

game/modules/tome/data/talents/gifts/storm-drake.lua

@@ -194,7 +194,18 @@ newTalent{
 		if not x or not y then return nil end
 		local dam = t.getDamage(self, t)
 		self:project(tg, x, y, DamageType.LIGHTNING_DAZE, rng.avg(dam / 3, dam, 3))
-		game.level.map:particleEmitter(self.x, self.y, tg.radius, "breath_lightning", {radius=tg.radius, tx=x-self.x, ty=y-self.y})
+
+		local sradius = (tg.radius + 0.5) * (engine.Map.tile_w + engine.Map.tile_h) / 2
+		local nb_forks = 24
+		local angle_diff = 55 / nb_forks
+		local base_a = math.deg(math.atan2(y-self.y, x-self.x)) - 27.5
+		for i = 0, nb_forks - 1 do
+			local a = math.rad(rng.range(base_a+i*angle_diff,base_a+angle_diff+i*angle_diff))
+			local tx = x + math.floor(math.cos(a) * tg.radius)
+			local ty = y + math.floor(math.sin(a) * tg.radius)
+			game.level.map:particleEmitter(self.x, self.y, tg.radius, "lightning", {radius=tg.radius, grids=grids, tx=tx-x, ty=ty-y, nb_particles=25, life=12})
+		end
+
 		game:playSoundNear(self, "talents/breath")
 		return true
 	end,