From dafe860e56ac7ce866affe414fe7eef20b5fd3db Mon Sep 17 00:00:00 2001
From: NO11 <no11@noreply.git.minetest.land>
Date: Sun, 24 Oct 2021 19:31:51 +0000
Subject: [PATCH] simple totem particles

---
 mods/ITEMS/mcl_totems/init.lua | 77 +++++++++-------------------------
 1 file changed, 20 insertions(+), 57 deletions(-)

diff --git a/mods/ITEMS/mcl_totems/init.lua b/mods/ITEMS/mcl_totems/init.lua
index 2206fcb2a..79b2c8de0 100644
--- a/mods/ITEMS/mcl_totems/init.lua
+++ b/mods/ITEMS/mcl_totems/init.lua
@@ -4,49 +4,7 @@ minetest.register_on_leaveplayer(function(player)
 	hud_totem[player] = nil
 end)
 
--- Totem particle registration
-
-function rgb_to_hex(r, g, b)
-	return string.format("%02x%02x%02x", r, g, b)
-end
-
-minetest.register_entity("mcl_totems:totem_particle", {
-	physical = true,
-	collide_with_objects = false,
-	collisionbox = { -0.02, -0.02, -0.02, 0.02, 0.02, 0.02 },
-	pointable = false,
-	visual = "sprite",
-	visual_size = { x = 0.2, y = 0.2 },
-	spritediv = { x = 1, y = 1 },
-	initial_sprite_basepos = { x = 0, y = 0 },
-	static_save = false,
-	glow = 14,
-	on_activate = function(self, staticdata)
-		local color
-		if math.random(0, 3) == 0 then
-			color = rgb_to_hex( 153 + math.random() * 51, 153 + math.random() * 76.5, math.random() * 51)
-		else
-			color = rgb_to_hex(25.5 + math.random() * 102, 153 + math.random() * 76.5, math.random() * 51)
-		end
-		self.object:set_properties({
-			textures = { "mcl_particles_totem"..math.random(1, 4)..".png^[colorize:#"..color }
-		})
-		local t = math.random(1, 2)*math.random()
-		minetest.after(t, function()
-			self.object:set_velocity({ x = math.random(-4, 4) * math.random(), y = math.random(-1, 4) * math.random(), z = math.random(-4, 4) * math.random() })
-		end)
-		minetest.after(0.3 + t, function()
-			self.object:set_acceleration({ x = 0, y = -4, z = 0 })
-			self.object:set_velocity({ x = 0, y = 0, z = 0 })
-		end)
-	end,
-	on_step = function(self, dtime)
-		local r = math.random(1, 50)
-		if r == 1 then
-			self.object:remove()
-		end
-	end
-})
+local particle_colors = {"98BF22", "C49E09", "337D0B", "B0B021", "1E9200"} -- TODO: real MC colors
 
 -- Save the player from death when holding totem of undying in hand
 mcl_damage.register_modifier(function(obj, damage, reason)
@@ -74,27 +32,32 @@ mcl_damage.register_modifier(function(obj, damage, reason)
 				end
 
 				-- Effects
-				minetest.sound_play({ name = "mcl_totems_totem", gain = 1 }, { pos = ppos, max_hear_distance = 16 }, true)
-
-				--Particles
+				minetest.sound_play({name = "mcl_totems_totem", gain = 1}, {pos=ppos, max_hear_distance = 16}, true)
 				
-				minetest.after(0.1, function()
-					local new_pos = obj:get_pos()
-					if not new_pos then return end
-					local particlepos = { x = new_pos.x, y = new_pos.y + 1, z = new_pos.z }
-					for i = 1, 150 do
-						minetest.add_entity(particlepos, "mcl_totems:totem_particle")
-					end
-				end)
+				for i = 1, 100 do
+					minetest.add_particle({
+						pos = vector.offset(ppos, 0, math.random(-10, 10) / 10, 0),
+        					velocity = vector.new(math.random(-15, 15) / 10, math.random(0, 15) / 10, math.random(-15, 15) / 10),
+        					acceleration = vector.new(0, -math.random(1, 10) / 10, 0),
+        					expirationtime = math.random(1, 3),
+        					size = math.random(1, 2),
+        					collisiondetection = true,
+        					collision_removal = true,
+        					object_collision = false,
+        					texture = "mcl_particles_totem" .. math.random(1, 4) .. ".png^[colorize:#" .. particle_colors[math.random(#particle_colors)],
+        					glow = 10,
+					})
+					
+				end
 
 				-- Big totem overlay
 				if not hud_totem[obj] then
 					hud_totem[obj] = obj:hud_add({
 						hud_elem_type = "image",
 						text = "mcl_totems_totem.png",
-						position = { x = 0.5, y = 1 },
-						scale = { x = 17, y = 17 },
-						offset = { x = 0, y = -178 },
+						position = {x = 0.5, y = 1},
+						scale = {x = 17, y = 17},
+						offset = {x = 0, y = -178},
 						z_index = 100,
 					})
 					minetest.after(3, function()