MineClone2/mods/ITEMS/mcl_potions/lingering.lua
2020-08-19 17:37:41 +02:00

183 lines
5.4 KiB
Lua

local S = minetest.get_translator("mcl_potions")
local lingering_image = function(colorstring, opacity)
if not opacity then
opacity = 127
end
return "mcl_potions_splash_overlay.png^[colorize:"..colorstring..":"..tostring(opacity).."^mcl_potions_lingering_bottle.png"
end
local lingering_effect_at = {}
local function add_lingering_effect(pos, color, def, is_water, instant)
lingering_effect_at[pos] = {color = color, timer = 30, def = def, is_water = is_water}
end
local lingering_timer = 0
minetest.register_globalstep(function(dtime)
lingering_timer = lingering_timer + dtime
if lingering_timer >= 1 then
for pos, vals in pairs(lingering_effect_at) do
vals.timer = vals.timer - lingering_timer
local d = 4 * (vals.timer / 30.0)
local texture
if vals.is_water then
texture = "mcl_particles_droplet_bottle.png"
elseif vals.def.instant then
texture = "mcl_particles_instant_effect.png"
else
texture = "mcl_particles_effect.png"
end
minetest.add_particlespawner({
amount = 10 * d^2,
time = 1,
minpos = {x=pos.x-d, y=pos.y+0.5, z=pos.z-d},
maxpos = {x=pos.x+d, y=pos.y+1, z=pos.z+d},
minvel = {x=-0.5, y=0, z=-0.5},
maxvel = {x=0.5, y=0.5, z=0.5},
minacc = {x=-0.2, y=0, z=-0.2},
maxacc = {x=0.2, y=.05, z=0.2},
minexptime = 1,
maxexptime = 2,
minsize = 2,
maxsize = 4,
collisiondetection = true,
vertical = false,
texture = texture.."^[colorize:"..vals.color..":127",
})
-- Extinguish fire if water bottle
if vals.is_water then
if mcl_potions._extinguish_nearby_fire(pos, d) then
vals.timer = vals.timer - 3.25
end
end
-- Affect players and mobs
for _, obj in pairs(minetest.get_objects_inside_radius(pos, d)) do
local entity = obj:get_luaentity()
if obj:is_player() or entity._cmi_is_mob then
vals.def.potion_fun(obj)
-- TODO: Apply timer penalty only if the potion effect was acutally applied
vals.timer = vals.timer - 3.25
end
end
if vals.timer <= 0 then
lingering_effect_at[pos] = nil
end
end
lingering_timer = 0
end
end)
function mcl_potions.register_lingering(name, descr, color, def)
local id = "mcl_potions:"..name.."_lingering"
local longdesc = def.longdesc
if not def.no_effect then
longdesc = S("A throwable potion that will shatter on impact, where it creates a magic cloud that lingers around for a while. Any player or mob inside the cloud will receive the potion's effect, possibly repeatedly.")
if def.longdesc then
longdesc = longdesc .. "\n" .. def.longdesc
end
end
minetest.register_craftitem(id, {
description = descr,
_tt_help = def.tt,
_doc_items_longdesc = longdesc,
_doc_items_usagehelp = S("Use the “Punch” key to throw it."),
inventory_image = lingering_image(color),
groups = {brewitem=1, not_in_creative_inventory=0},
on_use = function(item, placer, pointed_thing)
local velocity = 10
local dir = placer:get_look_dir();
local pos = placer:getpos();
local obj = minetest.add_entity({x=pos.x+dir.x,y=pos.y+2+dir.y,z=pos.z+dir.z}, id.."_flying")
obj:setvelocity({x=dir.x*velocity,y=dir.y*velocity,z=dir.z*velocity})
obj:setacceleration({x=dir.x*-3, y=-9.8, z=dir.z*-3})
obj:get_luaentity()._thrower = placer:get_player_name()
if not minetest.is_creative_enabled(placer:get_player_name()) then
item:take_item()
end
return item
end,
stack_max = 1,
_on_dispense = function(stack, dispenserpos, droppos, dropnode, dropdir)
local s_pos = vector.add(dispenserpos, vector.multiply(dropdir, 0.51))
local obj = minetest.add_entity({x=s_pos.x+dropdir.x,y=s_pos.y+dropdir.y,z=s_pos.z+dropdir.z}, id.."_flying")
local velocity = 22
obj:set_velocity({x=dropdir.x*velocity,y=dropdir.y*velocity,z=dropdir.z*velocity})
obj:set_acceleration({x=dropdir.x*-3, y=-9.8, z=dropdir.z*-3})
end
})
local w = 0.7
minetest.register_entity(id.."_flying",{
textures = {lingering_image(color)},
hp_max = 1,
visual_size = {x=w/2,y=w/2},
collisionbox = {-0.1,-0.1,-0.1,0.1,0.1,0.1},
pointable = false,
on_step = function(self, dtime)
local pos = self.object:get_pos()
local node = minetest.get_node(pos)
local n = node.name
local g = minetest.get_node_group(n, "liquid")
local d = 4
if n ~= "air" and n ~= "mcl_portals:portal" and n ~= "mcl_portals:portal_end" and g == 0 or mcl_potions.is_obj_hit(self, pos) then
minetest.sound_play("mcl_potions_breaking_glass", {pos = pos, max_hear_distance = 16, gain = 1})
add_lingering_effect(pos, color, def, name == "water")
local texture, minacc, maxacc
if name == "water" then
texture = "mcl_particles_droplet_bottle.png"
minacc = {x=-0.2, y=-0.05, z=-0.2}
maxacc = {x=0.2, y=0.05, z=0.2}
else
if def.instant then
texture = "mcl_particles_instant_effect.png"
else
texture = "mcl_particles_effect.png"
end
minacc = {x=-0.2, y=0, z=-0.2}
maxacc = {x=0.2, y=.05, z=0.2}
end
minetest.add_particlespawner({
amount = 40,
time = 1,
minpos = {x=pos.x-d, y=pos.y+0.5, z=pos.z-d},
maxpos = {x=pos.x+d, y=pos.y+1, z=pos.z+d},
minvel = {x=-0.5, y=0, z=-0.5},
maxvel = {x=0.5, y=0.5, z=0.5},
minacc = minacc,
maxacc = maxacc,
minexptime = 1,
maxexptime = 2,
minsize = 1,
maxsize = 2,
collisiondetection = true,
vertical = false,
texture = texture.."^[colorize:"..color..":127",
})
if name == "water" then
mcl_potions._extinguish_nearby_fire(pos, d)
end
self.object:remove()
end
end,
})
end