VoxeLibre/mods/ITEMS/mcl_potions/functions.lua

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local is_invisible = {}
local is_poisoned = {}
local is_regenerating = {}
local is_strong = {}
local is_weak = {}
local is_water_breathing = {}
local is_leaping = {}
local is_swift = {}
local is_cat = {}
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local is_fire_proof = {}
local is_fire_node = { ["mcl_core:lava_flowing"]=true,
["mcl_core:lava_source"]=true,
["mcl_fire:eternal_fire"]=true,
["mcl_fire:fire"]=true,
["mcl_nether:magma"]=true,
["mcl_nether:nether_lava_source"]=true,
["mcl_nether:nether_lava_flowing"]=true,
["mcl_nether:nether_lava_source"]=true}
minetest.register_globalstep(function(dtime)
-- Check for invisible players
for player, vals in pairs(is_invisible) do
if is_invisible[player] and player:get_properties() then
player = player or player:get_luaentity()
is_invisible[player].timer = is_invisible[player].timer + dtime
if player:get_pos() then mcl_potions._add_spawner(player, "#B0B0B0") end
if is_invisible[player].timer >= is_invisible[player].dur then
mcl_potions.make_invisible(player, false)
is_invisible[player] = nil
end
elseif not player:get_properties() then
is_invisible[player] = nil
end
end
-- Check for poisoned players
for player, vals in pairs(is_poisoned) do
if is_poisoned[player] and player:get_properties() then
player = player or player:get_luaentity()
is_poisoned[player].timer = is_poisoned[player].timer + dtime
is_poisoned[player].hit_timer = (is_poisoned[player].hit_timer or 0) + dtime
if player:get_pos() then mcl_potions._add_spawner(player, "#225533") end
if is_poisoned[player].hit_timer >= is_poisoned[player].step then
if player._cmi_is_mob then
player.health = math.max(player.health - 1, 1)
else
player:set_hp( math.max(player:get_hp() - 1, 1), { type = "punch", from = "potion" })
end
is_poisoned[player].hit_timer = 0
end
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if is_poisoned[player].timer >= is_poisoned[player].dur then
is_poisoned[player] = nil
end
elseif not player:get_properties() then
is_poisoned[player] = nil
end
end
-- Check for regnerating players
for player, vals in pairs(is_regenerating) do
if is_regenerating[player] and player:get_properties() then
player = player or player:get_luaentity()
is_regenerating[player].timer = is_regenerating[player].timer + dtime
is_regenerating[player].heal_timer = (is_regenerating[player].heal_timer or 0) + dtime
if player:get_pos() then mcl_potions._add_spawner(player, "#A52BB2") end
if is_regenerating[player].heal_timer >= is_regenerating[player].step then
player:set_hp(math.min(player:get_properties().hp_max or 20, player:get_hp() + 1))
is_regenerating[player].heal_timer = 0
end
if is_regenerating[player].timer >= is_regenerating[player].dur then
is_regenerating[player] = nil
end
elseif not player:get_properties() then
is_regenerating[player] = nil
end
end
-- Check for water breathing players
for player, vals in pairs(is_water_breathing) do
if is_water_breathing[player] and player:get_properties() then
player = player or player:get_luaentity()
is_water_breathing[player].timer = is_water_breathing[player].timer + dtime
if player:get_pos() then mcl_potions._add_spawner(player, "#0000AA") end
if player:get_breath() then
if player:get_breath() < 10 then player:set_breath(10) end
end
if is_water_breathing[player].timer >= is_water_breathing[player].dur then
is_water_breathing[player] = nil
end
elseif not player:get_properties() then
is_water_breathing[player] = nil
end
end
-- Check for leaping players
for player, vals in pairs(is_leaping) do
if is_leaping[player] and player:get_properties() then
player = player or player:get_luaentity()
is_leaping[player].timer = is_leaping[player].timer + dtime
if player:get_pos() then mcl_potions._add_spawner(player, "#00CC33") end
if is_leaping[player].timer >= is_leaping[player].dur then
playerphysics.remove_physics_factor(player, "jump", "mcl_potions:leaping")
is_leaping[player] = nil
end
elseif not player:get_properties() then
is_leaping[player] = nil
end
end
-- Check for swift players
for player, vals in pairs(is_swift) do
if is_swift[player] and player:get_properties() then
player = player or player:get_luaentity()
is_swift[player].timer = is_swift[player].timer + dtime
if player:get_pos() then mcl_potions._add_spawner(player, "#009999") end
if is_swift[player].timer >= is_swift[player].dur then
playerphysics.remove_physics_factor(player, "speed", "mcl_potions:swiftness")
is_swift[player] = nil
end
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elseif not player:get_properties() then
is_swift[player] = nil
end
end
-- Check for Night Vision equipped players
for player, vals in pairs(is_cat) do
if is_cat[player] and player:get_properties() then
player = player or player:get_luaentity()
is_cat[player].timer = is_cat[player].timer + dtime
if player:get_pos() then mcl_potions._add_spawner(player, "#1010AA") end
player:override_day_night_ratio(0.45)
if is_cat[player].timer >= is_cat[player].dur then
is_cat[player] = nil
end
elseif not player:get_properties() then
is_cat[player] = nil
end
end
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-- Check for Fire Proof players
for player, vals in pairs(is_fire_proof) do
if is_fire_proof[player] and player:get_properties() then
player = player or player:get_luaentity()
is_fire_proof[player].timer = is_fire_proof[player].timer + dtime
if player:get_pos() then mcl_potions._add_spawner(player, "#E0B050") end
if is_fire_proof[player].timer >= is_fire_proof[player].dur then
is_fire_proof[player] = nil
end
elseif not player:get_properties() then
is_fire_proof[player] = nil
end
end
-- Check for Weak players
for player, vals in pairs(is_weak) do
if is_weak[player] and player:get_properties() then
player = player or player:get_luaentity()
is_weak[player].timer = is_weak[player].timer + dtime
if player:get_pos() then mcl_potions._add_spawner(player, "#7700BB") end
if is_weak[player].timer >= is_weak[player].dur then
is_weak[player] = nil
end
elseif not player:get_properties() then
is_weak[player] = nil
end
end
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-- Check for Strong players
for player, vals in pairs(is_strong) do
if is_strong[player] and player:get_properties() then
player = player or player:get_luaentity()
is_strong[player].timer = is_strong[player].timer + dtime
if player:get_pos() then mcl_potions._add_spawner(player, "#7700BB") end
if is_strong[player].timer >= is_strong[player].dur then
is_strong[player] = nil
end
elseif not player:get_properties() then
is_strong[player] = nil
end
end
end)
-- Prevent damage to player with Fire Resistance enabled
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minetest.register_on_player_hpchange(function(player, hp_change)
if is_fire_proof[player] and hp_change < 0 then
-- This is a bit forced, but it assumes damage is taken by fire and avoids it
-- also assumes any change in hp happens between calls to this function
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-- it's worth noting that you don't take damage from players in this case...
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local player_info = mcl_playerinfo[player:get_player_name()]
if is_fire_node[player_info.node_head] or is_fire_node[player_info.node_feet] or is_fire_node[player_info.node_stand] then
if player:get_breath() == 0 then -- probably drowning
return -1
else
return 0
end
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else
return hp_change
end
else
return hp_change
end
end, true)
-- -- If a player is punched and is a weak player, damage by 2 additional hearts
-- minetest.register_on_player_hpchange(function(player, hp_change)
--
-- if is_weak[player] and hp_change < 0 then
--
-- -- prevent weakness from healing the victim
-- return math.min(hp_change - 4, 0)
--
-- else
-- return hp_change
-- end
--
-- end, true)
function mcl_potions._reset_player_effects(player)
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player = player or player:get_luaentity()
if is_invisible[player] then
mcl_potions.make_invisible(player, false)
is_invisible[player] = nil
end
if is_poisoned[player] then
is_poisoned[player] = nil
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end
if is_regenerating[player] then
is_regenerating[player] = nil
end
if is_strong[player] then
is_strong[player] = nil
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end
if is_weak[player] then
is_weak[player] = nil
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end
if is_water_breathing[player] then
is_water_breathing[player] = nil
end
if is_leaping[player] then
is_leaping[player] = nil
playerphysics.remove_physics_factor(player, "jump", "mcl_potions:leaping")
end
if is_swift[player] then
is_swift[player] = nil
playerphysics.remove_physics_factor(player, "speed", "mcl_potions:swiftness")
end
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if is_cat[player] then
is_cat[player] = nil
end
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if is_fire_proof[player] then
is_fire_proof[player] = nil
end
end
minetest.register_on_leaveplayer( function(player) mcl_potions._reset_player_effects(player) end)
minetest.register_on_dieplayer( function(player) mcl_potions._reset_player_effects(player) end)
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function mcl_potions.is_obj_hit(self, pos)
for _,object in pairs(minetest.get_objects_inside_radius(pos, 1.1)) do
local entity = object:get_luaentity()
if entity and entity.name ~= self.object:get_luaentity().name then
if object:is_player() or entity._cmi_is_mob then return true end
end
end
return false
end
function mcl_potions.make_invisible(player, toggle)
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if not player then return false end
if toggle then -- hide player
is_invisible[player].old_size = player:get_properties().visual_size
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player:set_properties({visual_size = {x = 0, y = 0}})
player:set_nametag_attributes({color = {a = 0}})
else -- show player
player:set_properties({visual_size = is_invisible[player].old_size})
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player:set_nametag_attributes({color = {a = 255}})
end
end
function mcl_potions.poison(player, toggle)
if not player then return false end
is_poisoned[player:get_player_name()] = toggle
end
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function mcl_potions.regenerate(player, toggle)
if not player then return false end
is_regenerating[player:get_player_name()] = toggle
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end
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function mcl_potions._use_potion(item, obj, color)
local d = 0.1
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local pos = obj:get_pos()
minetest.sound_play("mcl_potions_drinking", {pos = pos, max_hear_distance = 6, gain = 1})
minetest.add_particlespawner({
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amount = 25,
time = 1,
minpos = {x=pos.x-d, y=pos.y+1, z=pos.z-d},
maxpos = {x=pos.x+d, y=pos.y+2, z=pos.z+d},
minvel = {x=-0.1, y=0, z=-0.1},
maxvel = {x=0.1, y=0.1, z=0.1},
minacc = {x=-0.1, y=0, z=-0.1},
maxacc = {x=0.1, y=.1, z=0.1},
minexptime = 1,
maxexptime = 5,
minsize = 0.5,
maxsize = 1,
collisiondetection = true,
vertical = false,
texture = "mcl_potions_sprite.png^[colorize:"..color..":127",
})
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end
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function mcl_potions._add_spawner(obj, color)
local d = 0.2
local pos = obj:get_pos()
minetest.add_particlespawner({
amount = 2,
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time = 1,
minpos = {x=pos.x-d, y=pos.y+1, z=pos.z-d},
maxpos = {x=pos.x+d, y=pos.y+2, z=pos.z+d},
minvel = {x=-0.1, y=0, z=-0.1},
maxvel = {x=0.1, y=0.1, z=0.1},
minacc = {x=-0.1, y=0, z=-0.1},
maxacc = {x=0.1, y=.1, z=0.1},
minexptime = 0.5,
maxexptime = 1,
minsize = 0.5,
maxsize = 1,
collisiondetection = false,
vertical = false,
texture = "mcl_potions_sprite.png^[colorize:"..color..":127",
})
end
local is_zombie = {}
for i, zombie in ipairs({"husk","zombie","pigman"}) do
is_zombie["mobs_mc:"..zombie] = true
is_zombie["mobs_mc:baby_"..zombie] = true
end
function mcl_potions.healing_func(player, hp)
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obj = player:get_luaentity()
if is_zombie[player:get_entity_name()] then hp = -hp end
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if hp > 0 then
if obj and obj._cmi_is_mob then
obj.health = math.max(obj.health + hp, obj.hp_max)
else
player:set_hp(math.min(player:get_hp() + hp, player:get_properties().hp_max))
end
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else
if obj and obj._cmi_is_mob then
obj.health = obj.health + hp
else
player:set_hp(player:get_hp() + hp, { type = "punch", from = "potion" })
end
end
-- adjust mob health
obj = player:get_luaentity()
if obj and obj._cmi_is_mob then
obj.health = obj.health + hp
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end
end
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function mcl_potions.swiftness_func(player, factor, duration)
if not player:get_meta() then return false end
if not is_swift[player] then
is_swift[player] = {dur = duration, timer = 0}
playerphysics.add_physics_factor(player, "speed", "mcl_potions:swiftness", factor)
else
local victim = is_swift[player]
playerphysics.add_physics_factor(player, "speed", "mcl_potions:swiftness", factor)
victim.dur = math.max(duration, victim.dur - victim.timer)
victim.timer = 0
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end
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end
function mcl_potions.leaping_func(player, factor, duration)
if not player:get_meta() then return false end
if not is_leaping[player] then
is_leaping[player] = {dur = duration, timer = 0}
playerphysics.add_physics_factor(player, "jump", "mcl_potions:leaping", factor)
else
local victim = is_leaping[player]
playerphysics.add_physics_factor(player, "jump", "mcl_potions:leaping", factor)
victim.dur = math.max(duration, victim.dur - victim.timer)
victim.timer = 0
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end
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end
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function mcl_potions.weakness_func(player, factor, duration)
if not is_weak[player] then
is_weak[player] = {dur = duration, timer = 0, factor = factor}
else
local victim = is_weak[player]
victim.factor = factor
victim.dur = math.max(duration, victim.dur - victim.timer)
victim.timer = 0
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end
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end
function mcl_potions.strength_func(player, factor, duration)
if not is_strong[player] then
is_strong[player] = {dur = duration, timer = 0, factor = factor}
else
local victim = is_strong[player]
victim.factor = factor
victim.dur = math.max(duration, victim.dur - victim.timer)
victim.timer = 0
end
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end
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function mcl_potions.poison_func(player, factor, duration)
if not is_poisoned[player] then
is_poisoned[player] = {step = factor, dur = duration, timer = 0}
else
local victim = is_poisoned[player]
victim.step = math.min(victim.step, factor)
victim.dur = math.max(duration, victim.dur - victim.timer)
victim.timer = 0
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end
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end
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function mcl_potions.regeneration_func(player, factor, duration)
if not is_regenerating[player] then
is_regenerating[player] = {step = factor, dur = duration, timer = 0}
else
local victim = is_regenerating[player]
victim.step = math.min(victim.step, factor)
victim.dur = math.max(duration, victim.dur - victim.timer)
victim.timer = 0
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end
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end
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function mcl_potions.invisiblility_func(player, duration)
if not is_invisible[player] then
is_invisible[player] = {dur = duration, timer = 0}
mcl_potions.make_invisible(player, true)
else
local victim = is_invisible[player]
victim.dur = math.max(duration, victim.dur - victim.timer)
victim.timer = 0
end
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end
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function mcl_potions.water_breathing_func(player, duration)
if not is_water_breathing[player] then
is_water_breathing[player] = {dur = duration, timer = 0}
else
local victim = is_water_breathing[player]
victim.dur = math.max(duration, victim.dur - victim.timer)
victim.timer = 0
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end
end
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function mcl_potions.fire_resistance_func(player, duration)
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if not is_fire_proof[player] then
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is_fire_proof[player] = {dur = duration, timer = 0}
else
local victim = is_fire_proof[player]
victim.dur = math.max(duration, victim.dur - victim.timer)
victim.timer = 0
end
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end
function mcl_potions.night_vision_func(player, duration)
if not is_cat[player] then
is_cat[player] = {dur = duration, timer = 0}
else
local victim = is_cat[player]
victim.dur = math.max(duration, victim.dur - victim.timer)
victim.timer = 0
end
end