nalc/minetest_playereffects
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Add effect failure

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The apply function of effects can return false, in that case, the effect
is not applied
This commit is contained in:
Wuzzy 2014-07-14 17:55:48 +02:00
parent 21f053270f
commit 15daa210c4
2 changed files with 35 additions and 3 deletions
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24
examples.lua
View File

@ -1,4 +1,13 @@
----- EXAMPLE EFFECT TYPES ----- ----- EXAMPLE EFFECT TYPES -----
--[[ Null effect. The apply function always returns false, which means applying the
effect will never succeed ]]
playereffects.register_effect_type("null", "No effect", nil, {},
function()
return false
end
)
-- Makes the player screen black for 5 seconds (very experimental!) -- Makes the player screen black for 5 seconds (very experimental!)
playereffects.register_effect_type("blind", "Blind", nil, {}, playereffects.register_effect_type("blind", "Blind", nil, {},
function(player) function(player)
@ -8,7 +17,12 @@ playereffects.register_effect_type("blind", "Blind", nil, {},
scale = { x=-100, y=-100 }, scale = { x=-100, y=-100 },
text = "playereffects_example_black.png", text = "playereffects_example_black.png",
}) })
if(hudid ~= nil) then
return { hudid = hudid } return { hudid = hudid }
else
minetest.log("error", "[playereffects] [examples] The effect \"Blind\" could not be applied. The call to hud_add(...) failed.")
return false
end
end, end,
function(effect) function(effect)
local player = minetest.get_player_by_name(effect.playername) local player = minetest.get_player_by_name(effect.playername)
@ -91,6 +105,16 @@ playereffects.register_effect_type("stress", "Stress Test Effect", nil, {},
------ Chat commands for the example effects ------ ------ Chat commands for the example effects ------
-- Null effect (never succeeds)
minetest.register_chatcommand("null", {
params = "",
description = "Does nothing.",
privs = {},
func = function(name, param)
playereffects.apply_effect_type("null", 5, minetest.get_player_by_name(name))
end,
})
minetest.register_chatcommand("blind", { minetest.register_chatcommand("blind", {
params = "", params = "",
description = "Makes your screen black for a short time.", description = "Makes your screen black for a short time.",

12
init.lua
View File

@ -69,7 +69,17 @@ end
function playereffects.apply_effect_type(effect_type_id, duration, player) function playereffects.apply_effect_type(effect_type_id, duration, player)
local start_time = os.time() local start_time = os.time()
local status = playereffects.effect_types[effect_type_id].apply(player)
local playername = player:get_player_name() local playername = player:get_player_name()
local metadata
if(status == false) then
minetest.log("action", "[playereffects] Attempt to apply effect type "..effect_type_id.." to player "..playername.." failed!")
return
else
metadata = status
end
local groups = playereffects.effect_types[effect_type_id].groups local groups = playereffects.effect_types[effect_type_id].groups
for k,v in pairs(groups) do for k,v in pairs(groups) do
playereffects.cancel_effect_group(v, playername) playereffects.cancel_effect_group(v, playername)
@ -105,8 +115,6 @@ function playereffects.apply_effect_type(effect_type_id, duration, player)
hudids = {text_id=nil, icon_id=nil} hudids = {text_id=nil, icon_id=nil}
end end
local metadata = playereffects.effect_types[effect_type_id].apply(player)
local effect = { local effect = {
playername = playername, playername = playername,
effect_id = effect_id, effect_id = effect_id,