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player_api: Prevent knockback when player is set as attached

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This is not directly related to player models but fits well
as a convenience feature in player_api.
This commit is contained in:
sfan5 2020-03-16 22:29:44 +01:00
parent b9dc758fef
commit fbbc7fc996
3 changed files with 20 additions and 2 deletions
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3
.luacheckrc
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@ -20,5 +20,8 @@ read_globals = {
-- Overwrites minetest.handle_node_drops -- Overwrites minetest.handle_node_drops
files["mods/creative/init.lua"].globals = { "minetest" } files["mods/creative/init.lua"].globals = { "minetest" }
-- Overwrites minetest.calculate_knockback
files["mods/player_api/api.lua"].globals = { "minetest" }
-- Don't report on legacy definitions of globals. -- Don't report on legacy definitions of globals.
files["mods/default/legacy.lua"].global = false files["mods/default/legacy.lua"].global = false

10
game_api.txt
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@ -424,7 +424,7 @@ Give Initial Stuff API
Players API Players API
----------- -----------
The player API can register player models and update the player's appearence The player API can register player models and update the player's appearance.
* `player_api.register_model(name, def)` * `player_api.register_model(name, def)`
* Register a new model to be used by players * Register a new model to be used by players
@ -457,6 +457,12 @@ The player API can register player models and update the player's appearence
* Any of the fields of the returned table may be nil. * Any of the fields of the returned table may be nil.
* player: PlayerRef * player: PlayerRef
* `player_api.player_attached`
* A table that maps a player name to a boolean.
* If the value for a given player is set to true, the default player
animations (walking, digging, ...) will no longer be updated.
Knockback from damage is also prevented for that player.
### Model Definition ### Model Definition
{ {
@ -467,7 +473,7 @@ The player API can register player models and update the player's appearence
-- <anim_name> = {x = <start_frame>, y = <end_frame>}, -- <anim_name> = {x = <start_frame>, y = <end_frame>},
foo = {x = 0, y = 19}, foo = {x = 0, y = 19},
bar = {x = 20, y = 39}, bar = {x = 20, y = 39},
-- ... -- ...
}, },
collisionbox = {-0.3, 0.0, -0.3, 0.3, 1.7, 0.3}, -- In nodes from feet position collisionbox = {-0.3, 0.0, -0.3, 0.3, 1.7, 0.3}, -- In nodes from feet position
stepheight = 0.6, -- In nodes stepheight = 0.6, -- In nodes

9
mods/player_api/api.lua
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@ -96,6 +96,15 @@ end)
local player_set_animation = player_api.set_animation local player_set_animation = player_api.set_animation
local player_attached = player_api.player_attached local player_attached = player_api.player_attached
-- Prevent knockback for attached players
local old_calculate_knockback = minetest.calculate_knockback
function minetest.calculate_knockback(player, ...)
if player_attached[player:get_player_name()] then
return 0
end
return old_calculate_knockback(player, ...)
end
-- Check each player and apply animations -- Check each player and apply animations
minetest.register_globalstep(function(dtime) minetest.register_globalstep(function(dtime)
for _, player in pairs(minetest.get_connected_players()) do for _, player in pairs(minetest.get_connected_players()) do