player_api/api.lua
sfan5 da8ecc1d68 player_api: Prevent knockback when player is set as attached
This is not directly related to player models but fits well
as a convenience feature in player_api.
2020-03-17 22:08:36 +01:00

150 lines
4.3 KiB
Lua

-- Minetest 0.4 mod: player
-- See README.txt for licensing and other information.
player_api = {}
-- Player animation blending
-- Note: This is currently broken due to a bug in Irrlicht, leave at 0
local animation_blend = 0
player_api.registered_models = { }
-- Local for speed.
local models = player_api.registered_models
function player_api.register_model(name, def)
models[name] = def
end
-- Player stats and animations
local player_model = {}
local player_textures = {}
local player_anim = {}
local player_sneak = {}
player_api.player_attached = {}
function player_api.get_animation(player)
local name = player:get_player_name()
return {
model = player_model[name],
textures = player_textures[name],
animation = player_anim[name],
}
end
-- Called when a player's appearance needs to be updated
function player_api.set_model(player, model_name)
local name = player:get_player_name()
local model = models[model_name]
if model then
if player_model[name] == model_name then
return
end
player:set_properties({
mesh = model_name,
textures = player_textures[name] or model.textures,
visual = "mesh",
visual_size = model.visual_size or {x = 1, y = 1},
collisionbox = model.collisionbox or {-0.3, 0.0, -0.3, 0.3, 1.7, 0.3},
stepheight = model.stepheight or 0.6,
eye_height = model.eye_height or 1.47,
})
player_api.set_animation(player, "stand")
else
player:set_properties({
textures = {"player.png", "player_back.png"},
visual = "upright_sprite",
visual_size = {x = 1, y = 2},
collisionbox = {-0.3, 0.0, -0.3, 0.3, 1.75, 0.3},
stepheight = 0.6,
eye_height = 1.625,
})
end
player_model[name] = model_name
end
function player_api.set_textures(player, textures)
local name = player:get_player_name()
local model = models[player_model[name]]
local model_textures = model and model.textures or nil
player_textures[name] = textures or model_textures
player:set_properties({textures = textures or model_textures,})
end
function player_api.set_animation(player, anim_name, speed)
local name = player:get_player_name()
if player_anim[name] == anim_name then
return
end
local model = player_model[name] and models[player_model[name]]
if not (model and model.animations[anim_name]) then
return
end
local anim = model.animations[anim_name]
player_anim[name] = anim_name
player:set_animation(anim, speed or model.animation_speed, animation_blend)
end
minetest.register_on_leaveplayer(function(player)
local name = player:get_player_name()
player_model[name] = nil
player_anim[name] = nil
player_textures[name] = nil
end)
-- Localize for better performance.
local player_set_animation = player_api.set_animation
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
minetest.register_globalstep(function(dtime)
for _, player in pairs(minetest.get_connected_players()) do
local name = player:get_player_name()
local model_name = player_model[name]
local model = model_name and models[model_name]
if model and not player_attached[name] then
local controls = player:get_player_control()
local walking = false
local animation_speed_mod = model.animation_speed or 30
-- Determine if the player is walking
if controls.up or controls.down or controls.left or controls.right then
walking = true
end
-- Determine if the player is sneaking, and reduce animation speed if so
if controls.sneak then
animation_speed_mod = animation_speed_mod / 2
end
-- Apply animations based on what the player is doing
if player:get_hp() == 0 then
player_set_animation(player, "lay")
elseif walking then
if player_sneak[name] ~= controls.sneak then
player_anim[name] = nil
player_sneak[name] = controls.sneak
end
if controls.LMB then
player_set_animation(player, "walk_mine", animation_speed_mod)
else
player_set_animation(player, "walk", animation_speed_mod)
end
elseif controls.LMB then
player_set_animation(player, "mine")
else
player_set_animation(player, "stand", animation_speed_mod)
end
end
end
end)