mobs_redo/mount.lua

510 line
9.8 KiB
Lua

-- lib_mount by Blert2112 (edited by TenPlus1)
local is_mc2 = minetest.get_modpath("mcl_mobs") -- MineClone2 check
-- one of these is needed to ride mobs, otherwise no riding for you
if not minetest.get_modpath("player_api") and not is_mc2 then
function mobs.attach() end
function mobs.detach() end
function mobs.fly() end
function mobs.drive() end
return
end
-- Localise some functions
local abs, cos, floor, sin, sqrt, pi =
math.abs, math.cos, math.floor, math.sin, math.sqrt, math.pi
--
-- Helper functions
--
local node_ok = function(pos, fallback)
fallback = fallback or mobs.fallback_node
local node = minetest.get_node_or_nil(pos)
if node and minetest.registered_nodes[node.name] then
return node
end
return {name = fallback}
end
local function node_is(entity)
if not entity.standing_on then return "other" end
if entity.standing_on == "air" then
return "air"
end
if minetest.get_item_group(entity.standing_on, "lava") ~= 0 then
return "lava"
end
if minetest.get_item_group(entity.standing_on, "liquid") ~= 0 then
return "liquid"
end
if minetest.registered_nodes[entity.standing_on].walkable == true then
return "walkable"
end
return "other"
end
local function get_sign(i)
i = i or 0
if i == 0 then
return 0
else
return i / abs(i)
end
end
local function get_velocity(v, yaw, y)
local x = -sin(yaw) * v
local z = cos(yaw) * v
return {x = x, y = y, z = z}
end
local function get_v(v)
return sqrt(v.x * v.x + v.z * v.z)
end
local function force_detach(player)
local attached_to = player and player:get_attach()
if not attached_to then
return
end
local entity = attached_to:get_luaentity()
if entity and entity.driver and entity.driver == player then
entity.driver = nil
end
player:set_detach()
local name = player:get_player_name()
if is_mc2 then
mcl_player.player_attached[player:get_player_name()] = false
mcl_player.player_set_animation(player, "stand", 30)
else
player_api.player_attached[name] = false
player_api.set_animation(player, "stand", 30)
end
player:set_eye_offset({x = 0, y = 0, z = 0}, {x = 0, y = 0, z = 0})
player:set_properties({visual_size = {x = 1, y = 1}})
end
minetest.register_on_leaveplayer(function(player)
force_detach(player)
end)
minetest.register_on_shutdown(function()
local players = minetest.get_connected_players()
for i = 1, #players do
force_detach(players[i])
end
end)
minetest.register_on_dieplayer(function(player)
force_detach(player)
return true
end)
-- Just for correct detaching
local function find_free_pos(pos)
local check = {
{x = 1, y = 0, z = 0},
{x = 1, y = 1, z = 0},
{x = -1, y = 0, z = 0},
{x = -1, y = 1, z = 0},
{x = 0, y = 0, z = 1},
{x = 0, y = 1, z = 1},
{x = 0, y = 0, z = -1},
{x = 0, y = 1, z = -1}
}
for _, c in pairs(check) do
local npos = {x = pos.x + c.x, y = pos.y + c.y, z = pos.z + c.z}
local node = minetest.get_node_or_nil(npos)
if node and node.name then
local def = minetest.registered_nodes[node.name]
if def and not def.walkable and def.liquidtype == "none" then
return npos
end
end
end
return pos
end
-- are we a real player ?
local function is_player(player)
if player and type(player) == "userdata" and minetest.is_player(player) then
return true
end
end
function mobs.attach(entity, player)
if not player then return end
entity.player_rotation = entity.player_rotation or {x = 0, y = 0, z = 0}
entity.driver_attach_at = entity.driver_attach_at or {x = 0, y = 0, z = 0}
entity.driver_eye_offset = entity.driver_eye_offset or {x = 0, y = 0, z = 0}
entity.driver_scale = entity.driver_scale or {x = 1, y = 1}
local rot_view = 0
if entity.player_rotation.y == 90 then
rot_view = pi / 2
end
local attach_at = entity.driver_attach_at
local eye_offset = entity.driver_eye_offset
entity.driver = player
force_detach(player)
if is_mc2 then
mcl_player.player_attached[player:get_player_name()] = true
else
player_api.player_attached[player:get_player_name()] = true
end
player:set_attach(entity.object, "", attach_at, entity.player_rotation)
player:set_eye_offset(eye_offset, {x = 0, y = 0, z = 0})
player:set_properties({
visual_size = {
x = entity.driver_scale.x,
y = entity.driver_scale.y
}
})
minetest.after(0.2, function()
if is_player(player) then
if is_mc2 then
mcl_player.player_set_animation(player, "sit_mount" , 30)
else
player_api.set_animation(player, "sit", 30)
end
end
end)
player:set_look_horizontal(entity.object:get_yaw() - rot_view)
end
function mobs.detach(player)
force_detach(player)
minetest.after(0.1, function()
if player and player:is_player() then
local pos = find_free_pos(player:get_pos())
pos.y = pos.y + 0.5
player:set_pos(pos)
end
end)
end
function mobs.drive(entity, moving_anim, stand_anim, can_fly, dtime)
local yaw = entity.object:get_yaw() or 0
local rot_view = 0
if entity.player_rotation.y == 90 then
rot_view = pi / 2
end
local acce_y = 0
local velo = entity.object:get_velocity() ; if not velo then return end
entity.v = get_v(velo) * get_sign(entity.v)
-- process controls
if entity.driver then
local ctrl = entity.driver:get_player_control()
if ctrl.up then -- move forwards
entity.v = entity.v + entity.accel * dtime
elseif ctrl.down then -- move backwards
if entity.max_speed_reverse == 0 and entity.v == 0 then
return
end
entity.v = entity.v - entity.accel * dtime
end
-- mob rotation
local horz
if entity.alt_turn == true then
horz = yaw
if ctrl.left then
horz = horz + 0.05
elseif ctrl.right then
horz = horz - 0.05
end
else
horz = entity.driver:get_look_horizontal() or 0
end
entity.object:set_yaw(horz - entity.rotate)
if can_fly then
if ctrl.jump then -- fly up
velo.y = velo.y + 1
if velo.y > entity.accel then velo.y = entity.accel end
elseif velo.y > 0 then
velo.y = velo.y - dtime
if velo.y < 0 then velo.y = 0 end
end
if ctrl.sneak then -- fly down
velo.y = velo.y - 1
if velo.y < -entity.accel then velo.y = -entity.accel end
elseif velo.y < 0 then
velo.y = velo.y + dtime
if velo.y > 0 then velo.y = 0 end
end
else
if ctrl.jump then -- jump (only when standing on solid surface)
if velo.y == 0
and entity.standing_on ~= "air"
and entity.standing_on ~= "ignore"
and minetest.get_item_group(entity.standing_on, "liquid") == 0 then
velo.y = velo.y + entity.jump_height
acce_y = acce_y + (acce_y * 3) + 1
end
end
end
end
-- if not moving then set animation and return
if entity.v == 0 and velo.x == 0 and velo.y == 0 and velo.z == 0 then
if stand_anim then
entity:set_animation(stand_anim)
end
return
end
-- set moving animation
if moving_anim then
entity:set_animation(moving_anim)
end
-- Stop!
local s = get_sign(entity.v)
entity.v = entity.v - 0.02 * s
if s ~= get_sign(entity.v) then
entity.object:set_velocity({x = 0, y = 0, z = 0})
entity.v = 0
return
end
-- enforce speed limit forward and reverse
if entity.v > entity.max_speed_forward then
entity.v = entity.max_speed_forward
elseif entity.v < -entity.max_speed_reverse then
entity.v = -entity.max_speed_reverse
end
-- Set position, velocity and acceleration
local p = entity.object:get_pos()
if not p then return end
local new_acce = {x = 0, y = entity.fall_speed, z = 0}
p.y = p.y - 0.5
local ni = node_is(entity)
local v = entity.v
if ni == "air" then
if can_fly == true then
new_acce.y = 0
end
elseif ni == "liquid" or ni == "lava" then
local terrain_type = entity.terrain_type
if terrain_type == 2 or terrain_type == 3 then
new_acce.y = 0
p.y = p.y + 1
if minetest.get_item_group(entity.standing_in, "liquid") ~= 0 then
if velo.y >= 5 then
velo.y = 5
elseif velo.y < 0 then
new_acce.y = 20
else
new_acce.y = 5
end
else
if abs(velo.y) < 1 then
local pos = entity.object:get_pos()
if not pos then return end
pos.y = floor(pos.y) + 0.5
entity.object:set_pos(pos)
velo.y = 0
end
end
else
v = v * 0.25
end
end
local new_velo = get_velocity(v, yaw - rot_view, velo.y)
new_acce.y = new_acce.y + acce_y
entity.object:set_velocity(new_velo)
entity.object:set_acceleration(new_acce)
entity.v2 = v
end
-- directional flying routine by D00Med (edited by TenPlus1)
function mobs.fly(entity, _, speed, shoots, arrow, moving_anim, stand_anim)
local ctrl = entity.driver:get_player_control() ; if not ctrl then return end
local velo = entity.object:get_velocity() ; if not velo then return end
local dir = entity.driver:get_look_dir()
local yaw = entity.driver:get_look_horizontal() + 1.57
if ctrl.up then
entity.object:set_velocity({
x = dir.x * speed,
y = dir.y * speed + 2,
z = dir.z * speed
})
elseif ctrl.down then
entity.object:set_velocity({
x = -dir.x * speed,
y = dir.y * speed + 2,
z = -dir.z * speed
})
elseif not ctrl.down or ctrl.up or ctrl.jump then
entity.object:set_velocity({x = 0, y = -2, z = 0})
end
entity.object:set_yaw(yaw + pi + pi / 2 - entity.rotate)
-- firing arrows
if ctrl.LMB and ctrl.sneak and shoots then
local pos = entity.object:get_pos()
local obj = minetest.add_entity({
x = pos.x + 0 + dir.x * 2.5,
y = pos.y + 1.5 + dir.y,
z = pos.z + 0 + dir.z * 2.5}, arrow)
local ent = obj:get_luaentity()
if ent then
ent.switch = 1 -- for mob specific arrows
ent.owner_id = tostring(entity.object) -- so arrows dont hurt entity you are riding
local vec = {x = dir.x * 6, y = dir.y * 6, z = dir.z * 6}
yaw = entity.driver:get_look_horizontal()
obj:set_yaw(yaw + pi / 2)
obj:set_velocity(vec)
else
obj:remove()
end
end
-- change animation if stopped
if velo.x == 0 and velo.y == 0 and velo.z == 0 then
entity:set_animation(stand_anim)
else
-- moving animation
entity:set_animation(moving_anim)
end
end