mirror of
https://git.minetest.land/VoxeLibre/VoxeLibre.git
synced 2024-09-19 12:01:54 +02:00
252 lines
6.5 KiB
Lua
252 lines
6.5 KiB
Lua
local math_random = math.random
|
|
|
|
local vector_multiply = vector.multiply
|
|
local vector_add = vector.add
|
|
|
|
local minetest_yaw_to_dir = minetest.yaw_to_dir
|
|
local minetest_get_item_group = minetest.get_item_group
|
|
local minetest_get_node = minetest.get_node
|
|
local minetest_line_of_sight = minetest.line_of_sight
|
|
|
|
local DOUBLE_PI = math.pi * 2
|
|
local THIRTY_SECONDTH_PI = DOUBLE_PI * 0.03125
|
|
|
|
|
|
--[[
|
|
_ _
|
|
| | | |
|
|
| | __ _ _ __ __| |
|
|
| | / _` | '_ \ / _` |
|
|
| |___| (_| | | | | (_| |
|
|
\_____/\__,_|_| |_|\__,_|
|
|
]]
|
|
|
|
--this is basically reverse jump_check
|
|
local cliff_check = function(self,dtime)
|
|
--mobs will flip out if they are falling without this
|
|
if self.object:get_velocity().y ~= 0 then
|
|
return false
|
|
end
|
|
|
|
local pos = self.object:get_pos()
|
|
local dir = minetest_yaw_to_dir(self.yaw)
|
|
local collisionbox = self.object:get_properties().collisionbox
|
|
local radius = collisionbox[4] + 0.5
|
|
|
|
dir = vector_multiply(dir,radius)
|
|
|
|
local free_fall, blocker = minetest_line_of_sight(
|
|
{x = pos.x + dir.x, y = pos.y, z = pos.z + dir.z},
|
|
{x = pos.x + dir.x, y = pos.y - self.fear_height, z = pos.z + dir.z})
|
|
|
|
return free_fall
|
|
end
|
|
|
|
--a simple helper function which is too small to move into movement.lua
|
|
local quick_rotate_45 = function(self,dtime)
|
|
self.yaw = self.yaw + THIRTY_SECONDTH_PI
|
|
if self.yaw > DOUBLE_PI then
|
|
self.yaw = self.yaw - DOUBLE_PI
|
|
end
|
|
end
|
|
|
|
--check if a mob needs to jump
|
|
local jump_check = function(self,dtime)
|
|
|
|
local pos = self.object:get_pos()
|
|
pos.y = pos.y + 0.1
|
|
local dir = minetest_yaw_to_dir(self.yaw)
|
|
|
|
local collisionbox = self.object:get_properties().collisionbox
|
|
local radius = collisionbox[4] + 0.5
|
|
|
|
vector_multiply(dir, radius)
|
|
|
|
--only jump if there's a node and a non-solid node above it
|
|
local test_dir = vector.add(pos,dir)
|
|
|
|
local green_flag_1 = minetest_get_item_group(minetest_get_node(test_dir).name, "solid") ~= 0
|
|
|
|
test_dir.y = test_dir.y + 1
|
|
|
|
local green_flag_2 = minetest_get_item_group(minetest_get_node(test_dir).name, "solid") == 0
|
|
|
|
if green_flag_1 and green_flag_2 then
|
|
--can jump over node
|
|
return(1)
|
|
elseif green_flag_1 and not green_flag_2 then
|
|
--wall in front of mob
|
|
return(2)
|
|
end
|
|
|
|
--nothing to jump over
|
|
return(0)
|
|
end
|
|
|
|
|
|
|
|
-- state switching logic (stand, walk, run, attacks)
|
|
local land_state_list_wandering = {"stand", "walk"}
|
|
|
|
local land_state_switch = function(self, dtime)
|
|
self.state_timer = self.state_timer - dtime
|
|
if self.wandering and self.state_timer <= 0 then
|
|
self.state_timer = math.random(4,10) + math.random()
|
|
self.state = land_state_list_wandering[math.random(1,#land_state_list_wandering)]
|
|
end
|
|
|
|
end
|
|
|
|
-- states are executed here
|
|
local land_state_execution = function(self,dtime)
|
|
|
|
--local yaw = self.object:get_yaw() or 0
|
|
|
|
|
|
if self.state == "stand" then
|
|
|
|
--do animation
|
|
mobs.set_mob_animation(self, "stand")
|
|
|
|
--set the velocity of the mob
|
|
mobs.set_velocity(self,0)
|
|
|
|
elseif self.state == "walk" then
|
|
|
|
self.walk_timer = self.walk_timer - dtime
|
|
|
|
--reset the walk timer
|
|
if self.walk_timer <= 0 then
|
|
|
|
--re-randomize the walk timer
|
|
self.walk_timer = math.random(1,6) + math.random()
|
|
|
|
--set the mob into a random direction
|
|
self.yaw = (math_random() * (math.pi * 2))
|
|
end
|
|
|
|
--do animation
|
|
mobs.set_mob_animation(self, "walk")
|
|
|
|
--enable rotation locking
|
|
mobs.movement_rotation_lock(self)
|
|
|
|
--check for nodes to jump over
|
|
local node_in_front_of = jump_check(self)
|
|
|
|
if node_in_front_of == 1 then
|
|
mobs.jump(self)
|
|
|
|
--turn if on the edge of cliff
|
|
--(this is written like this because unlike
|
|
--jump_check which simply tells the mob to jump
|
|
--this requires a mob to turn, removing the
|
|
--ease of a full implementation for it in a single
|
|
--function)
|
|
elseif node_in_front_of == 2 or (self.fear_height ~= 0 and cliff_check(self,dtime)) then
|
|
--turn 45 degrees if so
|
|
quick_rotate_45(self,dtime)
|
|
--stop the mob so it doesn't fall off
|
|
mobs.set_velocity(self,0)
|
|
end
|
|
|
|
--only move forward if path is clear
|
|
if node_in_front_of == 0 or node_in_front_of == 1 then
|
|
--set the velocity of the mob
|
|
mobs.set_velocity(self,self.walk_velocity)
|
|
end
|
|
|
|
elseif self.state == "run" then
|
|
|
|
print("run")
|
|
|
|
elseif self.state == "attack" then
|
|
|
|
print("attack")
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
--[[
|
|
______ _ _ _______ _ _
|
|
| ___| | (_) / / ___| (_) (_)
|
|
| |_ | |_ _ _ _ __ __ _ / /\ `--.__ ___ _ __ ___ _ __ ___ _ _ __ __ _
|
|
| _| | | | | | | '_ \ / _` | / / `--. \ \ /\ / / | '_ ` _ \| '_ ` _ \| | '_ \ / _` |
|
|
| | | | |_| | | | | | (_| |/ / /\__/ /\ V V /| | | | | | | | | | | | | | | | (_| |
|
|
\_| |_|\__, |_|_| |_|\__, /_/ \____/ \_/\_/ |_|_| |_| |_|_| |_| |_|_|_| |_|\__, |
|
|
__/ | __/ | __/ |
|
|
|___/ |___/ |___/
|
|
]]--
|
|
|
|
|
|
|
|
-- state switching logic (stand, walk, run, attacks)
|
|
local fly_state_list_wandering = {"stand", "walk"}
|
|
|
|
local fly_state_switch = function(self, dtime)
|
|
self.state_timer = self.state_timer - dtime
|
|
if self.wandering and self.state_timer <= 0 then
|
|
self.state_timer = math.random(4,10) + math.random()
|
|
self.state = land_state_list_wandering[math.random(1,#land_state_list_wandering)]
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
local fly_state_execution = function(self,dtime)
|
|
|
|
|
|
end
|
|
|
|
local fly_state_switch = function(self, dtime)
|
|
|
|
|
|
end
|
|
|
|
--[[
|
|
___ ___ _ _ _
|
|
| \/ | (_) | | (_)
|
|
| . . | __ _ _ _ __ | | ___ __ _ _ ___
|
|
| |\/| |/ _` | | '_ \ | | / _ \ / _` | |/ __|
|
|
| | | | (_| | | | | | | |___| (_) | (_| | | (__
|
|
\_| |_/\__,_|_|_| |_| \_____/\___/ \__, |_|\___|
|
|
__/ |
|
|
|___/
|
|
]]
|
|
|
|
--the main loop
|
|
mobs.mob_step = function(self, dtime)
|
|
|
|
--do not continue if non-existent
|
|
if not self or not self.object or not self.object:get_luaentity() then
|
|
return false
|
|
end
|
|
|
|
--print(self.object:get_yaw())
|
|
|
|
|
|
|
|
--swimming/flying
|
|
if self.fly then
|
|
fly_state_switch(self, dtime)
|
|
fly_state_execution(self, dtime)
|
|
--regular mobs that walk around
|
|
else
|
|
land_state_switch(self, dtime)
|
|
land_state_execution(self,dtime)
|
|
end
|
|
|
|
|
|
-- can mob be pushed, if so calculate direction -- do this last (overrides everything)
|
|
if self.pushable then
|
|
mobs.collision(self)
|
|
end
|
|
|
|
self.old_velocity = self.object:get_velocity()
|
|
end
|