maidroid/modules/chasing_player_module.lua
2016-06-08 14:48:06 +09:00

76 lines
2.5 KiB
Lua

------------------------------------------------------------
-- Copyright (c) 2016 tacigar
-- https://github.com/tacigar/maidroid
------------------------------------------------------------
local util = maidroid.util
local _aux = maidroid.modules._aux
local state = { idle = 0, chase = 1}
local view_of_range = 7
local stop_of_range = 2
maidroid.register_module("maidroid:chasing_player_module", {
description = "Maidroid Module : Chasing Player",
inventory_image = "maidroid_chasing_player_module.png",
initialize = function(self)
self.state = state.idle
self.object:setacceleration{x = 0, y = -10, z = 0}
self.object:setvelocity{x = 0, y = 0, z = 0}
end,
finalize = function(self)
self.state = nil
self.object:setvelocity{x = 0, y = 0, z = 0}
end,
on_step = function(self, dtime)
local pos = self.object:getpos()
local all_objects = minetest.get_objects_inside_radius(pos, view_of_range)
local player = nil
for _, obj in pairs(all_objects) do
if obj:is_player() then player = obj; break end
end
if not player then
self.object:set_animation(maidroid.animations.stand, 15, 0)
self.state = state.idle
return
end
local ppos = player:getpos()
local dir = vector.subtract(ppos, pos)
local vel = self.object:getvelocity()
if (vector.length(dir) < stop_of_range) then
if self.state == state.chase then
self.object:set_animation(maidroid.animations.stand, 15, 0)
self.state = state.idle
self.object:setvelocity({x = 0, y = vel.y, z = 0})
end
else
if self.state == state.idle then
self.object:set_animation(maidroid.animations.walk, 15, 0)
self.state = state.chase
end
self.object:setvelocity({x = dir.x, y = vel.y, z = dir.z})
end
local yaw = math.atan2(dir.z, dir.x) + math.pi/2
self.object:setyaw(yaw)
-- jump process
if vel.y == 0 and self.state == state.chase then
local rdir = vector.round(dir)
local front_vec = { x = 0, y = 0, z = 0 }
if math.abs((rdir.x / (math.abs(rdir.x) + math.abs(rdir.z)))) > 0.5 then
if rdir.x > 0 then front_vec.x = 1 else front_vec.x = -1 end
end
if math.abs((rdir.z / (math.abs(rdir.x) + math.abs(rdir.z)))) > 0.5 then
if rdir.z > 0 then front_vec.z = 1 else front_vec.z = -1 end
end
local front_pos = vector.add(vector.round(pos), front_vec)
if minetest.get_node(front_pos).name ~= "air" then
self.object:setvelocity({x = dir.x, y = 5, z = dir.z})
end
end
end,
})