252 lines
6.0 KiB
Lua
252 lines
6.0 KiB
Lua
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--
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-- Helper functions
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--
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local function get_sign(i)
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if i == 0 then
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return 0
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else
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return i/math.abs(i)
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end
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end
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local function get_velocity(vx, vy, vz, yaw)
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local x = math.cos(yaw)*vx+math.cos(math.pi/2+yaw)*vz
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local z = math.sin(yaw)*vx+math.sin(math.pi/2+yaw)*vz
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return {x=x, y=vy, z=z}
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end
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local function get_v(v)
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return math.sqrt(v.x^2+v.z^2)
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end
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--
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-- Heli entity
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--
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local heli = {
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physical = true,
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collisionbox = {-1,-0.6,-1, 1,0.3,1},
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--Just copy from lua api for test
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collide_with_objects = true,
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weight = 5,
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visual = "mesh",
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mesh = "root.x",
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--Player
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driver = nil,
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--Heli mesh
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model = nil,
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--In progress
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motor = nil,
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left = true,
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timer=0,
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--Rotation
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yaw=0,
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--Detect hit an object or node
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prev_y=0,
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--Speeds
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v = {x=0,y=0,z=0}
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}
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local heliModel = {
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visual = "mesh",
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mesh = "heli.x",
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textures = {"blades.png","blades.png","heli.png","Glass.png"},
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}
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local motor = {
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physical = true,
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collisionbox = {-2,0.5,-1, 1,1,1},
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visual = "mesh",
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mesh = "motor.x",
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textures = {"motor.png"},
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driver = nil,
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left = true,
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timer=0,
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vx = 0,--Velo. for/back-ward
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vy = 0,--Velo. up/down
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vz = 0--Velo. side
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}
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function heli:on_rightclick(clicker)
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if not clicker or not clicker:is_player() then
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return
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end
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if self.driver and clicker == self.driver then
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self.driver = nil
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clicker:set_detach()
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self.model:set_animation({x=0,y=1},0, 0)
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elseif not self.driver then
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self.model:set_animation({x=0,y=10},10, 0)
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self.driver = clicker
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clicker:set_attach(self.object, "Root", {x=0,y=0,z=0}, {x=0,y=0,z=0})
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--self.object:setyaw(clicker:get_look_yaw())
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end
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end
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function heli:on_activate(staticdata, dtime_s)
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self.object:set_armor_groups({immortal=1})
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self.prev_y=self.object:getpos().y
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if self.model == nil then
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--if minetest.get_objects_inside_radius(self.object:getpos(), 1)
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self.model=minetest.env:add_entity(self.object:getpos(), "tutorial:heliModel")
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self.model:set_attach(self.object, "Root", {x=0,y=0,z=0}, {x=0,y=0,z=0})
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end
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if staticdata then
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self.v = tonumber(staticdata)
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end
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end
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function heli:get_staticdata()
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return tostring(v)
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end
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function heli:on_punch(puncher, time_from_last_punch, tool_capabilities, direction)
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if self.model ~= nil then
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self.model:remove()
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end
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self.object:remove()
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if puncher and puncher:is_player() then
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--puncher:get_inventory():add_item("main", "helicopter:heli")
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end
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end
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function heliModel:on_punch(puncher, time_from_last_punch, tool_capabilities, direction)
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self.object:remove()
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end
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function heli:on_step(dtime)
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--Prevent shaking heli while sitting in it
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--Prevent multi heli control bug
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if self.driver and ( math.abs(self.driver:getpos().x-self.object:getpos().x)>10*dtime or math.abs(self.driver:getpos().y-self.object:getpos().y)>10*dtime or math.abs(self.driver:getpos().z-self.object:getpos().z)>10*dtime) then
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self.driver = nil
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end
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if self.driver then
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self.yaw = self.driver:get_look_yaw()
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v = self.object:getvelocity()
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local ctrl = self.driver:get_player_control()
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--Forward/backward
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if ctrl.up then
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self.v.x = self.v.x + math.cos(self.driver:get_look_yaw())*0.1
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self.v.z = self.v.z + math.sin(self.driver:get_look_yaw())*0.1
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end
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if ctrl.down then
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self.v.x = self.v.x-math.cos(self.driver:get_look_yaw())*0.1
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self.v.z = self.v.z-math.sin(self.driver:get_look_yaw())*0.1
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end
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--Left/right
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if ctrl.left then
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self.v.z = self.v.z+math.cos(self.driver:get_look_yaw())*0.1
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self.v.x = self.v.x+math.sin(math.pi+self.driver:get_look_yaw())*0.1
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end
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if ctrl.right then
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self.v.z = self.v.z-math.cos(self.driver:get_look_yaw())*0.1
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self.v.x = self.v.x-math.sin(math.pi+self.driver:get_look_yaw())*0.1
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end
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--up/down
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if ctrl.jump then
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if self.v.y<1.5 then
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self.v.y = self.v.y+0.2
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end
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end
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if ctrl.sneak then
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if self.v.y>-1.5 then
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self.v.y = self.v.y-0.2
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end
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end
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--
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--Speed limit
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if math.abs(self.v.x) > 4.5 then
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self.v.x = 4.5*get_sign(self.v.x)
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end
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if math.abs(self.v.z) > 4.5 then
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self.v.z = 4.5*get_sign(self.v.z)
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end
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end
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--Decelerating
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local sx=get_sign(self.v.x)
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self.v.x = self.v.x - 0.02*sx
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local sz=get_sign(self.v.z)
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self.v.z = self.v.z - 0.02*sz
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local sy=get_sign(self.v.y)
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self.v.y = self.v.y-0.01*sy
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--Stop
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if sx ~= get_sign(self.v.x) then
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self.v.x = 0
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end
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if sz ~= get_sign(self.v.z) then
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self.v.z = 0
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end
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--Speed limit
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if math.abs(self.v.x) > 4.5 then
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self.v.x = 4.5*get_sign(self.v.x)
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end
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if math.abs(self.v.z) > 4.5 then
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self.v.z = 4.5*get_sign(self.v.z)
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end
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if math.abs(self.v.y) > 4.5 then
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self.v.z = 4.5*get_sign(self.v.z)
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end
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--Set speed to entity
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self.object:setvelocity({x=self.v.x, y=self.v.y,z=self.v.z})
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--Model rotation
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--[[if self.driver then
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self.model:set_attach(self.object,"Root",
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{x=-(self.driver:getpos().x-self.object:getpos().x)*dtime,
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y=-(self.driver:getpos().z-self.object:getpos().z)*dtime,
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z=-(self.driver:getpos().y-self.object:getpos().y)*dtime}, {
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x=-90+self.v.z*5*math.cos(self.yaw)-self.v.x*5*math.sin(self.yaw),
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y=0-self.v.z*5*math.sin(self.yaw)-self.v.x*5*math.cos(self.yaw),
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z=self.yaw*57})
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else]]--
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self.model:set_attach(self.object,"Root", {x=0,y=0,z=0}, {
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x=-90+self.v.z*5*math.cos(self.yaw)-self.v.x*5*math.sin(self.yaw),
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y=0-self.v.z*5*math.sin(self.yaw)-self.v.x*5*math.cos(self.yaw),
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z=self.yaw*57})
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--end
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end
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--
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--Registration
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--
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minetest.register_entity("tutorial:heli", heli)
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minetest.register_entity("tutorial:heliModel", heliModel)
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minetest.register_entity("tutorial:motor", motor)
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--minetest.register_entity("helicopter:rocket", rocket)
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minetest.register_craftitem("tutorial:heli", {
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description = "Helicopter",
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inventory_image = "heli_inv.png",
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wield_image = "heli_inv.png",
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wield_scale = {x=1, y=1, z=1},
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liquids_pointable = false,
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on_place = function(itemstack, placer, pointed_thing)
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if pointed_thing.type ~= "node" then
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return
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end
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pointed_thing.under.y = pointed_thing.under.y+1
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minetest.env:add_entity(pointed_thing.under, "tutorial:heli")
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--minetest.env:add_entity(pointed_thing.under, "helicopter:motor")
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--itemstack:take_item()
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return itemstack
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end,
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})
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