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https://github.com/APercy/automobiles_pck
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first functions to detect wheels positions
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automobiles/automobiles_custom_physics.lua
Executable file → Normal file
0
automobiles/automobiles_custom_physics.lua
Executable file → Normal file
66
automobiles/custom_physics.lua
Executable file
66
automobiles/custom_physics.lua
Executable file
@ -0,0 +1,66 @@
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local min = math.min
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local abs = math.abs
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function automobiles.physics(self)
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local friction = 0.99
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local vel=self.object:get_velocity()
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-- dumb friction
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if self.isonground and not self.isinliquid then
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--minetest.chat_send_all('okay')
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self.object:set_velocity({x=vel.x*friction,
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y=vel.y,
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z=vel.z*friction})
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end
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-- bounciness
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if self.springiness and self.springiness > 0 then
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local vnew = vector.new(vel)
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if not self.collided then -- ugly workaround for inconsistent collisions
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for _,k in ipairs({'y','z','x'}) do
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if vel[k]==0 and abs(self.lastvelocity[k])> 0.1 then
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vnew[k]=-self.lastvelocity[k]*self.springiness
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end
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end
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end
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if not vector.equals(vel,vnew) then
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self.collided = true
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else
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if self.collided then
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vnew = vector.new(self.lastvelocity)
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end
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self.collided = false
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end
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self.object:set_velocity(vnew)
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end
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-- buoyancy
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local surface = nil
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local surfnodename = nil
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local spos = mobkit.get_stand_pos(self)
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spos.y = spos.y+0.01
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-- get surface height
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local snodepos = mobkit.get_node_pos(spos)
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local surfnode = mobkit.nodeatpos(spos)
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while surfnode and (surfnode.drawtype == 'liquid' or surfnode.drawtype == 'flowingliquid') do
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surfnodename = surfnode.name
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surface = snodepos.y +0.5
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if surface > spos.y+self.height then break end
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snodepos.y = snodepos.y+1
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surfnode = mobkit.nodeatpos(snodepos)
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end
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self.isinliquid = surfnodename
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if surface then -- standing in liquid
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-- self.isinliquid = true
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local submergence = min(surface-spos.y,self.height)/self.height
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-- local balance = self.buoyancy*self.height
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local buoyacc = mobkit.gravity*(self.buoyancy-submergence)
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mobkit.set_acceleration(self.object,
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{x=-vel.x*self.water_drag,y=buoyacc-vel.y*abs(vel.y)*0.4,z=-vel.z*self.water_drag})
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else
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self.object:set_acceleration({x=0,y=mobkit.gravity,z=0})
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end
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end
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134
automobiles/ground_detection.lua
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134
automobiles/ground_detection.lua
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@ -0,0 +1,134 @@
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--[[
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os experimentos mostraram que a deteção de uma posição de um item atachado retorna a do objeto pai, então pegar a posição das rodas não presta
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proximo experimento sera mis complexo: pegar o yaw do carro, colocar o entreeixos e afastamento das rodas no eixo X e calcular a posição com trigonometria
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]]--
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--lets assume that the rear axis is at object center, so we will use the distance only for front wheels
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function automobiles.ground_get_distances(self, radius, axis_length, axis_distance)
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--[[local lf = self.lf_wheel:get_pos() -- left front
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--automobiles.get_wheel_distance_from_ground(lf, radius)
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local rf = self.rf_wheel:get_pos() -- right front
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--automobiles.get_wheel_distance_from_ground(rf, radius)
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--minetest.chat_send_all("x ".. lf.x .." x " .. rf.x .. "\ny " .. lf.y .. " y " .. rf.y .. "\nz " .. lf.z .. " z " .. rf.z)
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local lr = self.lr_wheel:get_pos() -- left rear
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automobiles.get_wheel_distance_from_ground(lr, radius)
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local rr = self.rr_wheel:get_pos() -- right rear
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automobiles.get_wheel_distance_from_ground(rr, radius)]]--
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--[[
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--minetest.raycast(pos1, pos2, objects, liquids)
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for pointed_thing in minetest.raycast(p_pos, e_pos, true, false) do
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automobiles.handle_ray(reference,pointed_thing)
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end]]--
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--segunda tentativa fracassada:
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--[[local node = automobiles.get_node_below(self.object)
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if node then
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minetest.chat_send_all(node.name)
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end]]--
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local mid_axis = (axis_length / 2)/10
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local hip = axis_distance / 10
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local yaw = self.object:get_yaw()
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local pos = self.object:get_pos()
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local f_x, f_z = automobiles.get_xz_from_hipotenuse(pos.x, pos.z, yaw, hip)
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local x, f_y = automobiles.get_xz_from_hipotenuse(pos.x, pos.y, self._pitch, hip) --the x is only a mock
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local left_front = {x=0, y=f_y, z=0}
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left_front.x, left_front.z = automobiles.get_xz_from_hipotenuse(f_x, f_z, yaw-90, mid_axis)
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local right_front = {x=0, y=f_y, z=0}
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right_front.x, right_front.z = automobiles.get_xz_from_hipotenuse(f_x, f_z, yaw+90, mid_axis)
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local r_x, r_z = automobiles.get_xz_from_hipotenuse(pos.x, pos.z, yaw, 0)
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local r_y = 0
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x, r_y = automobiles.get_xz_from_hipotenuse(pos.x, pos.y, self._pitch, 0) --the x is only a mock
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local left_rear = {x=0, y=r_y, z=0}
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left_rear.x, left_rear.z = automobiles.get_xz_from_hipotenuse(r_x, r_z, yaw-90, mid_axis)
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local right_rear = {x=0, y=r_y, z=0}
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right_rear.x, right_rear.z = automobiles.get_xz_from_hipotenuse(r_x, r_z, yaw+90, mid_axis)
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--minetest.chat_send_all("front x ".. right_front.x .." x " .. left_front.x .. " --- z " .. right_front.z .. " z " .. left_front.z .. " Y: " .. right_front.y)
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--minetest.chat_send_all("rear x ".. right_rear.x .." x " .. left_rear.x .. " --- z " .. right_rear.z .. " z " .. left_rear.z .. " Y: " .. right_rear.y)
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local node_bellow = automobiles.get_node_below(left_front, 0.5)
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if node_bellow then
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--minetest.chat_send_all("bellow: " .. node_bellow.name)
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local node = minetest.get_node(left_front)
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--minetest.chat_send_all("level: " .. node.name)
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end
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end
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function automobiles.get_xz_from_hipotenuse(orig_x, orig_z, yaw, distance)
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local z = (math.cos(yaw)*distance) + orig_z
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local x = (math.sin(yaw)*distance) + orig_x
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return x, z
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end
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function automobiles.get_wheel_distance_from_ground(pos, radius)
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local touch_pos = pos
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--[[touch_pos.y = touch_pos.y - radius
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local max_search_pos = touch_pos
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max_search_pos.y = max_search_pos.y - 0.9
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for pointed_thing in minetest.raycast(touch_pos, max_search_pos, true, false) do
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automobiles.handle_ray(pointed_thing)
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end]]--
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end
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function automobiles.handle_ray(pointed_thing)
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if pointed_thing.type == "node" then
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if pointed_thing.node_box then
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minetest.chat_send_all(minetest.debug(pointed_thing.node_box))
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end
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--[[if pointed_thing.ref ~= user and (not objs or objs and not objs[pointed_thing.ref])
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and (not calls or not calls.on_hit or check_bools(calls.on_hit, itemstack, user, pointed_thing.ref)) then
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local vel = user:get_player_velocity()
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local spd = math.sqrt((vel.x * vel.x) + (vel.z * vel.z))
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if vel.y <= -1 then
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for group, _ in pairs(def.damage_groups) do
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def.damage_groups[group] = def.damage_groups[group] * def.crit_mp
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end
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end
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pointed_thing.ref:punch(user, 1.0, {full_punch_interval = 1.0, damage_groups = def.damage_groups})
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if pointed_thing.ref:is_player() then
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pointed_thing.ref:add_player_velocity(vector.multiply(user:get_look_dir(), def.kb_mp * spd))
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else
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pointed_thing.ref:add_velocity(vector.multiply(user:get_look_dir(), def.kb_mp * spd))
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end
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end
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if objs then
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depth = depth + 1
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objs[pointed_thing.ref] = pointed_thing.ref
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return depth, objs
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end]]--
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end
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end
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function automobiles.get_node_below(pos, dist)
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local node = minetest.get_node(pos)
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local pos_below = pos
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pos_below.y = pos_below.y - (dist + 0.1)
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local node_below = minetest.get_node(pos_below)
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return node_below
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end
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@ -196,7 +196,8 @@ end
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dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "automobiles_custom_physics.lua")
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dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "automobiles_control.lua")
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dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "automobiles_fuel_management.lua")
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dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "custom_physics.lua")
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dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "control.lua")
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dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "fuel_management.lua")
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dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "ground_detection.lua")
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@ -12,9 +12,10 @@ roadster.max_fuel = 10
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roadster.front_wheel_xpos = 10.26
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roadster.rear_wheel_xpos = 10.26
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dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "automobiles_custom_physics.lua")
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dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "automobiles_control.lua")
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dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "automobiles_fuel_management.lua")
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dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "custom_physics.lua")
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dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "control.lua")
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dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "fuel_management.lua")
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dofile(minetest.get_modpath("automobiles") .. DIR_DELIM .. "ground_detection.lua")
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dofile(minetest.get_modpath("automobiles_roadster") .. DIR_DELIM .. "roadster_utilities.lua")
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dofile(minetest.get_modpath("automobiles_roadster") .. DIR_DELIM .. "roadster_entities.lua")
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@ -212,6 +212,8 @@ minetest.register_entity("automobiles_roadster:roadster", {
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_last_time_collision_snd = 0,
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_last_time_drift_snd = 0,
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_last_time_command = 0,
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_roll = math.rad(0),
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_pitch = math.rad(90),
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get_staticdata = function(self) -- unloaded/unloads ... is now saved
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return minetest.serialize({
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@ -252,7 +254,7 @@ minetest.register_entity("automobiles_roadster:roadster", {
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self.top1 = top1
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local front_suspension=minetest.add_entity(self.object:get_pos(),'automobiles_roadster:front_suspension')
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front_suspension:set_attach(self.object,'',{x=0,y=0,z=25.5},{x=0,y=0,z=0})
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front_suspension:set_attach(self.object,'',{x=0,y=0,z=24.22},{x=0,y=0,z=0})
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self.front_suspension = front_suspension
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local lf_wheel=minetest.add_entity(pos,'automobiles_roadster:wheel')
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@ -412,6 +414,8 @@ minetest.register_entity("automobiles_roadster:roadster", {
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self._steering_angle / 30 * turn_rate * automobiles.sign(longit_speed)
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end
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automobiles.ground_get_distances(self, 0.5, 20.52, 24.22)
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--[[if player and is_attached then
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player:set_look_horizontal(newyaw)
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end]]--
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