135 lines
4.8 KiB
Lua
Executable File
135 lines
4.8 KiB
Lua
Executable File
--global constants
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automobiles_lib.vector_up = vector.new(0, 1, 0)
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function automobiles_lib.check_road_is_ok(obj, max_acc_factor)
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local pos_below = obj:get_pos()
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pos_below.y = pos_below.y - 0.1
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local node_below = minetest.get_node(pos_below).name
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--minetest.chat_send_all(node_below)
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local nodedef = minetest.registered_nodes[node_below]
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if nodedef.liquidtype == "none" then
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local slow_nodes = {
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['default:ice '] = 0.01,
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['default:cave_ice'] = 0.01,
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}
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local acc = slow_nodes[node_below]
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if acc == nil then acc = max_acc_factor end
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return acc
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else
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return 0
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end
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end
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function automobiles_lib.control(self, dtime, hull_direction, longit_speed, longit_drag, later_drag, accel, max_acc_factor, max_speed, steering_limit, steering_speed)
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self._last_time_command = self._last_time_command + dtime
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if self._last_time_command > 1 then self._last_time_command = 1 end
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local player = minetest.get_player_by_name(self.driver_name)
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local retval_accel = accel;
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local stop = false
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-- player control
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if player then
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local ctrl = player:get_player_control()
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local acc = 0
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if self._energy > 0 then
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if longit_speed < max_speed and ctrl.up then
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--get acceleration factor
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acc = automobiles_lib.check_road_is_ok(self.object, max_acc_factor)
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--minetest.chat_send_all('engineacc: '.. engineacc)
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if acc > 1 and acc < max_acc_factor and longit_speed > 0 then
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--improper road will reduce speed
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acc = -1
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end
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end
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--reversing
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if ctrl.sneak and longit_speed <= 1.0 and longit_speed > -1.0 then
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acc = -2
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end
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end
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--break
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if ctrl.down then
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--[[if math.abs(longit_speed) > 0 then
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acc = -5 / (longit_speed / 2) -- lets set a brake efficience based on speed
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end]]--
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--total stop
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--wheel break
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if longit_speed > 0 then
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acc = -5
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if (longit_speed + acc) < 0 then
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acc = longit_speed * -1
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end
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end
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if longit_speed < 0 then
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acc = 5
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if (longit_speed + acc) > 0 then
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acc = longit_speed * -1
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end
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end
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if math.abs(longit_speed) < 0.2 then
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stop = true
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end
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end
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if acc then retval_accel=vector.add(accel,vector.multiply(hull_direction,acc)) end
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if ctrl.aux1 then
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--[[
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--sets the engine running - but sets a delay also, cause keypress
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if self._last_time_command > 0.3 then
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self._last_time_command = 0
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if self._engine_running then
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self._engine_running = false
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-- sound and animation
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if self.sound_handle then
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minetest.sound_stop(self.sound_handle)
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self.sound_handle = nil
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end
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--self.engine:set_animation_frame_speed(0)
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elseif self._engine_running == false and self._energy > 0 then
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self._engine_running = true
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-- sound and animation
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self.sound_handle = minetest.sound_play({name = "engine"},
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{object = self.object, gain = 2.0, pitch = 1.0, max_hear_distance = 32, loop = true,})
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--self.engine:set_animation_frame_speed(30)
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end
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end]]--
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end
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-- steering
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if ctrl.right then
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self._steering_angle = math.max(self._steering_angle-steering_speed*dtime,-steering_limit)
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elseif ctrl.left then
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self._steering_angle = math.min(self._steering_angle+steering_speed*dtime,steering_limit)
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else
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--center steering
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if longit_speed > 0 then
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local factor = 1
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if self._steering_angle > 0 then factor = -1 end
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local correction = (steering_limit*(longit_speed/75)) * factor
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local before_correction = self._steering_angle
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self._steering_angle = self._steering_angle + correction
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if math.sign(before_correction) ~= math.sign(self._steering_angle) then self._steering_angle = 0 end
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end
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end
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local angle_factor = self._steering_angle / 60
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if angle_factor < 0 then angle_factor = angle_factor * -1 end
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local deacc_on_curve = longit_speed * angle_factor
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deacc_on_curve = deacc_on_curve * -1
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if deacc_on_curve then retval_accel=vector.add(retval_accel,vector.multiply(hull_direction,deacc_on_curve)) end
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end
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return retval_accel, stop
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end
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