minetest/games/devtest/mods/soundstuff/racecar.lua

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local drive_speed = 20
local drive_distance = 30
minetest.register_entity("soundstuff:racecar", {
initial_properties = {
physical = false,
collisionbox = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
selectionbox = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
visual = "upright_sprite",
visual_size = {x = 1, y = 1, z = 1},
textures = {"soundstuff_racecar.png", "soundstuff_racecar.png^[transformFX"},
static_save = false,
},
on_activate = function(self, _staticdata, _dtime_s)
self.min_x = self.object:get_pos().x - drive_distance * 0.5
self.max_x = self.min_x + drive_distance
self.vel = vector.new(drive_speed, 0, 0)
end,
on_step = function(self, _dtime, _moveresult)
local pos = self.object:get_pos()
if pos.x < self.min_x then
self.vel = vector.new(drive_speed, 0, 0)
elseif pos.x > self.max_x then
self.vel = vector.new(-drive_speed, 0, 0)
end
self.object:set_velocity(self.vel)
end,
})