mirror of
https://git.minetest.land/VoxeLibre/VoxeLibre.git
synced 2024-09-14 01:22:11 +02:00
66 lines
1.4 KiB
Lua
66 lines
1.4 KiB
Lua
local math_pi = math.pi
|
|
local math_sin = math.sin
|
|
local math_cos = math.cos
|
|
|
|
-- localize vector functions
|
|
local vector_new = vector.new
|
|
local vector_length = vector.length
|
|
|
|
-- move mob in facing direction
|
|
--this has been modified to be internal
|
|
--internal = lua (self.yaw)
|
|
--engine = c++ (self.object:get_yaw())
|
|
mobs.set_velocity = function(self, v)
|
|
|
|
local yaw = (self.yaw or 0)
|
|
|
|
local current_velocity = self.object:get_velocity()
|
|
|
|
local goal_velocity = {
|
|
x = (math_sin(yaw) * -v),
|
|
y = 0,
|
|
z = (math_cos(yaw) * v),
|
|
}
|
|
|
|
|
|
local new_velocity_addition = vector.subtract(goal_velocity,current_velocity)
|
|
|
|
if vector_length(new_velocity_addition) > vector_length(goal_velocity) then
|
|
vector.multiply(new_velocity_addition, (vector_length(goal_velocity) / vector_length(new_velocity_addition)))
|
|
end
|
|
|
|
new_velocity_addition.y = 0
|
|
|
|
--smooths out mobs a bit
|
|
if vector_length(new_velocity_addition) >= 0.0001 then
|
|
self.object:add_velocity(new_velocity_addition)
|
|
end
|
|
end
|
|
|
|
|
|
|
|
-- calculate mob velocity
|
|
mobs.get_velocity = function(self)
|
|
|
|
local v = self.object:get_velocity()
|
|
|
|
v.y = 0
|
|
|
|
if v then
|
|
return vector_length(v)
|
|
end
|
|
|
|
return 0
|
|
end
|
|
|
|
--make mobs jump
|
|
mobs.jump = function(self, velocity)
|
|
|
|
if self.object:get_velocity().y ~= 0 or not self.old_velocity or (self.old_velocity and self.old_velocity.y > 0) then
|
|
return
|
|
end
|
|
|
|
velocity = velocity or 5
|
|
|
|
self.object:add_velocity(vector_new(0,velocity,0))
|
|
end |