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Make boats go super fast on ice and slightly faster on land

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This commit is contained in:
Elias Fleckenstein 2021-02-24 10:38:49 +01:00
parent 0d2950228a
commit 0c3ab5843d
1 changed files with 29 additions and 13 deletions
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42
mods/ENTITIES/mcl_boats/init.lua
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@ -7,9 +7,17 @@ local boat_y_offset_ground = boat_y_offset + 0.6
local boat_side_offset = 1.001
local boat_max_hp = 4
local function is_water(pos)
local function is_group(pos, group)
local nn = minetest.get_node(pos).name
return minetest.get_item_group(nn, "water") ~= 0
return minetest.get_item_group(nn, group) ~= 0
end
local function is_water(pos)
return is_group(pos, "water")
end
local function is_ice(pos)
return is_group(pos, "ice")
end
local function get_sign(i)
@ -181,16 +189,23 @@ end
function boat.on_step(self, dtime, moveresult)
self._v = get_v(self.object:get_velocity()) * get_sign(self._v)
local on_water = true
local in_water = false
local v_factor = 1
local v_slowdown = 0.02
local p = self.object:get_pos()
if (not is_water({x=p.x, y=p.y-boat_y_offset, z=p.z})) then
local on_water = true
local on_ice = false
local in_water = is_water({x=p.x, y=p.y-boat_y_offset+1, z=p.z})
local waterp = {x=p.x, y=p.y-boat_y_offset - 0.1, z=p.z}
if not is_water(waterp) then
on_water = false
if not in_water and is_ice(waterp) then
on_ice = true
else
v_slowdown = 0.04
end
v_factor = 0.5
v_slowdown = 0.04
elseif (is_water({x=p.x, y=p.y-boat_y_offset+1, z=p.z})) then
elseif in_water then
on_water = false
in_water = true
v_factor = 0.75
@ -300,9 +315,9 @@ function boat.on_step(self, dtime, moveresult)
end
end
local s = get_sign(self._v)
if not on_water and not in_water and math.abs(self._v) > 1.0 then
v_slowdown = math.min(math.abs(self._v) - 1.0, v_slowdown * 5)
elseif in_water and math.abs(self._v) > 1.5 then
if not on_ice and not on_water and not in_water and math.abs(self._v) > 2.0 then
v_slowdown = math.min(math.abs(self._v) - 2.0, v_slowdown * 5)
elseif not on_ice and in_water and math.abs(self._v) > 1.5 then
v_slowdown = math.min(math.abs(self._v) - 1.5, v_slowdown * 5)
end
self._v = self._v - v_slowdown * s
@ -313,7 +328,7 @@ function boat.on_step(self, dtime, moveresult)
p.y = p.y - boat_y_offset
local new_velo
local new_acce = {x = 0, y = 0, z = 0}
if not is_water(p) then
if not is_water(p) and not on_ice then
-- Not on water or inside water: Free fall
local nodedef = minetest.registered_nodes[minetest.get_node(p).name]
new_acce = {x = 0, y = -9.8, z = 0}
@ -343,9 +358,10 @@ function boat.on_step(self, dtime, moveresult)
end
-- Terminal velocity: 8 m/s per axis of travel
local terminal_velocity = on_ice and 57.1 or 8.0
for _,axis in pairs({"z","y","x"}) do
if math.abs(new_velo[axis]) > 8 then
new_velo[axis] = 8 * get_sign(new_velo[axis])
if math.abs(new_velo[axis]) > terminal_velocity then
new_velo[axis] = terminal_velocity * get_sign(new_velo[axis])
end
end