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Implement TNT minecart

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This commit is contained in:
Wuzzy 2020-01-30 22:05:18 +01:00
parent 74b79d130b
commit 9dc9c12f29
4 changed files with 150 additions and 19 deletions
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121
mods/ENTITIES/mcl_minecarts/init.lua
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@ -8,10 +8,29 @@ mcl_minecarts.check_float_time = 15
dofile(mcl_minecarts.modpath.."/functions.lua")
dofile(mcl_minecarts.modpath.."/rails.lua")
local function activate_tnt_minecart(self)
if self._boomtimer then
return
end
self.object:set_armor_groups({immortal=1})
self._boomtimer = tnt.BOOMTIMER
self.object:set_properties({textures = {
"mcl_tnt_blink.png",
"mcl_tnt_blink.png",
"mcl_tnt_blink.png",
"mcl_tnt_blink.png",
"mcl_tnt_blink.png",
"mcl_tnt_blink.png",
"mcl_minecarts_minecart.png",
}})
self._blinktimer = tnt.BLINKTIMER
minetest.sound_play("tnt_ignite", {pos = self.object:get_pos(), gain = 1.0, max_hear_distance = 15})
end
-- Table for item-to-entity mapping. Keys: itemstring, Values: Corresponding entity ID
local entity_mapping = {}
local function register_entity(entity_id, mesh, textures, drop, on_rightclick)
local function register_entity(entity_id, mesh, textures, drop, on_rightclick, on_activate_by_rail)
local cart = {
physical = false,
collisionbox = {-10/16., -0.5, -10/16, 10/16, 0.25, 10/16},
@ -28,6 +47,9 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick)
_start_pos = nil, -- Used to calculate distance for “On A Rail” achievement
_last_float_check = nil, -- timestamp of last time the cart was checked to be still on a rail
_fueltime = nil, -- how many seconds worth of fuel is left. Only used by minecart with furnace
_boomtimer = nil, -- how many seconds are left before exploding
_blinktimer = nil, -- how many seconds are left before TNT blinking
_blink = false, -- is TNT blink texture active?
_old_dir = {x=0, y=0, z=0},
_old_pos = nil,
_old_vel = {x=0, y=0, z=0},
@ -36,11 +58,21 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick)
}
function cart:on_activate(staticdata, dtime_s)
-- Initialize
local data = minetest.deserialize(staticdata)
if type(data) == "table" then
self._railtype = data._railtype
end
self.object:set_armor_groups({immortal=1})
-- Activate cart if on activator rail
if self.on_activate_by_rail then
local pos = self.object:get_pos()
local node = minetest.get_node(vector.floor(pos))
if node.name == "mcl_minecarts:activator_rail_on" then
self:on_activate_by_rail()
end
end
end
function cart:on_punch(puncher, time_from_last_punch, tool_capabilities, direction)
@ -61,7 +93,8 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick)
return
end
if puncher:get_player_control().sneak then
-- Punch+sneak: Pick up minecart (unless TNT was ignited)
if puncher:get_player_control().sneak and not self._boomtimer then
if self._driver then
if self._old_pos then
self.object:set_pos(self._old_pos)
@ -123,6 +156,8 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick)
self._punched = true
end
cart.on_activate_by_rail = on_activate_by_rail
function cart:on_step(dtime)
local vel = self.object:get_velocity()
local update = {}
@ -152,8 +187,15 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick)
end
end
-- Explode if already ignited
if self._boomtimer then
self.object:remove()
tnt.boom(pos)
return
end
-- Drop items and remove cart entity
if not minetest.settings:get_bool("creative_mode") then
if not minetest.settings:get_bool("creative_mode") then
for d=1, #drop do
minetest.add_item(self.object:get_pos(), drop[d])
end
@ -165,7 +207,7 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick)
self._last_float_check = 0
end
-- Update furnace texture if out of fuel
-- Update furnace stuff
if self._fueltime and self._fueltime > 0 then
self._fueltime = self._fueltime - dtime
if self._fueltime <= 0 then
@ -184,6 +226,50 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick)
end
local has_fuel = self._fueltime and self._fueltime > 0
-- Update TNT stuff
if self._boomtimer then
-- Explode
self._boomtimer = self._boomtimer - dtime
local pos = self.object:get_pos()
if self._boomtimer <= 0 then
self.object:remove()
tnt.boom(pos)
return
else
tnt.smoke_step(pos)
end
end
if self._blinktimer then
self._blinktimer = self._blinktimer - dtime
if self._blinktimer <= 0 then
self._blink = not self._blink
if self._blink then
self.object:set_properties({textures =
{
"default_tnt_top.png",
"default_tnt_bottom.png",
"default_tnt_side.png",
"default_tnt_side.png",
"default_tnt_side.png",
"default_tnt_side.png",
"mcl_minecarts_minecart.png",
}})
else
self.object:set_properties({textures =
{
"mcl_tnt_blink.png",
"mcl_tnt_blink.png",
"mcl_tnt_blink.png",
"mcl_tnt_blink.png",
"mcl_tnt_blink.png",
"mcl_tnt_blink.png",
"mcl_minecarts_minecart.png",
}})
end
self._blinktimer = tnt.BLINKTIMER
end
end
if self._punched then
vel = vector.add(vel, self._velocity)
self.object:set_velocity(vel)
@ -224,6 +310,10 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick)
minetest.swap_node(rou_old, newnode)
mesecon.receptor_off(rou_old)
end
-- Activate minecart if on activator rail
if node_old.name == "mcl_minecarts:activator_rail_on" and self.on_activate_by_rail then
self:on_activate_by_rail()
end
end
local ctrl, player = nil, nil
@ -483,7 +573,7 @@ Register a minecart
* creative: If false, don't show in Creative Inventory
]]
local function register_minecart(itemstring, entity_id, description, longdesc, usagehelp, mesh, textures, icon, drop, on_rightclick, on_activate_by_rail, creative)
register_entity(entity_id, mesh, textures, drop, on_rightclick)
register_entity(entity_id, mesh, textures, drop, on_rightclick, on_activate_by_rail)
register_craftitem(itemstring, entity_id, description, longdesc, usagehelp, icon, creative)
if minetest.get_modpath("doc_identifier") ~= nil then
doc.sub.identifier.register_object(entity_id, "craftitems", itemstring)
@ -651,8 +741,25 @@ register_minecart(
},
"mcl_minecarts_minecart_tnt.png",
{"mcl_minecarts:minecart", "mcl_tnt:tnt"},
nil, nil, false
)
-- Ingite
function(self, clicker)
if not clicker or not clicker:is_player() then
return
end
if self._boomtimer then
return
end
local held = clicker:get_wielded_item()
if held:get_name() == "mcl_fire:flint_and_steel" then
if not minetest.settings:get_bool("creative_mode") then
held:add_wear(65535/65) -- 65 uses
local index = clicker:get_wielded_index()
local inv = clicker:get_inventory()
inv:set_stack("main", index, held)
end
activate_tnt_minecart(self)
end
end, activate_tnt_minecart, false)
minetest.register_craft({

15
mods/ENTITIES/mcl_minecarts/rails.lua
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@ -129,6 +129,7 @@ register_rail("mcl_minecarts:activator_rail",
offstate = "mcl_minecarts:activator_rail",
onstate = "mcl_minecarts:activator_rail_on",
rules = rail_rules_long,
},
},
},
@ -149,6 +150,20 @@ register_rail("mcl_minecarts:activator_rail_on",
onstate = "mcl_minecarts:activator_rail_on",
rules = rail_rules_long,
},
effector = {
-- Activate minecarts
action_on = function(pos, node)
local pos2 = { x = pos.x, y =pos.y + 1, z = pos.z }
local objs = minetest.get_objects_inside_radius(pos2, 1)
for _, o in pairs(objs) do
local l = o:get_luaentity()
if l and string.sub(l.name, 1, 14) == "mcl_minecarts:" and l.on_activate_by_rail then
l:on_activate_by_rail()
end
end
end,
},
},
drop = "mcl_minecarts:activator_rail",
},

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mods/ENTITIES/mcl_minecarts/textures/mcl_minecarts_minecart_tnt.png
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33
mods/ITEMS/mcl_tnt/init.lua
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@ -48,6 +48,23 @@ tnt.ignite = function(pos)
core.check_for_falling(pos)
end
-- Add smoke particle of entity at pos.
-- Intended to be called every step
tnt.smoke_step = function(pos)
minetest.add_particle({
pos = {x=pos.x,y=pos.y+0.5,z=pos.z},
velocity = vector.new(math.random() * 0.2 - 0.1, 1.0 + math.random(), math.random() * 0.2 - 0.1),
acceleration = vector.new(0, -0.1, 0),
expirationtime = 0.15 + math.random() * 0.25,
size = 1.0 + math.random(),
collisiondetection = false,
texture = "tnt_smoke.png"
})
end
tnt.BOOMTIMER = 4
tnt.BLINKTIMER = 0.25
local TNT_RANGE = 3
local sounds
@ -162,19 +179,11 @@ end
function TNT:on_step(dtime)
local pos = self.object:get_pos()
minetest.add_particle({
pos = {x=pos.x,y=pos.y+0.5,z=pos.z},
velocity = vector.new(math.random() * 0.2 - 0.1, 1.0 + math.random(), math.random() * 0.2 - 0.1),
acceleration = vector.new(0, -0.1, 0),
expirationtime = 0.15 + math.random() * 0.25,
size = 1.0 + math.random(),
collisiondetection = false,
texture = "tnt_smoke.png"
})
tnt.smoke_step(pos)
self.timer = self.timer + dtime
self.blinktimer = self.blinktimer + dtime
if self.blinktimer > 0.25 then
self.blinktimer = self.blinktimer - 0.25
if self.blinktimer > tnt.BLINKTIMER then
self.blinktimer = self.blinktimer - tnt.BLINKTIMER
if self.blinkstatus then
self.object:set_texture_mod("")
else
@ -182,7 +191,7 @@ function TNT:on_step(dtime)
end
self.blinkstatus = not self.blinkstatus
end
if self.timer > 4 then
if self.timer > tnt.BOOMTIMER then
tnt.boom(self.object:get_pos())
self.object:remove()
end