shooter/shooter.lua

362 lines
9.4 KiB
Lua

shooter = {
time = 0,
objects = {},
rounds = {},
shots = {},
}
SHOOTER_ENABLE_PARTICLE_FX = true
SHOOTER_EXPLOSION_TEXTURE = "shooter_hit.png"
SHOOTER_ALLOW_NODES = true
SHOOTER_ALLOW_ENTITIES = false
SHOOTER_ALLOW_PLAYERS = true
SHOOTER_OBJECT_RELOAD_TIME = 1
SHOOTER_OBJECT_UPDATE_TIME = 0.25
SHOOTER_ROUNDS_UPDATE_TIME = 0.4
SHOOTER_PLAYER_OFFSET = {x=0, y=1, z=0}
SHOOTER_ENTITY_OFFSET = {x=0, y=0, z=0}
SHOOTER_ENTITIES = {
"mobs:dirt_monster",
"mobs:stone_monster",
"mobs:sand_monster",
"mobs:tree_monster",
"mobs:sheep",
"mobs:rat",
"mobs:oerkki",
"mobs:dungeon_master",
}
if minetest.is_singleplayer() == true then
SHOOTER_ALLOW_ENTITIES = true
SHOOTER_ALLOW_PLAYERS = false
end
local allowed_entities = {}
for _,v in ipairs(SHOOTER_ENTITIES) do
allowed_entities[v] = 1
end
local modpath = minetest.get_modpath(minetest.get_current_modname())
local input = io.open(modpath.."/shooter.conf", "r")
if input then
dofile(modpath.."/shooter.conf")
input:close()
input = nil
end
local rounds_update_time = 0
local object_update_time = 0
local object_reload_time = 0
local function get_dot_product(v1, v2)
return v1.x * v2.x + v1.y * v2.y + v1.z * v2.z
end
local function get_particle_pos(p, v, d)
return vector.add(p, vector.multiply(v, {x=d, y=d, z=d}))
end
local function spawn_particles(pos, texture)
if SHOOTER_ENABLE_PARTICLE_FX == true then
if type(texture) ~= "string" then
texture = SHOOTER_EXPLOSION_TEXTURE
end
local spread = {x=0.1, y=0.1, z=0.1}
minetest.add_particlespawner(15, 0.3,
vector.subtract(pos, spread), vector.add(pos, spread),
{x=-1, y=1, z=-1}, {x=1, y=2, z=1},
{x=-2, y=-2, z=-2}, {x=2, y=-2, z=2},
0.1, 0.75, 1, 2, false, texture
)
end
end
local function is_valid_object(object)
if object then
if object:is_player() == true then
return true
end
if SHOOTER_ALLOW_ENTITIES == true then
local luaentity = object:get_luaentity()
if luaentity then
if luaentity.name then
if allowed_entities[luaentity.name] then
return true
end
end
end
end
end
return false
end
local function punch_node(pos, def)
local node = minetest.get_node(pos)
if not node then
return
end
local item = minetest.registered_items[node.name]
if not item then
return
end
if item.groups then
for k, v in pairs(def.groups) do
local level = item.groups[k] or 0
if level >= v then
minetest.remove_node(pos)
local sounds = item.sounds
if item.sounds then
local spec = item.sounds.dug
if spec then
spec.pos = pos
minetest.sound_play(spec.name, spec)
end
end
if item.tiles then
return item.tiles[1]
end
break
end
end
end
end
local function process_round(round)
local target = {object=nil, distance=10000}
local p1 = round.pos
local v1 = round.ray
for _,ref in ipairs(shooter.objects) do
local p2 = vector.add(ref.pos, ref.offset)
if p1 and p2 and ref.name ~= round.name then
local d = vector.distance(p1, p2)
if d < round.def.step then
local n = vector.multiply(v1, {x=-1, y=0, z=-1})
local v2 = vector.subtract(p1, p2)
local r1 = get_dot_product(n, v2)
local r2 = get_dot_product(n, v1)
if r2 ~= 0 then
local t = -(r1 / r2)
local td = vector.multiply(v1, {x=t, y=t, z=t})
local pt = vector.add(p1, td)
local pd = vector.subtract(pt, p2)
if math.abs(pd.x) < ref.collisionbox[4] and
math.abs(pd.y) < ref.collisionbox[5] and
math.abs(pd.z) < ref.collisionbox[6] then
target.object = ref.object
target.pos = pt
target.distance = d
end
end
end
end
end
if target.object and target.pos then
local success, pos = minetest.line_of_sight(p1, target.pos, 1)
if success then
local user = minetest.get_player_by_name(round.name)
if user then
target.object:punch(user, nil, round.def.tool_caps, v1)
spawn_particles(target.pos, SHOOTER_EXPLOSION_TEXTURE)
end
return 1
elseif pos and SHOOTER_ALLOW_NODES == true then
local texture = punch_node(pos, round.def)
if texture then
local pp = get_particle_pos(p1, v1, vector.distance(p1, pos))
spawn_particles(pp, texture)
end
return 1
end
elseif SHOOTER_ALLOW_NODES == true then
local d = round.def.step
local p2 = vector.add(p1, vector.multiply(v1, {x=d, y=d, z=d}))
local success, pos = minetest.line_of_sight(p1, p2, 1)
if pos then
local texture = punch_node(pos, round.def)
if texture then
local pp = get_particle_pos(p1, v1, vector.distance(p1, pos))
spawn_particles(pp, texture)
end
return 1
end
end
end
function shooter:register_weapon(name, def)
local shots = def.shots or 1
local wear = math.ceil(65534 / def.rounds)
local max_wear = (def.rounds - 1) * wear
minetest.register_tool(name, {
description = def.description,
inventory_image = def.inventory_image,
on_use = function(itemstack, user, pointed_thing)
if itemstack:get_wear() < max_wear then
def.spec.name = user:get_player_name()
if shots > 1 then
local step = def.spec.tool_caps.full_punch_interval
for i = 0, step * (shots), step do
minetest.after(i, function()
shooter:fire_weapon(user, pointed_thing, def.spec)
end)
end
else
shooter:fire_weapon(user, pointed_thing, def.spec)
end
itemstack:add_wear(wear)
else
local inv = user:get_inventory()
if inv then
local stack = "shooter:ammo 1"
if inv:contains_item("main", stack) then
minetest.sound_play("shooter_reload", {object=user})
inv:remove_item("main", stack)
itemstack:replace(name.." 1 1")
else
minetest.sound_play("shooter_click", {object=user})
end
end
end
return itemstack
end,
})
end
function shooter:fire_weapon(user, pointed_thing, def)
if shooter.shots[def.name] then
if shooter.time < shooter.shots[def.name] then
return
end
end
shooter.shots[def.name] = shooter.time + def.tool_caps.full_punch_interval
minetest.sound_play(def.sound, {object=user})
local v1 = user:get_look_dir()
local p1 = user:getpos()
if not v1 or not p1 then
return
end
minetest.add_particle({x=p1.x, y=p1.y + 1.6, z=p1.z},
vector.multiply(v1, {x=30, y=30, z=30}),
{x=0, y=0, z=0}, 0.5, 0.25,
false, def.particle
)
if pointed_thing.type == "node" and SHOOTER_ALLOW_NODES == true then
local pos = minetest.get_pointed_thing_position(pointed_thing, false)
local texture = punch_node(pos, def)
if texture then
local pp = get_particle_pos(p1, v1, vector.distance(p1, pos))
pp.y = pp.y + 1.75
spawn_particles(pp, texture)
end
elseif pointed_thing.type == "object" then
local object = pointed_thing.ref
if is_valid_object(object) == true then
object:punch(user, nil, def.tool_caps, v1)
local p2 = object:getpos()
local pp = get_particle_pos(p1, v1, vector.distance(p1, p2))
pp.y = pp.y + 1.75
spawn_particles(pp, SHOOTER_EXPLOSION_TEXTURE)
end
else
shooter:update_objects()
table.insert(shooter.rounds, {
name = def.name,
pos = vector.add(p1, {x=0, y=1.75, z=0}),
ray = v1,
dist = 0,
def = def,
})
end
end
function shooter:load_objects()
local objects = {}
if SHOOTER_ALLOW_PLAYERS == true then
local players = minetest.get_connected_players()
for _,player in ipairs(players) do
local pos = player:getpos()
local name = player:get_player_name()
local hp = player:get_hp() or 0
if pos and name and hp > 0 then
table.insert(objects, {
name = name,
object = player,
pos = pos,
collisionbox = {-0.25,-1.0,-0.25, 0.25, 0.8, 0.25},
offset = SHOOTER_PLAYER_OFFSET,
})
end
end
end
if SHOOTER_ALLOW_ENTITIES == true then
for _,ref in pairs(minetest.luaentities) do
if ref.object and ref.name then
if allowed_entities[ref.name] then
local pos = ref.object:getpos()
local hp = ref.object:get_hp() or 0
if pos and hp > 0 then
local def = minetest.registered_entities[ref.name]
table.insert(objects, {
name = ref.name,
object = ref.object,
pos = pos,
collisionbox = def.collisionbox,
offset = SHOOTER_ENTITY_OFFSET,
})
end
end
end
end
end
object_reload_time = shooter.time
object_update_time = shooter.time
shooter.objects = {}
for _,v in ipairs(objects) do
table.insert(shooter.objects, v)
end
end
function shooter:update_objects()
if shooter.time - object_reload_time > SHOOTER_OBJECT_RELOAD_TIME then
shooter:load_objects()
elseif shooter.time - object_update_time > SHOOTER_OBJECT_UPDATE_TIME then
for i, ref in ipairs(shooter.objects) do
if ref.object then
local pos = ref.object:getpos()
if pos then
shooter.objects[i].pos = pos
end
else
table.remove(shooter.objects, i)
end
end
object_update_time = shooter.time
end
end
minetest.register_on_joinplayer(function(player)
player:hud_set_flags({crosshair = true})
end)
minetest.register_globalstep(function(dtime)
shooter.time = shooter.time + dtime
if shooter.time - rounds_update_time > SHOOTER_ROUNDS_UPDATE_TIME then
for i, round in ipairs(shooter.rounds) do
if process_round(round) or round.dist > round.def.range then
table.remove(shooter.rounds, i)
else
local v = vector.multiply(round.ray, round.def.step)
shooter.rounds[i].pos = vector.add(round.pos, v)
shooter.rounds[i].dist = round.dist + round.def.step
end
end
rounds_update_time = shooter.time
end
if shooter.time > 100000 then
shooter.shots = {}
rounds_update_time = 0
object_reload_time = 0
object_update_time = 0
shooter.time = 0
end
end)