mirror of
https://github.com/ZDoom/Raze.git
synced 2024-12-21 09:50:39 +00:00
6458c0ba34
The state quries the user for four values: ref. picnum, target picnum, max. ldist and a lotag. Then, for all sprites i (of ref. picnum), for all sprites j (of target picnum), if ldist(i,j)<=maxldist, sprite j's lotag is changed to the provided one. Also add lunatic/test/maputil.lua, containing a similar function but allowing to customize the selection predicates of the ref. and target sprites, as well as the action to carry out. git-svn-id: https://svn.eduke32.com/eduke32@4414 1a8010ca-5511-0410-912e-c29ae57300e0
63 lines
2 KiB
Lua
63 lines
2 KiB
Lua
|
|
local xmath = require("xmath")
|
|
|
|
local sprite = sprite
|
|
|
|
--
|
|
|
|
local maputil = {}
|
|
|
|
-- csfunc = maputil.CreateCrossSpriteFunc(use_sprite_i_func, use_sprite_j_func)
|
|
--
|
|
-- use_sprite_i_func: function(spri, ud), where
|
|
-- <spri> is a reference to sprite i
|
|
-- use_sprite_j_func: function(sprj, spri, ud), where
|
|
-- <spri> is a reference to sprite i
|
|
-- <sprj> is a reference to sprite j
|
|
--
|
|
-- csfunc: function(userdata, process_sprite_j_func), where
|
|
-- <userdata> is passed as <ud> to the functions described above
|
|
-- <process_sprite_j_func>: function(sprj, spri, ud), the user-provided
|
|
-- function that processes sprite j in some way
|
|
function maputil.CreateCrossSpriteFunc(use_sprite_i_func, use_sprite_j_func)
|
|
return function(userdata, process_sprite_j_func)
|
|
for i in sprite.all() do
|
|
if (use_sprite_i_func(sprite[i], userdata)) then
|
|
for j in sprite.all() do
|
|
if (use_sprite_j_func(sprite[j], sprite[i], userdata)) then
|
|
process_sprite_j_func(sprite[j], sprite[i], userdata)
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
|
|
-- Functions for "for all sprites Y of tile X that are closer than D, ..."
|
|
-- Passed userdefs: { picnumi, picnumj, maxldist }
|
|
local function snearpic_usei(spr, ud)
|
|
return spr.picnum == ud[1]
|
|
end
|
|
|
|
local function snearpic_usej(sprj, spri, ud)
|
|
return sprj.picnum == ud[2] and xmath.ldist(spri, sprj) <= ud[3]
|
|
end
|
|
|
|
local snearpic_func = maputil.CreateCrossSpriteFunc(snearpic_usei, snearpic_usej)
|
|
|
|
-- maputil.for_sprites_near_picnum(picnumi, picnumj, dist, process_sprite_func)
|
|
--
|
|
-- Runs the following loop:
|
|
--
|
|
-- for all sprites i with tile <picnumi>,
|
|
-- for all sprites j of tile <picnumj> that are closer to sprite i than <dist> [*],
|
|
-- call process_sprite_func(sprite[j], sprite[i])
|
|
--
|
|
-- [*] using xmath.ldist()
|
|
function maputil.for_sprites_near_picnum(picnumi, picnumj, dist, process_sprite_func)
|
|
snearpic_func({picnumi, picnumj, dist}, process_sprite_func)
|
|
end
|
|
|
|
|
|
return maputil
|