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https://github.com/DrBeef/Raze.git
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63 lines
1.4 KiB
Lua
63 lines
1.4 KiB
Lua
-- Bound-checking functions for engine and game "things".
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local ffiC = require("ffi").C
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local bcheck = {}
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--== ENGINE ==--
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function bcheck.sector_idx(sectnum)
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if (sectnum >= ffiC.numsectors+0ULL) then
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error("invalid sector number "..sectnum, 3)
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end
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end
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function bcheck.wall_idx(wallnum)
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if (wallnum >= ffiC.numwalls+0ULL) then
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error("invalid wall number "..wallnum, 3)
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end
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end
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-- TODO: Provide another function that also checks whether the sprite exists in
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-- the game world (statnum != MAXSTATUS).
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function bcheck.sprite_idx(spritenum)
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if (spritenum >= ffiC.MAXSPRITES+0ULL) then
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error("invalid sprite number "..spritenum, 3)
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end
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end
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function bcheck.tile_idx(tilenum)
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if (tilenum >= ffiC.MAXTILES+0ULL) then
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error("invalid tile number "..tilenum, 3)
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end
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end
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--== GAME ==--
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function bcheck.player_idx(snum)
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if (snum >= ffiC.playerswhenstarted+0ULL) then
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error("invalid player number "..snum, 3)
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end
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end
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function bcheck.sound_idx(sndidx)
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if (sndidx >= con_lang.MAXSOUNDS+0ULL) then
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error("invalid sound number "..sndidx, 3)
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end
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end
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function bcheck.weapon_idx(weap)
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if (weap >= ffiC.MAX_WEAPONS+0ULL) then
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error("Invalid weapon ID "..weap, 3)
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end
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end
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function bcheck.inventory_idx(inv)
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if (inv >= ffiC.GET_MAX+0ULL) then
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error("Invalid inventory ID "..inv, 3)
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end
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end
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return bcheck
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