Prevent overflow when attempting to calculate the space between floor and ceiling. (I didn't notice any bugs as a result of the previous behvaiour, but you never know.)
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@ -994,7 +994,7 @@ static boolean PIT_CheckThing(mobj_t *thing)
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if (tmthing->player && tmthing->z + tmthing->height > topz
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if (tmthing->player && tmthing->z + tmthing->height > topz
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&& tmthing->z + tmthing->height < tmthing->ceilingz)
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&& tmthing->z + tmthing->height < tmthing->ceilingz)
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{
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{
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tmceilingz = INT32_MIN; // block while in air
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tmfloorz = tmceilingz = INT32_MIN; // block while in air
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#ifdef ESLOPE
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#ifdef ESLOPE
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tmceilingslope = NULL;
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tmceilingslope = NULL;
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#endif
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#endif
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@ -1037,7 +1037,7 @@ static boolean PIT_CheckThing(mobj_t *thing)
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if (tmthing->player && tmthing->z < topz
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if (tmthing->player && tmthing->z < topz
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&& tmthing->z > tmthing->floorz)
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&& tmthing->z > tmthing->floorz)
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{
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{
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tmfloorz = INT32_MAX; // block while in air
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tmfloorz = tmceilingz = INT32_MAX; // block while in air
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#ifdef ESLOPE
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#ifdef ESLOPE
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tmfloorslope = NULL;
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tmfloorslope = NULL;
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#endif
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#endif
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