Scroll Floor

Description

This is a parameterized linedef special.

This is the parameterized scrolling special for the floor.

Usage

Scroll_Floor(tag, flags, type, x, y)

Parameters

• tag: tag of sectors whose floors to scroll;
• flags: zero or a sum of the following values:

• 1: set displacement scrolling
• 2: set accelerative scrolling. This overrides displacement scrolling if both flags are set.
• 4: use linedef vector to direct the scrolling (scrolling will happen wherever the linedef points on the map). Divide the length of the line by 32 to obtain the scrolling velocity. Parameters x and y will be ignored.

• type: type of scroller. Can be:

• 0: scroll only the texture;
• 1: only carry the things, without animating the texture;
• 2: both scroll the texture and carry things.

• x, y: if flags doesn't include 4, then these parameters control the scrolling direction. Please see in Notes about how they're scaled.

Examples

No examples given.

Notes

This special acts static when set on a linedef: it triggers at map startup, not when activated by player or others. But it can also be called from ACS.

The linedef special identification is 223 (UDMF) or 484

Scales of x and y differ between map placement and ACS:

• on the map, due to Hexen format legacy, you need to subtract 128 from the parameter, then divide by 32, to obtain the actual direction.
• in ACS: multiply by 10, then divide by 32. (ExtraData).

See also

• Parameterized linedef specials