Factorio Forums

Currently I can set the value game.player.zoom that will change the zoom level. This however works only if player.render_mode is render_mode.game (i.e. map is closed) or render_mode.chart_zoomed_in (i.e. map is open and zoomed in so that the world can be seen).

It is currently not possible to change the zoom level if the render_mode == render_mode.chart.

Motivation explained in another thread.

PS In Vanilla map, zooming in and out is relative to the mouse cursor. It would be nice if changing zoom level via script could respect that.

I would like to second this request (or at least parts of it) for two reasons:

1. Completeness: this parameter can be used to control the two other rendering modes, I don't really see any good reason for why it shouldn't work for the regular map if it works for the zoom-to-world-map.
2. Hijacking the zoom system through mods: I have a long running mod (Infinizoom) that tries to "remove" the zoom limits from the game. At the release of Factorio 1.0 I did some experiments with, basically, replacing the zoom system with custom scripts. By consuming the (alt-)zoom-in/-out hotkeys it is possible to get it working with reasonable side-effects, except that it is no longer possible to zoom in the map. (player.open_map() is, unfortunately, not an option as it would require the current map position, something a mod simply cannot know)

My hope is that adding this would not be a huge change, and that the additional flexibility it would allow mods to create is worth the hassle.