Descr battle map lighting and fog control.txt
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This file effects all the lighting settings for battle maps regardless of climate and season, separate settings are used for day and night battles though. Extract from lighting section of file:
min_light_intensity 1.0 max_light_intensity 1.4 ambient_reduce_proportion 0.75 ambient_red_increase_proportion 0.25 ambient_green_increase_proportion 0.25 ambient_blue_increase_proportion 0.5
the ambient_ _ increase proportion lines affect how much the colour of the sunlight as set in descr_daytypes.txt is altered for shadow areas. The vanilla example shown will increase the amount of blue in the shadows more than the other colours.
A high ambient_ _increase_proportion eg. 0.9 can actually produce more light in the shadow areas than in the lit areas. A low value can make most of map very dark. The equivalent lines in the unit lighting section seem to have negligible effect.
