//      zoom.rc
//
//      zoom script for GIB in QuakeForge 0.5
//
//      Copyright (C) 2002  Brian Koropoff
//
//      This program is free software; you can redistribute it and/or
//      modify it under the terms of the GNU General Public License
//      as published by the Free Software Foundation; either version 2
//      of the License, or (at your option) any later version.
//
//      This program is distributed in the hope that it will be useful,
//      but WITHOUT ANY WARRANTY; without even the implied warranty of
//      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
//
//      See the GNU General Public License for more details.
//
//      You should have received a copy of the GNU General Public License
//      along with this program; if not, write to:
//
//              Free Software Foundation, Inc.
//              59 Temple Place - Suite 330
//              Boston, MA  02111-1307, USA

set zoom_version {$Id$}
set zoom_base_amp 1
set zoom_base_fov 90
set zoom_mult 1.25
set zoom_zoomed 0

set zoom_mult_lower 1.25
set zoom_mult_upper 90 // This is more or less the hard limit
set zoom_mult_step .25

alias zoom_init { // Initialize basic options
	if #{$argn != 6} {
		echo "Usage: $0 base_sensitivity base_fov min_zoom max_zoom zoom_step"
		return
	}
	set zoom_base_amp $1
	set zoom_base_fov $2
	set zoom_mult_lower $3
	set zoom_mult $3
	set zoom_mult_upper $4
	set zoom_mult_step $5
}

alias zoom_mult { // "Accessor" for zoom_mult
	if #{!$1} return // Prevent division by zero
	set zoom_mult $1
}

alias zoom_adjust { // Adjust fov and sensitivity to match zoom factor
	if $zoom_zoomed {
		set fov #{$zoom_base_fov/$zoom_mult}
		set in_amp #{$zoom_base_amp/$zoom_mult}
		return
	} else {
		set fov $zoom_base_fov
		set in_amp $zoom_base_amp
	}
}

alias zoom_in { // Replaced ID zoom function
	set zoom_zoomed 1
	zoom_adjust
}

alias zoom_out { // Replaced ID zoom function
	set zoom_zoomed 0
	zoom_adjust
}

alias zoom_toggle {
	toggle zoom_zoomed
	zoom_adjust
}

alias zoom_increase {
	if #{!$zoom_zoomed} return
	zoom_mult #{$zoom_mult + $zoom_mult_step*$zoom_mult} // Grow zoom exponentially
	if #{$zoom_mult>$zoom_mult_upper} {
		zoom_mult $zoom_mult_upper
	}
	zoom_adjust
}

alias zoom_decrease {
	if #{!$zoom_zoomed} return
	zoom_mult #{$zoom_mult/(1 + $zoom_mult_step)}
	if #{$zoom_mult < $zoom_mult_lower} {
		zoom_mult $zoom_mult_lower
	}
	zoom_adjust
}