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render differently at different zoom levels

This commit is contained in:
Kartik K. Agaram 2021-05-16 13:24:58 -07:00
parent 9a531aef5f
commit c3eddb9154
1 changed files with 12 additions and 1 deletions
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13
hest-life.mu
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@ -20,12 +20,23 @@ fn main screen: (addr screen), keyboard: (addr keyboard), data-disk: (addr disk)
}
type environment {
zoom: int
zoom: int # 0 = 1024 px per cell; 5 = 4px per cell; each step adjusts by a factor of 4
tick: int
}
fn render screen: (addr screen), _self: (addr environment) {
clear-screen screen
var self/esi: (addr environment) <- copy _self
var zoom/eax: (addr int) <- get self, zoom
compare *zoom, 0
{
break-if-!=
render0 screen, self
return
}
}
fn render0 screen: (addr screen), _self: (addr environment) {
var self/esi: (addr environment) <- copy _self
# cell border
draw-vertical-line screen, 0xc0/x, 0/ymin, 0x300/ymax, 0x16/color=dark-grey