149 lines
4.2 KiB
Lua
149 lines
4.2 KiB
Lua
pico-8 cartridge // http://www.pico-8.com
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version 41
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__lua__
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-- bitplane-thingie
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-- by kistaro
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-- mastodon: @kistaro@dragon.style
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-- matrix: @kistaro:chromaticdragon.net
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--
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-- dev tool for experimenting
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-- with bitplanes and palettes
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function _init()
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cls()
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-- reset bitplanes
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poke(0x5f5e, 0xff)
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-- enable mouse
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poke(0x5f2d, 0x1)
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-- lock bottom 16 rows to default palette
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pal({[0]=0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}, 2)
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poke(0x5f5f, 0x10)
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poke(0x5f7e, 0xff)
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poke(0x5f7f, 0xff)
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-- reset mouse position
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last_segment = nil
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segment = nil
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was_click = false
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cx, cy = 0, 0
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-- reset color
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plane_mask = 0xff
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-- experimental additive palette 1
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pal({[0]=0,136,3,4,1,141,13,5,6,8,139,10,140,14,12,7}, 1)
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end
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function _update60()
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restore_under_cursor()
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if stat(34) & 0x1 == 0 then
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-- mouse up
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was_click = false
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segment = nil
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return
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end
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-- ignore drag off ui
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if was_click and segment == nil then
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return
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end
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-- mouse down
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local mouse_x = stat(32)
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local mouse_y = stat(33)
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if mouse_y >= 112 then
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if segment then
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mouse_y = 111
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elseif not was_click then
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handle_ui_click(x, y)
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end
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end
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if mouse_y < 112 then
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local r = 1
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if segment then
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local dx = mouse_x - segment[1]
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local dy = mouse_y - segment[2]
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r = sqrt(dx*dx+dy*dy)
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end
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segment = {mouse_x, mouse_y, r}
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end
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was_click = true
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end
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function _draw()
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draw_ui()
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draw_segment()
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draw_cursor()
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end
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-->8
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-- draw_segment
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function draw_segment()
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if (not segment) return
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color(0xff)
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poke(0x5f5e, plane_mask)
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circfill(unpack(segment))
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end
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-->8
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-- ui (and click)
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function draw_ui()
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poke(0x5f5e, 0xff)
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rectfill(1, 113, 126, 126, 6)
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rect(0,112,0,127,7)
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rect(0,112,127,112,7)
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rect(127,112,127,127,5)
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rect(0,127,127,127,5)
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end
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function handle_ui_click(x, y)
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end
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-->8
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-- draw_cursor
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function draw_cursor()
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cx, cy = stat(32), stat(33)
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-- save blob under cursor to
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-- corner of sprite sheet
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-- to restore on next frame
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poke(0x5f54, 0x60)
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poke(0x5f55, 0x00)
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palt(0, false)
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sspr(cx, cy, 8, 8, 120, 24)
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palt(0, true)
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poke(0x5f54, 0x00)
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poke(0x5f55, 0x60)
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spr(stat(34)+1, cx, cy)
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end
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function restore_under_cursor()
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palt(0, false)
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sspr(120, 24, 8, 8, cx, cy)
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palt(0, true)
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end
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__gfx__
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00000000500000005000000050000000500000005000000050000000500000005000000000000000000000000000000000000000000000000000000000000000
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00000000550000005500000055000000550000005500000055000000550000005500000000000000000000000000000000000000000000000000000000000000
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0070070057500000595000005a5000005a5000005b500000595000005a5000005950000000000000000000000000000000000000000000000000000000000000
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0007700057750000599500005aa50000599500005bb5000059b500005bb5000059b5000000000000000000000000000000000000000000000000000000000000
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0007700057775000599950005aaa50005aaa50005bbb500059b950005aaa50005aaa500000000000000000000000000000000000000000000000000000000000
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00700700557550005595500055a550005595500055b5500055b5500055b5500055b5500000000000000000000000000000000000000000000000000000000000
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000000000057500000595000005a5000005a5000005b5000005b5000005a50000059500000000000000000000000000000000000000000000000000000000000
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00000000005500000055000000550000005500000055000000550000005500000055000000000000000000000000000000000000000000000000000000000000
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00000000555555565555555600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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00000000511111165111111600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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00000000511111165117711600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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00000000511111165177771600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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00000000511111165177771600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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00000000511111165117711600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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00000000511111165111111600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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00000000666666666666666600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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