evan
d338dfe3e8
crosspoint-reader calls it init() and requires it; this called it setup() and treated it as optional. Same concept, two spellings, so an app could not move between the two firmwares for no reason worth defending. init() wins because it is also the stricter contract: a misspelled entry point is now an error instead of an app that starts, draws nothing, and explains nothing. Requiring it exposed that error screens were unreadable. fail() painted the message and the host relaunched the launcher over it on the very next frame, so every Lua error was serial-only -- which would have made "Missing init()" useless to anyone holding the device rather than a console.
26 lines
696 B
Lua
26 lines
696 B
Lua
local ui = require("ui")
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TICK_MS = 1000
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local seconds = 0
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-- Draws straight to the panel rather than through components, so it reads the theme.
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local theme = ui.theme
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function init()
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gui.clear(theme.bg)
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gui.drawText("hello from sd card", 10, 10, theme.fg, theme.bg)
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gui.drawText("touch the screen", 10, 30, theme.muted, theme.bg)
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log.info("hello app started, screen " .. gui.width() .. "x" .. gui.height())
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end
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function on_tick()
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seconds = seconds + 1
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gui.fillRect(10, 50, 120, 20, theme.bg)
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gui.drawText("uptime: " .. seconds .. "s", 10, 50, theme.fg, theme.bg)
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end
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function on_touch(x, y)
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log.info("touch at " .. x .. ", " .. y)
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gui.fillCircle(x, y, 6, theme.accent)
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end
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