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73 lines
2.2 KiB
Lua
73 lines
2.2 KiB
Lua
--[[-- Commands - Rainbow
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Adds a command that prints your message in rainbow font
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]]
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local Commands = require("modules/exp_commands")
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local format_player_name = Commands.format_player_name_locale
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local format_text = Commands.format_rich_text_color
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--- Wraps one component into the next
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--- @param c1 number
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--- @param c2 number
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--- @return number, number
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local function step_component(c1, c2)
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if c1 < 0 then
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return 0, c2 + c1
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elseif c1 > 1 then
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return 1, c2 - c1 + 1
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else
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return c1, c2
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end
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end
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--- Wraps all components of a colour ensuring it remains valid
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--- @param color Color
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--- @return Color
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local function step_color(color)
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color.r, color.g = step_component(color.r, color.g)
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color.g, color.b = step_component(color.g, color.b)
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color.b, color.r = step_component(color.b, color.r)
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color.r = step_component(color.r, 0)
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return color
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end
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--- Get the next colour in the rainbow by the given step
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--- @param color Color
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--- @param step number
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--- @return Color
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local function next_color(color, step)
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step = step or 0.1
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local new_color = { r = 0, g = 0, b = 0 }
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if color.b == 0 and color.r ~= 0 then
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new_color.r = color.r - step
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new_color.g = color.g + step
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elseif color.r == 0 and color.g ~= 0 then
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new_color.g = color.g - step
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new_color.b = color.b + step
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elseif color.g == 0 and color.b ~= 0 then
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new_color.b = color.b - step
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new_color.r = color.r + step
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end
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return step_color(new_color)
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end
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--- Sends an rainbow message in the chat
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Commands.new("rainbow", { "exp-commands_rainbow" })
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:argument("message", { "exp-commands_rainbow.arg-message" }, Commands.types.string)
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:enable_auto_concatenation()
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:register(function(player, message)
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local color_step = 3 / message:len()
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if color_step > 1 then color_step = 1 end
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local current_color = { r = 1, g = 0, b = 0 }
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game.print{
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"exp-commands_rainbow.response",
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format_player_name(player),
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message:gsub("%S", function(letter)
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local rtn = format_text(letter, current_color)
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current_color = next_color(current_color, color_step)
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return rtn
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end)
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}
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end)
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