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54 lines
1.8 KiB
Lua
54 lines
1.8 KiB
Lua
local Commands = require 'expcore.commands' --- @dep expcore.commands
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local format_chat_colour = ext_require('expcore.common','format_chat_colour') --- @dep expcore.common
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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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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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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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Commands.new_command('rainbow','Sends an rainbow message in the chat')
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:add_param('message',false) -- action that is done by the player, just text its meaningless
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:enable_auto_concat()
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:register(function(player,message,raw)
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local player_name = player and player.name or '<Server>'
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local player_color = player and player.color or nil
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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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local output = format_chat_colour(player_name..': ',player_color)
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output = output..message:gsub('%S',function(letter)
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local rtn = format_chat_colour(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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game.print(output)
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end) |