128 lines
4.2 KiB
Lua
128 lines
4.2 KiB
Lua
-- loveutils.graphics : a set of useful functions for love2D. Aim to reduce
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-- boilerplate in love2D by creating usefull function to handle these roles.
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--[[
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Copyright © 2019 Kazhnuz
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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]]
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local Graphics = {}
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-- COLOR FUNCTIONS
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-- Handle colors and scene colors
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function Graphics.resetColor()
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love.graphics.setColor(1,1,1,1)
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end
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-- PRINT TEXT
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-- Functions to draw text on screen
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function Graphics.print(text, x, y, align, r, sx, sy, ox, oy, kx, ky)
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local width
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local font = love.graphics.getFont()
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width = font:getWidth(text)
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if align == "center" then
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width = (width/2)
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elseif align == "right" then
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width = width
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else
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width = 0
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end
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love.graphics.print(text, x - (width), y, r, sx, sy, ox, oy, kx, ky)
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end
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function Graphics.printWithSpacing(text, spacing, align, x, y, r, sx, sy, ox, oy, kx, ky)
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-- DO NOT USE THIS FUNCTION IN A "UPDATE" FUNCTION !
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-- it's pretty heavy to use as it use a loop to get every character in a text
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local font = love.graphics.getFont()
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local xx = 0
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local lenght = string.len(text)
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local basewidth = font:getWidth(text)
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local width = basewidth + (spacing * lenght)
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if align == "center" then
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width = (width/2)
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elseif align == "right" then
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width = width
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else
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width = 0
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end
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for i=1, lenght do
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local char = string.sub(text, i, i)
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pos = math.floor(x + xx - width)
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love.graphics.print(char, pos, y)
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xx = xx + font:getWidth(char) + spacing
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end
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end
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-- FILTER FUNCTIONS
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-- Basic filters to a drawable
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function Graphics.drawShadow(drawable, x, y, r, sx, sy, ox, oy, kx, ky)
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local color = love.graphics.getColor()
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love.graphics.setColor(0, 0, 0, 0)
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love.graphics.draw(drawable, x+1, y+1, r, sx, sy, ox, oy, kx, ky)
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love.graphics.setColor(color)
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love.graphics.draw(drawable, x, y, r, sx, sy, ox, oy, kx, ky)
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end
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function Graphics.drawBorder(drawable, border, x, y, r, sx, sy, ox, oy, kx, ky)
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local color = love.graphics.getColor()
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local b = border or 1
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love.graphics.setColor(0, 0, 0, 0)
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love.graphics.draw(drawable, x-b, y-b, limit, align, r, sx, sy, ox, oy, kx, ky)
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love.graphics.draw(drawable, x , y-b, limit, align, r, sx, sy, ox, oy, kx, ky)
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love.graphics.draw(drawable, x+b, y-b, limit, align, r, sx, sy, ox, oy, kx, ky)
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love.graphics.draw(drawable, x+b, y , limit, align, r, sx, sy, ox, oy, kx, ky)
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love.graphics.draw(drawable, x-b, y , limit, align, r, sx, sy, ox, oy, kx, ky)
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love.graphics.draw(drawable, x-b, y+b, limit, align, r, sx, sy, ox, oy, kx, ky)
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love.graphics.draw(drawable, x , y+b, limit, align, r, sx, sy, ox, oy, kx, ky)
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love.graphics.draw(drawable, x+b, y+b, limit, align, r, sx, sy, ox, oy, kx, ky)
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love.graphics.setColor(color)
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love.graphics.draw(drawable, x, y, r, sx, sy, ox, oy, kx, ky)
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end
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-- PLACEHOLDER GRAPHICS FUNCTIONS
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-- Ready-to-use placeolder and stuff
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function Graphics.box(x, y, w, h)
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local x = math.floor(x)
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local y = math.floor(y)
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local w = math.floor(w)
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local h = math.floor(h)
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local a = a or 1
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local r, g, b, a = love.graphics.getColor( )
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love.graphics.setColor(r, g, b, 0.3 * a)
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love.graphics.rectangle("fill", x, y, w, h)
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love.graphics.setColor(r, g, b, a)
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love.graphics.rectangle("line", x, y, w, h)
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end
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return Graphics
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