Button API

--Button API with pixels instead of squares
--because my version of computercraft doesn't have them

--table with all the buttons
buttons={}

--makes a table with all the button information
--and insert it into main buttons table
function makeNewButton(name,text,IX,IY,FX,FY)
 --(Initial x,y and final x,y as button coordinates)
 local z={IX=IX,IY=IY,FX=FX,FY=FY,text=text,state=false}
 buttons[name]=z
end

--actually draws the button
function renderButton(button,color,monitor_name)

 --sets color (i'm going to add the other colors lateer)

 if color=="white" then
  color=1
 elseif color=="green" then
  color=32
 elseif color=="gray" then
  color=128
 elseif color=="blue" then
  color=2048
 elseif color=="red" then
  color=16384
 end

 --checks if there any monitors are called
 if monitor_name~=nil then
  term.redirect(monitor_name)
 end

 --draws button based on its coordinates
 local b = buttons[button]
 for x=b["IX"],b["FX"] do
  for y=b["IY"],b["FY"] do
   paintutils.drawPixel(x,y,color)
  end
 end

 --draws the text in the middle of the button with black to add contrast
 term.setCursorPos(((b["FX"]+b["IX"])/2)-(#b["text"]/2),(b["FY"]+b["IY"])/2)
 term.setTextColor(colors.black)
 term.write(b["text"])

 --restore the cursor position and set cursor in the computer again
 term.setCursorPos(1,1)
 term.restore()

end

--checks if the button is colliding with set coordinates
function isButtonColliding(button,target_x,target_y)

 local b = buttons[button]

 --collision states x and y
 colx = (target_x>=b["IX"] and target_x<=b["FX"])
 coly = (target_y>=b["IY"] and target_y<=b["FY"])

 return (colx and coly)

end