require "menu"
require "msgbox"

editor = {

    layer = LAYER_FOREGROUND,
    brush={w=2,h=1,tiles={16,17}},
    selection=nil,
    ants=0xc936,
    modified = false,

    enable = function()
        app.update = editor.update
        sys.beat(2)
        shader.disable();
    end,

    update = function()
        view.origin(0,0)
        surf.target(0)

        -- Pintar el menú (el marcador serà en el modul game.lua)
        --score.draw()
        menu.draw()

        -- Pintar el mapa i sprites
        rooms.draw()

        --view.origin(0,0)
        local mx, my = mouse.pos()
        local tx, ty = (mx>>3), (my>>3)
        mx, my = tx<<3, ty<<3

        if my>=0 then
            if editor.selection then
                local rx1,ry1,rx2,ry2=editor.selection.x1<<3,editor.selection.y1<<3,editor.selection.x2<<3,editor.selection.y2<<3
                if rx1>rx2 then rx1,rx2=rx2,rx1 end
                if ry1>ry2 then ry1,ry2=ry2,ry1 end
                draw.pattern(editor.ants)
                draw.rect(rx1-1, ry1-1, rx2-rx1+10, ry2-ry1+10, 28)
                draw.pattern(0xffff)
                if sys.beat() then
                    editor.ants = (editor.ants<<12) | (editor.ants>>4)
                end
            else
                draw.rect(mx-1, my-1, editor.brush.w*8+2, editor.brush.h*8+2, 28)
                draw.rect(mx, my, editor.brush.w*8, editor.brush.h*8, 1)
            end
            if mouse.down(mouse.LEFT) then
                editor.stamp(tx,ty)
                editor.modified = true
                --map.tile(tx,ty,editor.brush.tiles[1])
            end
            if mouse.down(mouse.RIGHT) then
                if editor.selection then
                    editor.selection.x2=tx
                    editor.selection.y2=ty
                else
                    editor.selection={}
                    editor.selection.x1=tx
                    editor.selection.y1=ty
                    editor.selection.x2=tx
                    editor.selection.y2=ty
                end
            else
                if editor.selection then
                    editor.create_stamp()
                    editor.selection=nil
                end
            end
        end

        view.origin(0,0)
        draw.text(rooms.pos.x//20,1,96,28)
        draw.text(rooms.pos.y//12,5,96,28)

        if key.press(key.ESCAPE) then
            editor.quit()
        elseif key.press(key.RIGHT) and rooms.pos.x < 20*7 then
            rooms.pos.x = rooms.pos.x + 20
        elseif key.press(key.LEFT) and rooms.pos.x > 0 then
            rooms.pos.x = rooms.pos.x - 20
        elseif key.press(key.DOWN) and rooms.pos.y < 12*7 then
            rooms.pos.y = rooms.pos.y + 12
        elseif key.press(key.UP) and rooms.pos.y > 0 then
            rooms.pos.y = rooms.pos.y - 12
        elseif key.press(key.TAB) or key.press(key.ESCAPE) then
            editor.picker.show()
        elseif key.press(key.P) then
            sprites.hero.pos.x = tx*8-4
            sprites.hero.pos.y = ty*8-9
        elseif key.press(key.F9) then
            editor.play()
        elseif key.press(key.F11) then
            reload_textures()
        end
    end,

    create_stamp=function()
        if editor.layer == LAYER_FOREGROUND then
            map.surf(rooms.surf_foreground)
        elseif editor.layer == LAYER_BACKGROUND then
            map.surf(rooms.surf_background)
        end
        local tx1,ty1,tx2,ty2=editor.selection.x1,editor.selection.y1,editor.selection.x2,editor.selection.y2
        if tx1>tx2 then tx1,tx2=tx2,tx1 end
        if ty1>ty2 then ty1,ty2=ty2,ty1 end
        editor.brush.w=tx2-tx1+1
        editor.brush.h=ty2-ty1+1
        local w,h=editor.brush.w,editor.brush.h
        local p=1
        for y=1,h do
            for x=1,w do
                editor.brush.tiles[p]=map.tile(tx1+x-1,ty1+y-1)
                --map.tile(tx+x-1,ty+y-1,editor.brush.tiles[p])
                p=p+1
            end
        end
    end,

    stamp=function(tx,ty)
        if editor.layer == LAYER_FOREGROUND then
            map.surf(rooms.surf_foreground)
        elseif editor.layer == LAYER_BACKGROUND then
            map.surf(rooms.surf_background)
        end

        local w,h=editor.brush.w,editor.brush.h
        local p=1
        for y=1,h do
            for x=1,w do
                local fx, fy = tx+x-1, ty+y-1
                if fx < rooms.pos.x+20 and fy < rooms.pos.y+12 then
                    map.tile(fx,fy,editor.brush.tiles[p])
                end
                p=p+1
            end
        end
    end,

    quit=function()
        if editor.modified then
            msgbox.show("IE MEN!",
                {"Hi ha canvis sense guardar.", "Vols guardar-los abans d'eixir?"}, 
                {
                    {"Cancel", app.pop},
                    {"No", sys.quit},
                    {"Yes", function() rooms.save() sys.quit() end}
                } )
        else
            sys.quit()
        end
    end,

    play=function()
        if editor.modified then
            msgbox.show("IE MEN!",
                {"Hi ha canvis sense guardar.", "Vols guardar-los abans de jugar?"}, 
                {
                    {"Cancel", app.pop},
                    {"No", function() app.pop() game.enable() end},
                    {"Yes", function() app.pop() rooms.save() game.enable() end}
                } )
        else
            game.enable()
        end
    end,

    picker = {

        show = function()
            app.push(editor.picker.update_tiles)
        end,

        update_tiles = function()
            view.origin(0,0)
            view.clip()
            surf.source(surf_tiles)
            surf.cls(1)
            draw.surf(0,0,128,128,0,0)

            local mx, my = mouse.pos()
            local tx, ty = mx>>3, my>>3
            mx, my = tx<<3, ty<<3

            draw.rect(mx-1, my-1, 10, 10, 28)
            draw.rect(mx, my, 8, 8, 1)

            if mouse.press(mouse.LEFT) then
                if tx<16 and ty<16 then
                    editor.brush.w=1
                    editor.brush.h=1
                    editor.brush.tiles={}
                    editor.brush.tiles[1]=ty*16+tx
                end
                app.pop()
            end

            if key.press(key.TAB) or key.press(key.ESCAPE) then
                app.pop()
            end

        end
    }
}