local shine_step = 1
local shine_wait = 0
local shine_pos  = 0

function collision(a, b)
    return     (a.x+a.bb.x+a.bb.w >= b.x+b.bb.x) 
           and (a.x+a.bb.x <= b.x+b.bb.x+b.bb.w) 
           and (a.y+a.bb.y+a.bb.h >= b.y+b.bb.y) 
           and (a.y+a.bb.y <= b.y+b.bb.y+b.bb.h)
end

function remove_actor(actor)
    for index, value in pairs(actors) do
        if value == actor then
            table.remove(actors,index)
        end
    end
end

function draw_shiny_rect(x, y, w, h, color, shine_color)
    draw.rect(x,y,w,h,color)
    
    local shine_w= 18
    
    -- Convertir el rectangle en una linea en checkpoints
    local p0 = 0
    local p1 = p0+w-1
    local p2 = p1+h
    local p3 = p2+w
    local p4 = p3+h
    
    -- Punt inicial y final de la recta del brillo
    local s0 = shine_step
    local s1 = s0+shine_w
    local y0 = 0

    if s0==p4 then
        shine_step=0
        draw.line(x, y, x+shine_w, y, shine_color)
    elseif s0<p1 then
        if s1<p1 then
            draw.line(x+s0, y, x+s1, y, shine_color)
        elseif s1<p2 then
            segment = s1-p1
            draw.line(x+s0, y, x+w-1, y, shine_color)
            draw.line(x+w-1, y, x+w-1, y+segment, shine_color)
        end
    elseif s0<p2 then
        if s1<p2 then
            segment = shine_w
            x0 = x+w-1
            y0= y+(s0-p1)-1
            draw.line(x0, y0, x0, y0+segment, shine_color)
        elseif s1<p3 then
            segment = s1-p2
            x0= x+w-1-segment
            y0= y+h-1
            draw.line(x0, y0, x0+segment, y0, shine_color)
            segment = p2-s0-1
            x0= x+w-1
            y0= y+(s0-p1)
            draw.line(x0, y0, x0, y0+segment, shine_color)
        end
    elseif s0<p3 then
        if s1<p3 then
            segment=shine_w
            x0 = x+w-1-(s1-p2)
            y0 = y+h-1
            draw.line(x0, y0, x0+shine_w, y0, shine_color)
        elseif s1<p4 then
            segment = s1-p3
            y0 = y+h-1
            draw.line(x,y0,x,y0-segment,shine_color)
            segment = p3-s0
            y0 = y+h-1
            draw.line(x,y0,x+segment,y0,shine_color)
        end
    elseif s0<p4 then
        if s1<p4 then
            segment = shine_w
            y0 = y+p4-s1
            draw.line(x,y0,x,y0+segment,shine_color)
        else
            segment = s1-p4
            draw.line(x,y,x+segment,y,shine_color)
            segment = p4-s0
            draw.line(x,y,x,y+segment,shine_color)
        end
    end
    shine_step = shine_step+1
end

function arc_text(str, x, y, col)
    font.current(font_sf)
    draw.text(str,x,y,col)
end

function arc_textB(str, x, y, col)
    font.current(font_sf)
    -- Crear el borde negre
	draw.text(str, x-1, y-1, 16)
    draw.text(str, x  , y-1, 16)
    draw.text(str, x+1, y-1, 16)
    
    draw.text(str, x-1, y,   16)
    draw.text(str, x+1, y,   16)
    
    draw.text(str, x-1, y+1, 16)
    draw.text(str, x  , y+1, 16)
    draw.text(str, x+1, y+1, 16)
	-- Escriure la cadena
    draw.text(str,x,y,col)
end

function editor_to_map_tile(editor_tile)
    local result = 0
    if editor_tile<256 then result = editor_tile + arcade_config.tiles_offset end
    return result
end

function map_to_editor_tile(map_tile)
    local result = map_tile - arcade_config.tiles_offset
    if map_tile==0 then result = 256  end
    return result
end

function load_tilemap( sf_mapa )
    local mapa_tw, mapa_th = surf.size(sf_mapa)
    local nrooms = mapa_rooms_per_piso*mapa_pisos
    local x = 0
    local y = 0
    local yroom = 0
    local xroom = 0
    
    map.surf(sf_mapa)
    for ty=0,mapa_th-1 do
        if y == mapa_room_rows then
            yroom = yroom + mapa_rooms_per_piso 
            y = 0
        end
        xroom = yroom
        for tx=0,mapa_tw-1 do
            local tile=editor_to_map_tile(mapa[1+xroom][1+x+y*mapa_room_cols])
            map.tile(tx, ty, tile)
            x = x + 1
            if x == mapa_room_cols then 
                x = 0
                xroom = xroom + 1
            end
        end
        y = y +1
    end
end

-- DEBUG

-- Imprime cualquier valor, incluyendo tablas anidadas
function dump(value, indent)
    indent = indent or ""
    if type(value) ~= "table" then
        return tostring(value)
    end

    local parts = {"{"}
    for k, v in pairs(value) do
        local key = (type(k) == "string") and k or "["..tostring(k).."]"
        table.insert(parts,
            string.format("%s  %s = %s,",
                indent, key, dump(v, indent.."  ")))
    end
    table.insert(parts, indent.."}")
    return table.concat(parts, "\n")
end

function msg_print(x, y, msg, direct_print )
    local scr_x, scr_y
    direct_print = direct_print or false
    if direct_print then 
        scr_x = x
        scr_y = y
    else 
        scr_x, scr_y = viewp:screen_coords(x, y)
    end
    draw.rectf(scr_x,scr_y,45,7,16)
    draw.text(msg,scr_x+1,scr_y+1,2)
end

function view_coord(x, y, w, h, color)
    local scr_x, scr_y = viewp:screen_coords(x, y)
    draw.rect(scr_x, scr_y, w, h, color)
end

function debug.write_tile(x, y, yplus, print_type, align )
    local scr_x, scr_y = viewp:screen_coords(x, y)
    local hab, xx, yy = coords.world_to_tile(x, y)
    
    yplus = yplus or 0
    print_type = print_type or false
    align = align or "R"
    
    local txt_offset = -7
    if align=="R" then txt_offset = -14
    elseif align=="L" then txt_offset = 0
    end     
    
    draw.rectf(scr_x+txt_offset,scr_y+yplus,14,7,16)
    -- local msg = mapa_get_tile(hab,xx,yy)
    local msg = arc_get_tile(x,y)
    if print_type then
        msg = msg.." "..arc_check_tile(x, y)
    end
    draw.text(msg,scr_x+txt_offset+1,scr_y+1+yplus,2)
end