paku/data/sprites.lua

require "animations"

sprites = {
    hero = nil,
    list = {},

    init = function()
        sprites.hero = {
            pos = { x=24, y=15 },
            size= { w=16, h=17 },
            bbo = { left=0, top=0, right=0, bottom=0 },
            flipped = false,
            animation = "hero_stand",
            current_frame = 1,
            current_wait = 1
        }
    end,

    set_animation=function(sprite, animation)
        if sprite.animation ~= animation then
            sprite.animation = animation
            sprite.current_frame = 1
            sprite.current_wait = 1
        end
    end,

    update = function()
        sprites.update_sprite(sprites.hero)

        if key.down(key.LEFT) then
            sprites.hero.flipped = true
            sprites.set_animation(sprites.hero, "hero_walk")
            sprites.hero.pos.x = sprites.hero.pos.x - 1
        elseif key.down(key.RIGHT) then
            sprites.hero.flipped = false
            sprites.set_animation(sprites.hero, "hero_walk")
            sprites.hero.pos.x = sprites.hero.pos.x + 1
        else
            sprites.set_animation(sprites.hero, "hero_stand")
        end
    end,

    update_sprite = function(sprite)
        if sys.beat() then
            sprite.current_wait = sprite.current_wait - 1
            if sprite.current_wait == 0 then
                if sprite.current_frame < #animations[sprite.animation].cycle then
                    sprite.current_frame = sprite.current_frame + 1
                else
                    sprite.current_frame = 1
                end
                local cycle = animations[sprite.animation].cycle[sprite.current_frame]
                sprite.current_wait = animations[sprite.animation].frames[cycle].wait
            end
        end
    end,

    draw = function()
        surf.source(surf_sprites)

        sprites.draw_sprite(sprites.hero)
    end,

    draw_sprite = function(sprite)
        local cycle = animations[sprite.animation].cycle[sprite.current_frame]
        local frame = animations[sprite.animation].frames[cycle]
        draw.surf(frame.frame.x, frame.frame.y, frame.frame.w, frame.frame.h, sprite.pos.x, sprite.pos.y, sprite.size.w, sprite.size.h, sprite.flipped)
    end
}