Mercurial > molko
view libmlk-core/mlk/core/animation.h @ 646:7e1eb7f6c049 default tip @
misc: remove .clang
author | David Demelier <markand@malikania.fr> |
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date | Sun, 04 Feb 2024 15:24:37 +0100 |
parents | 459ff09c09b3 |
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/* * animation.h -- basic animations * * Copyright (c) 2020-2023 David Demelier <markand@malikania.fr> * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifndef MLK_CORE_ANIMATION_H #define MLK_CORE_ANIMATION_H /** * \file mlk/core/animation.h * \brief Basic animations * * Drawable animations. * * Animations are small objects using a ::mlk_sprite to update themselves and * draw next frames depending on delay set. * * Using the ::MLK_ANIMATION_FLAGS_LOOP, animations can be permanent and they * reset automatically on update. */ struct mlk_sprite; /** * \enum mlk_animation_flags * \brief Animation flags. * * This enumeration is implemented as a bitmask. */ enum mlk_animation_flags { /** * No flags, default. */ MLK_ANIMATION_FLAGS_NONE, /** * Animation never ends. */ MLK_ANIMATION_FLAGS_LOOP = (1 << 0) }; /** * \struct mlk_animation * \brief Animation structure */ struct mlk_animation { /** * (read-write, borrowed) * * The sprite to draw. */ const struct mlk_sprite *sprite; /** * (read-write) * * Delay in milliseconds between each frame. */ unsigned int delay; /** * (read-write) * * Optional animation flags. */ enum mlk_animation_flags flags; /** \cond MLK_PRIVATE_DECLS */ unsigned int elapsed; unsigned int row; unsigned int column; /** \endcond MLK_PRIVATE_DECLS */ }; #if defined(__cplusplus) extern "C" { #endif /** * Start or reset the animation to the beginning. * * \pre animation != NULL * \param animation the animation */ void mlk_animation_start(struct mlk_animation *animation); /** * Tells if the animation is complete. * * \pre animation != NULL * \param animation the animation * \return non-zero if completed */ int mlk_animation_completed(const struct mlk_animation *animation); /** * Update the animation. * * This function MUST not be called if the animation is complete. * * If the animation has ::MLK_ANIMATION_FLAGS_LOOP, this function will always * return 0. * * \pre animation != NULL and animation is not complete * \param animation the animation * \param ticks frame ticks * \return non-zero if completed */ int mlk_animation_update(struct mlk_animation *animation, unsigned int ticks); /** * Draw the animation at the given position * * This function MUST not be called if the animation is complete. * * \pre animation != NULL and animation is not complete * \param animation the animation * \param x the x coordinate * \param y the y coordinate * \return 0 on success or any error propagated from ::mlk_sprite_draw. */ int mlk_animation_draw(const struct mlk_animation *animation, int x, int y); #if defined(__cplusplus) } #endif #endif /* !MLK_CORE_ANIMATION_H */