61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
//---
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// anim: Renderer's animations
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//
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// Animations in this engine are simply linked variants of sprites. Animated
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// images change over time, moving from frame to frame, and that's it.
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//---
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#pragma once
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#include <stdint.h>
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#include "fixed.h"
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#include <gint/display.h>
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typedef struct anim_frame {
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/* Sheet */
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bopti_image_t const *sheet;
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/* Box for the frame within the sheet */
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uint8_t x, y, w, h;
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/* Position of center for this frame */
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int8_t cx, cy;
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/* Duration of the frame (ms) */
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uint16_t duration;
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/* Next frame */
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struct anim_frame *next;
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} anim_frame_t;
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typedef struct {
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/* Current frame */
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anim_frame_t const *frame;
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/* Time elapsed */
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uint16_t elapsed;
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} anim_state_t;
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/* Duration of an animation, in seconds (assuming linear order until end). */
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fixed_t anim_duration(anim_frame_t const *first_frame);
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#define anim_duration(ff) _Generic((ff), \
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anim_frame_t *: anim_duration((void *)ff), \
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anim_frame_t **: anim_duration(*(void **)ff))
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/* Render a frame at the center position (x,y). */
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void anim_frame_render(int x, int y, anim_frame_t const *frame);
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/* Update an animation to next frame. */
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void anim_state_update(anim_state_t *state, fixed_t dt);
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/* List of animations. */
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/* Basic animations. */
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extern anim_frame_t anim_slime_idle_down[];
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extern anim_frame_t anim_slime_death[];
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extern anim_frame_t anim_bat_idle_down[];
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extern anim_frame_t anim_bat_death[];
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extern anim_frame_t anim_hit[];
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/* Directional animations. */
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extern anim_frame_t *anim_player_idle[4];
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extern anim_frame_t *anim_player_attack[4];
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extern anim_frame_t *anim_swing[4];
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