40 lines
918 B
C
40 lines
918 B
C
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//---
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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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uint8_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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/* 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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