70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
#include "anim.h"
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#include <gint/display.h>
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/* List of animations (and directional animations). */
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#define NORMAL_ANIM(name) \
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extern anim_frame_t name[];
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#define DIRECTIONAL_ANIM(name) \
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extern anim_frame_t name ## _up[]; \
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extern anim_frame_t name ## _right[]; \
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extern anim_frame_t name ## _down[]; \
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extern anim_frame_t name ## _left[]; \
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anim_frame_t *name[4] = { \
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name ## _up, name ## _right, name ## _down, name ## _left };
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#define ANIM_4DIRECTIONAL(prefix, suffix) \
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extern anim_frame_t prefix ## _up_ ## suffix[]; \
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extern anim_frame_t prefix ## _right_ ## suffix[]; \
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extern anim_frame_t prefix ## _down_ ## suffix[]; \
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extern anim_frame_t prefix ## _left_ ## suffix[]; \
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anim_frame_t *prefix ## _ ## suffix[4] = { \
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prefix ## _up_ ## suffix, \
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prefix ## _right_ ## suffix, \
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prefix ## _down_ ## suffix, \
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prefix ## _left_ ## suffix, \
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};
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DIRECTIONAL_ANIM(anim_swing);
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DIRECTIONAL_ANIM(anim_impale);
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ANIM_4DIRECTIONAL(anims_player, Idle);
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ANIM_4DIRECTIONAL(anims_player, Walking);
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ANIM_4DIRECTIONAL(anims_player, Attack);
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ANIM_4DIRECTIONAL(anims_player, Hit);
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/* Animation functions. */
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fixed_t (anim_duration)(anim_frame_t const *first_frame)
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{
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anim_frame_t const *frame = first_frame;
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int ms = 0;
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int i = 0;
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while(frame == first_frame + i) {
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ms += frame->duration;
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frame = frame->next;
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i++;
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}
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return fix(ms) / 1000;
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}
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void anim_frame_render(int x, int y, anim_frame_t const *frame)
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{
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if(!frame) return;
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dsubimage(x - frame->cx, y - frame->cy, frame->sheet,
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frame->x, frame->y, frame->w, frame->h, DIMAGE_NONE);
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}
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void anim_state_update(anim_state_t *state, fixed_t dt)
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{
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if(!state->frame) return;
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state->elapsed += fround(dt * 1000);
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if(state->elapsed < state->frame->duration) return;
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/* Switch to next frame */
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state->elapsed -= state->frame->duration;
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state->frame = state->frame->next;
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}
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