62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
// A bunch of component definitions that might not
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// be useful in general, but who knows?
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#ifndef __HALOO3D_ECSCOMP_H
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#define __HALOO3D_ECSCOMP_H
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#include "ecs.h"
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#include "haloo3d/haloo3d.h"
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// A component that simply points back to an object instance. If combined
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// with movement, will pull pos from objin at start of frame, then write
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// pos back to obj at end of frame.
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typedef haloo3d_obj_instance *ecs_objin;
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// Like objin, this component simply points to a camera. It will set the
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// position AND rotation at the start of the frame, and pull the pos/
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// rotation back into the camera at the end.
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typedef haloo3d_camera *ecs_camera;
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typedef struct {
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struct vec3 pos;
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struct vec3 dst;
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int timer;
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} ecs_moveto;
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typedef struct {
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struct vec2 rot;
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struct vec2 dstrot;
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int timer;
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} ecs_rotateto;
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// Move object position into moveto
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static void sys_ecs_objin_moveto(haloo_ecs *ecs, hecs_eidt id, hecs_cidt oiid,
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hecs_cidt mtid) {
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ecs_moveto *mt = HECS_ENTITYCOMPONENT(ecs_moveto *, id, mtid, ecs);
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ecs_objin *oi = HECS_ENTITYCOMPONENT(ecs_objin *, id, oiid, ecs);
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mt->pos = (*oi)->pos;
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}
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static void sys_ecs_moveto(haloo_ecs *ecs, hecs_eidt id, hecs_cidt mtid) {
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ecs_moveto *mt = HECS_ENTITYCOMPONENT(ecs_moveto *, id, mtid, ecs);
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if (mt->timer <= 0) {
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mt->pos = mt->dst;
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return;
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}
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mfloat_t xdiff = mt->dst.x - mt->pos.x;
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mfloat_t ydiff = mt->dst.y - mt->pos.y;
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mt->pos.x = xdiff / mt->timer;
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mt->pos.y = ydiff / mt->timer;
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mt->timer--;
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}
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// Move movement pos back into object
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static void sys_ecs_moveto_objin(haloo_ecs *ecs, hecs_eidt id, hecs_cidt mtid,
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hecs_cidt oiid) {
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ecs_moveto *mt = HECS_ENTITYCOMPONENT(ecs_moveto *, id, mtid, ecs);
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ecs_objin *oi = HECS_ENTITYCOMPONENT(ecs_objin *, id, oiid, ecs);
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(*oi)->pos = mt->pos;
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}
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#endif
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