37 lines
744 B
C
37 lines
744 B
C
#include "particle.h"
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#include "stb_ds.h"
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#include "freelist.h"
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struct emitter make_emitter() {
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struct emitter e = {0};
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arrsetcap(e.particles, 200);
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return e;
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}
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void free_emitter(struct emitter e) {
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arrfree(e.particles);
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}
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void start_emitter(struct emitter e) {
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}
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void pause_emitter(struct emitter e) {
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}
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void stop_emitter(struct emitter e) {
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}
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void emitter_step(struct emitter e, double dt) {
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for (int i = 0; i < arrlen(e.particles); i++) {
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e.particles[i].pos = HMM_AddV3(e.particles[i].pos, HMM_MulV3F(e.particles[i].v, dt));
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e.particles[i].angle = HMM_MulQ(e.particles[i].angle, HMM_MulQF(e.particles[i].angle, dt));
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e.particles[i].life -= dt;
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if (e.particles[i].life <= 0)
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arrdelswap(e.particles, i);
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}
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}
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