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use SDL's functions version inplace of libc version

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Sylvain
2021-11-21 22:30:48 +01:00
committed by Sam Lantinga
parent 35b7ce1893
commit d31251b014
46 changed files with 114 additions and 124 deletions
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12
Xcode-iOS/Demos/src/fireworks.c
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@@ -109,7 +109,7 @@ stepParticles(double deltaTime)
}
} else {
float speed =
sqrt(curr->xvel * curr->xvel + curr->yvel * curr->yvel);
SDL_sqrt(curr->xvel * curr->xvel + curr->yvel * curr->yvel);
/* if wind resistance is not powerful enough to stop us completely,
then apply winde resistance, otherwise just stop us completely */
if (WIND_RESISTANCE * deltaMilliseconds < speed) {
@@ -194,15 +194,15 @@ explodeEmitter(struct particle *emitter)
/* come up with a random angle and speed for new particle */
float theta = randomFloat(0, 2.0f * 3.141592);
float exponent = 3.0f;
float speed = randomFloat(0.00, powf(0.17, exponent));
speed = powf(speed, 1.0f / exponent);
float speed = randomFloat(0.00, SDL_powf(0.17, exponent));
speed = SDL_powf(speed, 1.0f / exponent);
/* select the particle at the end of our array */
struct particle *p = &particles[num_active_particles];
/* set the particles properties */
p->xvel = speed * cos(theta);
p->yvel = speed * sin(theta);
p->xvel = speed * SDL_cos(theta);
p->yvel = speed * SDL_sin(theta);
p->x = emitter->x + emitter->xvel;
p->y = emitter->y + emitter->yvel;
p->isActive = 1;
@@ -297,7 +297,7 @@ spawnEmitterParticle(GLfloat x, GLfloat y)
p->y = screen_h;
/* set velocity so that terminal point is (x,y) */
p->xvel = 0;
p->yvel = -sqrt(2 * ACCEL * (screen_h - y));
p->yvel = -SDL_sqrt(2 * ACCEL * (screen_h - y));
/* set other attributes */
p->size = 10 * pointSizeScale;
p->type = emitter;