82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
|
#include "v4k.h"
|
||
|
|
|
||
|
|
vec3 campos1;
|
||
|
|
vec3 campos2;
|
||
|
|
tween_t anim;
|
||
|
|
bool cam_tween_reset=1;
|
||
|
|
camera_t cam;
|
||
|
|
#define NUM_SAMPLES 64
|
||
|
|
|
||
|
|
int tick_mode = 0;
|
||
|
|
|
||
|
|
static double smooth_delta() {
|
||
|
|
static double time_samples[NUM_SAMPLES] = {0};
|
||
|
|
static int curr_index = 0;
|
||
|
|
double time = window_delta();
|
||
|
|
|
||
|
|
time_samples[curr_index] = time;
|
||
|
|
if (++curr_index == NUM_SAMPLES)
|
||
|
|
curr_index = 0;
|
||
|
|
|
||
|
|
double average = 0;
|
||
|
|
for (int i = NUM_SAMPLES; i--; )
|
||
|
|
average += time_samples[i];
|
||
|
|
average /= NUM_SAMPLES;
|
||
|
|
|
||
|
|
time = min(time, average);
|
||
|
|
return time;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool intro_camera() {
|
||
|
|
const float START_MOVING_ONTO_PLANET = 1.5f;
|
||
|
|
const float STAY_PUT_AT_PLANET = 4.0f;
|
||
|
|
const float ZOOM_OUT_TO_BOARD = 5.0f;
|
||
|
|
const float STAY_STILL = 6.0f;
|
||
|
|
const float LIFT_OFF = 7.0f;
|
||
|
|
if (cam_tween_reset) {
|
||
|
|
anim = tween();
|
||
|
|
tween_setkey(&anim, 0.0f, campos1, EASE_QUAD);
|
||
|
|
tween_setkey(&anim, START_MOVING_ONTO_PLANET, campos1, EASE_QUAD);
|
||
|
|
tween_setkey(&anim, STAY_PUT_AT_PLANET, campos2, EASE_QUAD);
|
||
|
|
tween_setkey(&anim, ZOOM_OUT_TO_BOARD, campos2, EASE_QUAD);
|
||
|
|
tween_setkey(&anim, LIFT_OFF, campos1, EASE_QUAD);
|
||
|
|
cam_tween_reset=0;
|
||
|
|
}
|
||
|
|
|
||
|
|
float val = !tick_mode ? window_delta() : tick_mode == 1 ? smooth_delta() : 0.016f;
|
||
|
|
printf("dt: %.04f\n", val);
|
||
|
|
bool done = tween_update(&anim, val) == 1.0f;
|
||
|
|
cam.position = anim.result;
|
||
|
|
camera_lookat(&cam, vec3(cam.position.x,0,cam.position.z));
|
||
|
|
return done;
|
||
|
|
}
|
||
|
|
|
||
|
|
void reset_intro() {
|
||
|
|
cam_tween_reset=1;
|
||
|
|
tween_destroy(&anim);
|
||
|
|
|
||
|
|
campos1 = vec3(0.0f, 5.0f, 0.0f);
|
||
|
|
campos2 = vec3(0.0f, 25.0f, 0.0f);
|
||
|
|
}
|
||
|
|
|
||
|
|
int main() {
|
||
|
|
window_create(75.0, WINDOW_FULLSCREEN|WINDOW_SQUARE/*|WINDOW_VSYNC_DISABLED*/);
|
||
|
|
// window_fps_unlock();
|
||
|
|
// window_fps_lock(60.0);
|
||
|
|
|
||
|
|
cam = camera();
|
||
|
|
reset_intro();
|
||
|
|
|
||
|
|
while( window_swap() && !input(KEY_ESC) ) { // game loop
|
||
|
|
if (intro_camera())
|
||
|
|
reset_intro();
|
||
|
|
|
||
|
|
ddraw_circle(vec3(0,0,0), vec3(0,-1,0), 1.5f);
|
||
|
|
|
||
|
|
if (input_down(KEY_SPACE))
|
||
|
|
tick_mode = ++tick_mode % 3;
|
||
|
|
|
||
|
|
ddraw_text2d(vec2(15, 95), va("mode: %s\n", !tick_mode ? "delta time" : tick_mode == 1 ? "avg delta time" : "fixed time increment"));
|
||
|
|
}
|
||
|
|
}
|