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structure links and points to arrays

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Ole Morud
2022-06-07 16:47:10 +02:00
parent 7efe33d0d9
commit 07b447a4c6
1 changed files with 28 additions and 9 deletions
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35
physics.c
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@@ -5,8 +5,8 @@
#include <string.h> #include <string.h>
#include <math.h> #include <math.h>
#define GRAVITY 0.01f #define FRAMERATE 60
#define FRAMERATE 10 #define GRAVITY 0.001f
typedef struct Point{ typedef struct Point{
double x, y, double x, y,
@@ -32,8 +32,9 @@ void update_point(Point* p);
*/ */
int main(){ int main(){
char *data = malloc(40*40); char *data = malloc(40*40);
Canvas c = {40, 40, data}; Canvas cnv = {40, 40, data};
// Add 4 points, link them, and add points and links to respective arrays
Point a = { 10.0, 10.0, Point a = { 10.0, 10.0,
10.0, 10.0, 10.0, 10.0,
0.0, GRAVITY/FRAMERATE}; 0.0, GRAVITY/FRAMERATE};
@@ -42,17 +43,35 @@ int main(){
20.0, 10.0, 20.0, 10.0,
0.0, GRAVITY/FRAMERATE}; 0.0, GRAVITY/FRAMERATE};
Point c = { 20.0, 20.0,
20.0, 20.0,
0.0, GRAVITY/FRAMERATE};
Point d = { 10.0, 20.0,
10.0, 20.0,
0.0, GRAVITY/FRAMERATE};
Link *l_ab = link_points(&a, &b); Link *l_ab = link_points(&a, &b);
Link *l_bc = link_points(&b, &c);
Link *l_cd = link_points(&c, &d);
Link *l_ad = link_points(&a, &d);
Point *points[] = {&a, &b, &c, &d};
Link *links[] = {l_ab, l_bc, l_cd, l_ad};
while(1){ while(1){
// clear canvas, calculate next frame and draw // clear canvas, calculate next frame and draw
memset(c.data, '.', c.x * c.y); memset(cnv.data, '.', cnv.x * cnv.y);
draw_link(&c, l_ab);
update_point(&a); for(int i=0; i<4; i++)
update_point(&b); draw_link(&cnv, links[i]);
for(int i=0; i<4; i++)
update_point(points[i]);
// then render and wait // then render and wait
render(&c); render(&cnv);
usleep(1000000/FRAMERATE); usleep(1000000/FRAMERATE);
} }