physics

physics.c

@@ -0,0 +1,64 @@
+
+
+#include "graphics.h"
+#include <stdlib.h>
+#include <string.h>
+
+typedef struct Point{
+	uint x;
+	uint y;
+	uint px;
+	uint py;
+	uint fx;
+	uint fy;
+} Point;
+
+typedef struct Link {
+	Point* a;
+	Point* b;
+	double length;
+} Link;
+
+
+
+void draw_link(Canvas* c, Link* l){
+	line(&c, l->a->x, l->a->y, l->b->x, l->b->y);
+}
+
+void update_point(Point* p){
+	uint tempx = p->x;
+	uint tempy = p->y;
+	p->x += (p->x - p->px) + fx;
+	p->y += (p->y - p->py) + fy;
+	p->px = tempx;
+	p->py = tempy;
+}
+
+
+int main(){
+	char *data = malloc(40*40);
+	Canvas c = {40, 40, data};
+	memset(c.data, '.', c.x * c.y);
+
+
+	Point a = {10, 10, 10, 10, 0, 5};
+	Point b = {20, 10, 10, 10, 0, 5};
+	Link l_ab = {&a, &b, 10};
+
+	//line(&c, 1, 1, 8, 8);
+	//line(&c, 8, 8, 1, 1);
+	//line(&c, 0, 5, 8, 8);
+	
+	for(int i=0; i<100; i++){
+		draw_link(&c, &l_ab);
+		update_point(&a);
+		update_point(&b);
+	}
+
+
+	render(&c);
+
+	return 0;
+}
+
+