init

1 files changed, 72 insertions, 0 deletions

diff --git a/lib/vectorlib.c b/lib/vectorlib.c
new file mode 100644
index 0000000..c059742
--- /dev/null
+++ b/lib/vectorlib.c
@@ -0,0 +1,72 @@
+#ifndef vector_lib
+#define vector_lib
+
+#include <math.h>
+#include <stdlib.h>
+
+#define flaot float
+
+typedef struct {
+    float x;
+    float y;
+} Point;
+
+void point_add(Point *A, Point *B){
+    A->x = A->x + B->x;
+    A->y = A->y + B->y;
+}
+
+void point_sub(Point *A, Point *B){
+    A->x = A->x - B->x;
+    A->y = A->y - B->y;
+}
+
+void point_mul(Point *A, Point *B){
+    A->x = A->x * B->x;
+    A->y = A->y * B->y;
+}
+
+void point_div(Point *A, Point *B){
+    A->x = A->x / B->x;
+    A->y = A->y / B->y;
+}
+
+float magnitude(flaot x, flaot y) {
+    return sqrt((pow(x,2) + pow(y,2)));
+}
+
+void point_set_mag(Point *point, float mag){
+        flaot getmag = magnitude(point->x, point->y);
+        flaot rx = (point->x / getmag) * mag;
+        flaot ry = (point->y / getmag) * mag;
+
+        point->x = rx;
+        point->y = ry;
+}
+
+void point_limit(Point *point, float mag){
+        flaot getmag = magnitude(point->x, point->y);
+        flaot rx, ry;
+        if (getmag > mag){
+            rx = (point->x / getmag) * mag;
+            ry = (point->y / getmag) * mag;
+        } else {
+            rx = point->x;
+            ry = point->y;
+        }
+
+        point->x = rx;
+        point->y = ry;
+}
+
+float RandomFloat(float min, float max){
+   return ((max - min) * ((float)rand() / (double)RAND_MAX)) + min;
+}
+
+float constrain(float val, float min, float max){
+    if(val > max) val=max;
+    else if(val < min) val=min;
+    return val;
+}
+
+#endif
\ No newline at end of file