Use raymath for vector calc

obj/kinematics.c

@@ -1,5 +1,5 @@
 #include "header.h"
-#include <math.h>
+#include <raymath.h>
 extern struct kinematic_obj_node *kinematic_HEAD;
 
 struct kinematic_obj init_kinematic_obj(int width, int height){
@@ -33,12 +33,11 @@ void move(struct kinematic_obj *obj, Vector2 acceleration){
     // TODO: extend to multiple object collision, Might need to check distance
 
     // Move the object and apply hitbox reduction
-    obj->velocity.x += acceleration.x * delta;
-    obj->pos.x += obj->velocity.x * delta;
+    obj->velocity = Vector2Add(obj->velocity, Vector2Scale(acceleration, delta));
+    obj->pos = Vector2Add(obj->pos, Vector2Scale(obj->velocity, delta));
+
     obj->rect.x = obj->pos.x + obj->dim_reduction[0];
     obj->rect.width = obj->ori_width - obj->dim_reduction[0]  - obj->dim_reduction[2];
-    obj->velocity.y += acceleration.y * delta;
-    obj->pos.y += obj->velocity.y * delta;
     obj->rect.y = obj->pos.y + obj->dim_reduction[1];
     obj->rect.height = obj->ori_height - obj->dim_reduction[1]  - obj->dim_reduction[3];
     

obj/player.c

@@ -1,5 +1,5 @@
 #include "header.h"
-
+#include <raymath.h>
 
 #define PLAYER_ACCEL 1600
 #define AIR_ACCEL 800
@@ -272,9 +272,7 @@ void player_input_check(struct player_obj *player){
         }
         
         // Apply the scalar value, normalised to the unit direction
-        double m = mag(dash_vec);
-        dash_vec.x = dash_vec.x * DASH_SPD/m;
-        dash_vec.y =  dash_vec.y * DASH_SPD/m;
+        dash_vec = Vector2Scale(Vector2Normalize(dash_vec), DASH_SPD);
         --dash_count;
         frame_counter=0;
         afterimage_fcounter=0;

utilities/math.c

@@ -1,15 +1,6 @@
 #include "header.h"
 #include <math.h>
 
-double mag(Vector2 vec){
-    return sqrt(vec.x*vec.x + vec.y*vec.y);
-}
-
-Vector2 dir(Vector2 vec){
-    long vec_mag = mag(vec);
-    return (Vector2){.x = vec.x/vec_mag,.y = vec.y/vec_mag};
-}
-
 int sign(double val){
     return (val > 0)?1:-1;
 }