Basic multi animation support, with walking transition

src/include/Dengine/Entity.h

@@ -31,7 +31,11 @@ typedef struct Entity
 	v2 size;
 	enum Direction direction;
 	Texture *tex;
-	SpriteAnim anim;
+
+	// TODO(doyle): String based access
+	SpriteAnim anim[16];
+	i32 freeAnimIndex;
+	i32 currAnimIndex;
 } Entity;
 
 #endif

src/include/Dengine/Math.h

@@ -5,9 +5,7 @@
 #include <math.h>
 
 #define squared(x) (x * x)
-
-// TODO(doyle): Use this instead of window's math file ...
-//#define abs(x) ((x) > 0 ? (x) : -(x))
+#define absolute(x) ((x) > 0 ? (x) : -(x))
 
 /* VECTORS */
 typedef union v2