Merge branch 'main' of yibble.dev:bulmanator/ld58

code/core/impl/math.c

@@ -1,8 +1,22 @@
+#include <math.h>
 V2f V2F(F32 x, F32 y) {
 	V2f result = { x, y };
 	return result;
 }
 
+function V2f V2f_Scale(V2f x, F32 scale) {
+  return V2F(x.x * scale, x.y * scale);
+}
+
+V2f NormaliseV2F(V2f x) {
+  F32 magnitude = sqrtf((x.x * x.x) + (x.y * x.y));
+  if(magnitude > 0.0){
+    F32 inverse = 1.0f/magnitude;
+    return V2F(x.x*inverse, x.y*inverse);
+  }
+  return x;
+}
+
 V3f V3F(F32 x, F32 y, F32 z) {
 	V3f result = { x, y, z };
 	return result;
@@ -18,11 +32,6 @@ R2f R2F(V2f min, V2f max) {
 	return result;
 }
 
-V2f V2f_Scale(V2f x, F32 s) {
-	V2f result = { x.x * s, x.y * s };
-	return result;
-}
-
 V3f V3f_Neg(V3f x) {
 	V3f result = { -x.x, -x.y, -x.z };
 	return result;

code/core/math.h

@@ -4,6 +4,8 @@
 #define PI_F32  (3.14159265358979323846264338f)
 #define TAU_F32 (2.0f * PI_F32)
 
+#define Abs(x) (((x) < 0 ? -(x) : (x)))
+
 typedef struct Random Random;
 struct Random {
 	U64 state;
@@ -128,6 +130,9 @@ function V3f M4x4F_VMul3(Mat4x4F m, V3f v);
 function Mat4x4FInv M4x4F_Perspective(F32 fov, F32 aspect, F32 nearp, F32 farp);
 function Mat4x4FInv M4x4F_CameraView(V3f x, V3f y, V3f z, V3f p);
 
+function V2f NormaliseV2F(V2f x);
+function V2f V2f_Scale(V2f x, F32 scale);
+
 // Random
 
 function Random Random_Seed(U64 seed);

code/core/types.h

@@ -34,4 +34,7 @@ struct Str8 {
 #define U32_MAX ((U32) -1)
 #define U64_MAX ((U64) -1)
 
+#define F32_MAX ((F32) 3.40282346638528859811704183484516925e+038F)
+#define F64_MAX ((F64) 1.79769313486231570814527423731704357e+308L)
+
 #endif  // LD_CORE_TYPES_H_