merge `dev` into `ppu`

1 files changed, 19 insertions, 0 deletions

diff --git a/src/engine/maths.c b/src/engine/maths.c
new file mode 100644
index 0000000..475bba2
--- /dev/null
+++ b/src/engine/maths.c
@@ -0,0 +1,19 @@
+#include "engine/maths.h"
+
+vec2 vec_add(vec2 a, vec2 b){
+	return (vec2){a.x + b.x, a.y + b.y};
+}
+
+vec_cor vec_cen2cor(vec_cen in, vec2 halfDistance){
+	return (vec_cor){
+		.x = in.x - halfDistance.x,
+		.y = in.y - halfDistance.y,
+	};
+}
+
+vec_cen vec_cor2cen(vec_cor in, vec2 halfDistance){
+	return (vec_cen){
+		.x = in.x + halfDistance.x,
+		.y = in.y + halfDistance.y,
+	};
+}