+init

1 files changed, 36 insertions, 0 deletions

diff --git a/src/math/vec2.c b/src/math/vec2.c
new file mode 100644
index 0000000..86192dc
--- /dev/null
+++ b/src/math/vec2.c
@@ -0,0 +1,36 @@
+#include "math.h"
+#include "../util/assert.h"
+#include "../core/mem.h"
+
+void vec2_scale(Vec2* v, float k, Vec2* out) {
+	ssr_assert(v && out);
+	out->x = v->x * k;
+	out->y = v->y * k;
+}
+
+void vec2_plus(Vec2* v1, Vec2* v2, Vec2* out) {
+	ssr_assert(v1 && v2 && out);
+	out->x = v1->x + v2->x;
+	out->y = v1->y + v2->y;
+}
+
+void vec2_offset(Vec2* v, float offset, Vec2* out) {
+	ssr_assert(v && out);
+	out->x = v->x + offset; 
+	out->y = v->y + offset;
+}
+
+float vec2_dot(Vec2* v1, Vec2* v2) {
+	ssr_assert(v1 && v2);
+	float d = v1->x * v2->x + v1->y * v2->y;
+	return d; 
+}
+
+void vec2_tostring(Vec2* v, char buf[]) {
+	sprintf(buf, "%8.3f %8.3f", v->x, v->y);
+}
+
+void vec2_print(Vec2* v) {
+	vec2_tostring(v, printbuffer);
+	printf("%s", printbuffer);
+}
\ No newline at end of file