Rewrite native code in Odin and use ECSodin

1 files changed, 24 insertions, 0 deletions

diff --git a/lib/common.odin b/lib/common.odin
new file mode 100644
index 0000000..3c6679f
--- /dev/null
+++ b/lib/common.odin
@@ -0,0 +1,24 @@
+package djup
+
+import "core:math"
+
+vec2 :: [2]f32
+
+vec2_dot :: proc(a, b: vec2) -> vec2 {
+	return vec2{a.x * b.x, a.y * b.y}
+}
+
+vec2_length :: proc(v: vec2) -> f32 {
+	if v == (vec2{0, 0}) {
+		return 0
+	}
+	return math.sqrt(math.pow(v.x, 2) + math.pow(v.y, 2))
+}
+
+vec2_normal :: proc(v: vec2) -> vec2 {
+	len := vec2_length(v)
+	if len == 0 {
+		return vec2{0, 0}
+	}
+	return v * (1 / len)
+}