Just roughing physics

src/dawn/scene/components/physics/2d/Ray2D.cpp

@@ -0,0 +1,27 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "Ray2D.hpp"
+
+using namespace Dawn;
+
+Ray2D::Ray2D(glm::vec2 pos, glm::vec2 dir) :
+  position(pos),
+  direction(dir)
+{
+}
+
+bool_t Ray2D::intersects(struct Ray2D ray, glm::vec2 *out) {
+  glm::vec2 j = this->position - ray.position;
+  float_t f = -ray.direction.x * direction.y + direction.x * ray.direction.y;
+  float_t s = (-direction.y * j.x + direction.x * j.y) / f;
+  float_t t = (ray.direction.x * j.y - ray.direction.y * j.x) / f;
+  if (s >= 0 && s <= 1 && t >= 0 && t <= 1) {
+    *out = position + (t * direction);
+    return true;
+  }
+
+  return false;
+}