split entity from controller

[blank.git] / src / entity.cpp

diff --git a/src/entity.cpp b/src/entity.cpp
new file mode 100644 (file)
index 0000000..ef9275f
--- /dev/null
+++ b/src/entity.cpp
@@ -0,0 +1,57 @@
+#include "entity.hpp"
+
+#include <glm/gtx/transform.hpp>
+
+
+namespace blank {
+
+Entity::Entity()
+: velocity()
+, position()
+, rotation(1.0f)
+, transform(1.0f)
+, dirty(false) {
+
+}
+
+
+void Entity::Velocity(const glm::vec3 &vel) {
+       velocity = vel;
+}
+
+void Entity::Position(const glm::vec3 &pos) {
+       position = pos;
+       dirty = true;
+}
+
+void Entity::Move(const glm::vec3 &delta) {
+       position += delta;
+       dirty = true;
+}
+
+void Entity::Rotation(const glm::mat4 &rot) {
+       rotation = rot;
+}
+
+const glm::mat4 &Entity::Transform() const {
+       if (dirty) {
+               transform = glm::translate(position) * rotation;
+               dirty = false;
+       }
+       return transform;
+}
+
+Ray Entity::Aim() const {
+       Transform();
+       glm::vec4 from = transform * glm::vec4(0.0f, 0.0f, 1.0f, 1.0f);
+       from /= from.w;
+       glm::vec4 to = transform * glm::vec4(0.0f, 0.0f, -1.0f, 1.0f);
+       to /= to.w;
+       return Ray{ glm::vec3(from), glm::normalize(glm::vec3(to - from)) };
+}
+
+void Entity::Update(int dt) {
+       Move(velocity * float(dt));
+}
+
+}