initial commit

1 files changed, 67 insertions, 0 deletions

diff --git a/src/shared/movement.hh b/src/shared/movement.hh
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+++ b/src/shared/movement.hh
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+#ifndef SHARED_MOVEMENT_HH_
+#define SHARED_MOVEMENT_HH_
+
+#include "shared/math.hh"
+#include "shared/player.hh"
+#include "shared/shared.hh"
+#include "shared/world.hh"
+
+#include <algorithm>
+#include <array>
+
+#include <glm/glm.hpp>
+#include <glm/gtx/norm.hpp>
+
+namespace shared {
+namespace movement {
+
+struct aabb {
+    glm::vec3 min;
+    glm::vec3 max;
+};
+bool intersect_aabbs(const aabb& a, const aabb& b) noexcept;
+
+struct line {
+    glm::vec3 origin;
+    glm::vec3 dir;
+};
+struct ray_aabb_ret {
+    glm::vec3 position;
+    float time;
+    glm::vec3 normal;
+};
+std::optional<ray_aabb_ret> intersect_ray_aabb(const line& line,
+                                               const aabb& aabb) noexcept;
+struct moving_aabb {
+    struct aabb aabb;
+    glm::vec3 velocity;
+};
+struct moving_aabb_ret {
+    float time;
+    glm::vec3 normal;
+};
+std::optional<moving_aabb_ret>
+intersect_moving_aabbs(const moving_aabb& a, const moving_aabb& b) noexcept;
+
+// A block with a bit more info.
+struct blockinfo {
+    shared::world::block block;
+    struct aabb aabb;
+    shared::math::coords chunk_pos;
+    glm::ivec3 pos;
+};
+// /WE/ should use this function to generate our blockdatas.
+constexpr int move_width =
+    static_cast<int>(1.0f + 2 * shared::player::HALFWIDTH + 1.0f);
+constexpr int move_height = static_cast<int>(1.0f + shared::player::HEIGHT);
+
+// Walking a player is fairly complicated, and requires a std::vector of
+// blockdata that represents all the blocks near a player.
+// TODO provide an additional deltatime arugment to enable prediction.
+void move(shared::player& player, const std::vector<blockinfo>& blockinfos,
+          const float deltatime) noexcept;
+
+} // namespace movement
+} // namespace shared
+
+#endif