Brandling Safari: LAN safari-zone creature catching on the HD-2D engine

- Authoritative 30 Hz server (ENet, SQLite): accounts, characters, wild AI, tall grass /
  water / wandering spawns, fishing, captures, follower chains, clock + weather, LAN beacon
- Client: title / join / character creator / play screens, prediction + reconciliation,
  interpolated players and parties, HD-2D UI (dialogue with Professor Henry, HUD, collection)
- Shared deterministic zone generator, movement, protocol, roster, appearance
- Paper-doll character art pipeline (PixelLab base walk + per-item animation edits)
- Brandling roster from the company list (logo colors, jev types), Blender safari props
- Headless test bot

shared/Movement.h

@@ -0,0 +1,49 @@
+#pragma once
+// Player movement, run identically by the server (authoritative) and the
+// client (prediction + reconciliation). Pure function of state + input.
+
+#include "Protocol.h"
+#include "Zone.h"
+
+namespace bs {
+
+constexpr float kWalkSpeed = 4.0f;  // world units / second
+constexpr float kRunSpeed = 6.6f;
+
+struct MoveState {
+    glm::vec2 pos{0.0f};
+    float yaw = 0.0f;
+    bool moving = false;
+    bool running = false;
+};
+
+inline void stepMovement(const Zone& zone, MoveState& s, const InputCmd& in, float dt) {
+    glm::vec2 dir = in.move();
+    float amount = std::min(glm::length(dir), 1.0f);
+    s.moving = amount > 0.05f;
+    s.running = s.moving && in.run();
+    if (!s.moving) return;
+    dir = glm::normalize(dir) * amount;
+    s.yaw = yawFromDir(dir);
+    glm::vec2 step = dir * (s.running ? kRunSpeed : kWalkSpeed) * dt;
+    // Axis-separated resolution slides along obstacles.
+    glm::vec2 p = s.pos;
+    if (zone.walkable(p, p + glm::vec2(step.x, 0.0f))) p.x += step.x;
+    if (zone.walkable(p, p + glm::vec2(0.0f, step.y))) p.y += step.y;
+    s.pos = p;
+}
+
+// Quantizes a world direction exactly like the network does, so prediction
+// uses the same input the server will see.
+inline InputCmd makeInput(uint32_t seq, glm::vec2 worldDir, bool run) {
+    InputCmd c;
+    c.seq = seq;
+    float len = glm::length(worldDir);
+    if (len > 1.0f) worldDir /= len;
+    c.moveX = int8_t(std::lround(glm::clamp(worldDir.x, -1.0f, 1.0f) * 127.0f));
+    c.moveZ = int8_t(std::lround(glm::clamp(worldDir.y, -1.0f, 1.0f) * 127.0f));
+    c.flags = run ? 1 : 0;
+    return c;
+}
+
+}  // namespace bs