add dialogue and cutscene system

src/dialogue/DialogueSystem.h

@@ -0,0 +1,51 @@
+#pragma once
+
+#include "dialogue/DialogueOverlay.h"
+#include "dialogue/DialogueRuntime.h"
+#include <Eigen/Dense>
+#include <SDL.h>
+#include <string>
+#include <vector>
+
+namespace ZL::Dialogue {
+
+struct TriggerZone {
+	std::string id;
+	std::string dialogueId;
+	Eigen::Vector3f center = Eigen::Vector3f::Zero();
+	float radius = 1.5f;
+	bool once = true;
+	bool triggered = false;
+};
+
+class DialogueSystem {
+public:
+	bool init(Renderer& renderer, const std::string& zipFile = "");
+	bool loadDatabase(const std::string& path);
+
+	void update(int deltaMs, const Eigen::Vector3f& playerPosition);
+	void draw(Renderer& renderer);
+
+	bool handleKeyDown(SDL_Keycode key);
+	bool handlePointerReleased(float x, float y);
+
+	bool startDialogue(const std::string& dialogueId);
+	void stopDialogue();
+
+	bool isActive() const { return runtime.isActive(); }
+	bool blocksGameplayInput() const { return runtime.isActive(); }
+
+	void setFlag(const std::string& name, int value) { runtime.setFlag(name, value); }
+	int getFlag(const std::string& name) const { return runtime.getFlag(name); }
+
+	void addTriggerZone(const TriggerZone& zone);
+	void clearTriggerZones();
+
+private:
+	DialogueDatabase database;
+	DialogueRuntime runtime;
+	DialogueOverlay overlay;
+	std::vector<TriggerZone> triggerZones;
+};
+
+} // namespace ZL::Dialogue