1 files changed, 79 insertions, 0 deletions
diff --git a/ui/gameMainSelector.cpp b/ui/gameMainSelector.cpp
new file mode 100644
index 0000000..635dce0
--- /dev/null
+++ b/ui/gameMainSelector.cpp
@@ -0,0 +1,79 @@
+#include "gameMainSelector.h"
+#include "collection.hpp"
+#include "text.h"
+#include "ui/uiComponent.h"
+#include <SDL2/SDL.h>
+#include <game/gamestate.h>
+#include <game/geoData.h>
+#include <game/selectable.h>
+#include <game/worldobject.h> // IWYU pragma: keep
+#include <gfx/gl/camera.h>
+#include <optional>
+#include <span>
+#include <stream_support.hpp>
+#include <typeinfo>
+#include <vector>
+
+GameMainSelector::GameMainSelector(const Camera * c, glm::vec2 size) : UIComponent {{{}, size}}, camera {c} { }
+
+void
+GameMainSelector::render(const UIShader & shader, const Position & pos) const
+{
+	if (!clicked.empty()) {
+		Text {clicked, {{50, 10}, {0, 15}}, {1, 1, 0}}.render(shader, pos);
+	}
+}
+
+bool
+GameMainSelector::handleInput(const SDL_Event & e, const Position &)
+{
+	switch (e.type) {
+		case SDL_MOUSEBUTTONDOWN:
+			if (e.button.button == SDL_BUTTON_LEFT) {
+				const auto mouse = glm::vec2 {e.button.x, e.button.y} / position.size;
+				const auto ray = camera->unProject(mouse);
+
+				if (target) {
+					target->click(ray);
+				}
+				else {
+					defaultClick(ray);
+				}
+				return true;
+			}
+			break;
+
+		case SDL_MOUSEMOTION:
+			if (target && target->handleMove()) {
+				const auto mouse = glm::vec2 {e.motion.x, e.motion.y} / position.size;
+				const auto ray = camera->unProject(mouse);
+
+				if (target) {
+					target->move(ray);
+				}
+				return true;
+			}
+			break;
+	}
+	return false;
+}
+
+void
+GameMainSelector::defaultClick(const Ray & ray)
+{
+	glm::vec2 baryPos {};
+	float distance;
+
+	if (const auto selected
+			= gameState->world.applyOne<Selectable>(&Selectable::intersectRay, ray, &baryPos, &distance);
+			selected != gameState->world.end()) {
+		const auto & ref = *selected.base()->get();
+		clicked = typeid(ref).name();
+	}
+	else if (const auto pos = gameState->geoData->intersectRay(ray)) {
+		clicked = streamed_string(*pos);
+	}
+	else {
+		clicked.clear();
+	}
+}