From 2eeaeafb40a6b04b811714c793fb97ce4de41254 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sat, 30 Jan 2021 14:14:01 +0000
Subject: Split into main app and library the rest for testing

---
 gfx/inputHandler.h             | 18 ++++++++++++
 gfx/manualCameraController.cpp | 65 ++++++++++++++++++++++++++++++++++++++++++
 gfx/manualCameraController.h   | 25 ++++++++++++++++
 3 files changed, 108 insertions(+)
 create mode 100644 gfx/inputHandler.h
 create mode 100644 gfx/manualCameraController.cpp
 create mode 100644 gfx/manualCameraController.h

(limited to 'gfx')

diff --git a/gfx/inputHandler.h b/gfx/inputHandler.h
new file mode 100644
index 0000000..5b426c7
--- /dev/null
+++ b/gfx/inputHandler.h
@@ -0,0 +1,18 @@
+#ifndef INPUT_HANDLER_H
+#define INPUT_HANDLER_H
+
+#include <special_members.hpp>
+
+union SDL_Event;
+
+class InputHandler {
+public:
+	InputHandler() = default;
+	virtual ~InputHandler() = default;
+
+	DEFAULT_MOVE_COPY(InputHandler);
+
+	virtual bool handleInput(SDL_Event &) = 0;
+};
+
+#endif
diff --git a/gfx/manualCameraController.cpp b/gfx/manualCameraController.cpp
new file mode 100644
index 0000000..36f3312
--- /dev/null
+++ b/gfx/manualCameraController.cpp
@@ -0,0 +1,65 @@
+#include "manualCameraController.h"
+#include <gfx/gl/camera.h>
+#include <gfx/gl/shader.h>
+
+bool
+ManualCameraController::handleInput(SDL_Event & e)
+{
+	switch (e.type) {
+		case SDL_KEYDOWN:
+			switch (e.key.keysym.sym) {
+				case SDLK_LCTRL:
+				case SDLK_RCTRL:
+					ctrl = true;
+					return true;
+			}
+			break;
+		case SDL_KEYUP:
+			switch (e.key.keysym.sym) {
+				case SDLK_LCTRL:
+				case SDLK_RCTRL:
+					ctrl = false;
+					return true;
+			}
+			break;
+		case SDL_MOUSEBUTTONDOWN:
+			switch (e.button.button) {
+				case SDL_BUTTON_RIGHT:
+					SDL_SetRelativeMouseMode(SDL_TRUE);
+					mrb = true;
+					return true;
+			}
+			break;
+		case SDL_MOUSEBUTTONUP:
+			switch (e.button.button) {
+				case SDL_BUTTON_RIGHT:
+					SDL_SetRelativeMouseMode(SDL_FALSE);
+					mrb = false;
+					return true;
+			}
+			break;
+		case SDL_MOUSEMOTION:
+			if (mrb) {
+				motion = e.motion;
+			}
+			return true;
+	}
+	return false;
+}
+
+void
+ManualCameraController::updateCamera(Camera * camera, Shader * shader) const
+{
+	if (motion) {
+		if (ctrl) {
+			camera->RotateY(-0.01F * motion->xrel);
+			camera->Pitch(-0.01F * motion->yrel);
+		}
+		else {
+			camera->MoveRight(motion->xrel);
+			camera->SlideForward(motion->yrel);
+		}
+		shader->setView(camera->GetViewProjection());
+		motion.reset();
+	}
+}
diff --git a/gfx/manualCameraController.h b/gfx/manualCameraController.h
new file mode 100644
index 0000000..112ec5c
--- /dev/null
+++ b/gfx/manualCameraController.h
@@ -0,0 +1,25 @@
+#ifndef MANUAL_CAMERA_CONTROLLER_H
+#define MANUAL_CAMERA_CONTROLLER_H
+
+#include "game/worldobject.h"
+#include "inputHandler.h"
+#include <SDL2/SDL.h>
+#include <gfx/camera_controller.h>
+#include <optional>
+
+class Camera;
+class Shader;
+
+class ManualCameraController : public CameraController, public InputHandler {
+public:
+	bool handleInput(SDL_Event & e) override;
+
+	void tick(TickDuration) override { }
+
+	void updateCamera(Camera * camera, Shader * shader) const override;
+
+private:
+	bool ctrl {false}, mrb {false};
+	mutable std::optional<SDL_MouseMotionEvent> motion;
+};
+#endif
-- 
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