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/*
Minetest
Copyright (C) 2020 Jean-Patrick Guerrero <jeanpatrick.guerrero@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#pragma once
#include "irrlichttypes_extrabloated.h"
#include "ICameraSceneNode.h"
#include "StyleSpec.h"
using namespace irr;
class GUIScene : public gui::IGUIElement
{
public:
GUIScene(gui::IGUIEnvironment *env, scene::ISceneManager *smgr,
gui::IGUIElement *parent, core::recti rect, s32 id = -1);
~GUIScene();
scene::IAnimatedMeshSceneNode *setMesh(scene::IAnimatedMesh *mesh = nullptr);
void setTexture(u32 idx, video::ITexture *texture);
void setBackgroundColor(const video::SColor &color) noexcept { m_bgcolor = color; };
void enableMouseControl(bool enable) noexcept { m_mouse_ctrl = enable; };
void setRotation(v2f rot) noexcept { m_custom_rot = rot; };
void enableContinuousRotation(bool enable) noexcept { m_inf_rot = enable; };
void setStyles(const std::array<StyleSpec, StyleSpec::NUM_STATES> &styles);
virtual void draw();
virtual bool OnEvent(const SEvent &event);
private:
void calcOptimalDistance();
void updateTargetPos();
void updateCamera(scene::ISceneNode *target);
void setCameraRotation(v3f rot);
/// @return true indicates that the rotation was corrected
bool correctBounds(v3f &rot);
void cameraLoop();
void updateCameraPos() { m_cam_pos = m_cam->getPosition(); };
v3f getCameraRotation() const { return (m_cam_pos - m_target_pos).getHorizontalAngle(); };
void rotateCamera(const v3f &delta) { setCameraRotation(getCameraRotation() + delta); };
scene::ISceneManager *m_smgr;
video::IVideoDriver *m_driver;
scene::ICameraSceneNode *m_cam;
scene::ISceneNode *m_target = nullptr;
scene::IAnimatedMeshSceneNode *m_mesh = nullptr;
f32 m_cam_distance = 50.f;
u64 m_last_time = 0;
v3f m_cam_pos;
v3f m_target_pos;
v3f m_last_target_pos;
// Cursor positions
v2f m_curr_pos;
v2f m_last_pos;
// Initial rotation
v2f m_custom_rot;
bool m_mouse_ctrl = true;
bool m_update_cam = false;
bool m_inf_rot = false;
bool m_initial_rotation = true;
video::SColor m_bgcolor = 0;
};
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