92 lines
3.5 KiB
C++
92 lines
3.5 KiB
C++
//
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// Copyright (c) 2008-2020 the Urho3D project.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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#include <Urho3D/Graphics/Graphics.h>
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#include <Urho3D/Graphics/Renderer.h>
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#include <Urho3D/Input/Controls.h>
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#include <Urho3D/Input/Input.h>
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#include "Character.h"
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#include "Touch.h"
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const float GYROSCOPE_THRESHOLD = 0.1f;
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Touch::Touch(Context* context, float touchSensitivity) :
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Object(context),
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touchSensitivity_(touchSensitivity),
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cameraDistance_(CAMERA_INITIAL_DIST),
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zoom_(false),
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useGyroscope_(false)
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{
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}
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Touch::~Touch() = default;
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void Touch::UpdateTouches(Controls& controls) // Called from HandleUpdate
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{
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zoom_ = false; // reset bool
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auto* input = GetSubsystem<Input>();
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// Zoom in/out
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if (input->GetNumTouches() == 2)
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{
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TouchState* touch1 = input->GetTouch(0);
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TouchState* touch2 = input->GetTouch(1);
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// Check for zoom pattern (touches moving in opposite directions and on empty space)
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if (!touch1->touchedElement_ && !touch2->touchedElement_ && ((touch1->delta_.y_ > 0 && touch2->delta_.y_ < 0) || (touch1->delta_.y_ < 0 && touch2->delta_.y_ > 0)))
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zoom_ = true;
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else
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zoom_ = false;
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if (zoom_)
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{
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int sens = 0;
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// Check for zoom direction (in/out)
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if (Abs(touch1->position_.y_ - touch2->position_.y_) > Abs(touch1->lastPosition_.y_ - touch2->lastPosition_.y_))
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sens = -1;
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else
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sens = 1;
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cameraDistance_ += Abs(touch1->delta_.y_ - touch2->delta_.y_) * sens * touchSensitivity_ / 50.0f;
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cameraDistance_ = Clamp(cameraDistance_, CAMERA_MIN_DIST, CAMERA_MAX_DIST); // Restrict zoom range to [1;20]
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}
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}
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// Gyroscope (emulated by SDL through a virtual joystick)
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if (useGyroscope_ && input->GetNumJoysticks() > 0) // numJoysticks = 1 on iOS & Android
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{
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JoystickState* joystick = input->GetJoystickByIndex(0);
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if (joystick->GetNumAxes() >= 2)
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{
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if (joystick->GetAxisPosition(0) < -GYROSCOPE_THRESHOLD)
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controls.Set(CTRL_LEFT, true);
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if (joystick->GetAxisPosition(0) > GYROSCOPE_THRESHOLD)
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controls.Set(CTRL_RIGHT, true);
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if (joystick->GetAxisPosition(1) < -GYROSCOPE_THRESHOLD)
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controls.Set(CTRL_FORWARD, true);
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if (joystick->GetAxisPosition(1) > GYROSCOPE_THRESHOLD)
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controls.Set(CTRL_BACK, true);
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}
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}
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}
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