421 lines
12 KiB
C++
421 lines
12 KiB
C++
// * This file is part of the COLOBOT source code
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// * Copyright (C) 2001-2008, Daniel ROUX & EPSITEC SA, www.epsitec.ch
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// * Copyright (C) 2012, Polish Portal of Colobot (PPC)
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// *
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// * This program is free software: you can redistribute it and/or modify
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// * it under the terms of the GNU General Public License as published by
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// * the Free Software Foundation, either version 3 of the License, or
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// * (at your option) any later version.
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// *
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// * This program is distributed in the hope that it will be useful,
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// * but WITHOUT ANY WARRANTY; without even the implied warranty of
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// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// * GNU General Public License for more details.
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// *
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// * You should have received a copy of the GNU General Public License
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// * along with this program. If not, see http://www.gnu.org/licenses/.
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#include "graphics/engine/lightning.h"
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#include "app/app.h"
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#include "common/logger.h"
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#include "common/iman.h"
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#include "graphics/core/device.h"
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#include "graphics/engine/camera.h"
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#include "graphics/engine/terrain.h"
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#include "math/geometry.h"
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#include "object/object.h"
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#include "object/robotmain.h"
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#include "object/auto/autopara.h"
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// Graphics module namespace
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namespace Gfx {
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CLightning::CLightning(CEngine* engine)
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{
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m_engine = engine;
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m_terrain = nullptr;
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m_camera = nullptr;
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m_sound = nullptr;
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Flush();
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}
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CLightning::~CLightning()
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{
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}
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void CLightning::Flush()
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{
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m_lightningExists = false;
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m_phase = LP_WAIT;
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m_speed = 0.0f;
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m_progress = 0.0f;
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for (int i = 0; i < FLASH_SEGMENTS; i++)
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{
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m_shift[i] = Math::Point(0.0f, 0.0f);
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m_width[i] = 1.0f;
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}
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}
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bool CLightning::EventProcess(const Event &event)
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{
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if (event.type == EVENT_FRAME)
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return EventFrame(event);
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return true;
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}
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bool CLightning::EventFrame(const Event &event)
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{
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if (m_engine->GetPause()) return true;
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if (m_engine->GetMovieLock()) return true;
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m_progress += event.rTime*m_speed;
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if (m_phase == LP_WAIT)
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{
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if (m_progress >= 1.0f)
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{
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m_pos.x = (Math::Rand()-0.5f)*(3200.0f-200.0f);
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m_pos.z = (Math::Rand()-0.5f)*(3200.0f-200.0f);
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m_pos.y = 0.0f;
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CObject* obj = SearchObject(m_pos);
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if (obj == nullptr)
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{
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m_terrain->AdjustToFloor(m_pos, true);
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}
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else
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{
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m_pos = obj->GetPosition(0);
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m_terrain->AdjustToFloor(m_pos, true);
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ObjectType type = obj->GetType();
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if (type == OBJECT_BASE)
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{
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m_pos.y += 120.0f; // top of the rocket
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}
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else if (type == OBJECT_PARA)
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{
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CAutoPara* automat = static_cast<CAutoPara*>(obj->GetAuto());
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if (automat != nullptr)
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automat->StartLightning();
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m_pos.y += 67.0f; // top of lightning rod
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}
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else
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{
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obj->ExploObject(EXPLO_BOUM, 1.0f);
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}
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}
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Math::Vector eye = m_engine->GetEyePt();
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float dist = Math::Distance(m_pos, eye);
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float deep = m_engine->GetDeepView();
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if (dist < deep)
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{
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Math::Vector pos = eye+((m_pos-eye)*0.2f); // like so close!
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m_sound->Play(SOUND_BLITZ, pos);
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m_camera->StartOver(CAM_OVER_EFFECT_LIGHTNING, m_pos, 1.0f);
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m_phase = LP_FLASH;
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m_progress = 0.0f;
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m_speed = 1.0f;
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}
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}
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}
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if (m_phase == LP_FLASH)
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{
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if (m_progress < 1.0f)
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{
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float max = 5.0f;
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for (int i = 0; i < FLASH_SEGMENTS; i++)
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{
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max += 0.4f;
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m_shift[i].x += (Math::Rand()-0.5f)*max*2.0f;
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if ( m_shift[i].x < -max ) m_shift[i].x = -max;
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if ( m_shift[i].x > max ) m_shift[i].x = max;
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m_shift[i].y += (Math::Rand()-0.5f)*max*2.0f;
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if ( m_shift[i].y < -max ) m_shift[i].y = -max;
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if ( m_shift[i].y > max ) m_shift[i].y = max;
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m_width[i] += (Math::Rand()-0.5f)*2.0f;
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if ( m_width[i] < 1.0f ) m_width[i] = 1.0f;
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if ( m_width[i] > 6.0f ) m_width[i] = 6.0f;
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}
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m_shift[0].x = 0.0f;
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m_shift[0].y = 0.0f;
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m_width[0] = 0.0f;
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}
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else
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{
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m_phase = LP_WAIT;
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m_progress = 0.0f;
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m_speed = 1.0f / (1.0f+Math::Rand()*m_delay);
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}
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}
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return true;
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}
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bool CLightning::Create(float sleep, float delay, float magnetic)
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{
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m_lightningExists = true;
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if (sleep < 1.0f) sleep = 1.0f;
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m_sleep = sleep;
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m_delay = delay;
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m_magnetic = magnetic;
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m_phase = LP_WAIT;
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m_progress = 0.0f;
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m_speed = 1.0f / m_sleep;
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if (m_terrain == nullptr)
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m_terrain = CRobotMain::GetInstancePointer()->GetTerrain();
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if (m_camera == nullptr)
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m_camera = CRobotMain::GetInstancePointer()->GetCamera();
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if (m_sound == nullptr)
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m_sound = CApplication::GetInstancePointer()->GetSound();
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return false;
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}
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bool CLightning::GetStatus(float &sleep, float &delay, float &magnetic, float &progress)
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{
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if (! m_lightningExists) return false;
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sleep = m_sleep;
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delay = m_delay;
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magnetic = m_magnetic;
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progress = m_progress;
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return true;
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}
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bool CLightning::SetStatus(float sleep, float delay, float magnetic, float progress)
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{
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m_lightningExists = true;
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m_sleep = sleep;
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m_delay = delay;
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m_magnetic = magnetic;
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m_progress = progress;
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m_phase = LP_WAIT;
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m_speed = 1.0f/m_sleep;
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return true;
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}
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void CLightning::Draw()
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{
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if (!m_lightningExists) return;
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if (m_phase != LP_FLASH) return;
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CDevice* device = m_engine->GetDevice();
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Math::Matrix mat;
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mat.LoadIdentity();
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device->SetTransform(TRANSFORM_WORLD, mat);
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m_engine->SetTexture("effect00.png");
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m_engine->SetState(ENG_RSTATE_TTEXTURE_BLACK);
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Math::Point texInf;
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texInf.x = 64.5f/256.0f;
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texInf.y = 33.0f/256.0f;
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Math::Point texSup;
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texSup.x = 95.5f/256.0f;
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texSup.y = 34.0f/256.0f; // blank
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Math::Vector p1 = m_pos;
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Math::Vector eye = m_engine->GetEyePt();
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float a = Math::RotateAngle(eye.x-p1.x, eye.z-p1.z);
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Math::Vector n = Math::Normalize(p1-eye);
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Math::Vector corner[4];
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Vertex vertex[4];
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for (int i = 0; i < FLASH_SEGMENTS-1; i++)
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{
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Math::Vector p2 = p1;
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p2.y += 8.0f+0.2f*i;
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Math::Point rot;
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Math::Vector p = p1;
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p.x += m_width[i];
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rot = Math::RotatePoint(Math::Point(p1.x, p1.z), a+Math::PI/2.0f, Math::Point(p.x, p.z));
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corner[0].x = rot.x+m_shift[i].x;
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corner[0].y = p1.y;
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corner[0].z = rot.y+m_shift[i].y;
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rot = Math::RotatePoint(Math::Point(p1.x, p1.z), a-Math::PI/2.0f, Math::Point(p.x, p.z));
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corner[1].x = rot.x+m_shift[i].x;
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corner[1].y = p1.y;
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corner[1].z = rot.y+m_shift[i].y;
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p = p2;
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p.x += m_width[i+1];
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rot = Math::RotatePoint(Math::Point(p2.x, p2.z), a+Math::PI/2.0f, Math::Point(p.x, p.z));
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corner[2].x = rot.x+m_shift[i+1].x;
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corner[2].y = p2.y;
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corner[2].z = rot.y+m_shift[i+1].y;
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rot = Math::RotatePoint(Math::Point(p2.x, p2.z), a-Math::PI/2.0f, Math::Point(p.x, p.z));
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corner[3].x = rot.x+m_shift[i+1].x;
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corner[3].y = p2.y;
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corner[3].z = rot.y+m_shift[i+1].y;
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if (p2.y < p1.y)
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{
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vertex[0] = Vertex(corner[1], n, Math::Point(texSup.x, texSup.y));
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vertex[1] = Vertex(corner[0], n, Math::Point(texInf.x, texSup.y));
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vertex[2] = Vertex(corner[3], n, Math::Point(texSup.x, texInf.y));
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vertex[3] = Vertex(corner[2], n, Math::Point(texInf.x, texInf.y));
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}
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else
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{
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vertex[0] = Vertex(corner[0], n, Math::Point(texSup.x, texSup.y));
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vertex[1] = Vertex(corner[1], n, Math::Point(texInf.x, texSup.y));
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vertex[2] = Vertex(corner[2], n, Math::Point(texSup.x, texInf.y));
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vertex[3] = Vertex(corner[3], n, Math::Point(texInf.x, texInf.y));
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}
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device->DrawPrimitive(PRIMITIVE_TRIANGLE_STRIP, vertex, 4);
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m_engine->AddStatisticTriangle(2);
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p1 = p2;
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}
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}
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CObject* CLightning::SearchObject(Math::Vector pos)
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{
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// Lightning conductors
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std::vector<CObject*> paraObj;
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paraObj.reserve(100);
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std::vector<Math::Vector> paraObjPos;
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paraObjPos.reserve(100);
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CInstanceManager* iMan = CInstanceManager::GetInstancePointer();
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// Seeking the object closest to the point of impact of lightning.
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CObject* bestObj = 0;
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float min = 100000.0f;
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for (int i = 0; i < 1000000; i++)
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{
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CObject* obj = static_cast<CObject*>( iMan->SearchInstance(CLASS_OBJECT, i) );
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if (obj == nullptr) break;
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if (!obj->GetActif()) continue; // inactive object?
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if (obj->GetTruck() != nullptr) continue; // object transported?
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ObjectType type = obj->GetType();
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if ( type == OBJECT_BASE ||
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type == OBJECT_PARA ) // building a lightning effect?
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{
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paraObj.push_back(obj);
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paraObjPos.push_back(obj->GetPosition(0));
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}
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float detect = 0.0f;
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if ( type == OBJECT_BASE ||
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type == OBJECT_DERRICK ||
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type == OBJECT_FACTORY ||
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type == OBJECT_REPAIR ||
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type == OBJECT_DESTROYER||
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type == OBJECT_STATION ||
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type == OBJECT_CONVERT ||
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type == OBJECT_TOWER ||
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type == OBJECT_RESEARCH ||
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type == OBJECT_RADAR ||
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type == OBJECT_INFO ||
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type == OBJECT_ENERGY ||
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type == OBJECT_LABO ||
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type == OBJECT_NUCLEAR ||
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type == OBJECT_PARA ||
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type == OBJECT_SAFE ||
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type == OBJECT_HUSTON )
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{
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detect = m_magnetic;
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}
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if ( type == OBJECT_METAL ||
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type == OBJECT_POWER ||
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type == OBJECT_ATOMIC )
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{
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detect = m_magnetic*0.3f;
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}
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if ( type == OBJECT_MOBILEfa ||
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type == OBJECT_MOBILEta ||
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type == OBJECT_MOBILEwa ||
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type == OBJECT_MOBILEia ||
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type == OBJECT_MOBILEfc ||
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type == OBJECT_MOBILEtc ||
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type == OBJECT_MOBILEwc ||
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type == OBJECT_MOBILEic ||
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type == OBJECT_MOBILEfi ||
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type == OBJECT_MOBILEti ||
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type == OBJECT_MOBILEwi ||
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type == OBJECT_MOBILEii ||
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type == OBJECT_MOBILEfs ||
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type == OBJECT_MOBILEts ||
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type == OBJECT_MOBILEws ||
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type == OBJECT_MOBILEis ||
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type == OBJECT_MOBILErt ||
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type == OBJECT_MOBILErc ||
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type == OBJECT_MOBILErr ||
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type == OBJECT_MOBILErs ||
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type == OBJECT_MOBILEsa ||
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type == OBJECT_MOBILEft ||
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type == OBJECT_MOBILEtt ||
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type == OBJECT_MOBILEwt ||
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type == OBJECT_MOBILEit ||
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type == OBJECT_MOBILEdr )
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{
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detect = m_magnetic*0.5f;
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}
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if (detect == 0.0f) continue;
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Math::Vector oPos = obj->GetPosition(0);
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float dist = Math::DistanceProjected(oPos, pos);
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if (dist > detect) continue;
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if (dist < min)
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{
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min = dist;
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bestObj = obj;
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}
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}
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if (bestObj == nullptr)
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return nullptr; // nothing found
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// Under the protection of a lightning conductor?
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Math::Vector oPos = bestObj->GetPosition(0);
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for (int i = paraObj.size()-1; i >= 0; i--)
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{
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float dist = Math::DistanceProjected(oPos, paraObjPos[i]);
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if (dist <= LTNG_PROTECTION_RADIUS)
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return paraObj[i];
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}
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return bestObj;
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}
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} // namespace Gfx
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