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Askou
79 lines
2.3 KiB
C++
79 lines
2.3 KiB
C++
//
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// Created by Tom Augier on 05/06/2021
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//
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#include "CameraSystem.hpp"
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#include "Entity/Entity.hpp"
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#include "Component/Tag/TagComponent.hpp"
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namespace BBM
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{
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CameraSystem::CameraSystem(WAL::Wal &wal)
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: System(wal)
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{}
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bool CameraSystem::introAnimation(WAL::ViewEntity<CameraComponent, PositionComponent> &entity, bool restart)
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{
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auto &pos = entity.get<PositionComponent>();
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static Vector3f posTarget(8, 25, 7);
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static bool hasEnded = false;
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if (restart) {
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hasEnded = false;
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return (false);
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}
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if (pos.position.distance(posTarget) < 2 || hasEnded) {
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hasEnded = true;
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return (true);
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}
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auto &cam = entity.get<CameraComponent>();
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pos.position += (posTarget - pos.position) / 100;
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return (false);
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}
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void CameraSystem::onUpdate(WAL::ViewEntity<CameraComponent, PositionComponent> &entity,
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std::chrono::nanoseconds dtime)
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{
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if (!introAnimation(entity))
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return;
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auto &pos = entity.get<PositionComponent>();
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auto &cam = entity.get<CameraComponent>();
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Vector3f newCameraPos = Vector3f(-1, -1, -1);
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std::vector<Vector3f> playerPos;
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float maxDist = 0;
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float lowerXDist = 0;
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float lowerZDist = 0;
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for (auto &[entity, pos, _] : this->_wal.getScene()->view<PositionComponent, TagComponent<Player>>()) {
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if (!entity.hasComponent<ControllableComponent>())
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entity.addComponent<ControllableComponent>();
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playerPos.emplace_back(pos.position);
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}
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if (playerPos.size() == 0)
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introAnimation(entity, true);
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if (playerPos.size() == 1)
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newCameraPos = playerPos[0];
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for (int i = 0; i < playerPos.size(); i++)
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for (int j = 0; j < playerPos.size(); j++) {
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if (maxDist < playerPos[i].distance(playerPos[j])) {
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maxDist = playerPos[i].distance(playerPos[j]);
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newCameraPos = (playerPos[i] + playerPos[j]) / 2;
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}
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if (lowerXDist < std::abs((playerPos[i].x - playerPos[j].x)))
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lowerXDist = std::abs((playerPos[i].x - playerPos[j].x));
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if (lowerZDist < std::abs((playerPos[i].z - playerPos[j].z)))
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lowerZDist = std::abs((playerPos[i].z - playerPos[j].z));
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}
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maxDist += (lowerXDist + lowerZDist) / 2;
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if (maxDist < 14)
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maxDist = 14;
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if (maxDist > 25)
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maxDist = 25;
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cam.target += (newCameraPos.abs() - pos.position.abs()) / 10;
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newCameraPos.y = maxDist;
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newCameraPos.z -= 1;
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pos.position += (newCameraPos.abs() - pos.position.abs()) / 10;
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}
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} |