169 lines
3.9 KiB
C++
169 lines
3.9 KiB
C++
#include "game_scene.h"
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#include <cmath>
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// ========================================
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// PlayerNode 实现
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// ========================================
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PlayerNode::PlayerNode() {
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setName("Player");
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setTag(1);
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// 设置玩家尺寸
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setSize(64.0f, 64.0f);
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// 设置锚点为中心点
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setAnchor(0.5f, 0.5f);
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// 添加精灵渲染组件
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auto sprite = makePtr<SpriteRenderer>();
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sprite->setColor(Color::Blue);
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addComponent(sprite);
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}
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void PlayerNode::onUpdate(float dt) {
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time_ += dt;
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// 简单的圆周运动
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float radius = 200.0f;
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float x = 640.0f + radius * std::cos(time_ * 0.5f);
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float y = 360.0f + radius * std::sin(time_ * 0.5f);
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setPosition(x, y);
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// 根据移动方向旋转（顺时针，使用负角度）
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float angle = -time_ * 0.5f * 57.2958f + 90.0f;
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setRotation(angle);
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}
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// ========================================
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// RotatingDecoration 实现
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// ========================================
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RotatingDecoration::RotatingDecoration() {
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setName("Decoration");
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// 设置尺寸
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setSize(32.0f, 32.0f);
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// 设置锚点为中心
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setAnchor(0.5f, 0.5f);
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// 添加精灵渲染组件
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auto sprite = makePtr<SpriteRenderer>();
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sprite->setColor(Color::Yellow);
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addComponent(sprite);
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}
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void RotatingDecoration::onUpdate(float dt) {
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// 自转（顺时针，使用负角度）
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setRotation(getRotation() - rotationSpeed_ * dt);
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}
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// ========================================
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// GameScene 实现
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// ========================================
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GameScene::GameScene() {
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// 场景初始化
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}
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void GameScene::onEnter() {
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Scene::onEnter();
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// 创建相机
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createCamera();
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// 创建玩家
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createPlayer();
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// 创建装饰物
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createDecorations();
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}
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void GameScene::onExit() {
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// 清理资源
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player_.reset();
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decorations_.clear();
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Scene::onExit();
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}
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void GameScene::update(float dt) {
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Scene::update(dt);
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sceneTime_ += dt;
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// 更新玩家
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if (player_) {
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player_->onUpdate(dt);
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}
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// 更新装饰物
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for (auto &decoration : decorations_) {
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decoration->onUpdate(dt);
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}
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}
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void GameScene::createPlayer() {
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player_ = makePtr<PlayerNode>();
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player_->setPosition(640.0f, 360.0f);
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addChild(player_);
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}
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void GameScene::createDecorations() {
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// 创建围绕玩家旋转的装饰物
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int count = 8;
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float radius = 150.0f;
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for (int i = 0; i < count; ++i) {
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auto decoration = makePtr<RotatingDecoration>();
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// 计算位置（圆形分布）
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float angle = (2.0f * 3.14159f * i) / count;
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float x = 640.0f + radius * std::cos(angle);
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float y = 360.0f + radius * std::sin(angle);
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decoration->setPosition(x, y);
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decoration->setRotationSpeed(45.0f + i * 10.0f);
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// 设置不同颜色
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auto sprite = decoration->getComponent<SpriteRenderer>();
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if (sprite) {
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float hue = static_cast<float>(i) / count;
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// 简单的HSV到RGB转换
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float r = std::abs(hue * 6.0f - 3.0f) - 1.0f;
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float g = 2.0f - std::abs(hue * 6.0f - 2.0f);
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float b = 2.0f - std::abs(hue * 6.0f - 4.0f);
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sprite->setColor(Color(std::max(0.0f, std::min(1.0f, r)),
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std::max(0.0f, std::min(1.0f, g)),
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std::max(0.0f, std::min(1.0f, b)), 1.0f));
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}
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decorations_.push_back(decoration);
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addChild(decoration);
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}
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}
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void GameScene::createCamera() {
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// 创建相机节点
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auto cameraNode = makePtr<Node>();
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cameraNode->setName("MainCamera");
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// 相机位置在(0, 0)，这样世界坐标直接映射到屏幕
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cameraNode->setPosition(0.0f, 0.0f);
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// 添加相机组件
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auto camera = makePtr<CameraComponent>();
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// 使用标准的2D投影：左上角为(0, 0)，右下角为(1280, 720)
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// Y轴向下：bottom=720, top=0
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camera->setOrtho(0.0f, 1280.0f, 720.0f, 0.0f, -1.0f, 1.0f);
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cameraNode->addComponent(camera);
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// 设置为主相机
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setMainCamera(camera);
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// 添加相机节点到场景
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addChild(cameraNode);
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}
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