80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
// ============================================================================
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// Ground.cpp - 地面类实现
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// ============================================================================
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#include "Ground.h"
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#include "BaseScene.h"
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#include "ResLoader.h"
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namespace flappybird {
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Ground::Ground() {
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moving_ = true;
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// 使用游戏逻辑高度，而不是窗口高度
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float screenHeight = GAME_HEIGHT;
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// 获取地面纹理帧
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auto landFrame = ResLoader::getKeyFrame("land");
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if (!landFrame)
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return;
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// 获取地面纹理和矩形
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auto texture = landFrame->getTexture();
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auto rect = landFrame->getRect();
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float groundWidth = rect.size.width;
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float groundHeight = rect.size.height;
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// 创建第一块地面
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ground1_ = extra2d::Sprite::create(texture, rect);
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ground1_->setAnchor(extra2d::Vec2(0.0f, 1.0f)); // 锚点设在左下角
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ground1_->setPosition(extra2d::Vec2(0.0f, screenHeight));
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addChild(ground1_);
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// 创建第二块地面，紧挨在第一块右边
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ground2_ = extra2d::Sprite::create(texture, rect);
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ground2_->setAnchor(extra2d::Vec2(0.0f, 1.0f));
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ground2_->setPosition(extra2d::Vec2(groundWidth - 1.0f, screenHeight));
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addChild(ground2_);
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}
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void Ground::onUpdate(float dt) {
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extra2d::Node::onUpdate(dt);
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if (!moving_)
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return;
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if (!ground1_ || !ground2_)
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return;
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// 获取地面宽度（从纹理矩形获取）
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float groundWidth = ground1_->getTextureRect().size.width;
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// 移动两块地面
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extra2d::Vec2 pos1 = ground1_->pos();
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extra2d::Vec2 pos2 = ground2_->pos();
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pos1.x -= speed * dt;
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pos2.x -= speed * dt;
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// 当地面完全移出屏幕左侧时，重置到右侧
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if (pos1.x <= -groundWidth) {
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pos1.x = pos2.x + groundWidth - 1.0f;
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}
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if (pos2.x <= -groundWidth) {
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pos2.x = pos1.x + groundWidth - 1.0f;
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}
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ground1_->setPosition(pos1);
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ground2_->setPosition(pos2);
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}
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void Ground::stop() { moving_ = false; }
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float Ground::height() const {
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auto landFrame = ResLoader::getKeyFrame("land");
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return landFrame ? landFrame->getRect().size.height : 112.0f;
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}
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} // namespace flappybird
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