John McCardle
726a9cf09d
Full screen "wasm-game" for viewport compatibility between desktop and
web interfaces. Viewport modes ("fit", "center", and "stretch") should
now work the same way under WASM/SDL and SFML. This should also enable
android or web-for-mobile aspect ratios to be supported more easily.
88 lines
2.9 KiB
C++
88 lines
2.9 KiB
C++
#include "SceneTransition.h"
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void SceneTransition::start(TransitionType t, const std::string& from, const std::string& to, float dur) {
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type = t;
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fromScene = from;
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toScene = to;
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duration = dur;
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elapsed = 0.0f;
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// Initialize render textures if needed
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if (!oldSceneTexture) {
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oldSceneTexture = std::make_unique<sf::RenderTexture>();
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oldSceneTexture->create(width, height);
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}
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if (!newSceneTexture) {
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newSceneTexture = std::make_unique<sf::RenderTexture>();
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newSceneTexture->create(width, height);
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}
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}
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void SceneTransition::update(float dt) {
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if (type == TransitionType::None) return;
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elapsed += dt;
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}
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void SceneTransition::render(sf::RenderTarget& target) {
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if (type == TransitionType::None) return;
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float progress = getProgress();
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float easedProgress = easeInOut(progress);
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float w = static_cast<float>(width);
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float h = static_cast<float>(height);
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// Update sprites with current textures
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oldSprite.setTexture(oldSceneTexture->getTexture());
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newSprite.setTexture(newSceneTexture->getTexture());
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switch (type) {
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case TransitionType::Fade:
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// Fade out old scene, fade in new scene
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oldSprite.setColor(sf::Color(255, 255, 255, 255 * (1.0f - easedProgress)));
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newSprite.setColor(sf::Color(255, 255, 255, 255 * easedProgress));
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target.draw(oldSprite);
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target.draw(newSprite);
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break;
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case TransitionType::SlideLeft:
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// Old scene slides out to left, new scene slides in from right
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oldSprite.setPosition(-w * easedProgress, 0);
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newSprite.setPosition(w * (1.0f - easedProgress), 0);
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target.draw(oldSprite);
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target.draw(newSprite);
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break;
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case TransitionType::SlideRight:
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// Old scene slides out to right, new scene slides in from left
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oldSprite.setPosition(w * easedProgress, 0);
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newSprite.setPosition(-w * (1.0f - easedProgress), 0);
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target.draw(oldSprite);
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target.draw(newSprite);
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break;
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case TransitionType::SlideUp:
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// Old scene slides up, new scene slides in from bottom
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oldSprite.setPosition(0, -h * easedProgress);
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newSprite.setPosition(0, h * (1.0f - easedProgress));
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target.draw(oldSprite);
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target.draw(newSprite);
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break;
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case TransitionType::SlideDown:
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// Old scene slides down, new scene slides in from top
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oldSprite.setPosition(0, h * easedProgress);
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newSprite.setPosition(0, -h * (1.0f - easedProgress));
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target.draw(oldSprite);
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target.draw(newSprite);
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break;
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default:
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break;
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}
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}
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float SceneTransition::easeInOut(float t) {
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// Smooth ease-in-out curve
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return t < 0.5f ? 2 * t * t : -1 + (4 - 2 * t) * t;
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}
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