本文整理汇总了C++中Hud::render方法的典型用法代码示例。如果您正苦于以下问题：C++ Hud::render方法的具体用法？C++ Hud::render怎么用？C++ Hud::render使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Hud的用法示例。
在下文中一共展示了Hud::render方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: main
int main(int argc, char **argv) {
srand(static_cast<unsigned int>(time(nullptr))); //seed random number generator with the current time
if (SDL_Init(SDL_INIT_EVERYTHING) != 0) {
logSDLError("SDL_Init");
}
if ((IMG_Init(IMG_INIT_PNG) & IMG_INIT_PNG) != IMG_INIT_PNG) {
logSDLError("IMG_Init");
}
if (TTF_Init() == -1) {
logSDLError("TTF_Init");
}
SDL_Window *window = SDL_CreateWindow("Pong", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
if (window == nullptr) {
logSDLError("CreateWindow");
}
//SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
if (renderer == nullptr) {
logSDLError("CreateRenderer");
}
FpsTracker fpsTracker(100);
WorldState currentWorldState;
World *world = new World(renderer, SCREEN_WIDTH, SCREEN_HEIGHT, currentWorldState);
world->startRound(currentWorldState);
WorldState previousWorldState=currentWorldState;
Hud *hud = new Hud(renderer, SCREEN_WIDTH, SCREEN_HEIGHT);
drawUI(hud, currentWorldState);
float dt = PHYSICS_TIMESTEP;
Uint64 currentTime = SDL_GetPerformanceCounter();
float accumulator = 0;
bool quit = false;
SDL_Event event;
while (!quit) {
const Uint64 newTime = SDL_GetPerformanceCounter();
float deltaTime = static_cast<float>(newTime - currentTime) / SDL_GetPerformanceFrequency(); //aka time for this frame
currentTime = newTime;
if (deltaTime > 0.25f) {
std::cout << "limiting delta time to 0.25f" << std::endl;
deltaTime = 0.25f; // anti "spiral of death" / breakpoints
}
accumulator += deltaTime;
int simCount = 0;
while (accumulator >= dt) {
accumulator -= dt;
previousWorldState = currentWorldState;
world->update(currentWorldState, dt); //aka integrate
if (currentWorldState.humanScore != previousWorldState.humanScore
|| currentWorldState.opponentScore != previousWorldState.opponentScore) {
drawUI(hud, currentWorldState);
}
++simCount;
}
if (simCount > 1) {
std::cout << "Simulated multiple steps:" << simCount << std::endl;
}
WorldState lerped = WorldState::lerpBetween(previousWorldState, currentWorldState, accumulator/dt);
drawFps(hud, static_cast<int>(1 / fpsTracker.calculateAverageFrameTime(deltaTime)));
SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
SDL_RenderClear(renderer);
world->render(lerped);
hud->render();
SDL_RenderPresent(renderer);
//TODO figure out where user input handling should go. @see http://gamedev.stackexchange.com/questions/8623/a-good-way-to-build-a-game-loop-in-opengl
while (SDL_PollEvent(&event)) {
switch(event.type) {
case SDL_QUIT:
quit = true;
break;
case SDL_KEYDOWN:
switch(event.key.keysym.scancode) {
case SDL_SCANCODE_ESCAPE:
quit = true;
break;
}
break;
}
}
}
std::cout << "Quitting" << std::endl;
//cleanup
//.........这里部分代码省略.........