-2
因此,我開始SDL2並通過一些教程並決定嘗試製作一個簡單的遊戲,而Pong的克隆似乎是最簡單的。但我似乎無法使右側槳在車窗上畫畫。目前我正在使用SDL_FillRenderRect,每個槳都有一個,但似乎只是讓左側出現,而不是右側。這裏是我當前的代碼:在Pong克隆中製作兩個槳的問題SDL2
#include <iostream>
#include "Pong.h"
#include "Paddle.h"
//Screen size
const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;
bool quit = false;//Has user quit?
Paddle paddleLeft;
Paddle paddleRight;
int Pong::setup(){
//Initilize SDL
SDL_Init(SDL_INIT_EVERYTHING);
window = SDL_CreateWindow("Pong",
SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
SCREEN_WIDTH,
SCREEN_HEIGHT,
SDL_WINDOW_SHOWN);
if (window == nullptr){
std::cout<<"SDL_CreateWindow error: "<<SDL_GetError()<<std::endl;
SDL_Quit();
return -1;
}
SDL_ShowCursor(0);
renderer = SDL_CreateRenderer(window,
-1,
SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
if (renderer == nullptr){
std::cout<<"SDL_CreateRenderer error: "<<SDL_GetError()<<std::endl;
SDL_Quit();
return -1;
}
int wH, wW;
//Setting the paddle to the centre of the left hand side of the screen.
SDL_GetWindowSize(window, &wW, &wH);
paddleLeft.setY((wH/2) - (paddleLeft.getPaddleHeight()/2));
paddleRight.setY((wH/2) - (paddleLeft.getPaddleHeight()/2));
//Setting the x, y, height and width of the left paddle
leftR.x = 20;
leftR.y = paddleLeft.getY();
leftR.h = paddleLeft.getPaddleWidth();
leftR.w = paddleLeft.getPaddleHeight();
//Setting the x, y, height and width of the right paddle
rightR.x = 620;
rightR.y = paddleLeft.getY();
rightR.h = paddleLeft.getPaddleWidth();
rightR.w = paddleLeft.getPaddleHeight();
return 1;//If setup fails then return -1 otherwise return 1
}
void Pong::updateGame(){
SDL_Event event;
while (SDL_PollEvent(&event)){
if (event.type == SDL_QUIT){
quit = true;
}
if (event.type == SDL_KEYDOWN){
switch (event.key.keysym.sym){
case SDLK_w: paddleLeft.setY(paddleLeft.getY() - paddleLeft.getSpeed()); break;
case SDLK_s: paddleLeft.setY(paddleLeft.getY() + paddleLeft.getSpeed()); break;
}
}
}
}
void Pong::render(){
SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
SDL_RenderClear(renderer);
leftR.x = paddleLeft.getX();
leftR.y = paddleLeft.getY();
rightR.x = paddleRight.getX();
rightR.y = paddleRight.getY();
SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
SDL_RenderFillRect(renderer, &leftR);
SDL_RenderFillRect(renderer, &rightR);
SDL_RenderPresent(renderer);
}
void Pong::cleanup(){
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
SDL_Quit();
}
void Pong::run(){
while (!quit){
updateGame();
render();
}
cleanup();
}
可能有人請點我在正確的方向上繪製右槳?如果在我的代碼中存在其他錯誤或者使其更加有效,以及如果可以指出這些錯誤,我也會很感激。提前致謝。
非常感謝!我可能從來沒有見過。我愚蠢,但我應該再次檢查它。再次感謝! :d – CharlieFan39