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game.cpp
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game.cpp
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#include "game.h"
#include <SDL2/SDL_ttf.h>
#include <SDL2/SDL.h>
#include "paddle.h"
#include "ball.h"
#include <iostream>
#include <string>
#include <sstream>
using namespace std;
Game::Game(std::string s)
{
frames_rendered = 0;
isComplete = false;
if(SDL_Init(SDL_INIT_VIDEO) < 0)
{
throw InitFailed();
}
if(TTF_Init() < 0)
{
cerr << "Couldnt initialize TTF!" << endl;
throw InitFailed();
}
TitleFont = TTF_OpenFont("./arial.ttf",26);
SubtitleFont = TTF_OpenFont("./arial.ttf",20);
ScoreFont = TTF_OpenFont("./arial.ttf",15);
ResultFont = TTF_OpenFont("./arial.ttf",26);
window = SDL_CreateWindow(s.c_str(),WIN_X,WIN_Y,WIN_W,WIN_H,SDL_WINDOW_SHOWN);
surface = SDL_GetWindowSurface(window);
renderer = SDL_CreateRenderer(window,-1,SDL_RENDERER_ACCELERATED);
left_paddle = new Paddle(LEFT_PADDLE_INIT_POS_X,LEFT_PADDLE_INIT_POS_Y);
right_paddle = new Paddle(RIGHT_PADDLE_INIT_POS_X,RIGHT_PADDLE_INIT_POS_Y);
ball = new Ball(BALL_RADIUS);
left_paddle->render(renderer);
right_paddle->render(renderer);
}
void Game::renderNextFrame()
{
SDL_SetRenderDrawColor(renderer,0,0,0,0);
SDL_RenderClear(renderer);
if(frames_rendered < MESSAGE_DISPLAY_FRAMES)
{
displayMessage(TitleFont,SDL_Color{255,255,255},"Pong++",TITLE_X,TITLE_Y,TITLE_W,TITLE_H);
displayMessage(SubtitleFont,SDL_Color{0,0,255},"created by Boddulus",SUBT_X,SUBT_Y,SUBT_W,SUBT_H);
}
ball->move();
ball->checkCollision(left_paddle,right_paddle) ;// also checks collisions with walls.
left_paddle->render(renderer);
right_paddle->render(renderer);
ball->render(renderer);
displayScore();
if(left_paddle->score == GAME_MAX_SCORE)
{
displayMessage(ResultFont,SDL_Color{255,255,0},"WINS!",LEFT_RES_X,LEFT_RES_Y,LEFT_RES_W,LEFT_RES_H);
isComplete = true;
}
else if(right_paddle->score == GAME_MAX_SCORE)
{
displayMessage(ResultFont,SDL_Color{255,255,0},"WINS!",RIGHT_RES_X,RIGHT_RES_Y,RIGHT_RES_W,RIGHT_RES_H);
isComplete = true;
}
SDL_RenderPresent(renderer);
if(frames_rendered <= MESSAGE_DISPLAY_FRAMES)
frames_rendered++;
}
void Game::startGame()
{
SDL_Event event;
bool hasQuit = false;
while(!hasQuit)
{
while(SDL_PollEvent(&event))
{
if(event.type == SDL_QUIT)
{
hasQuit = true;
break;
}
const Uint8 *keyState = SDL_GetKeyboardState(NULL);
if(keyState[SDL_SCANCODE_UP])
{
right_paddle->moveUp();
}
if(keyState[SDL_SCANCODE_DOWN])
{
right_paddle->moveDown();
}
if(keyState[SDL_SCANCODE_W])
{
left_paddle->moveUp();
}
if(keyState[SDL_SCANCODE_S])
{
left_paddle->moveDown();
}
}
if(!isComplete)
{
renderNextFrame();
}
}
}
void Game::displayScore()
{
SDL_Color White = {0, 255, 0};
ostringstream os1;
ostringstream os2;
os1 << "SCORE: " << left_paddle->score;
os2 << "SCORE: " << right_paddle->score;
displayMessage(ScoreFont,SDL_Color{0,255,0},os1.str(),10,10,100,50);
displayMessage(ScoreFont,SDL_Color{0,255,0},os2.str(),WIN_W-100,10,100,50);
}
void Game::displayMessage(TTF_Font *font,SDL_Color color,string msg,int x,int y,int w, int h)
{
SDL_Surface* surfaceMessage = TTF_RenderText_Solid(font, msg.c_str(), color);
if(surfaceMessage == NULL)
{
cerr << "couldnt create font surface!" << endl;
return;
}
SDL_Texture* Message = SDL_CreateTextureFromSurface(renderer, surfaceMessage);
if(Message == NULL)
{
cerr << "couldnt create font texture!" << endl;
return;
}
SDL_Rect Message_rect; //create a rect
Message_rect.x = x;
Message_rect.y = y;
Message_rect.w = w;
Message_rect.h = h;
SDL_RenderCopy(renderer, Message, NULL, &Message_rect);
SDL_FreeSurface(surfaceMessage);
SDL_DestroyTexture(Message);
}