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GameEngine.cpp
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GameEngine.cpp
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#include "gameEngine.h"
const int FRAMES_PER_SECOND = 13;
GameEngine::GameEngine( ){
screen = NULL;
startTicks = 0;
Camera.x = 0;
Camera.y = 0;
Camera.w = SCREEN_WIDTH;
Camera.h = SCREEN_HEIGHT;
}
bool GameEngine::run (void){
if( SDL_Init( SDL_INIT_EVERYTHING ) == -1 )
return false;
if( TTF_Init() == -1)
return false;
screen = SDL_SetVideoMode( SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_SWSURFACE );
if( screen == NULL )
return false;
SDL_WM_SetCaption( "Capture the flag", NULL );
if(loadFiles() == false)
return 1;
bool runmenu = true ;
while(runmenu == true){
int x = 0, y = 0;
SDL_GetMouseState(&x, &y);
while(SDL_PollEvent(&Event)){
if(Event.type == SDL_QUIT)
runmenu = false;
else if(Event.type == SDL_MOUSEBUTTONDOWN){
if( (x >= 456 && y >= 81 ) && (x <= 842 && y <= 131 )){
if(playGame() == false)
return 1;
}
else if( (x >= 456 && y >= 133 ) && (x <= 842 && y <= 183 )){
if(helpPage() == false)
return 1;
}
else if( (x >= 456 && y >= 185 ) && (x <= 842 && y <= 235 )){
runmenu = false;
}
}
}
blitSurface(0, 0, mainmenu , screen ,&screen->clip_rect );
SDL_Flip(screen);
}
return 0;
}
bool GameEngine::helpPage(){
bool quit = false;
while( quit == false ){
startTimer();
while( SDL_PollEvent( &Event ) ){
switch (Event.type) {
case SDL_QUIT: {
return false;
break;
}
case SDL_KEYDOWN:
if(Event.key.keysym.sym == SDLK_ESCAPE){
quit = true;
startTicks = 0;
}
}
}
SDL_FillRect( screen, &screen->clip_rect, SDL_MapRGB( screen->format, 0xFF, 0xFF, 0xFF ) );
blitSurface(0, 0, howtoplay , screen ,&screen->clip_rect );
SDL_Flip(screen);
if( getTime() < 1000 / FRAMES_PER_SECOND )
SDL_Delay( ( 1000 / FRAMES_PER_SECOND ) - getTime() );
}
return true;
}
bool GameEngine::playGame(){
int enmPos[11][2]={ {80 , 440},
{680 , 520},
{960 , 520},
{680, 1000},
{1040 , 920},
{1480 , 120},
{1600 , 120},
{1720 , 1080},
{1760 , 1080},
{2040 , 280},
{1920 , 520},
};
SDL_Color text = {0,0,0};
Tile *tiles[ TOTAL_TILES ];
Castle flag(2160, 120 , screen , &Camera , castle );
Enemy *Enm[TOTAL_ENEMY];
for( int i = 0 ; i < TOTAL_ENEMY ; i++){
int x;
if ((i % 2)==0)
x = 2;
else
x = 1;
Enm[i] = new Enemy(enmPos[i][0], enmPos[i][1] , x , screen , &Camera , enemy );
}
Hero player(screen , &Camera , hero, Enm , tiles,&flag);
if(setTiles( tiles ) == false)
return 1;
int sTime = getTime();
bool quit = false;
bool dead = false;
bool win = false;
bool timesup = false;
while( quit == false )
{
startTimer();
if(player.getLives()==0){
quit = true;
dead = true;
win = false;
}
if(player.flagCaptured()== true){
quit = true;
win = true;
dead = false;
}
while( SDL_PollEvent( &Event ) )
{
switch (Event.type) {
case SDL_QUIT: {
quit = true;
dead = false;
win = false;
return false;
break;
}
case SDL_KEYDOWN:
player.onKeyDown( &Event );
if(Event.key.keysym.sym == SDLK_ESCAPE){
quit = true;
dead = false;
win = false;
startTicks = 0;
Camera.x = 0;
Camera.y = 0;
}
break ;
case SDL_KEYUP: player.onKeyUp( &Event ); break ;
}
}
player.move();
for( int i = 0 ; i < TOTAL_ENEMY ; i++){
Enm[i]->move();
}
SDL_FillRect( screen, &screen->clip_rect, SDL_MapRGB( screen->format, 0xFF, 0xFF, 0xFF ) );
player.setCamera();
for(int i = 0 ; i <TOTAL_TILES ; i ++ )
tiles[ i ]->showTile();
player.show();
for( int i = 0 ; i < TOTAL_ENEMY ; i++){
Enm[i]->show();
}
flag.showCastle();
scroll = loadImage("scroll.png");
if( scroll == NULL )
return false;
std::stringstream life;
life << "Lives:" << player.getLives();
score = TTF_RenderText_Solid( Ninja, life.str().c_str(), text );
blitSurface(680 , 5 ,score , scroll , &score->clip_rect);
blitSurface(0,0,scroll,screen , &scroll->clip_rect);
int seconds , minutes;
seconds =(( SDL_GetTicks() - sTime)/ 1000) % 60 ;
minutes =(( SDL_GetTicks() - sTime)/ 1000) / 60 ;
if(minutes == 3 && seconds == 0)
{
quit = true;
startTicks = 0;
timesup = true;
win = false;
dead = false;
}
std::stringstream time;
time << "Time: " << 2 - minutes << " min : "<< 59 -seconds<<" sec";
timer = TTF_RenderText_Solid( Ninja, time.str().c_str(), text );
blitSurface(60 , 5 ,timer , scroll , &timer->clip_rect);
blitSurface(0,0,scroll,screen , &scroll->clip_rect);
SDL_FreeSurface( timer );
SDL_Flip(screen);
if( getTime() < 1000 / FRAMES_PER_SECOND )
SDL_Delay( ( 1000 / FRAMES_PER_SECOND ) - getTime() );
}
if(dead == true){
SDL_FillRect( screen, &screen->clip_rect, SDL_MapRGB( screen->format, 0xFF, 0xFF, 0xFF ) );
blitSurface(0 , 0 , losingscreen , screen , &screen->clip_rect);
SDL_Flip(screen);
SDL_Delay(1000);
}
else if (win == true){
SDL_FillRect( screen, &screen->clip_rect, SDL_MapRGB( screen->format, 0xFF, 0xFF, 0xFF ) );
blitSurface(0 , 0 , winningscreen , screen , &screen->clip_rect);
SDL_Flip(screen);
SDL_Delay(1000);
}
else if (timesup == true){
SDL_FillRect( screen, &screen->clip_rect, SDL_MapRGB( screen->format, 0xFF, 0xFF, 0xFF ) );
blitSurface(0 , 0 , timeup , screen , &screen->clip_rect);
SDL_Flip(screen);
SDL_Delay(1000);
}
return true;
}
void GameEngine::startTimer(){
startTicks = SDL_GetTicks();
}
int GameEngine::getTime(){
return SDL_GetTicks()- startTicks ;
}
void GameEngine::cleanUp( )
{
SDL_FreeSurface( hero );
SDL_FreeSurface( enemy );
SDL_FreeSurface( castle );
SDL_FreeSurface( tileSheet );
SDL_FreeSurface( mainmenu );
SDL_FreeSurface( winningscreen );
SDL_FreeSurface( losingscreen );
SDL_FreeSurface( howtoplay );
SDL_FreeSurface( timeup );
for( int t = 0; t < TOTAL_TILES; t++ )
delete tiles[ t ];
delete tiles;
SDL_Quit();
}
bool GameEngine::loadFiles(){
Ninja = TTF_OpenFont("lastninja.ttf" ,30);
hero = loadImage( "hero.png" );
if( hero == NULL )
return false;
castle = loadImage("castle.png");
if(castle== NULL)
return false;
enemy = loadImage( "enemy.png" );
if( enemy == NULL )
return false;
tileSheet = loadImage( "sprite.png" );
if( tileSheet == NULL )
return false;
mainmenu = loadImage("main1.png");
if( mainmenu == NULL )
return false;
winningscreen = loadImage("win.png");
if( winningscreen == NULL )
return false;
howtoplay = loadImage("instruction.png");
if( howtoplay == NULL )
return false;
losingscreen = loadImage("lost.png");
if( losingscreen == NULL )
return false;
timeup = loadImage("timeup.png");
if( timeup == NULL )
return false;
return true;
}
SDL_Surface* GameEngine::loadImage( std::string filename )
{
SDL_Surface* loadedImg = NULL;
SDL_Surface* optimizedImg = NULL;
loadedImg = IMG_Load( filename.c_str() );
if( loadedImg != NULL )
{
optimizedImg = SDL_DisplayFormat( loadedImg );
SDL_FreeSurface( loadedImg );
if( optimizedImg != NULL )
SDL_SetColorKey( optimizedImg, SDL_SRCCOLORKEY, SDL_MapRGB( optimizedImg->format, 0xFF, 0xFF, 0xFF ) );
}
return optimizedImg;
}
bool GameEngine::setTiles(Tile *tiles[]){
int x = 0, y = 40;
ifstream map( "tile.map" );
if( map == NULL )
{
return false;
}
for( int t = 0; t < TOTAL_TILES; t++ )
{
int tileType = -1;
map >> tileType;
if( map.fail() == true )
{
map.close();
return false;
}
if( ( tileType >= 0 ) && ( tileType < TILE_SPRITES ) )
{
tiles[ t ] = new Tile( x, y, tileType , screen , &Camera , tileSheet);
}
else
{
map.close();
return false;
}
x += TILE_WIDTH;
if( x >= LEVEL_WIDTH )
{
x = 0;
y += TILE_HEIGHT;
}
}
map.close();
return true;
}
void GameEngine::blitSurface( int x, int y, SDL_Surface* source, SDL_Surface* destination, SDL_Rect* clip = NULL )
{
SDL_Rect offset;
offset.x = x;
offset.y = y;
SDL_BlitSurface( source, clip, destination, &offset );
}