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Collision detection in my simple 2d Tilebased game

Started by Nyocia May 10, 2006 at 8:52 AM 2 replies 950+ views

Original Post

May 10, 2006 at 8:52 AM

Hello ! this is how i check if we may have a collision around in the world: // TESTING , COLLISION UNDER SPECIAL CIRCUMSTANCES ****->Johan int tx1 = DC->m_SidePlayer.m_iXpos / TILE_SIZE; int ty1 = DC->m_SidePlayer.m_iYpos / TILE_SIZE; int tx2 = DC->m_SidePlayer.m_iXpos+32 / TILE_SIZE; int ty2 = DC->m_SidePlayer.m_iYpos+32 / TILE_SIZE; for( int y = ty1; y < ty2; y++ ) for( int x = tx1; y < tx2; y++ ) { if( DC->m_Tilemap_Side.m_map[x + y * SIDEWORLDWIDTH].m_iFlags == 'a') { HDC hdc = DC->m_dDraw->getBackbufferDC(); TextOut(hdc,0,200,"HEJ",strlen("HEJ")); DC->m_dDraw->releaseBackbufferDC(hdc); } } Unfortually it doesnt work :( can anyone see anything wrong here ?

password

May 10, 2006 at 10:24 AM

I'm not that good at windows programming, but what about these lines?

for( int y = ty1; y < ty2; y++ )
for( int x = tx1; y < tx2; y++ )
{

if( DC->m_Tilemap_Side.m_map[x + y * SIDEWORLDWIDTH].m_iFlags == 'a')
{
HDC hdc = DC->m_dDraw->getBackbufferDC();
TextOut(hdc,0,200,"HEJ",strlen("HEJ"));
DC->m_dDraw->releaseBackbufferDC(hdc);
}

}

the first loop does have more than one line of code but still no { }.

ronkfist

May 10, 2006 at 10:57 AM

Well this might not solve it, but its prolly part of the problem...

for( int y = ty1; y < ty2; y++ )
for( int x = tx1; y < tx2; y++ ) <<<--- x++, not y++

Undeadlnsanity

May 10, 2006 at 11:02 AM

Try using this:

for( int y = ty1; y < ty2; y++ ) {     for( int x = tx1; x < tx2; x++ ) {                    if( DC->m_Tilemap_Side.m_map[x + y * SIDEWORLDWIDTH].m_iFlags == 'a') {              HDC hdc = DC->m_dDraw->getBackbufferDC();              TextOut(hdc, 0, 200, "HEJ", strlen("HEJ"));              DC->m_dDraw->releaseBackbufferDC(hdc);          }         }}

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