Hi! I'm trying to implement collision for my 2d platformer game.I understand basic meanings of how to detect it. I don't know how to implement it correctly though.
That's how I render my map :
void MapScreen::Draw(SDL_Renderer*renderer)
{
for (int y = 0; y <= map.size(); ++y)
{
for (int x = 0; x < map[y].size(); ++x)
{
if(map[y][x] != 0)
{
SDL_Rect DestRect = {x * 64, y * 64, 64, 64 };
SDL_Rect sourceRect = {map[y][x] * 64, 0, 64, 64 };
tileSet[0]->Draw(renderer, sourceRect, DestRect);
}
}
}
}And that's how I would like to detect a collision. GetBlockID returns where on a map the block is set.
Getter::getFM() returns instance for fileManager class ->getH() returns window height value.
Int x, int y, int hitboxX, int hitboxX - these are player coordinates and width and height of the sprite.
Vector2* GameplayScreen::getBlockID(int x, int y)
{
return new Vector2(x < 0 ? 0 : x / 64, y > Getter::getFM()->getH() ? 0 : (y + 64) / 64);
}
bool GameplayScreen::checkCollision(Vector2* v2)
{
}
bool GameplayScreen::checkCollisionRB(int x, int y, int hitBoxX, int hitBoxY)
{
return checkCollision(getBlockID(x + hitBoxX, y + hitBoxY));
}
bool GameplayScreen::checkCollisionLB(int x, int y, int hitBoxY)
{
return checkCollision(getBlockID(x, y + hitBoxY));
}
bool GameplayScreen::checkCollisionRT(int x, int y, int hitBoxX)
{
return checkCollision(getBlockID(x + hitBoxX, y));
}
bool GameplayScreen::checkCollisionLT(int x, int y)
{
return checkCollision(getBlockID(x, y));
}
bool GameplayScreen::checkCollisionRC(int x, int y,int hitBoxX, int hitBoxY)
{
return checkCollision(getBlockID(x + hitBoxX, y + hitBoxY));
}
bool GameplayScreen::checkCollisionLC(int x, int y,int hitBoxY)
{
return checkCollision(getBlockID(x, y + hitBoxY));
}
In player class movement method, I want to say : "if not collision you can move, if there is, you can't". Like :
if(!Getter::getMap()->checkCollisionLC){
movement things
}
