sfml collision with textures

[coolian]

so my problem is i have a tilemap which loades the textures from a tile set and i have a player which starts at the corner the player can be moved with wasd and shoot with the left mouse button now if i move the player i can move into walls and i dont want that but if i make the whole tilemap collidable it wont work because only some tiles are walls but since the tilemap is one sprite i cant do anything different so how can i implement collision my source code:https://pastebin.com/MzLFZBfK btw the tilemap and loading the textures and all that works fine i just need collision

[badlukk]

Before your player moves, you need to check which tile they will move to and see if it's a wall, and then only move them if it isn't.