Now let's implement platform blocks that you can jump through from below but land on from above.

Platform vs Collision Blocks

Regular collision blocks stop movement from all directions. Platform blocks should:

• Allow jumping through — No collision when moving upward

• Support landing — Collision when falling from above

Creating Platform Blocks

In Tiled, create a separate object layer for platforms. Export these separately from collision blocks.

Platform Collision Logic

Only check for collisions when the player is falling:

if (player.velocity.y > 0) {   // Check platform collisions   if (player.hitbox.position.y + player.hitbox.height <= platform.position.y) {     // Player is above platform and falling     player.velocity.y = 0     player.position.y = platform.position.y - player.height   } }

The key is checking if the player was above the platform in the previous frame — this prevents collisions when jumping up through them.

With platform blocks working, you can now create more interesting vertical level designs.