TileCollisionLayer

Create a tile layer object

The tile collision grid

Solid layers block objects and particles, the solidOnly tests skip the others

The tiles set one way, by tile index, and the way each can be passed through, see setOneWay

In the light system's shadow pass, cast only from the cells with collision, drawn as the layer shows them, so a floor in the same layer stays lit; false casts every tile

Clear tile collision data for a given cell in the layer

Return the exact position of the boundary of first tile hit, undefined if nothing was hit. The point will be inside the colliding tile if it hits (may have a tiny shift)

Check if collision with another object should occur

Destroy this tile layer

Get tile collision data for a given cell in the layer

Clear and initialize tile collision, the size is the layer's own, the tile data and canvas keep it

Draw this layer's shadow shape: the cells with collision in the part the shadow map covers, each row of them in one draw from that part of the layer's texture, so see through pixels in a tile cast nothing; every tile when shadowSolidOnly is off, or when the layer is turned or mirrored

Set tile collision data for a given cell in the layer

Make the cells that draw a tile one way, like a platform jumped up through and landed on: an object, a particle or a ray passes through moving that way, and the tile blocks only what was wholly on its far side before it moved, the side it is passed toward; turned and mirrored as each cell's tile is, so a platform turned a quarter is one way to the side

• A moving object is not stopped or asked through collideWithTile until the tile would block it, so a collideWithTile that returns false lets it drop through
• tileCollisionTest with an object goes by the object's pos, a raycast by its start, and a test with no object or with a callback finds every one way tile solid