Now that we have our level’s tiles in place we need to set up a
collision layer. This tells Impact what tiles are passable and impassable
to the game’s entities. To set this up, we need to create a new layer
collision and set the Tilesize
to 16. Now, you can select
Layer from the layer options, and a default set of collision
tiles will automatically be loaded for you. Once you have the collision
layer in place, let’s start painting.
As seen in Figure 4-8, there are a lot of different collision tiles for us to choose from. Most of these tiles help support collisions with slopes. We are going to focus on the first solid tile, which is the pink square in the upper-left corner. Let’s paint on top of our main level’s walls.
Usually, I put the collision layer underneath the main layer. You can reorder layers at any time by simply dragging them around. Now, when we create our player and monsters, Impact will make sure they don’t fall through the floor.
It looks like we are finally ready to start building our game!