Isometric Collision and Hitbox Shapes (Team 3)

[E-Roderick]

Description

Task: Isometric Collision and Boundary Boxes

Sprint 3

Fixing of the orthogonal grid collision and boundary boxes. This is post-completion documentation of the task.

At sprint start, collision and boundary boxes were based on the orthogonal grid, rather than isometric. The first step to temporarily resolve was rotation of these square boxes, however this implementation had misaligned overlap (as the pieces were placed on an isometric grid).

The next iteration involved using tangent and the isometric angles to calculate vector points for an isometric grid. This was misaligned by just a few pixels around corners.

Finally, as the game engine emulates an isometric view using a 1:2 ratio, this was used to calculate near perfect isometric vector positions.

Sprint 4

After the finish of Sprint 3, the usage of the borders was extended to situations that were not originally planned for, particularly regarding entities with hitboxes that should be non-square. To account for this, the collider shape system will need another rework to allow for rectangular isometric shapes. This will be done by specifying the shape through the lengths of each side. Additionally, to allow for more precise hitbox placement in unorthodox entities, some form of offset method will also be added.

As work thus far has only focused on collider components, equivalents will likely be needed for the hitbox components too.

Dependencies

None.

Milestones

• Get isometric vector points
• Implement isometric boxes
• Proper implementation of isometric collision and hitbox bounds (centred)
• Allow for generic isometric shapes
• Add better usage for the isometric shape collider methods
• Add equivalent methods for hitboxes
• Code documentation
• Wiki documentation
• Functional testing

Documentation

• Isometric Collisions and Hitboxes
• Hitbox Testing

Members

• @E-Roderick

[E-Roderick]

@s4594749 I think this was commented on the wrong ticket

[s4594749]

ohhhh shit

[s4594749]

@s4594749 I think this was commented on the wrong ticket

sorry dude

[wenqi6]

I created the UML diagrams about animations for our group. If you have any questions, you can ask me.

[E-Roderick]

Likely best practice update: This task has been carried over into Sprint 4