[4ian]

Needs GDevelop 5.6.286. Don't merge before it is released.

Tank (starting-3d-tank, starting-expanded-3d-tank):

• The tank (a custom object containing the tank top, a custom object containing the cannon) now gives the end of its cannon, MuzzleX/Y/Z(), and the direction it points at, AimDirectionX/Y/Z(). They are computed with the new ToParentX/Y/Z and ToParentDirectionX/Y/Z at each level.
• The shell starts at the muzzle and is turned and pushed along the cannon. Before, this was approximated from the turret rotation, the cannon angle and the tank tilt, and was off whenever the tank was on a slope. A raised cannon now fires higher than before: the old impulse halved the cannon's elevation.
• The blast radius and its push are measured in 3D: a shell exploding high up no longer blows away the targets below it.
• CannonWidth, CannonInfo and their extension variable are removed.

Haunted house (starting-expanded-3d-house-horror): the key and the front door use "Distance between two objects (3D)" instead of the 2D distance followed by a comparison of the objects' Z. They can only be reached from their own floor, from as far as before.

GTA (starting-3d-grand-theft-auto, starting-expanded-3d-grand-theft-auto): getting into a car uses the 3D distance. The player no longer gets into a car parked above them. On the same ground, the reach is 94 px instead of 98 px, because a car's center is 29 px higher than the player's feet.

The other 3D starters keep the 2D distance on purpose: it's the radius in which an enemy hears the player, or a distance on the ground.

Minimum version: the examples' gdevelopVersion is now also computed from the new 3D conditions and expressions (Distance3D, IsTurnedTowardObject3D, the 3D distances, the conversions of custom objects). These five starters need >=5.6.286, so older editors ask for an update. When several features are used, the most recent version wins.

Tested with the starters' gameplay tests and extra tests:

• the tank's muzzle and aim direction against the cannon drawn by the renderer, with the tank tilted;
• the key and the door from each floor of the house;
• getting into a car from the street, but not into the one parked above it.

🤖 Generated with Claude Code

https://claude.ai/code/session_01Tk9so3zqwFutR1h9SJnQQS

[github-actions]

Preview the game(s) changed or added in this Pull Request

• https://editor.gdevelop.io?project=https://raw.githubusercontent.com/GDevelopApp/GDevelop-examples/claude/fervent-euler-v7iva7/examples/starting-3d-grand-theft-auto/starting-3d-grand-theft-auto.json
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• https://editor.gdevelop.io?project=https://raw.githubusercontent.com/GDevelopApp/GDevelop-examples/claude/fervent-euler-v7iva7/examples/starting-expanded-3d-house-horror/starting-expanded-3d-house-horror.json
• https://editor.gdevelop.io?project=https://raw.githubusercontent.com/GDevelopApp/GDevelop-examples/claude/fervent-euler-v7iva7/examples/starting-expanded-3d-tank/starting-expanded-3d-tank.json

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