Snap

Westwood implemented a multi-stage target snap system through three key functions that control projectile coordinate correction: In-Flight Snap optimizes ballistic trajectory in real-time, Pre-Explosion Distance Correction performs close-range position calibration, and Pre-Explosion State Correction makes final adaptations based on target state; each stage's activation is strictly constrained by projectile properties (Airburst/Inaccurate/EMEffect), target characteristics, and dynamic parameters, with specific behavioral differences detailed below:

Phase Function	Activation Conditions	Additional Requirements		Final Effect
In-Flight Snap	Airburst=no && Inaccurate=no	Projectile is about to detonate OR velocity>=128 OR velocity * 2 > distance to target		Snaps the projectile to the target's location
Pre-Explosion Distance Correction	Airburst=no && Inaccurate=no	Distance between projectile and target < 32 leptons		Corrects explosion coordinates to target's current location
Pre-Explosion State Correction	Airburst=no && EMEffect=no	Distance between projectile and target < 42 leptons (with compensation for buildings as in footnote)	Non-Building Targets	Alive	Target entity center
				Dying (in death sequence)	Follows death animation position
				Dead	Corpse position
			Building Targets	Alive	Target entity center
				Destroyed	Center of rubble

Examples

EMEffect=yes, others=no:

• In-flight snap still works (does not depend on EMEffect)
• Explosion coordinates are corrected at close range (<32 leptons)
• State correction is skipped

Airburst=yes, others=no:

• All snap functions are disabled
• Projectile follows air burst logic

Inaccurate=yes, others=no:

• In-flight and close-range snap are disabled
• State correction (including building rubble) still works

Bugs/Side-Effects/Unexpected Limitations

For projectiles with Inviso=yes, these condition checks are redundant and can introduce accuracy issues when conditions are not met.

• This bug has been fixed in Phobos Build#30.

See Also

• Ranged
• Vertical