C4 Explosion is compose of 3 elements. A static mesh to be use as a game prop. Particle System for the effect. and lastly a destructible wall. This is all done through Unreal Blueprints.
First element the c4 mesh blueprints.
This is made up of a timer, attach to a parameter collection to animated the blinking lights. then when the countdown is done, it spawns the particle system, and destroys the mesh. It uses a cube placeholder to obtain world locations.
This is the breakdown of the c4 particle system.
Last Element is the Destructible Mesh blueprints, theirs 2 ways to do this. Connect it to the particle system to deal damage to the wall. Or Use a timer to time the explosion where it occurs, but for cinematics, this method is more reliable. where you time when the particle system initial blast happens, and apply damage. added a add vector to control the direction of the hit.