[MIRROR] Many bug fixes, QoL, and PDA notes port (now with sensible diffs) (#7588)

Co-authored-by: Heroman3003 <31296024+Heroman3003@users.noreply.github.com>
Co-authored-by: Nadyr <41974248+Darlantanis@users.noreply.github.com>
Co-authored-by: Nadyr <forlirnglacignis@gmail.com>

code/modules/power/singularity/particle_accelerator/particle.dm

@@ -7,6 +7,7 @@
 	icon_state = "particle1"//Need a new icon for this
 	anchored = TRUE
 	density = TRUE
+	movement_type = UNSTOPPABLE // for bumps to trigger
 	var/movement_range = 10
 	var/energy = 10		//energy in eV
 	var/mega_energy = 0	//energy in MeV

code/modules/power/singularity/particle_accelerator/particle_emitter.dm

@@ -31,7 +31,7 @@
 	if((last_shot + fire_delay) <= world.time)
 		last_shot = world.time
 		var/obj/effect/accelerated_particle/A = null
-		var/turf/T = get_step(src,dir)
+		var/turf/T = src.loc // if it doesn't spawn here, it won't bump stuff directly infront of the PA
 		switch(strength)
 			if(0)
 				A = new/obj/effect/accelerated_particle/weak(T, dir)