BTW I USE (FIXED) ARC

code/modules/projectiles/projectile/arc.dm

@@ -9,11 +9,12 @@
 /obj/item/projectile/arc
 	name = "arcing shot"
 	icon_state = "fireball" // WIP
-	speed = 2 // Travel a bit slower, to really sell the arc visuals.
 	movement_type = UNSTOPPABLE
 	plane = ABOVE_PLANE // Since projectiles are 'in the air', they might visually overlap mobs while in flight, so the projectile needs to be above their plane.
-	var/target_distance = null	// How many tiles the impact site is.
 	var/fired_dir = null		// Which direction was the projectile fired towards. Needed to invert the projectile turning based on if facing left or right.
+	var/distance_to_fly = null // How far, in pixels, to fly for. Will call on_range() when this is passed.
+	var/visual_y_offset = -16 // Adjusts how high the projectile and its shadow start, visually. This is so the projectile and shadow align with the center of the tile.
+	var/projectile_speed_modifier = 0.5 // Slows it down to make the arcing more noticable, and improve pixel calculation accuracy.
 	var/obj/effect/projectile_shadow/shadow = null // Visual indicator for the projectile's 'true' position. Needed due to being bound to two dimensions in reality.
 
 /obj/item/projectile/arc/Bump()
@@ -27,6 +28,14 @@
 	QDEL_NULL(shadow)
 	return ..()
 
+<<<<<<< HEAD
+/obj/item/projectile/arc/Bump(atom/A, forced=0)
+	return 0
+//	if(get_turf(src) != original)
+//		return 0
+//	else
+//		return ..()
+
 // This is a test projectile in the sense that its testing the code to make sure it works,
 // as opposed to a 'can I hit this thing' projectile.
 /obj/item/projectile/arc/test/on_impact(turf/T)
@@ -80,6 +89,78 @@
 
 	// Update our shadow.
 	shadow.forceMove(loc)
+=======
+
+/obj/item/projectile/arc/proc/calculate_initial_pixel_distance(atom/user, atom/target)
+	var/datum/point/A = new(user)
+	var/datum/point/B = new(target)
+
+	// Set the pixel offsets if they exist.
+	A.x += (p_x - 16)
+	A.y += (p_y - 16)
+
+	return pixel_length_between_points(A, B)
+
+/obj/item/projectile/arc/proc/distance_flown()
+	var/datum/point/current_point = new(src)
+	var/datum/point/starting_point = new(starting)
+	return pixel_length_between_points(current_point, starting_point)
+
+/obj/item/projectile/arc/on_range()
+	if(loc)
+		on_impact(loc)
+	return ..()
+
+
+/obj/item/projectile/arc/launch_projectile(atom/target, target_zone, mob/user, params, angle_override, forced_spread = 0)
+	fired_dir = get_dir(user, target) // Used to determine if the projectile should turn in the air.
+	distance_to_fly = calculate_initial_pixel_distance(user, target) // Calculates how many pixels to travel before hitting the ground.
+	..() // Does the actual launching. The projectile will be out after this.
+
+// For legacy.
+/obj/item/projectile/arc/old_style_target(atom/target, atom/source)
+	..()
+	fired_dir = get_dir(source, target)
+	distance_to_fly = calculate_initial_pixel_distance(source, target)
+
+
+/obj/item/projectile/arc/fire(angle, atom/direct_target)
+	..() // The trajectory must exist for set_pixel_speed() to work.
+	set_pixel_speed(projectile_speed_modifier) // Slows it down and makes the distance checking more accurate.
+
+/obj/item/projectile/arc/pixel_move(trajectory_multiplier, hitscanning = FALSE)
+	// Do the other important stuff first.
+	..(trajectory_multiplier, hitscanning)
+
+	// Test to see if its time to 'hit the ground'.
+	var/pixels_flown = distance_flown()
+
+	if(pixels_flown >= distance_to_fly)
+		on_range() // This will also cause the projectile to be deleted.
+
+	else
+		// Handle visual projectile turning in flight.
+		var/arc_progress = between(0, pixels_flown / distance_to_fly, 1)
+		var/new_visual_degree = LERP(45, 135, arc_progress)
+
+		if(fired_dir & EAST)
+			adjust_rotation(new_visual_degree)
+		else if(fired_dir & WEST)
+			adjust_rotation(-new_visual_degree)
+
+		// Now for the fake height.
+		var/arc_max_pixel_height = distance_to_fly / 2
+		var/sine_position = arc_progress * 180
+		var/pixel_z_position = (arc_max_pixel_height * sin(sine_position)) + visual_y_offset
+		animate(src, pixel_z = pixel_z_position, time = 1, flags = ANIMATION_END_NOW)
+
+		// Update our shadow.
+		if(shadow)
+			shadow.forceMove(loc)
+			shadow.pixel_x = pixel_x
+			shadow.pixel_y = pixel_y + visual_y_offset
+
+>>>>>>> f083fba... Merge pull request #5977 from Neerti/btw_i_use_fixed_arc
 
 /obj/effect/projectile_shadow
 	name = "shadow"
@@ -87,11 +168,18 @@
 	icon = 'icons/obj/projectiles.dmi'
 	icon_state = "arc_shadow"
 	anchored = TRUE
+	animate_movement = 0 // Just like the projectile it's following.
 
 //////////////
 //	Subtypes
 //////////////
 
+// This is a test projectile in the sense that its testing the code to make sure it works,
+// as opposed to a 'can I hit this thing' projectile.
+/obj/item/projectile/arc/test/on_impact(turf/T)
+	new /obj/effect/explosion(T)
+	T.color = "#FF0000"
+
 // Generic, Hivebot related
 /obj/item/projectile/arc/blue_energy
 	name = "energy missile"
@@ -99,6 +187,10 @@
 	damage = 15
 	damage_type = BURN
 
+/obj/item/projectile/arc/blue_energy/on_impact(turf/T)
+	for(var/mob/living/L in T)
+		attack_mob(L) // Everything on the turf it lands gets hit.
+
 // Fragmentation arc shot
 /obj/item/projectile/arc/fragmentation
 	name = "fragmentation shot"
@@ -125,11 +217,9 @@
 
 /obj/item/projectile/arc/emp_blast/on_impact(turf/T)
 	empulse(T, 2, 4, 7, 10) // Normal EMP grenade.
-	return ..()
 
 /obj/item/projectile/arc/emp_blast/weak/on_impact(turf/T)
 	empulse(T, 1, 2, 3, 4) // Sec EMP grenade.
-	return ..()
 
 // Radiation arc shot
 /obj/item/projectile/arc/radioactive
@@ -139,4 +229,4 @@
 	var/rad_power = 50
 
 /obj/item/projectile/arc/radioactive/on_impact(turf/T)
-	radiation_repository.radiate(T, rad_power)
+	radiation_repository.radiate(T, rad_power)