Moving missile with partial homing

[kingkwong92]

I'm having trouble making my missile have partial homing. My missile is a unit with 1 move speed and 3.0 turn rate. It has a global acquisition range. When cast it turns towards the nearest enemy target. I want to change the direction of the of the missile towards the direction of the facing angle of the missile. I don't want it to turn if the angle is greater than 90 degrees from its original path (easier it current path). However I cannot get the conditions right. Please help, this is the main part that I need help with:

((Facing of (Picked unit)) + missile_angle) Less than or equal to 90.00
((Facing of (Picked unit)) + missile_angle) Greater than or equal to 270.00

Also is it possible to detect which unit is targeted by the missile. If possible, I would like to add:
if distance between user and missile is greater than distance between user and target.
This prevents the missile homing on the target if it has already passed it.
Thanks

• Movement
  • Events
    • Time - Every 0.01 seconds of game time
  • Conditions
  • Actions
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • (Number of units in missile_group) Greater than 0
      • Then - Actions
        • Unit Group - Pick every unit in missile_group and do (Actions)
          • Loop - Actions
            • Set Player_Number = (Player number of (Owner of (Picked unit)))
            • Set missile = (Picked unit)
            • Set player_number = (Player number of (Owner of (Picked unit)))
            • Set missile_handle = (Picked unit)
            • Set missile_speed = (Load 1 of (Key missile_handle) from missile_hash)
            • Set missile_range = (Load 2 of (Key missile_handle) from missile_hash)
            • Set missile_damage = (Load 3 of (Key missile_handle) from missile_hash)
            • Set missile_hits = (Load 4 of (Key missile_handle) from missile_hash)
            • Set missile_user = (Load 5 of (Key missile_handle) in missile_hash)
            • Set missile_distance = (Load 6 of (Key missile_handle) from missile_hash)
            • Set missile_angle = (Load 7 of (Key missile_handle) from missile_hash)
            • Set missile_point_1 = (Position of missile)
            • Set missile_point_2 = (missile_point_1 offset by missile_speed towards missile_angle degrees)
            • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
              • If - Conditions
                • (Terrain pathing at missile_point_2 of type Flyability is off) Equal to True
              • Then - Actions
                • Custom script: call RemoveLocation(udg_missile_point_2)
                • Set missile_point_2 = missile_point_1
              • Else - Actions
            • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
              • If - Conditions
                • missile_hits Greater than 0
                • missile_distance Greater than 0.00
              • Then - Actions
                • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                  • If - Conditions
                    • (Unit-type of missile) Equal to Shuriken
                  • Then - Actions
                    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                      • If - Conditions
                        • missile_distance Less than or equal to 1700.00
                        • missile_distance Greater than or equal to 500.00
                        • ((Facing of (Picked unit)) + missile_angle) Less than or equal to 90.00
                        • ((Facing of (Picked unit)) + missile_angle) Greater than or equal to 270.00
                      • Then - Actions
                        • Game - Display to (All players) for 0.10 seconds the text: Turn
                        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                          • If - Conditions
                            • ((Facing of (Picked unit)) - missile_angle) Greater than or equal to 270.00
                          • Then - Actions
                            • Set missile_angle = (missile_angle - 1.00)
                          • Else - Actions
                            • Set missile_angle = (missile_angle + 1.00)
                      • Else - Actions
                    • Hashtable - Save missile_angle as 7 of (Key missile_handle) in missile_hash
                    • Custom script: call DestroyGroup(udg_missile_target_group)
                    • Set missile_target_group = (Units within missile_range of missile_point_2 matching (((Matching unit) Not equal to missile_user) and (((Matching unit) is alive) Equal to True)))
                    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                      • If - Conditions
                        • (Number of units in missile_target_group) Greater than 0
                      • Then - Actions
                        • Set missile_target = (Random unit from missile_target_group)
                        • Unit - Cause Hero[player_number] to damage missile_target, dealing missile_damage damage of attack type Pierce and damage type Normal
                        • Set Temp_Loc_1 = (Position of missile_target)
                        • Unit - Create 1 Dummy for (Player(Player_Number)) at missile_point_1 facing missile_point_2
                        • Unit - Add a 1.00 second Generic expiration timer to (Last created unit)
                        • Unit - Add Stun (dummy) to (Last created unit)
                        • Unit - Set level of Stun (dummy) for (Last created unit) to 1
                        • Unit - Order (Last created unit) to Human Mountain King - Storm Bolt missile_target
                        • Set missile_hits = (missile_hits - 1)
                        • Hashtable - Save missile_hits as 4 of (Key missile_handle) in missile_hash
                      • Else - Actions
                        • Set X = (X of missile_point_2)
                        • Set Y = (Y of missile_point_2)
                        • Set missile_distance = (missile_distance - missile_speed)
                        • Hashtable - Save missile_distance as 6 of (Key missile_handle) in missile_hash
                        • Custom script: call SetUnitX(udg_missile,udg_X)
                        • Custom script: call SetUnitY(udg_missile,udg_Y)
                  • Else - Actions
              • Else - Actions
            • Custom script: call RemoveLocation(udg_missile_point_1)
            • Custom script: call RemoveLocation(udg_missile_point_2)
      • Else - Actions
        • Trigger - Turn off (This trigger)

 

[Slapshot136]

Also is it possible to detect which unit is targeted by the missile.

is this missile fired at a unit? or does it go for the "closest" enemy unit that is ahead of it? can the targeted unit switch?

 

[kingkwong92]

The fired unit is a sliding unit
It has a global acquisition range and therefore will target thee closest unit.
I plan on adding in a stop command so it will constantly refresh the closest target enemy.
I found that the problem lies with the angles in the condition.
The change from 359.999 degrees to 0 degrees.
E.g degrees (300 + 90) = 30 degrees
real (300 + 90) = 390
So far I did this but it still doesnt work
Set X = (missile_angle + 90.00) Set Y = (missile_angle - 90.00) If (X Greater than or equal to 360.00) then do (Set X = (X - 360.00)) else do (Do nothing) If (Y Less than or equal to 0.00) then do (Set Y = (Y + 360.00)) else do (Do nothing) If (All Conditions are True) then do (Then Actions) else do (Else Actions) If - (Facing of (Picked unit)) Less than or equal to X (Facing of (Picked unit)) Greater than or equal to Y

 

[Slapshot136]

use the wc3 code tags to make it readable please..

 

[kingkwong92]

• Movement
  • Events
    • Time - Every 0.01 seconds of game time
  • Conditions
  • Actions
    • Set X = (missile_angle + 90.00)
    • Set Y = (missile_angle - 90.00)
    • If (X Greater than or equal to 360.00) then do (Set X = (X - 360.00)) else do (Do nothing)
    • If (Y Less than or equal to 0.00) then do (Set Y = (Y + 360.00)) else do (Do nothing)
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • missile_distance Less than or equal to 1700.00
        • missile_distance Greater than or equal to 500.00
        • (Facing of (Picked unit)) Less than or equal to X
        • (Facing of (Picked unit)) Greater than or equal to Y
      • Then - Actions
        • If (All Conditions are True) then do (Then Actions) else do (Else)

 

[Slapshot136]

• (Facing of (Picked unit)) Less than or equal to X
  • (Facing of (Picked unit)) Greater than or equal to Y

there is no picked unit here - and I don't quite understand your X/Y setup - where is the target? why not just adjust the current angle towards the target? what do you expect the missile to do if there is no target, go straight?

 

[kingkwong92]

Thats not the whole trigger. I have a picked unit.
I want to adjust the current angle towards the target however I can't seem to get the conditions right. If there is no target then it will continue going straight
Here is the full trigger. Its really big tho.

• Movement
  • Events
    • Time - Every 0.01 seconds of game time
  • Conditions
  • Actions
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • (Number of units in missile_group) Greater than 0
      • Then - Actions
        • Unit Group - Pick every unit in missile_group and do (Actions)
          • Loop - Actions
            • Set Player_Number = (Player number of (Owner of (Picked unit)))
            • Set missile = (Picked unit)
            • Set player_number = (Player number of (Owner of (Picked unit)))
            • Set missile_handle = (Picked unit)
            • Set missile_speed = (Load 1 of (Key missile_handle) from missile_hash)
            • Set missile_range = (Load 2 of (Key missile_handle) from missile_hash)
            • Set missile_damage = (Load 3 of (Key missile_handle) from missile_hash)
            • Set missile_hits = (Load 4 of (Key missile_handle) from missile_hash)
            • Set missile_user = (Load 5 of (Key missile_handle) in missile_hash)
            • Set missile_distance = (Load 6 of (Key missile_handle) from missile_hash)
            • Set missile_angle = (Load 7 of (Key missile_handle) from missile_hash)
            • Set missile_point_1 = (Position of missile)
            • Set missile_point_2 = (missile_point_1 offset by missile_speed towards missile_angle degrees)
            • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
              • If - Conditions
                • (Terrain pathing at missile_point_2 of type Flyability is off) Equal to True
              • Then - Actions
                • Custom script: call RemoveLocation(udg_missile_point_2)
                • Set missile_point_2 = missile_point_1
              • Else - Actions
            • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
              • If - Conditions
                • missile_hits Greater than 0
                • missile_distance Greater than 0.00
              • Then - Actions
                • -------- Different Missiles --------
                • -------- Shuriken --------
                • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                  • If - Conditions
                    • (Unit-type of missile) Equal to Shuriken
                  • Then - Actions
                    • Custom script: call DestroyGroup(udg_missile_deflect_group)
                    • Set X = (missile_angle + 90.00)
                    • Set Y = (missile_angle - 90.00)
                    • If (X Greater than or equal to 360.00) then do (Set X = (X - 360.00)) else do (Do nothing)
                    • If (Y Less than or equal to 0.00) then do (Set Y = (Y + 360.00)) else do (Do nothing)
                    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                      • If - Conditions
                        • missile_distance Less than or equal to 1700.00
                        • missile_distance Greater than or equal to 500.00
                        • (Facing of (Picked unit)) Less than or equal to X
                        • (Facing of (Picked unit)) Greater than or equal to Y
                      • Then - Actions
                        • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                          • If - Conditions
                            • ((Facing of (Picked unit)) - missile_angle) Greater than or equal to 270.00
                          • Then - Actions
                            • Set missile_angle = (missile_angle - 1.00)
                          • Else - Actions
                            • Set missile_angle = (missile_angle + 1.00)
                      • Else - Actions
                        • Game - Display to (All players) for 0.10 seconds the text: Turn
                    • Hashtable - Save missile_angle as 7 of (Key missile_handle) in missile_hash
                    • Custom script: call DestroyGroup(udg_missile_target_group)
                    • Set missile_target_group = (Units within missile_range of missile_point_2 matching (((Matching unit) Not equal to missile_user) and (((Matching unit) is alive) Equal to True)))
                    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                      • If - Conditions
                        • (Number of units in missile_target_group) Greater than 0
                      • Then - Actions
                        • Set missile_target = (Random unit from missile_target_group)
                        • Unit - Cause Hero[player_number] to damage missile_target, dealing missile_damage damage of attack type Pierce and damage type Normal
                        • Set Temp_Loc_1 = (Position of missile_target)
                        • Unit - Create 1 Dummy for (Player(Player_Number)) at missile_point_1 facing missile_point_2
                        • Unit - Add a 1.00 second Generic expiration timer to (Last created unit)
                        • Unit - Add Stun (dummy) to (Last created unit)
                        • Unit - Set level of Stun (dummy) for (Last created unit) to 1
                        • Unit - Order (Last created unit) to Human Mountain King - Storm Bolt missile_target
                        • Set missile_hits = (missile_hits - 1)
                        • Hashtable - Save missile_hits as 4 of (Key missile_handle) in missile_hash
                      • Else - Actions
                        • Set X = (X of missile_point_2)
                        • Set Y = (Y of missile_point_2)
                        • Set missile_distance = (missile_distance - missile_speed)
                        • Hashtable - Save missile_distance as 6 of (Key missile_handle) in missile_hash
                        • Custom script: call SetUnitX(udg_missile,udg_X)
                        • Custom script: call SetUnitY(udg_missile,udg_Y)
                  • Else - Actions
                • -------- Grand Fireball --------
                • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                  • If - Conditions
                    • (Unit-type of missile) Equal to Grand Fireball
                  • Then - Actions
                    • Custom script: call DestroyGroup(udg_missile_target_group)
                    • Set missile_target_group = (Units within missile_range of missile_point_2 matching (((Matching unit) Not equal to missile_user) and (((Matching unit) is alive) Equal to True)))
                    • Set Temp_Loc_1 = (Position of missile)
                    • Special Effect - Create a special effect at Temp_Loc_1 using Objects\Spawnmodels\Other\NeutralBuildingExplosion\NeutralBuildingExplosion.mdl
                    • Special Effect - Destroy (Last created special effect)
                    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                      • If - Conditions
                        • (Number of units in missile_target_group) Greater than 0
                      • Then - Actions
                        • Unit Group - Pick every unit in missile_target_group and do (Actions)
                          • Loop - Actions
                            • Set Temp_Loc_2 = (Position of (Picked unit))
                            • Unit - Cause Hero[player_number] to damage (Picked unit), dealing missile_damage damage of attack type Spells and damage type Normal
                            • Unit - Create 1 Dummy for (Player(Player_Number)) at Temp_Loc_1 facing Temp_Loc_2
                            • Unit - Add a 1.00 second Generic expiration timer to (Last created unit)
                            • Unit - Add Stun (dummy) to (Last created unit)
                            • Unit - Set level of Stun (dummy) for (Last created unit) to 3
                            • Unit - Order (Last created unit) to Human Mountain King - Storm Bolt (Picked unit)
                            • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                              • If - Conditions
                                • ((Picked unit) is An Ancient) Equal to False
                              • Then - Actions
                                • Set Temp_Loc_3 = (Temp_Loc_2 offset by 25.00 towards (Angle from Temp_Loc_1 to Temp_Loc_2) degrees)
                                • Unit - Move (Picked unit) instantly to Temp_Loc_3
                                • Custom script: call RemoveLocation(udg_Temp_Loc_3)
                              • Else - Actions
                            • Custom script: call RemoveLocation(udg_Temp_Loc_2)
                        • Set missile_hits = (missile_hits - (Number of units in missile_target_group))
                        • Set missile_distance = (missile_distance - missile_speed)
                        • Hashtable - Save missile_distance as 6 of (Key missile_handle) in missile_hash
                        • Hashtable - Save missile_hits as 4 of (Key missile_handle) in missile_hash
                      • Else - Actions
                        • Set X = (X of missile_point_2)
                        • Set Y = (Y of missile_point_2)
                        • Set missile_distance = (missile_distance - missile_speed)
                        • Hashtable - Save missile_distance as 6 of (Key missile_handle) in (Last created hashtable)
                        • Custom script: call SetUnitX(udg_missile,udg_X)
                        • Custom script: call SetUnitY(udg_missile,udg_Y)
                    • Custom script: call RemoveLocation(udg_Temp_Loc_1)
                  • Else - Actions
                • -------- Phoenix Fire --------
                • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                  • If - Conditions
                    • (Unit-type of missile) Equal to Fireball
                  • Then - Actions
                    • Custom script: call DestroyGroup(udg_missile_target_group)
                    • Set missile_target_group = (Units within missile_range of missile_point_2 matching (((Matching unit) Not equal to missile_user) and (((Matching unit) is alive) Equal to True)))
                    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                      • If - Conditions
                        • (Number of units in missile_target_group) Greater than 0
                      • Then - Actions
                        • Set missile_target = (Random unit from missile_target_group)
                        • Unit - Cause Hero[player_number] to damage missile_target, dealing missile_damage damage of attack type Pierce and damage type Normal
                        • Set Temp_Loc_1 = (Position of missile_target)
                        • Unit - Create 1 Dummy for (Player(Player_Number)) at missile_point_1 facing missile_point_2
                        • Unit - Add a 1.00 second Generic expiration timer to (Last created unit)
                        • Unit - Add Stun (dummy) to (Last created unit)
                        • Unit - Set level of Stun (dummy) for (Last created unit) to 4
                        • Unit - Order (Last created unit) to Human Mountain King - Storm Bolt missile_target
                        • Set missile_hits = (missile_hits - 1)
                        • Hashtable - Save missile_hits as 4 of (Key missile_handle) in missile_hash
                        • Special Effect - Create a special effect attached to the origin of (Picked unit) using Abilities\Spells\Other\Doom\DoomDeath.mdl
                        • Special Effect - Destroy (Last created special effect)
                      • Else - Actions
                        • Set X = (X of missile_point_2)
                        • Set Y = (Y of missile_point_2)
                        • Set missile_distance = (missile_distance - missile_speed)
                        • Hashtable - Save missile_distance as 6 of (Key missile_handle) in missile_hash
                        • Custom script: call SetUnitX(udg_missile,udg_X)
                        • Custom script: call SetUnitY(udg_missile,udg_Y)
                  • Else - Actions
              • Else - Actions
                • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                  • If - Conditions
                    • Or - Any (Conditions) are true
                      • Conditions
                        • (Unit-type of missile) Equal to Fireball
                        • (Unit-type of missile) Equal to Grand Fireball
                        • (Unit-type of missile) Equal to Shuriken
                        • (Unit-type of missile) Equal to Kunai
                  • Then - Actions
                    • Unit Group - Remove missile from missile_group
                    • Unit - Remove missile from the game
                    • Hashtable - Clear all child hashtables of child (Key missile_handle) in missile_hash
                  • Else - Actions
                    • Unit Group - Remove missile from missile_group
            • Custom script: call RemoveLocation(udg_missile_point_1)
            • Custom script: call RemoveLocation(udg_missile_point_2)
      • Else - Actions
        • Trigger - Turn off (This trigger)

 

[Slapshot136]

I want to adjust the current angle towards the target however I can't seem to get the conditions right. If there is no target then it will continue going straight

how about making your missile face the "Math - angle between points" between your missile and your target (or compare that to your missile's current angle, and adjust it by 1% each iteration)