#Mix base movement and aim offset how to#

_ P_P is a location where projectile will be created, _ V_P - it's speed and g - gravity vector ((0, 0, -980) by default in UE4 because all lengths are in centimeters). ( t is a variable, we'll have to compute it). Our target (possible offseted) current location is _ P_T, and it moves with speed _ V_T, so in t seconds it will be at So how are we going to aim? Let's remember some school physics. For now just leave it there, we will return to it a bit later. Since it's first C++ class in our game, editor will take some time to create, build and open project for Visual Studio. I named it FiringLibrary (banal to the end), but it doesn't really matter. and select Blueprint Function Library as parent class. It incomplete, but we will return to it when C++ part is ready. Override Receive Execute and reproduce following graph: In our case camera is perfectly aligned to pivot point except for Z coordinate, so Target offset will be: You can measure offset using ruler (middle mouse button): Since we only have hands, we make our firer aim exactly at the camera. If for example our player mesh was full-blown humanoid mannequin, we would've liked to hit exactly in the head and Target offset would've specified vector from character's location to character mesh's head. It will specify offset from player character (it's pivot point if to be precise) location to point we want to hit. Create new Task, rename it to Fire and open for editing.Ĭreate Target offset vector variable. We deleted input events, replaced mesh reference, replaced GetControlRotation with GetActorRotation and created custom event (RMB->Add Event->Add Custom Event.) FireProjectile. It's almost copy-paste from FirstPersonCharacter. Your character should look something like this: Create vector variable GunOffset with default value (100, 33, 10) (again copy-paste from FirstPersonCharacter).Setup following Construction Script (references to components are created by simple drug'n'drop from components list):.Add Skeletal Mesh Component Gun in Components list, grub it and attach to Mesh (Inherited).Set mesh location to (-0.51, -2.6, -155.71) and Z rotation to -10° (same values as in FirstPersonCharacter).Set Anim Blueprint Class to FirstPerson_AnimBP.Set AI Controller Class to FirerController.Blueprint FirerController inherited from AIController.Blueprint Firer inherited from Character.Make new folder AICharacter in Content Browser. Described here is UE 4.10, adjust values you'll stumble on in this tutorial if your template differs. # Getting StartedĬreate new project (let's call it AIAiming hereupon) from Blueprint FPS template. Though I'll indicate all necessary steps, but since you are here it would be more efficient to know about Behavior Trees and AI controllers. You should be ready to get your hands dirty with some C++. Entities from FPS template have their names in italic.

Names of all entities (assets, variables, components) created during tutorial given in bold. If you want to see main content, go to KINSOL library section. I wrote this tutorial with maximal clarity in mind.

#Mix base movement and aim offset how to#

You'll learn how to implement basic aiming for your AI characters that do not require lot of math, only basic school knowledge on vectors and movement equations. AI aiming for the lazy - Epic Wiki # AI aiming for the lazy