# Tagged Questions

Taking focus on a target, often to shoot it, and even more often in the head.

32 views

### Draw straight line for aiming

If you played Angry Birds or any Pool game before you would be familiar with what I'm trying to do, basically what I want is: 1- Draw a line in touchesMoved so that the player can know in which ...
43 views

### Efficiently detect shoot direction with gravity playing a role?

How could I efficiently calculate shoot direction for enemy AI in order for it to hit the player? Things I know: player position, player velocity, gravity, bullet spawn position, bullet initial ...
134 views

### Aiming direction using mouse

I'm using the following code to rotate my object using mouse, for aiming direction. The only problem with this is that it only rotates between 0 to 180 and not full 360 degrees. Can any help me locate ...
6k views

### How to calculate shot angle and velocity to hit a moving target?

I am developing a 2D Android game and I am making an aiming algorithm for AI projectiles to hit enemies either following a path, or free moving. At the moment it just calculates where the target will ...
2k views

### How do I make a 2D character aim their gun toward the mouse?

Heli Attack is a perfect example of the shooting mechanic I'd like. The character aims perpetually toward the mouse. What's going on here? From what I've read so far, you could separate the arm and ...
278 views

### Calculating pitch angle to hit a target using a projectile that has fixed speed

I am trying to calculate a vertical angle needed to hit a target at [distance, elevation] 2D coordinates relative to shooter given a fixed projectile velocity, air drag and gravitational acceleration....
105 views

### How to get a turret to shoot at player in a shmup

I'm developing a basic vertical shoot em up on the DS and am trying to get stationary turrets to shoot at the player in a shoot em up. Early on I simply had them shooting in fixed 8 directions N, S, E ...
2k views

### Given an angle for an arrow, how do I find its X and Y velocities?

I want to fire an arrow toward the mouse location. X0 = the players X location X1 = the mouse X location Y0 = the players Y location Y1 = the mouse Y location I want to make a method which takes ...
198 views

### Determine if an object is inside a ship's turn radius, rotation via torque

I have a 3d space game where all ships move around using physics. I am trying to determine if a given object is reachable by a ship at a given velocity and turn radius. I believe the formula for turn ...
3k views

### Predicting enemy position in order to have an object lead its target

In my 2D game I have AI turrets that should assist the player by automatically firing towards enemies. I would like to make them fire intelligently and lead their target instead of just targeting an ...
1k views

### Aim at moving target (or predicting target's position at time it takes for projectile to hit it) [duplicate]

I have a game where I know the location and velocity of my target. I know my own location and the speed of my projectile. I want to determine either the location of the intersection between my ...
319 views

### Moving turret aiming at moving target

I've found this post Turret Aiming Formula on Reddit and a nice answer a while back. The solution in the answer works great for still sanding turrets but is almost unusable for moving turrets since ...
4k views

### How to lead a moving target from a moving shooter

I saw this question: Predicting enemy position in order to have an object lead its target. My situation is a little different though. My target moves, and the shooter moves. Also, the shooter's ...
876 views

### Calculating 2D Physics Prediction of Shot Angle with Moving Velocity of both targets

I currently have the math right to hit a moving target with 99% accuracy as long as I don't move. When I start moving the aim is nearly 80%, it should also be 99% accuracy because the target is moving ...
404 views

### Movement / aiming algorithm in 2d / tiled based game

I'm trying to create simple 2D / tiled base game in JavaScript. Entities are able to move by any number of pixels, but only in one direction at once (can't go in diagonal way). AI for enemies is ...
923 views

### One to one aiming in 2D platformer

Hello all I have been having an issue with a 2D platformer I'm working on in Unity. It has an aiming style similar to Shadow Complex where the aiming will rotate around the character in direction to ...
3k views

### Algorithm to shoot at a target in a 3d game

For those of you remembering Descent Freespace it had a nice feature to help you aim at the enemy when shooting non-homing missiles or lasers: it showed a crosshair in front of the ship you chased ...
2k views

### Aim prediction along a parabola - How to make a Tower Defence Mortar aim accurately

I am building a very basic tower defence game in Unity3D where one tower is your standard long range mortar/artillery. I want the projectile it fires to follow a parabola curve to make its movement ...
175 views

### How can I use iteration to lead targets?

In my 2D game, I have stationary AI turrets firing constant speed bullets at moving targets. So far I have used a quadratic solver technique to calculate where the turret should aim in advance of the ...
375 views

### Targeting a vehicle with complex movement?

Targeting a vehicle with known constant velocity is simple, and collision is guaranteed (see Predicting enemy position in order to have an object lead its target, Find meeting point of 2 objects in 2D,...
873 views

### Is this aiming mechanic usable in a third-person top-down game?

Long story short: I've switched to a third person - top down perspective. The camera is fixed and looks down at the player. How can I implement 3d aiming ? The player needs to aim left and right as ...
936 views

### Calculating missile trajectory around orbits before shooting

I'm building a game with Unity3D. It's a Gravity Wars clone. Both player and AI turrets shoot missiles at each other (giving an Angle and a Power variables), trying not to crash missiles on planets. ...
1k views

### How can I draw a sprite that inverts the colors behind it for an aiming reticle?

In XNA, how can I draw a sprite on the screen that inverts the colors behind that sprite (i.e. the colors that would appear if the sprite weren't in the way of them)? I feel this is the best ...
5k views

### Mouse aim in an FPS

I would like to make a First Person Shooter and move the camera with the mouse. The problem is that when the cursor reaches the limits of the screen, the camera won't turn anymore. How can I keep the ...
3k views

### Target Tracking: When to accelerate and decelerate a rotating turret?

Say I have a moving circular target defined as: Vector2 position; Vector2 velocity; float radius; And a rotating turret (mounted on a moving vehicle of some kind) defined as: Vector2 position; ...