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2
votes
2answers
515 views

2D field of view detection inverted

I'm not sure if the title matches what I'm actually facing I'm trying to test if I can see a point is in my field of view (in the context of an NPC seeing in it's direction.) I know that: cos0 = ...
20
votes
2answers
9k views

What is the view perspective angle of most 2.5D isometric games [closed]

I examined several quite popular games to determine what perspective angle they are using. For the purpose I created a grid that is 45 and 60 degrees isometric viewed and put it onto a screenshot (of ...
2
votes
2answers
1k views

How to get enemy to follow character using angles? (atan2)

I have an enemy and a character to control. I want to get the enemy to follow the character in a straight line. I already found the angle in which the enemy needs to travel. double angle = ...
1
vote
2answers
929 views

Matrix Rotation with three Angles

I want to rotate a form with three given angles fo each of the three axis. But the GLM rotation function takes only one angle and a vector as arguments. How can I convert between both formats?
4
votes
3answers
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 ...
3
votes
2answers
665 views

what does AngleVectors method in quake 3 source code does

I just downloaded quake 3 for learning purposes. I know some of some linear algebra(basic vector math ie: dot,cross product). However I can't decipher what below method does, I know what is yaw,pitch ...
1
vote
1answer
2k views

Unity: parallel vectors and cross product, how to compare vectors

I read this post explaining a method to understand if the angle between 2 given vectors and the normal to the plane described by them, is clockwise or anticlockwise: public static AngleDir ...
1
vote
2answers
617 views

Tangent to a circle through a point

I'm trying to figure out how to calculate the following angle: I know center (p1) and radius (r) of a circle. Given a point p3 I want to calculate the angle a such as the tangent (tan) of the circle ...
4
votes
2answers
501 views

Calculating the correct particle angle in an outwards explosion

I'm creating a simple particle explosion but am stuck in finding the correct angle to rotate my particle. The effect I'm going for is similar to this: Where each particle is going outwards from the ...
1
vote
0answers
301 views

Getting and Setting Rotation in XNA around the Center of my Model with XNA

Alright, so I'm currently debating how I want to do this. Basically this is what I'm trying to accomplish. I've created a system to allow me to make my environment a little bit easier. I'm ...
1
vote
1answer
483 views

Ball bouncing at a certain angle and efficiency computations [closed]

I would like to make a pong game with a small twist (for now). Every time the ball bounces off one of the paddles i want it to be under a certain angle (between a min and a max). I simply can't ...
1
vote
2answers
419 views

How can I determine the direction of turn?

I want a function that gives me the turn direction for my object (1 or -1) I have two angles 1 - current rotation(A) 0 <= A <= 360 2 - target rotation(B) 0 <= B <= 360 int turnSide ...
-3
votes
1answer
805 views

c# xna move Image using two Vectors?

initially image placed (0,0)th position and where ever i touch that is end position. Now i got Start Position(0,0) and End Position(200,200). i want to move start to end vector using angle. If ...
0
votes
1answer
536 views

Calculate path of laser beam?

Lets say we have a laser beam emitter that has a position and an angle (in a 2D world to simplify things). The laser emitted from that emitter will start at that position, and continue heading in the ...
4
votes
3answers
8k views

How do I find a point given an angle and distance to it?

I'm working on a school project creating a tank team in the programming game Robocode. (It's a tank battle game with self-programmed bots, in Java). I'm programming a scout bot that scans, finds ...
3
votes
3answers
5k views

Getting the angle between two objects?

I have a set of boxes which create a sort of path, they don't intersect very smoothy and to help that process I'm trying ot find a way to get an angle between them that can make it easier to generate ...
18
votes
10answers
12k views

Comparing angles and working out the difference

I want to compare angles and get an idea of the distance between them. For this application, I'm working in degrees, but it would also work for radians and grads. The problem with angles is that they ...