Example #1
0
        public static bool ProjectileHitsVehicle(DynamicTransform2 vehicleTransformState, VehiclePrototype prototype, DynamicPosition2 projectileState, float deltaTime)
        {
            Vector2 projectileToVehicle = vehicleTransformState.Position - projectileState.Position;
            float   currentDistanceSq   = projectileToVehicle.LengthSquared();
            Vector2 relativeVelocities  = vehicleTransformState.Velocity - projectileState.Velocity;
            float   dot = Vector2.Dot(projectileToVehicle, relativeVelocities);

            if (dot >= 0f)
            {
                return(currentDistanceSq <= prototype.VehicleSize * prototype.VehicleSize);
            }
            float relativeVelocityModuleSq = relativeVelocities.LengthSquared();
            float timeToClosest            = Math.Min(-dot / relativeVelocityModuleSq, deltaTime);
            float closestDistanceSq        = currentDistanceSq + timeToClosest * ((2f * dot) + (timeToClosest * relativeVelocityModuleSq));

            return(closestDistanceSq <= prototype.VehicleSize * prototype.VehicleSize);
        }
Example #2
0
        private static DynamicTransform2 ProcessCollision(DynamicTransform2 newDynamicTransform, VehiclePrototype prototype, SimulationData simulationData)
        {
            float   penetration;
            Vector2 collisionAxis;

            if (simulationData.CollisionWithArenaBounds(prototype.VehicleSize, newDynamicTransform.Position, out penetration, out collisionAxis))
            {
                const float      kBounce            = 2f; //2 is rigid bounce, 1 is no bounce
                Vector2          newPosition        = newDynamicTransform.Position + kBounce * penetration * collisionAxis;
                Vector2          newVelocity        = newDynamicTransform.Velocity - kBounce * Vector2.Dot(newDynamicTransform.Velocity, collisionAxis) * collisionAxis;
                DynamicPosition2 newDynamicPosition = new DynamicPosition2(newPosition, newVelocity);
                newDynamicTransform = new DynamicTransform2(newDynamicPosition, newDynamicTransform.DynamicOrientation);
            }
            return(newDynamicTransform);
        }
Example #3
0
        //Player input gets processed into a ControlState, and AI will provide a control state
        public static SimulationState ProcessState(SimulationState state, SimulationData simulationData, Dictionary <uint, VehicleControls> controllerInputs, float deltaTime)
        {
            int             currentVehicleCount  = state.Vehicles.Length;
            SimulationState nextSimState         = new SimulationState(currentVehicleCount);
            int             totalProjectileCount = 0;

            for (int i = 0; i < state.Projectiles.Length; ++i)
            {
                var projectiles = state.Projectiles[i];
                int localCount  = 0;
                if (projectiles != null)
                {
                    localCount = projectiles.Count;
                }
                totalProjectileCount += localCount;
                nextSimState.SetProjectileCount(state.IndexToID[i], localCount + 1);
            }
            for (int vehicleIndex = 0; vehicleIndex < state.Vehicles.Length; ++vehicleIndex)
            {
                uint controllerID = state.IndexToID[vehicleIndex];
                Debug.Assert(controllerInputs.ContainsKey(controllerID));

                VehiclePrototype prototype           = simulationData.GetVehiclePrototype(controllerID);
                VehicleControls  inputControlState   = controllerInputs[controllerID];
                VehicleState     currentVehicleState = state.Vehicles[vehicleIndex];

                DynamicTransform2 newDynamicTransform = ProcessVehicleDrive(currentVehicleState.DynamicTransform, prototype, inputControlState.DriveControls, deltaTime);
                newDynamicTransform = ProcessCollision(newDynamicTransform, prototype, simulationData);

                GunState currentGunState = currentVehicleState.GunState;
                GunMount gunMount        = prototype.Guns;
                bool     projectileFired;
                GunState nextGunState = ProcessGunstate(gunMount, currentGunState, inputControlState.GunTriggerDown, deltaTime, out projectileFired);
                if (projectileFired)
                {
                    DynamicPosition2 projectileState = CreateProjectileState(newDynamicTransform, gunMount, currentGunState.NextGunToFire, deltaTime);
                    SpawnProjectile(vehicleIndex, nextSimState, projectileState);
                }

                VehicleState newVehicleState = new VehicleState(newDynamicTransform, inputControlState.DriveControls, nextGunState);

                nextSimState.AddVehicle(controllerID, newVehicleState);
            }
            //TODO: The above resulting transforms can be put in a collection ready for collision detection below!
            for (int projectileIndex = 0; projectileIndex < state.Projectiles.Length; ++projectileIndex)
            {
                var projectiles = state.Projectiles[projectileIndex];
                if (projectiles != null)
                {
                    foreach (var projectile in projectiles)
                    {
                        bool hit = false;
                        for (int targetVehicleIndex = 0; targetVehicleIndex < state.Vehicles.Length; ++targetVehicleIndex)
                        {
                            if (targetVehicleIndex != projectileIndex)
                            {
                                VehicleState vehicleToHit = state.Vehicles[targetVehicleIndex];
                                if (ProjectileHitsVehicle(vehicleToHit.DynamicTransform, simulationData.GetVehiclePrototype(state.IndexToID[targetVehicleIndex]), projectile, deltaTime))
                                {
                                    hit = true;
                                    break;
                                }
                            }
                        }
                        if (!hit)
                        {
                            Vector2 nextPosition = projectile.Position + deltaTime * projectile.Velocity;
                            if (simulationData.InsideArena(nextPosition))
                            {
                                DynamicPosition2 nextProjectileState = new DynamicPosition2(nextPosition, projectile.Velocity);
                                nextSimState.Projectiles[projectileIndex].Add(nextProjectileState);
                            }
                        }
                        else
                        {
                            RegisterHit(nextSimState, projectileIndex);
                        }
                    }
                }
            }
            return(nextSimState);
        }
Example #4
0
        private static DynamicTransform2 ProcessVehicleDrive(DynamicTransform2 currentVehicleState, VehiclePrototype prototype, VehicleDriveControls controlState, float deltaTime)
        {
            var newDynamicTransform = prototype.VehicleDrive(currentVehicleState, controlState, deltaTime);

            //Gun recoil would go here
            return(newDynamicTransform);
        }
Example #5
0
 public void RegisterPlayer(uint playerID, VehiclePrototype prototype)
 {
     mPrototypeMap[playerID] = prototype;
 }