public override void Update(float deltaTime)
{
//While the bullet hasnt hit anything, be a bullet
if (!hasHit)
{
//Set Vector3 to forward
MthLib.Vector3 move = new MthLib.Vector3(0f, -speed * deltaTime, 0f);
//Create a rotation matrix
MthLib.Matrix3 rotMatrix = new MthLib.Matrix3();
//MathLibrary uses radians, while Raylib uses degrees
rotMatrix.SetRotateZ(local.rotation * (float)(Math.PI / 180f));
//Rotate movement to be in the dirrection the bullet is facing, and update local
local.point += rotMatrix * move;
//Check for collision
Collision();
}
else
{
//Display smoke for set amount of time, then delete object
count += deltaTime;
if (count >= 0.1f)
{
//Destroy the bullet
FreeMemory();
return;
}
}
}
public override void Update(float deltaTime)
{
//***** Look with mouse *****
/*
* //Get the difference between the mouse and the turret
* MthLib.Vector3 diff = new MthLib.Vector3(rl.Raylib.GetMouseX(), rl.Raylib.GetMouseY(), 0f);
* diff -= global.point;
* //Remove the parents rotation and add the rotation of the mouse relative to the tank. 90 is added because Atan2 starts at 90 degrees
* local.rotation = 90 - (global.rotation - local.rotation) + (float)Math.Atan2(diff.y, diff.x) * (float)(180/Math.PI);
*/
//***** Look with keys *****
//Turn left
if (rl.Raylib.IsKeyDown(left))
{
local.rotation -= rotSpeed * deltaTime;
}
//Turn right
if (rl.Raylib.IsKeyDown(right))
{
local.rotation += rotSpeed * deltaTime;
}
//Fix rotation to not loop around
if (local.rotation < 0f)
{
local.rotation += 360f;
}
else if (local.rotation > 360f)
{
local.rotation -= 360f;
}
//Create bullet at the top of the barrel
if (rl.Raylib.IsKeyPressed(shoot) /* || rl.Raylib.IsMouseButtonPressed(rl.MouseButton.MOUSE_LEFT_BUTTON)*/)
{
GameObject bullet = new BulletClass(null, bulletImg, 700f, global.rotation);
//Multiply imgSize by a small amount to keep bullet from colliding with the tank
MthLib.Vector3 offset = new MthLib.Vector3(0f, imgSize.y * 1.2f, 0f);
//Create rotation matrix
MthLib.Matrix3 rot = new MthLib.Matrix3();
rot.SetRotateZ(global.rotation * (float)(Math.PI / 180f));
//Rotate the length of the barrel by its rotation to find the offset
offset = rot * offset;
bullet.SetLocation(global.point.x - offset.x, global.point.y - offset.y);
}
}
public override void Update(float deltaTime)
{
//Turn left
if (rl.Raylib.IsKeyDown(left))
{
local.rotation -= rotSpeed * deltaTime;
}
//Turn right
if (rl.Raylib.IsKeyDown(right))
{
local.rotation += rotSpeed * deltaTime;
}
//Fix rotation to not loop around
if (local.rotation < 0f)
{
local.rotation += 360f;
}
else if (local.rotation > 360f)
{
local.rotation -= 360f;
}
//Forward
if (rl.Raylib.IsKeyPressed(up))
{
accel -= acceleration;
}
if (rl.Raylib.IsKeyReleased(up))
{
accel += acceleration;
}
//Backward
if (rl.Raylib.IsKeyPressed(down))
{
accel += acceleration;
}
if (rl.Raylib.IsKeyReleased(down))
{
accel -= acceleration;
}
//When accel is 0, reduce speed to 0
if (accel == 0f && speed != 0f)
{
float temp = (speed > 0f) ? -acceleration : acceleration;
speed += temp * deltaTime;
//If close to 0, set to 0 to prevent jittering
if (speed > -limit && speed < limit)
{
speed = 0f;
}
}
else if (speed > -maxSpeed && speed < maxSpeed)
{
//Update speed. deltaTime should be a small value, so speed should only go slightly over maxSpeed
speed += accel * deltaTime;
}
//Put speed into a vector to rotate it to the dirrection the tank is facing
MthLib.Vector3 move = new MthLib.Vector3(0f, speed, 0f);
//Create a rotation matrix, converting to radians
MthLib.Matrix3 rotMatrix = new MthLib.Matrix3();
rotMatrix.SetRotateZ(local.rotation * (float)(Math.PI / 180f));
//Rotate movement and update local
local.point += rotMatrix * move;
//Check for collision
Collision();
}
private void Collision()
{
//Update collider location and rotation
UpdateColliderLoc();
//Rotation matrix of the difference in rotation
MthLib.Matrix3 rotMatrix = new MthLib.Matrix3();
rotMatrix.SetRotateZ((local.rotation - global.rotation) * (float)(Math.PI / 180f));
//Rotate the extents, then put them back in the matrix
MthLib.Vector3 x = new MthLib.Vector3(collider.m1, collider.m4, 0);
x = rotMatrix * x;
collider.m1 = x.x;
collider.m4 = x.y;
MthLib.Vector3 y = new MthLib.Vector3(collider.m2, collider.m5, 0);
y = rotMatrix * y;
collider.m2 = y.x;
collider.m5 = y.y;
//Get an AABB for rough collision before using OBB
AABB aabb = CollisionFuncs.OBBtoAABB(collider);
//Check if going out of bounds. Because the tank needs to stay inside, just AABB needs to be tested
if (!CollisionFuncs.AABBwithin(aabb, GameManager.screenBox))
{
//Tank is out of bounds; reset transform
local = global;
return;
}
//Go through all core objects and check for collision with other tanks
foreach (GameObject obj in GameManager.coreObjects)
{
//If it isnt a tank, move on
if (obj.tag != "Tank")
{
continue;
}
TankClass tank = obj as TankClass;
//If the tank is this tank, move on
if (tank == this)
{
continue;
}
//At this point, the tank must be a different tank, so it can be collided with
//The collider is OBB, so it needs to be made an AABB
AABB otherAABB = CollisionFuncs.OBBtoAABB(tank.collider);
if (CollisionFuncs.AABBcolliding(aabb, otherAABB))
{
//If they are colliding, check OBB collision
if (CollisionFuncs.OBBcolliding(collider, tank.collider))
{
//They are colliding, so reset transform
local = global;
return;
}
}
}
}
