Look at the cursor [Top-down view][+Code]

[DWORD]

Hello. I'm new with LW engine(and here).

 

I'm just messing around with the engine to learn. I just built a top-down (simple) game with a player that look at the cursor but isn't accurate for isometric views( is perfectly good in 2.5d shooters and top-down view).

 

 

               Engine engine;
               Mouse m;

               float res = 0;

               int xw = 0, yh = 0, result = 0;

               //X
	if(m.GetX() > engine.GetWidth()/2)
	{
		xw = -((engine.GetWidth()/2)-m.GetX());
	}
	else
	{
		if(m.GetX() < engine.GetWidth()/2)
		{
			xw = -((engine.GetWidth()/2)-m.GetX());
		}
			else
		{
			xw = 0;
		}
	}

	//Y
	if(m.GetY() > engine.GetHeight()/2)
	{
		yh = ((engine.GetHeight()/2)-m.GetY());
	}
	else
	{
		if(m.GetY() < engine.GetHeight()/2)
		{
			yh = ((engine.GetHeight()/2)-m.GetY());
		}
		else
		{
			yh = 0;
		}
	}


               //Set the angle
	if(yh > 0 && xw == 0)
	{
		result = 90;
	}
	else
		if(yh < 0 && xw == 0)
		{
			result = 270;
		}
		else
			if(xw > 0 && yh == 0)
			{
				result = 0;
			}
			else
				if(xw < 0 && yh == 0)
				{
					result = 180;
				}
				else
					if(xw == 0 || yh == 0)
					{
						result = 0;
					}
					else
					{
						res =  (float)yh/xw;
						result = (atan(res) * 45) / 0.785398163;
					}

               //Correct the angle
	if(result < 0)
	{
		result = -result;
	}

	if(xw < 0 && yh > 0)
	{
		result = (90-result)+90;
	}

	else
		if(xw < 0 && yh < 0)
		{
			result = 180+result;
		}
		else
			if(xw > 0 && yh < 0)
			{
				result = (90-result)+270;
			}

 

As you see is really messy(the rest of the code is worse ). To use this you have to set rotation of your entity(Y axis) to "result" like this "YourEntity.SetRotation(Vec3(0,result,0));". So have another way to do this?

 

Thanks. Sorry about my english.

[ZioRed]

I'm not sure to have understood correctly your question, but if you have to face a model towards another one I think the easier way is with PointEntity?

 

You may create a Pivot and move it together with your mouse move coordinates (may be X and Z), then call PointEntity from your character mesh to the pivot.

[DWORD]

I'm not sure to have understood correctly your question, but if you have to face a model towards another one I think the easier way is with PointEntity?

 

You may create a Pivot and move it together with your mouse move coordinates (may be X and Z), then call PointEntity from your character mesh to the pivot.

 

Really thanks, i didn't knew about this Pivot