Moving sprite toward mouse

[danlthemanl]

I'm not quite sure how to do this. I've tried all I can and nothing seems to work. It must be some kind of math that I am not familiar with?

[TechnoCat]

I'm not quite sure how to do this. I've tried all I can and nothing seems to work. It must be some kind of math that I am not familiar with?

If you split it into X and Y then it becomes very easy algebra. Just test and move accordingly.

However, if you want a constant speed, you will need to use some linear algebra. Finding the x and y component from mouse to sprite and then getting the normalized vector of that.

[Robin]

In pseudocode:

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image.x = image.x + difference between mouse_x and image.x times a factor < 1
image.y = image.y + difference between mouse_y and image.y times a factor < 1

[danlthemanl]

I'm still not getting it. Whatever I do the sprite always moves in an angle, i can't get it to move toward the mouse!

this is what i have:

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	-- In load
	PlayerX = 400
	PlayerY = 300
	PlayerVel = -0.2
	
	if love.mouse.isDown("l") then
		mouseX = love.mouse.getPosition(x)
		mouseY = love.mouse.getPosition(y)
		diffX = PlayerX / mouseX - 1
		diffY = PlayerY / mouseY - 1
		
		PlayerX = PlayerX + diffX * PlayerVel
		PlayerY = PlayerY + diffY * PlayerVel
	end

and it just moves at an angle.

[tentus]

Change

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		mouseX = love.mouse.getPosition(x)
		mouseY = love.mouse.getPosition(y)

to

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mouseX,mouseY = love.mouse.getPosition()

love.mouse.getPosition() returns to values in a specific order, you can't tell it to give you a single value.

[TechnoCat]

But there is http://love2d.org/wiki/love.mouse.getX and http://love2d.org/wiki/love.mouse.getY