LÖVE

Posted: **Mon Apr 29, 2013 10:04 pm**

Hello so I am making a game where you eat smaller fish to grow larger to eat bigger fish and so I need a way for the player to collide with fish. I tried to make myself a collision function but it doesn't work. Can someone show me a rectangle collision function?
My collision function:

Code: Select all

function player:collidiesWith(other)
	if not other.rect then
		other.rect = makeRect(other)
	end
	local lMost, rMost, bMost, tMost
	if self.rect.left < other.rect.left then
		lMost = self.rect
		rMost = other.rect
	else 
		lMost = other.rect
		rMost = self.rect
	end
	if self.rect.top < other.rect.top then
		tMost = self.rect
		bMost = other.rect
	else
		tMost = other.rect
		bMost = self.rect
	end
	local xdist = rMost.left - lMost.right
	local ydist = bMost.top - tMost.bottom
	return xdist <= 0 and ydist <= 0
end

My full program code is below

Posted: **Tue Apr 30, 2013 3:18 am**

Hi,

I've written a rectangular collision detection for your game and added the width/height of player and fishes to their tables to make calculation easier.

Here's the collision part:

Code: Select all

function player:collidiesWith(other)
    if other.x+other.width>self.x and other.x<self.x+self.width and other.y+other.height>self.y and other.y<self.y+self.height then return true
    else return false end
end

Other changes are in entities:spawn(), entities:load(), entities:checkCollision() and player:load().
Use diff to find them

Another hint: you use a similar table.insert in both entities:spawn() and entities:load(). You should avoid any duplication of code, maybe make a function for the insert?

Greets,
vitaminx

Posted: **Tue Apr 30, 2013 4:28 am**

Hey I just finished a game like that......well similar. XD
You can check out the code. It has circle and rectangle collision detection functions.

http://love2d.org/forums/viewtopic.php?f=5&t=33349

Posted: **Fri May 03, 2013 7:30 pm**

I remember a time, long ago when I came on here often, when people would always link this for questions like these, and thus I shall do the same.

P.S @Vitaminx: Helping people doesn't always mean doing all their work for them. It's better to stop, guide them through it, and explain.

LÖVE

Rectangle Collision Function Help

Rectangle Collision Function Help

Re: Rectangle Collision Function Help

Re: Rectangle Collision Function Help

Re: Rectangle Collision Function Help