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raptorstrike

2d collistion detection

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Check the X value of the ball to the inner X value of the paddles, then check to see if the Y value is within the location of the paddle. Its not the prettiest method but its about the simplest i can think of

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see im having some problems witht that maybe imy just not updating the ball position correctly but that method is giving me some problems how would i store the location of the ball (in terms of the window) becuase i would need to store this in a variable to do the check

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make a class or struct that represents a ball.


class Ball
{
public:

Ball(int x,int y){xPos = x; yPos = y;}
~Ball(){}

int Get_X(){return xPos;}
int Get_Y(){return yPos;}

int Set_X(int x){xPos = x;}
int Set_Y(int y){yPos = y;}

private:

int xPos;
int yPos;
};


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This is how i did mine.

But like the previous poster said use a struct\class, and yeah im pretty sure this aint the best way to do it.

bool DDraw::CheckCollision(int iSprite1,int iSprite2)
{

bool foundX;

//for each X pixel of sprite 2
for (int iX=DDsprite[iSprite2].posX;iX<DDsprite[iSprite2].width;iX++)
{
//loop through all X pixels of sprite 1 and compare
for (int i=DDsprite[iSprite1].posX;i<DDsprite[iSprite1].width;i++)
{
//if match found
if (i == iX)
{
foundX = true;
}
}
}


if (foundX)
{
//for each Y pixel of sprite 2
for (int iY=DDsprite[iSprite2].posY;iY<DDsprite[iSprite2].height;iY++)
{
//loop through all Y pixels of sprite 1 for match
for (int k=DDsprite[iSprite1].posY;k<DDsprite[iSprite1].height;k++)
{
//if match found
if (k == iY)
{
//sprites have collided
return true;
}
}
}
}

return false;
}


[EDIT] i find it a bit strange for a board of this caliber that focuses mostly on code not to have a CODE block option right on the post screen.

[Edited by - jsloan on September 12, 2004 2:18:26 AM]

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Quote:
Original post by jsloan
[EDIT] i find it a bit strange for a board of this caliber that focuses mostly on code not to have a CODE block option right on the post screen.


Good point. Anyway use [source] // code to be formated goes here [/source] or [code] // short snippets go here [/code] tags to accomplish that task.

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