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Re: I have game idea, please make it for me...
Posted: 31 Mar 2011, 19:53
by Beherith
sqrt(2)/2
Re: I have game idea, please make it for me...
Posted: 31 Mar 2011, 20:11
by SinbadEV
Beherith wrote:sqrt(2)/2
oops... I didn't notice you post... I worked it out to r.sqrt(3) which was right (my circles have a radius of 50 and the offset of each row is ~86.6 so I've used 87)...
and I don't see what "sqrt(2)/2" is supposed to mean... where's the variable?
Re: I have game idea, please make it for me...
Posted: 31 Mar 2011, 20:25
by Beherith
whoops, my bad, it is sqrt(3). Height of equilateral triangle. so the answer is sqrt(3). You get no variable because you asked for ratio.
Re: I have game idea, please make it for me...
Posted: 31 Mar 2011, 20:53
by zwzsg
SinbadEV wrote:what is the ratio of vertical offset to radius for the second row in a hexagonal latice?
Ambigious question.
1) What kind of hexagonal lattice? There are two non-retarded orientations:
Do you mean:
Or
2) Which second row do you mean? The second row that is vertically aligned, or the second row that closer but shifted?
Or
The answers are 5/2, 3/2, sqrt(3), sqrt(3)/2.
SinbadEV wrote:where's the variable?
You asked for a ratio. For the ratio h/r. So there is no r. Ask about h expressed in function of r if that is what you want.
Re: I have game idea, please make it for me...
Posted: 31 Mar 2011, 21:17
by SinbadEV
Now I feel bad for having figured it out before people gave me intelligent responses... thanks for the effort anyways... and @zwzsg since you know what I'm talking about, do any of the mentioned numbers come out to finite ratios for the "closer but horizontally offset next row"?
also, I had forgotten I was asking for a ratio... I get it now.
edit and attachment:
This is the grid I'm using right now...
To move around the grid you have 6 directions
NW = Up
NE = Up-Right
E = Right
SE = Down
SW = Down-Left
W = Left
Re: I have game idea, please make it for me...
Posted: 31 Mar 2011, 23:05
by SinbadEV
In case you were wondering how freaking fast javascript is, check out my test page... it does the following every time you move your mouse:
Code: Select all
function intersects(x, y, cx, cy, r) {
dx = x-cx
dy = y-cy
return dx*dx+dy*dy <= r*r
}
function mouseMove(e)
{
var mouseX=0, mouseY=0;
if(e.offsetX) {
mouseX = e.offsetX;
mouseY = e.offsetY;
}
else if(e.layerX) {
mouseX = e.layerX;
mouseY = e.layerY;
}
/* do something with mouseX/mouseY */
var coords=document.getElementById("coords");
coords.innerHTML = mouseX+", "+mouseY;
var found = false;
for (x=0;x<x_cols;x++) {
for (y=0;y<y_rows;y++) {
cxt.fillStyle="#000000";
coordText = "("+x+","+y+")";
metrics = cxt.measureText(coordText)
wo = Math.floor(metrics.width/2);
if (intersects(mouseX,mouseY,x*2*r+r+(y*r),y*o+r, r) && !found) {
data.innerHTML = x+", "+y;
found = true;
}
}
}
if (!found) {data.innerHTML = "none"};
}
and there is no perceptible lag
edit: and don't bother pointing out that a bunch of the stuff it's doing is redundant... I've fixed it, it looks like this now
Code: Select all
function intersects(x, y, cx, cy, r) {
dx = x-cx
dy = y-cy
return dx*dx+dy*dy <= r*r
}
function mouseMove(e)
{
var mouseX=0, mouseY=0;
if(e.offsetX) {
mouseX = e.offsetX;
mouseY = e.offsetY;
}
else if(e.layerX) {
mouseX = e.layerX;
mouseY = e.layerY;
}
/* do something with mouseX/mouseY */
coords.innerHTML = mouseX+", "+mouseY;
var found = false;
for (x=0;x<x_cols;x++) {
for (y=0;y<y_rows;y++) {
if (intersects(mouseX,mouseY,x*2*r+r+(y*r),y*o+r, r) && !found) {
data.innerHTML = x+", "+y;
found = true;
}
}
}
if (!found) {data.innerHTML = "none"};
}
Re: I have game idea, please make it for me...
Posted: 01 Apr 2011, 14:33
by Caydr
How many of these threads have you made, Sinbad? You're making me feel inadequate.
Re: I have game idea, please make it for me...
Posted: 01 Apr 2011, 15:32
by PicassoCT
This one is diffrent, he contributed java-code, the usual un-productive pingpong and trolling ended for a moment. Sinbad can do it, i see contribooty. If its good i have the right to steal it.
Re: I have game idea, please make it for me...
Posted: 01 Apr 2011, 18:27
by SinbadEV
due to popular demand I have have shifted my place for posting of crazy ideas to
http://sinbadev-benjie.blogspot.com/