 |
Author |
Topic: Implementing Collision detection. (Read 805 times) |
|
jno
|
Implementing Collision detection.
« on: Sep 13th, 2004, 1:37pm » |
|
Hey there.
I'm trying to implement collision detection
in a little game of mine, but it won't work
as it should.
Someone who can give me some clues.
(Code below). the whole code can be found @
http://jno.se/thegame/star_wars_2.pde
http://jno.se/thegame/data
//Global values for the meteors
int meteor_width = 15;
int meteor2_width = 18;
int meteor3_width = 28;
int meteor_height = 16;
int meteor2_height = 18;
int meteor3_height = 30;
// speed
int meteor_y = int(random(5,11));
int meteor2_y = int(random(4,7));
int meteor3_y = int(random(2,5));
//start
int meteor_x = int(random(20,400));
int meteor2_x = int(random(20,400));
int meteor3_x = int(random(20,400));
//acc
int acc, acc2, acc3;
// Global variables for the ship
int ship_width = 80;
int ship_height = 80;
int ship_dist_wall = 100;
void meteor(){
acc = int(random(2,12));
acc2 = int(random(1, );
acc3 = int(random(5,10));
if (meteor_y > 700){
meteor_y = int(random(5,11));
meteor_x = int(random(100,400));
meteor();
}
if (meteor2_y > 700){
meteor2_y = int(random(4,7));
meteor2_x = int(random(100,400));
meteor();
}
if (meteor3_y > 700){
meteor3_y = int(random(2,5));
meteor3_x = int(random(100,400));
meteor();
}
meteor_y = meteor_y+acc;
meteor2_y = meteor2_y+acc2;
meteor3_y = meteor3_y+acc3;
if (meteor_y < 0){
meteor_y = height;
}
if (meteor2_y < 0){
meteor2_y = height;
}
if (meteor3_y < 0){
meteor3_y = height;
}
if(meteor_y > 600)
{
if(meteor_x == mx){
println(meteor_y+" > "+600+" and "+meteor_x+" == "+mx);
//run_thegame = false;
}
}
println(meteor_x+" , "+mx);
image(meteorImage1,meteor_x,meteor_y);
//rect(start,speed,50,50);
//image(meteorImage2,meteor2_x,meteor2_y);
//rect(start2,speed2,50,50);
//image(meteorImage3,meteor3_x,meteor3_y);
//rect(start3,speed3,50,50);
}
|
| « Last Edit: Sep 13th, 2004, 4:27pm by jno » |
|
|
|
|
jno
|
Re: Implementing Collision detection.
« Reply #1 on: Sep 13th, 2004, 8:20pm » |
|
Solved it 
-------------------------------------
//Collision detection
int deltaXSq = meteor_x - mx;
int deltaXSq2 = meteor2_x - mx;
int deltaXSq3 = meteor3_x - mx;
deltaXSq *= deltaXSq;
deltaXSq2 *= deltaXSq2;
deltaXSq3 *= deltaXSq3;
int deltaYSq = meteor_y - 680;
int deltaYSq2 = meteor2_y - 680;
int deltaYSq3 = meteor3_y - 680;
deltaYSq *= deltaYSq;
deltaYSq2 *= deltaYSq2;
deltaYSq3 *= deltaYSq3;
int sumRadiiSquared = meteor_width + ship_width;
int sumRadiiSquared2 = meteor2_width + ship_width;
int sumRadiiSquared3 = meteor3_width + ship_width;
sumRadiiSquared *= sumRadiiSquared;
sumRadiiSquared2 *= sumRadiiSquared2;
sumRadiiSquared3 *= sumRadiiSquared3;
if(deltaXSq + deltaYSq <= sumRadiiSquared){
run_thegame = false;
}
else if(deltaXSq2 + deltaYSq2 <= sumRadiiSquared2){
run_thegame = false;
}
else if(deltaXSq3 + deltaYSq3 <= sumRadiiSquared3){
run_thegame = false;
}
else{
image(meteorImage1,meteor_x,meteor_y);
//rect(start,speed,50,50);
image(meteorImage2,meteor2_x,meteor2_y);
//rect(start2,speed2,50,50);
image(meteorImage3,meteor3_x,meteor3_y);
//rect(start3,speed3,50,50);
}
|
|
|
|
|
|
