I started programming with Processing today and wrote a little programm that creates 10 random rectangles
Now I like to make them disappear when the mouse is over them, but my actual code is not working
I would apprechiate some tipps ...
import java.awt.Rectangle;
Rectangle rect[] = new Rectangle[10];
int xpos[] = new int[10];
int ypos[] = new int[10];
int size = 25;
boolean visible[] = new boolean[10];
void setup()
{
size(640,480);
frameRate(60);
smooth();
background(0);
stroke(255);
fill(255);
textAlign(CENTER);
textSize(200);
text("Catch", width/2, 280);
textSize(100);
text("them", width/2, 380);
// 10 Random positions for the rectangles
for (int i=0; i < 10; i++) {
xpos[i] = int(random (615));
ypos[i] = int(random (455));
visible[i] = true;
}
for (int i=0; i < 10; i++) {
rect[i] = new Rectangle(xpos[i],ypos[i],size,size);
}
}
void draw()
{
for (int i=0; i < 10; i++) {
if (visible[i] == true){
fill(255,0,0);
rect(rect[i].x,rect[i].y,rect[i].width,rect[i].height);}
else if (rect[i].contains(mouseX,mouseY)){
visible[i] = false; }
}}
Why else if? The way it is written, it will only check to see if the mouse is over a rect if visible[i] == false. They are all visible so it never gets executed.
Also to see the effect, you must call background(0); at the top of your draw method. Otherwise you never clear the screen to see the results.
You should also consider cleaning up your indentation and braces {} to make sure you are formatting the code in a consistent way. That would make it easier to read.
Related
For a sailing game I'm working on, I've added functionality to programmatically create damage holes in a mesh (e.g. cannonball holes in a sail). This is largely based on the method here (link to the example code here)
private void MessWithMesh() {
filter = this.transform.parent.gameObject.GetComponent<MeshFilter>();
mesh = filter.mesh;
filter.mesh = GenerateMeshWithHoles();
}
private IEnumerator GenerateTrisWithVertex() {
// Destroying the sail won't work until this has finished, but it only takes a second or two so I don't think anybody will notice.
trisWithVertex = new List<int>[origvertices.Length];
for (int i = 0; i <origvertices.Length; ++i)
{
trisWithVertex[i] = ArrayHelper.IndexOf(origtriangles, i);
yield return null;
}
yield return null;
}
Mesh GenerateMeshWithHoles()
{
float damageRadius = 1f;
Transform parentTransform = this.transform.parent.transform;
Hole[] holes = this.GetComponentsInChildren<Hole>();
foreach (Hole hole in holes) {
Vector3 trackPos = hole.transform.position;
float closest = float.MaxValue;
int closestIndex = -1;
int countDisabled = 0;
damageRadius = hole.diameter;
for (int i = 0; i <origvertices.Length; ++i)
{
Vector3 v = new Vector3(origvertices[i].x * parentTransform.localScale.x, origvertices[i].y * parentTransform.localScale.y, origvertices[i].z * parentTransform.localScale.z) + parentTransform.position;
Vector3 difference = v - trackPos;
if (difference.magnitude < closest)
{
closest = difference.magnitude;
closestIndex = i;
}
if (difference.magnitude < damageRadius)
{
for (int j = 0; j <trisWithVertex[i].Count; ++j)
{
int value = trisWithVertex[i][j];
int remainder = value % 3;
trianglesDisabled[value - remainder] = true;
trianglesDisabled[value - remainder + 1] = true;
trianglesDisabled[value - remainder + 2] = true;
countDisabled++;
}
}
}
// If no triangles were removed, then we'll just remove the one that was closest to the hole.
// This shouldn't really happen, but in case the hole is off by a bit from where it should have hit the mesh, we'll do this to make sure there's at least a hole.
if (countDisabled == 0 && closestIndex > -1) {
Debug.Log("Removing closest vertex: " + closestIndex);
for (int j = 0; j < trisWithVertex[closestIndex].Count; ++j)
{
int value = trisWithVertex[closestIndex][j];
int remainder = value % 3;
trianglesDisabled[value - remainder] = true;
trianglesDisabled[value - remainder + 1] = true;
trianglesDisabled[value - remainder + 2] = true;
}
}
}
triangles = ArrayHelper.RemoveAllSpecifiedIndicesFromArray(origtriangles, trianglesDisabled).ToArray();
mesh.SetTriangles(triangles, 0);
for (int i = 0; i <trianglesDisabled.Length; ++i)
trianglesDisabled[i] = false;
return mesh;
}
When a cannonball hits the sail, I add a Hole object at the location of the impact, and I call MessWithMesh. The holes are often generated correctly, but many times they're only visible from one side of the sail (it looks fully intact from the other side). It's often visible from the opposite side of the sail that the cannonball impacted (the far side, not the near side), if that's at all helpful. The ship I'm using is this free asset.
I'm not really familiar with meshes, so I don't really understand what's going on.
I have a ragdoll. I want to increase the scale of this ragdoll in game mode. But when I increase the scale ragdoll' bones mingle and drool. How can i prevent this from happening? Related pictures below.
Normal Scale
3x Scale
Welcome to StackOverflow. After a quick search on Google and I've found an answer for you:
http://answers.unity.com/answers/1556521/view.html
TL;DR: joints calculate anchor only on start, but are never updated later. To make them update later, just reassign them
Transform[] children;
private Vector3[] _connectedAnchor;
private Vector3[] _anchor;
void Start()
{
children = transform.GetComponentsInChildren<Transform>();
_connectedAnchor = new Vector3[children.Length];
_anchor = new Vector3[children.Length];
for (int i = 0; i < children.Length; i++)
{
if (children[i].GetComponent<Joint>() != null)
{
_connectedAnchor[i] = children[i].GetComponent<Joint>().connectedAnchor;
_anchor[i] = children[i].GetComponent<Joint>().anchor;
}
}
}
private void Update()
{
for (int i = 0; i < children.Length; i++)
{
if (children[i].GetComponent<Joint>() != null)
{
children[i].GetComponent<Joint>().connectedAnchor = _connectedAnchor[i];
children[i].GetComponent<Joint>().anchor = _anchor[i];
}
}
}
Just make sure you do this reassign only when needed as it will hurt your performance...
I am sure that everybody knows about this script, http://wiki.unity3d.com/index.php/Floating_Origin, that fixes problems with floating origin easily.
The problem is that the script is outdated and does not move the particle effects created by visual effect graph.
I was trying to rewrite it but I cant seem to make an array to store all the particles, like with the previous one, thus I can't continue from there.
Here is my code:
// Based on the Unity Wiki FloatingOrigin script by Peter Stirling
// URL: http://wiki.unity3d.com/index.php/Floating_Origin
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.VFX;
using UnityEngine.Experimental.VFX;
public class FloatingOrigin : MonoBehaviour
{
[Tooltip("Point of reference from which to check the distance to origin.")]
public Transform ReferenceObject = null;
[Tooltip("Distance from the origin the reference object must be in order to trigger an origin shift.")]
public float Threshold = 5000f;
[Header("Options")]
[Tooltip("When true, origin shifts are considered only from the horizontal distance to orign.")]
public bool Use2DDistance = false;
[Tooltip("When true, updates ALL open scenes. When false, updates only the active scene.")]
public bool UpdateAllScenes = true;
[Tooltip("Should ParticleSystems be moved with an origin shift.")]
public bool UpdateParticles = true;
[Tooltip("Should TrailRenderers be moved with an origin shift.")]
public bool UpdateTrailRenderers = true;
[Tooltip("Should LineRenderers be moved with an origin shift.")]
public bool UpdateLineRenderers = true;
private ParticleSystem.Particle[] parts = null;
VisualEffect[] visualEffect = null;
void LateUpdate()
{
if (ReferenceObject == null)
return;
Vector3 referencePosition = ReferenceObject.position;
if (Use2DDistance)
referencePosition.y = 0f;
if (referencePosition.magnitude > Threshold)
{
MoveRootTransforms(referencePosition);
if (UpdateParticles)
MoveParticles(referencePosition);
if (UpdateTrailRenderers)
MoveTrailRenderers(referencePosition);
if (UpdateLineRenderers)
MoveLineRenderers(referencePosition);
}
}
private void MoveRootTransforms(Vector3 offset)
{
if (UpdateAllScenes)
{
for (int z = 0; z < SceneManager.sceneCount; z++)
{
foreach (GameObject g in SceneManager.GetSceneAt(z).GetRootGameObjects())
g.transform.position -= offset;
}
}
else
{
foreach (GameObject g in SceneManager.GetActiveScene().GetRootGameObjects())
g.transform.position -= offset;
}
}
private void MoveTrailRenderers(Vector3 offset)
{
var trails = FindObjectsOfType<TrailRenderer>() as TrailRenderer[];
foreach (var trail in trails)
{
Vector3[] positions = new Vector3[trail.positionCount];
int positionCount = trail.GetPositions(positions);
for (int i = 0; i < positionCount; ++i)
positions[i] -= offset;
trail.SetPositions(positions);
}
}
private void MoveLineRenderers(Vector3 offset)
{
var lines = FindObjectsOfType<LineRenderer>() as LineRenderer[];
foreach (var line in lines)
{
Vector3[] positions = new Vector3[line.positionCount];
int positionCount = line.GetPositions(positions);
for (int i = 0; i < positionCount; ++i)
positions[i] -= offset;
line.SetPositions(positions);
}
}
private void MoveParticles(Vector3 offset)
{
var particles = FindObjectsOfType<ParticleSystem>() as ParticleSystem[];
foreach (ParticleSystem system in particles)
{
if (system.main.simulationSpace != ParticleSystemSimulationSpace.World)
continue;
int particlesNeeded = system.main.maxParticles;
if (particlesNeeded <= 0)
continue;
bool wasPaused = system.isPaused;
bool wasPlaying = system.isPlaying;
if (!wasPaused)
system.Pause();
// ensure a sufficiently large array in which to store the particles
if (parts == null || parts.Length < particlesNeeded)
{
parts = new ParticleSystem.Particle[particlesNeeded];
}
// now get the particles
int num = system.GetParticles(parts);
for (int i = 0; i < num; i++)
{
parts[i].position -= offset;
}
system.SetParticles(parts, num);
if (wasPlaying)
system.Play();
}
var particles2 = FindObjectsOfType<VisualEffect>() as VisualEffect[];
foreach (VisualEffect system in particles2)
{
int particlesNeeded = system.aliveParticleCount;
if (particlesNeeded <= 0)
continue;
bool wasPaused = !system.isActiveAndEnabled;
bool wasPlaying = system.isActiveAndEnabled;
if (!wasPaused)
system.Stop();
// ensure a sufficiently large array in which to store the particles
if (visualEffect == null || visualEffect.Length < particlesNeeded)
{
visualEffect = new VisualEffect().visualEffectAsset[particlesNeeded];
}
// now get the particles
int num = system.GetParticles(parts);
for (int i = 0; i < num; i++)
{
parts[i].position -= offset;
}
system.SetParticles(parts, num);
if (wasPlaying)
system.Play();
}
}
}
On the line(this is a wrong line and everything below it too)
visualEffect = new VisualEffect().visualEffectAsset[particlesNeeded];
, I need to create a similar array to the line (correct one, but for the old particle system)
parts = new ParticleSystem.Particle[particlesNeeded];
that creates array full of particles (but with VisualEffect class).
If I can fix this one, there should not be any problem with the rest.
I think that solving this problem will help literally thousands of people now and in the future, since limitation for floating origin in unity are horrible and majority of people working in unity will need floating origin for their game worlds, with VFX graph particles.
Thanks for the help.
My question has been answered here:
https://forum.unity.com/threads/floating-origin-and-visual-effect-graph.962646/#post-6270837
I'm spawning objects from a list and so-far i got them to find a parent object that's already live in the scene.The problem is Random.Range() isn't working like I want. I want the listed Objects to spawn to a random parent, instead, they're spawning to the they're parent relative to the order of the list.
Ex. 0,1,2,3,4,5,6,7,8,9 = Bad
Ex. 8,3,1,4,6,3,7,9,5,2 = Good
lol
var theRange = Random.Range(obj1.Length,obj1.Length);
for(var i: int = 0; i < theRange; i++){
var obj2 : GameObject = obj1[i];
if(obj2.transform.childCount == 0){
objfromList.transform.parent = obj2.transform;
objfromList.transform.localPosition = Vector3(0,-2,0);
}
}
Deeply thankful
Following up on my comment, it sounds like you just want a shuffle function. Here is a simple Fisher-Yates shuffle:
void shuffle(int[] a){
for(int i = a.Length-1; i>=0; i--){
int j = Random.Range(0,i);
int tmp = a[i];
a[i] = a[j];
a[j] = tmp;
}
}
void usage(){
int[] a = {0,1,2,3,4,5}; // assumes obj1.Length = 6
shuffle(a);
for(int i = 0; i < a.Length; i++){
GameObject obj2 = obj1[a[i]];
GameObject objFromList = GetNextObject(); // dummy method grabbing next list object
objFromList.transform.parent = obj2.transform;
objFromList.transform.localPosition = Vector3(0,-2,0);
}
}
This should get you part way to what you need. If the order of obj1 isn't important you can shuffle it directly instead of using a secondary array like a in my example.
I'm having an issue with tracking the movement of a mouse in a Processing sketch when its ported to Javascript. As far as I can tell, the program runs fine except that it wont activate mouseMoved, either as an event or as a logical operation. I also tried pMousex != mouseX and that also didn't work. Any help?
color[] palette = new color[5];
color c1;
color c2;
color c3;
color c4;
color c5;
color bgColor;
int swarmSize;
int xVariance;
int yVariance;
int maxSize;
int maxOpacity;
int maxStroke;
//Non-definables for swarm gen
int sideMod;
int sSize;
int opacity;
int stroke;
void setup() {
size(600, 400);
c1= #BF2633;
c2= #A6242F;
c3= #D9CEAD;
c4= #C0B18F;
c5= #011C26;
bgColor = color(23, 76, 79);
palette[0] = c1;
palette[1] = c2;
palette[2] = c3;
palette[3] = c4;
palette[4] = c5;
swarmSize = 1;
xVariance = 60;
yVariance = 60;
maxSize = 30;
maxOpacity = 255;
maxStroke = 4;
}
void draw() { //tried tracking pMouse != mouse here, no dice
}
void drawSwarm() {
for (int i = 0; i < swarmSize; i++)
{
if (random(1, 10) < 5) {
sideMod = -1;
}
else {
sideMod = 1;
}
stroke = int(random(1, maxStroke));
sSize = int(random(1, maxSize));
opacity = int(random(0, maxOpacity));
strokeWeight(stroke);
stroke(palette[int(random(1, 5))], opacity);
fill(palette[int(random(1, 5))], opacity);
// strokeWeight(int(random(1, 7)));
ellipse(mouseX + int(random(1, xVariance)) * sideMod, mouseY+ int(random(1, yVariance)), sSize, sSize);
}
}
void mouseMoved() { //Doesn't work in processing.js
drawSwarm();
}
void keyPressed() {
background(bgColor);
}
The following code works just fine (see http://jsfiddle.net/qPpRQ/)
int x,y;
void draw() {
point(x,y);
}
void mouseMoved() {
x = mouseX;
y = mouseY;
redraw();
}
usually, draw instructions in a mouse handler don't work all that well, you generally want to set up your state based on the mouse position, and then call redraw(), with the code that actually draws things to the screen being called from draw, not from your event handler.