mirror of
https://github.com/opus-tango/GravityDev3.git
synced 2026-03-19 19:52:51 +00:00
86 lines
2.3 KiB
Plaintext
86 lines
2.3 KiB
Plaintext
/*
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GravityDev3
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Third iteration of a 2D gravity simulator.
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by Nayan Sawyer
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started Mar 2022
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version 0.3.4 Mar 31 2022
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Features include clicking on a planet to lock onto it, center a focussed
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planet, and pan/zoom. Next version planned will be written in C++ for better
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acuracy and memory management, as this one has floating point imprecision
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issues, and Processing is not effecient with memory.
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*/
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PlanetManager pm; // Manages Planets
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Gui gui; // Contains and manages gui
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ActionFlags flags = new ActionFlags(); // Public global actions flags
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Vector offset;
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float g = 0.05; // Gravity constant
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float scrollDirection = 1; // Multiply by -1 to change scroll direction
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float scaleMul = 1.0; // Scale multiplier
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float guiScale = 1.0; // Seperate gui scale multiplier
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int focus = 1; // Planet in focus (-1 for no focus)
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float focusTolerance = 10; // How much error can there be when clicking a planet
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void setup(){
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size(1000,800);
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frameRate(60);
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noStroke();
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offset = new Vector(width/2, height/2);
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pm = new PlanetManager();
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gui = new Gui();
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pm.createPlanet(500.0, 400.0, 0.0, 0.0, 200.0);
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pm.createPlanet(850.0, 400.0, 0.0, 3.2, 25.0);
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pm.createPlanet(880.0, 400.0, 0.0, 4.3, 1.0);
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pm.createPlanet(700.0, 400.0, 0.0, 6.0, 2.0);
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}
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void draw(){
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background(205);
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pm.updateGravity();
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// Subtract from offset the difference between current offset and the planet in focus
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if(focus >= 0){
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if(flags.centerOnFocus){
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offset.sub(offset.x - pm.getPos(focus).x,offset.y - pm.getPos(focus).y); // Moves focused planet in center of screen
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flags.centerOnFocus = false;
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}else{
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offset.add(pm.getVel(focus).x,pm.getVel(focus).y); // Makes focused planet stationary
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}
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}
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/* PLANET MATRIX */
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pushMatrix();
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translate(width/2,height/2);
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scale(scaleMul);
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pm.drawPlanets();
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popMatrix();
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/* DEFAULT MATRIX */
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gui.display();
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/* DEBUG PRINTS
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println();
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//println(offset.x + " " + offset.y);
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Vector mouse = mouseS();
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println(mouse.x + " " + mouse.y);
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println(pm.getRenPos(0).x + " " + pm.getRenPos(0).y + " " + dist(pm.getRenPos(1).x,pm.getRenPos(1).y,mouse.x,mouse.y));
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/*
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if (focus >=0){
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println(pm.getPos(focus).x + " " + pm.getPos(focus).y);
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println((pm.getPos(focus).x - offset.x) + " " + (pm.getPos(focus).y - offset.y));}*/
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}
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