particles.js

const offscreenParticleCanvas=document.createElement("canvas"),offscreenParticleCtx=offscreenParticleCanvas.getContext("2d",{alpha:!1}),UNKNOWN_PARTICLE=0,NITRO_PARTICLE=1,NAPALM_PARTICLE=2,C4_PARTICLE=3,LAVA_PARTICLE=4,MAGIC1_PARTICLE=5,MAGIC2_PARTICLE=6,METHANE_PARTICLE=7,TREE_PARTICLE=8,CHARGED_NITRO_PARTICLE=9,NUKE_PARTICLE=10,__particleInit=[UNKNOWN_PARTICLE_INIT,NITRO_PARTICLE_INIT,NAPALM_PARTICLE_INIT,C4_PARTICLE_INIT,LAVA_PARTICLE_INIT,MAGIC1_PARTICLE_INIT,MAGIC2_PARTICLE_INIT,METHANE_PARTICLE_INIT,TREE_PARTICLE_INIT,CHARGED_NITRO_PARTICLE_INIT,NUKE_PARTICLE_INIT];Object.freeze(__particleInit);const __particleActions=[UNKNOWN_PARTICLE_ACTION,NITRO_PARTICLE_ACTION,NAPALM_PARTICLE_ACTION,C4_PARTICLE_ACTION,LAVA_PARTICLE_ACTION,MAGIC1_PARTICLE_ACTION,MAGIC2_PARTICLE_ACTION,METHANE_PARTICLE_ACTION,TREE_PARTICLE_ACTION,CHARGED_NITRO_PARTICLE_ACTION,NUKE_PARTICLE_ACTION];function UNKNOWN_PARTICLE_INIT(t){}function UNKNOWN_PARTICLE_ACTION(t){throw"Unknown particle"}function NITRO_PARTICLE_INIT(t){t.setColor(FIRE);const e=5+10*Math.random(),i=Math.random()*TWO_PI;t.setVelocity(e,i),t.size=2+7*Math.random()}function NITRO_PARTICLE_ACTION(t){offscreenParticleCtx.beginPath(),offscreenParticleCtx.lineWidth=t.size,offscreenParticleCtx.strokeStyle=t.rgbaColor,offscreenParticleCtx.lineCap="round",offscreenParticleCtx.moveTo(t.x,t.y),t.x+=t.xVelocity,t.y+=t.yVelocity,offscreenParticleCtx.lineTo(t.x,t.y),offscreenParticleCtx.stroke();const e=t.actionIterations;e%5==0&&(t.size/=1.3),e%15==0&&(t.yVelocity+=e/5*10),(t.size<1.75||t.offCanvas())&&particles.makeParticleInactive(t)}function NAPALM_PARTICLE_INIT(t){t.setColor(FIRE),t.size=8*Math.random()+6,t.xVelocity=8*Math.random()-4,t.yVelocity=-1*(4*Math.random()+4),t.maxIterations=Math.floor(10*Math.random())+5}function NAPALM_PARTICLE_ACTION(t){t.drawCircle(t.size),t.x+=t.xVelocity,t.y+=t.yVelocity,t.size*=1+.1*Math.random(),t.actionIterations>t.maxIterations&&particles.makeParticleInactive(t)}function C4_PARTICLE_INIT(t){t.setColor(FIRE);const e=1e4*Math.random();t.size=e<9e3?10*Math.random()+3:e<9500?32*Math.random()+3:e<9800?64*Math.random()+3:128*Math.random()+3}function C4_PARTICLE_ACTION(t){t.drawCircle(t.size),t.actionIterations%3==0&&(t.size/=3,t.size<=1&&particles.makeParticleInactive(t))}function LAVA_PARTICLE_INIT(t){t.setColor(FIRE);var e=QUARTER_PI+Math.random()*HALF_PI;random()<75&&Math.abs(HALF_PI-e)<EIGHTEENTH_PI&&(e+=EIGHTEENTH_PI*(e>HALF_PI?1:-1)),t.xVelocity=(1+3*Math.random())*Math.cos(e),t.yVelocity=(-4*Math.random()-3)*Math.sin(e),t.initYVelocity=t.yVelocity,t.yAcceleration=.06,t.size=4+3*Math.random(),t.y-=t.size}function LAVA_PARTICLE_ACTION(t){offscreenParticleCtx.beginPath(),offscreenParticleCtx.lineWidth=t.size,offscreenParticleCtx.strokeStyle=t.rgbaColor,offscreenParticleCtx.lineCap="round",offscreenParticleCtx.moveTo(t.x,t.y);const e=t.actionIterations;if(t.x+=t.xVelocity,t.y=t.initY+t.initYVelocity*e+t.yAcceleration*e*e/2,offscreenParticleCtx.lineTo(t.x,t.y),offscreenParticleCtx.stroke(),t.x<0||t.x>MAX_X_IDX||t.y>MAX_Y_IDX)particles.makeParticleInactive(t);else if(random()<25){t.yVelocity=t.initYVelocity+t.yAcceleration*e;const a=t.aboutToHit();var i=-1;if(a===WATER||a===SALT_WATER?random()<58&&(i=ROCK):a===LAVA||a===ROCK?random()<75&&(i=LAVA):a===ICE||a===CHILLED_ICE||a===CRYO?random()<70&&(i=ROCK):a===WALL&&random()<25&&(i=LAVA),-1!==i)return t.setColor(i),t.drawCircle(t.size/2),void particles.makeParticleInactive(t)}}function MAGIC1_PARTICLE_INIT(t){t.reinitialized||t.setRandomColor(MAGIC_COLORS);var e=5+Math.round(13*Math.random());const i=[t];var a;for(a=1;a!==e;a++){const e=particles.addActiveParticle(0,t.x,t.y,t.i);if(!e)break;particles.particleCounts[e.type]--,particles.particleCounts[5]++,e.type=5,e.setColor(t.color),i.push(e)}e=i.length;const n=TWO_PI/e,r=7+3*Math.random(),c=4+4*Math.random();var o=0;for(a=0;a!==e;a++){const t=i[a];t.setVelocity(r,o),t.size=c,o+=n}}function MAGIC1_PARTICLE_ACTION(t){offscreenParticleCtx.beginPath(),offscreenParticleCtx.lineWidth=t.size,offscreenParticleCtx.strokeStyle=t.rgbaColor,offscreenParticleCtx.lineCap="square",offscreenParticleCtx.moveTo(t.x,t.y),t.x+=t.xVelocity,t.y+=t.yVelocity,offscreenParticleCtx.lineTo(t.x,t.y),offscreenParticleCtx.stroke(),t.offCanvas()&&particles.makeParticleInactive(t)}function MAGIC2_PARTICLE_INIT(t){t.setRandomColor(MAGIC_COLORS),t.size=4+8*Math.random(),t.x=Math.floor(width/2),t.y=Math.floor(height/2),t.initX=t.x,t.initY=t.y,t.magic_2_max_radius=Math.sqrt(width*width+height*height)/2+t.size,t.magic_2_theta=0,t.magic_2_speed=20,t.magic_2_radius_spacing=25+55*Math.random(),t.magic_2_radius=t.magic_2_radius_spacing}function MAGIC2_PARTICLE_ACTION(t){offscreenParticleCtx.beginPath(),offscreenParticleCtx.lineWidth=t.size,offscreenParticleCtx.strokeStyle=t.rgbaColor,offscreenParticleCtx.lineCap="round",offscreenParticleCtx.moveTo(t.x,t.y);const e=t.magic_2_theta+t.magic_2_speed/t.magic_2_radius;t.magic_2_theta=e;const i=t.magic_2_theta/TWO_PI*t.magic_2_radius_spacing;t.magic_2_radius=i,t.x=i*Math.cos(e)+t.initX,t.y=i*Math.sin(e)+t.initY,offscreenParticleCtx.lineTo(t.x,t.y),offscreenParticleCtx.stroke(),i>t.magic_2_max_radius&&particles.makeParticleInactive(t)}function METHANE_PARTICLE_INIT(t){t.setColor(FIRE),t.size=10+10*Math.random()}function METHANE_PARTICLE_ACTION(t){const e=t.actionIterations;t.drawCircle(t.size),e>2&&particles.makeParticleInactive(t)}Object.freeze(__particleActions);class TreeType{constructor(){throw"Should never actually instantiate this."}static initTreeParticle(t,e){}static branchAngles(t){throw"Branch angles not implemented."}static branchSpacingFactor(t){throw"Branch spacing factor not implemented."}}class Tree0 extends TreeType{static branchAngles(t){const e=EIGHTH_PI+Math.random()*QUARTER_PI;return[t.angle+e,t.angle-e]}static branchSpacingFactor(t){return.9}}class Tree1 extends TreeType{static initTreeParticle(t,e){const i=e?e.branchDirection:random()<50?1:-1;t.branchDirection=i}static branchAngles(t){const e=(EIGHTH_PI+Math.random()*EIGHTH_PI)*t.branchDirection;return[t.angle+e,t.angle]}static branchSpacingFactor(t){return.7}}class Tree2 extends TreeType{static branchAngles(t){const e=Math.random()*SIXTEENTH_PI+EIGHTH_PI;return[t.angle,t.angle+e,t.angle-e]}static branchSpacingFactor(t){return.6}}const TREE_TYPES=[Tree0,Tree2],NUM_TREE_TYPES=TREE_TYPES.length;function TREE_PARTICLE_INIT(t){t.setColor(BRANCH),t.size=random()<50?3:4;const e=1+.5*Math.random(),i=-1*(HALF_PI+EIGHTH_PI-Math.random()*QUARTER_PI);t.setVelocity(e,i),t.generation=1,t.branchSpacing=15+Math.round(45*Math.random()),t.maxBranches=1+Math.round(2*Math.random()),t.nextBranch=t.branchSpacing,t.branches=0,random()<62?t.treeType=0:t.treeType=1+Math.floor(Math.random()*NUM_TREE_TYPES-1),TREE_TYPES[t.treeType].initTreeParticle(t,null)}function TREE_PARTICLE_ACTION(t){if(offscreenParticleCtx.beginPath(),offscreenParticleCtx.lineWidth=t.size,offscreenParticleCtx.strokeStyle=t.rgbaColor,offscreenParticleCtx.lineCap="round",offscreenParticleCtx.moveTo(t.x,t.y),t.x+=t.xVelocity,t.y+=t.yVelocity,offscreenParticleCtx.lineTo(t.x,t.y),offscreenParticleCtx.stroke(),t.aboutToHit()===WALL)return void particles.makeParticleInactive(t);const e=t.actionIterations;if(e>=t.nextBranch){if(t.branches++,0===t.maxBranches)return void particles.makeParticleInactive(t);const a=t.color===LEAF||t.branches===t.maxBranches,n=TREE_TYPES[t.treeType],r=n.branchAngles(t),c=r.length;for(var i=0;i<c;i++){const e=particles.addActiveParticle(8,t.x,t.y,t.i);if(!e)break;e.generation=t.generation+1,e.maxBranches=Math.max(0,t.maxBranches-1),e.branchSpacing=t.branchSpacing*n.branchSpacingFactor(t),e.nextBranch=e.branchSpacing,e.angle=r[i],e.setVelocity(t.velocity,e.angle),e.size=Math.max(t.size-1,2),e.treeType=t.treeType,n.initTreeParticle(e,t),a&&e.setColor(LEAF)}if(t.branches>=t.maxBranches)return void particles.makeParticleInactive(t);t.branchSpacing>45&&(t.branchSpacing*=.8),t.nextBranch=e+t.branchSpacing*(.35*Math.random()+.65)}}function CHARGED_NITRO_PARTICLE_INIT(t){t.setColor(FIRE),t.size=4,t.xVelocity=0,t.yVelocity=-100,t.minY=-1;const e=(3+Math.round(2*Math.random()))*width;for(var i=t.i;i>-1;i-=e)if(gameImagedata32[i]===WALL){t.minY=i/width;break}}function CHARGED_NITRO_PARTICLE_ACTION(t){offscreenParticleCtx.beginPath(),offscreenParticleCtx.lineWidth=t.size,offscreenParticleCtx.strokeStyle=t.rgbaColor,offscreenParticleCtx.lineCap="square",offscreenParticleCtx.moveTo(t.initX,t.initY),t.x+=t.xVelocity,t.y=Math.max(t.minY,t.y+t.yVelocity),offscreenParticleCtx.lineTo(t.x,t.y),offscreenParticleCtx.stroke(),(t.y<=t.minY||t.offCanvas())&&particles.makeParticleInactive(t)}function NUKE_PARTICLE_INIT(t){t.setColor(FIRE);const e=Math.max(width,height);t.size=e/4+Math.random()*e/8}function NUKE_PARTICLE_ACTION(t){t.drawCircle(t.size),t.actionIterations>4&&particles.makeParticleInactive(t)}class Particle{constructor(){this.type=0,this.initX=-1,this.initY=-1,this.x=-1,this.y=-1,this.i=-1,this.color=0,this.rgbaColor="rgba(0, 0, 0, 1)",this.velocity=0,this.angle=0,this.xVelocity=0,this.yVelocity=0,this.size=0,this.actionIterations=0,this.active=!1,this.next=null,this.prev=null,this.reinitialized=!1}setColor(t){Particle.warned_unpaintable_color||t in PAINTABLE_PARTICLE_COLORS||(console.log("Unpaintable particle color: "+t),Particle.warned_unpaintable_color=!0),this.color=t;const e=255&t,i=(65280&t)>>>8,a=(16711680&t)>>>16;this.rgbaColor="rgba("+e+","+i+","+a+", 1)"}setRandomColor(t){const e=Math.floor(Math.random()*t.length);this.setColor(t[e])}offCanvas(){const t=this.x,e=this.y;return t<0||t>MAX_X_IDX||e<0||e>MAX_Y_IDX}setVelocity(t,e){this.velocity=t,this.angle=e,this.xVelocity=t*Math.cos(e),this.yVelocity=t*Math.sin(e)}aboutToHit(){const t=this.size/2,e=Math.atan2(this.yVelocity,this.xVelocity),i=this.x+Math.cos(e)*t,a=this.y+Math.sin(e)*t,n=Math.round(i)+Math.round(a)*width;return n<0||n>MAX_IDX?BACKGROUND:gameImagedata32[n]}drawCircle(t){offscreenParticleCtx.beginPath(),offscreenParticleCtx.lineWidth=0,offscreenParticleCtx.fillStyle=this.rgbaColor,offscreenParticleCtx.arc(this.x,this.y,t,0,TWO_PI),offscreenParticleCtx.fill()}}Particle.warned_unpaintable_color=!1;class ParticleList{constructor(){this.activeHead=null,this.activeSize=0,this.inactiveHead=null,this.inactiveSize=0,this.particleCounts=new Uint32Array(__particleInit.length);for(var t=0;t<this.particleCounts.length;t++)this.particleCounts[t]=0}addActiveParticle(t,e,i,a){if(0===this.inactiveSize)return null;const n=this.inactiveHead;return this.inactiveHead=this.inactiveHead.next,this.inactiveHead&&(this.inactiveHead.prev=null),this.inactiveSize--,this.activeHead?(this.activeHead.prev=n,n.next=this.activeHead,n.prev=null,this.activeHead=n):(n.next=null,n.prev=null,this.activeHead=n),this.activeSize++,n.active=!0,n.reinitialized=!1,n.actionIterations=0,n.type=t,n.initX=e,n.initY=i,n.x=e,n.y=i,n.i=a,this.particleCounts[t]++,__particleInit[t](n),n}makeParticleInactive(t){t.active=!1,this.particleCounts[t.type]--,t.type=0,t.prev&&(t.prev.next=t.next),t.next&&(t.next.prev=t.prev),t===this.activeHead&&(this.activeHead=t.next),this.activeSize--,this.inactiveHead?(this.inactiveHead.prev=t,t.next=this.inactiveHead,t.prev=null,this.inactiveHead=t):(t.next=null,t.prev=null,this.inactiveHead=t),this.inactiveSize++}inactivateAll(){for(var t=this.activeHead;t;){const e=t.next;this.makeParticleInactive(t),t=e}}reinitializeParticle(t,e){if(!t.active)throw"Can only be used with active particles";this.particleCounts[t.type]--,this.particleCounts[e]++,t.type=e,t.reinitialized=!0,__particleInit[e](t)}particleActive(t){return this.particleCounts[t]>0}}const particles=new ParticleList,PAINTABLE_PARTICLE_COLORS={},MAGIC_COLORS=[];function initParticles(){if(__particleInit.length!==__particleActions.length)throw"Particle arrays must be same length";var t,e=MAX_NUM_PARTICLES;for(particles.inactiveHead=new Particle,particles.inactiveSize++,t=particles.inactiveHead,e--;e>0;){const i=new Particle;i.prev=t,t.next=i,particles.inactiveSize++,t=i,e--}offscreenParticleCanvas.width=width,offscreenParticleCanvas.height=height,PAINTABLE_PARTICLE_COLORS[FIRE]=null,PAINTABLE_PARTICLE_COLORS[WALL]=null,PAINTABLE_PARTICLE_COLORS[ROCK]=null,PAINTABLE_PARTICLE_COLORS[LAVA]=null,PAINTABLE_PARTICLE_COLORS[PLANT]=null,PAINTABLE_PARTICLE_COLORS[SPOUT]=null,PAINTABLE_PARTICLE_COLORS[WELL]=null,PAINTABLE_PARTICLE_COLORS[WAX]=null,PAINTABLE_PARTICLE_COLORS[ICE]=null,PAINTABLE_PARTICLE_COLORS[BRANCH]=null,PAINTABLE_PARTICLE_COLORS[LEAF]=null,Object.freeze(PAINTABLE_PARTICLE_COLORS),MAGIC_COLORS.push(WALL),MAGIC_COLORS.push(PLANT),MAGIC_COLORS.push(SPOUT),MAGIC_COLORS.push(WELL),MAGIC_COLORS.push(WAX),MAGIC_COLORS.push(ICE),Object.freeze(MAGIC_COLORS)}function updateParticles(){if(!particles.activeHead)return;const t=offscreenParticleCanvas.width,e=offscreenParticleCanvas.height;offscreenParticleCtx.beginPath(),offscreenParticleCtx.fillStyle="rgba(0, 0, 0, 1)",offscreenParticleCtx.rect(0,0,t,e),offscreenParticleCtx.fill();for(var i=particles.activeHead;i;){const t=i.next;i.actionIterations++,__particleActions[i.type](i),i=t}const a=offscreenParticleCtx.getImageData(0,0,t,e),n=new Uint32Array(a.data.buffer);var r,c,o=0;for(c=0;c!==e;c++){const e=o;for(r=0;r!==t;r++){const t=r+e,i=n[t];var s;if(4278190080!==i)if(i in PAINTABLE_PARTICLE_COLORS)gameImagedata32[t]=i;else(r-3>=0&&(s=n[t-3])in PAINTABLE_PARTICLE_COLORS||r+3<=MAX_X_IDX&&(s=n[t+3])in PAINTABLE_PARTICLE_COLORS||c-3>=0&&(s=n[t-3*width])in PAINTABLE_PARTICLE_COLORS||c+3<=MAX_Y_IDX&&(s=n[t+3*width])in PAINTABLE_PARTICLE_COLORS)&&(gameImagedata32[t]=s)}o+=t}}