mage-engine
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A WebGL Javascript Game Engine, built on top of THREE.js and many other libraries.
679 lines (665 loc) • 30.5 kB
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<h1><a href="../index.html">All files</a> / <a href="index.html">physics</a> utils.js</h1>
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<div class='fl pad1y space-right2'>
<span class="strong">42.46% </span>
<span class="quiet">Statements</span>
<span class='fraction'>31/73</span>
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<span class="strong">11.11% </span>
<span class="quiet">Branches</span>
<span class='fraction'>3/27</span>
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<div class='fl pad1y space-right2'>
<span class="strong">25% </span>
<span class="quiet">Functions</span>
<span class='fraction'>5/20</span>
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<div class='fl pad1y space-right2'>
<span class="strong">42.85% </span>
<span class="quiet">Lines</span>
<span class='fraction'>30/70</span>
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<pre><table class="coverage">
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">import { Matrix4, Vector3 } from "three";
import { PHYSICS_EVENTS } from "./messages";
import { getSphereVolume } from "../lib/math";
import { BOUNDINGBOX_NOT_AVAILABLE } from "../lib/messages";
import { DEFAULT_QUATERNION, DEFAULT_POSITION } from "./constants";
import { COLLIDER_TYPES } from "./constants";
export const DEFAULT_DESCRIPTION = {
mass: 1,
friction: 1,
quaternion: DEFAULT_QUATERNION,
position: DEFAULT_POSITION,
};
const DEFAULT_BOX_DESCRIPTION = {
...DEFAULT_DESCRIPTION,
width: 2,
length: 2,
height: 2,
collider: COLLIDER_TYPES.BOX,
};
const DEFAULT_SPHERE_DESCRIPTION = {
...DEFAULT_DESCRIPTION,
radius: 2,
collider: COLLIDER_TYPES.SPHERE,
};
export const mapColliderTypeToAddEvent = type =>
({
[COLLIDER_TYPES.BOX]: PHYSICS_EVENTS.ADD.BOX,
[COLLIDER_TYPES.VEHICLE]: PHYSICS_EVENTS.ADD.VEHICLE,
[COLLIDER_TYPES.PLAYER]: PHYSICS_EVENTS.ADD.PLAYER,
[COLLIDER_TYPES.SPHERE]: PHYSICS_EVENTS.ADD.SPHERE,
}[type] || PHYSICS_EVENTS.ADD.BOX);
export const extractBoundingBox = <span class="fstat-no" title="function not covered" >bo</span>dy => {
<span class="cstat-no" title="statement not covered" > body.geometry.computeBoundingBox();</span>
<span class="cstat-no" title="statement not covered" > return body.geometry.boundingBox;</span>
};
export const extractBiggestBoundingBox = <span class="fstat-no" title="function not covered" >bo</span>dy => {
const boxes = <span class="cstat-no" title="statement not covered" >[];</span>
<span class="cstat-no" title="statement not covered" > body?.traverse?.(<span class="fstat-no" title="function not covered" >ch</span>ild => {</span>
<span class="cstat-no" title="statement not covered" > if (child.geometry) {</span>
<span class="cstat-no" title="statement not covered" > boxes.push(extractBoundingBox(child));</span>
}
});
// sorting by volume
<span class="cstat-no" title="statement not covered" > return boxes.sort(<span class="fstat-no" title="function not covered" >(b</span>oxA, boxB) => {</span>
const vectorA = <span class="cstat-no" title="statement not covered" >new Vector3();</span>
const vectorB = <span class="cstat-no" title="statement not covered" >new Vector3();</span>
<span class="cstat-no" title="statement not covered" > boxA.getSize(vectorA);</span>
<span class="cstat-no" title="statement not covered" > boxB.getSize(vectorB);</span>
<span class="cstat-no" title="statement not covered" > return vectorB.x * vectorB.y * vectorB.z - vectorA.x * vectorA.y * vectorA.z;</span>
})[0];
};
export const extractBoundingSphere = <span class="fstat-no" title="function not covered" >bo</span>dy => {
<span class="cstat-no" title="statement not covered" > body.geometry.computeBoundingSphere();</span>
<span class="cstat-no" title="statement not covered" > return body.geometry.boundingSphere;</span>
};
export const extractBiggestBoundingSphere = <span class="fstat-no" title="function not covered" >bo</span>dy => {
<span class="cstat-no" title="statement not covered" > if (!body || typeof body.traverse !== 'function') {</span>
<span class="cstat-no" title="statement not covered" > console.warn('[Mage] extractBiggestBoundingSphere received invalid body');</span>
<span class="cstat-no" title="statement not covered" > return null;</span>
}
const spheres = <span class="cstat-no" title="statement not covered" >[];</span>
<span class="cstat-no" title="statement not covered" > body.traverse(<span class="fstat-no" title="function not covered" >ch</span>ild => {</span>
<span class="cstat-no" title="statement not covered" > if (child.geometry) {</span>
<span class="cstat-no" title="statement not covered" > spheres.push(extractBoundingBox(child));</span>
}
});
// sorting by volume
<span class="cstat-no" title="statement not covered" > return spheres.sort(</span>
<span class="fstat-no" title="function not covered" > (s</span>phereA, sphereB) => <span class="cstat-no" title="statement not covered" >getSphereVolume(sphereB.radius) - getSphereVolume(sphereA.radius),</span>
)[0];
};
export const parseBoundingBoxSize = (boundingBox = {}) => {
try {
const size = new Vector3();
boundingBox.getSize(size);
const { x: sizeX, y: sizeY, z: sizeZ } = size;
return {
x: sizeX,
y: sizeY,
z: sizeZ,
};
} catch (e) {
console.log(BOUNDINGBOX_NOT_AVAILABLE);
return {
x: 1,
y: 1,
z: 1,
};
}
};
export const extractPositionAndQuaternion = element => {
const { x, y, z } = element.getPosition();
const quaternion = element.getQuaternion();
return {
position: { x, y, z },
quaternion: { x: quaternion.x, y: quaternion.y, z: quaternion.z, w: quaternion.w },
};
};
export const extractBoxDescription = <span class="fstat-no" title="function not covered" >el</span>ement => {
const scale = <span class="cstat-no" title="statement not covered" >element.getScale();</span>
const size = <span class="cstat-no" title="statement not covered" >parseBoundingBoxSize(element.boundingBox);</span>
<span class="cstat-no" title="statement not covered" > return {</span>
width: size.x * scale.x,
height: size.y * scale.y,
length: size.z * scale.z,
size,
...extractPositionAndQuaternion(element),
};
};
export const extractSphereDescription = <span class="fstat-no" title="function not covered" >el</span>ement => {
const radius = <span class="cstat-no" title="statement not covered" >element.boundingSphere.radius;</span>
<span class="cstat-no" title="statement not covered" > return {</span>
radius,
...extractPositionAndQuaternion(element),
};
};
export const getBoxDescriptionForElement = <span class="fstat-no" title="function not covered" >el</span>ement => (<span class="cstat-no" title="statement not covered" >{</span>
...DEFAULT_BOX_DESCRIPTION,
...extractBoxDescription(element),
});
export const getSphereDescriptionForElement = <span class="fstat-no" title="function not covered" >el</span>ement => (<span class="cstat-no" title="statement not covered" >{</span>
...DEFAULT_SPHERE_DESCRIPTION,
...extractSphereDescription(element),
});
export const mapColliderTypeToDescription = <span class="fstat-no" title="function not covered" >(c</span>olliderType = <span class="branch-0 cbranch-no" title="branch not covered" >COLLIDER_TYPES.BOX)</span> =>
(<span class="cstat-no" title="statement not covered" >{</span>
[COLLIDER_TYPES.BOX]: getBoxDescriptionForElement,
[COLLIDER_TYPES.SPHERE]: getSphereDescriptionForElement,
}[colliderType] || getBoxDescriptionForElement);
export const iterateGeometries = (function () {
const inverse = new Matrix4();
return <span class="fstat-no" title="function not covered" >fu</span>nction (root, { includeInvisible }, cb) {
const scale = <span class="cstat-no" title="statement not covered" >new Vector3();</span>
<span class="cstat-no" title="statement not covered" > inverse.getInverse(root.matrixWorld);</span>
<span class="cstat-no" title="statement not covered" > scale.setFromMatrixScale(root.matrixWorld);</span>
<span class="cstat-no" title="statement not covered" > root.traverse(<span class="fstat-no" title="function not covered" >me</span>sh => {</span>
const transform = <span class="cstat-no" title="statement not covered" >new Matrix4();</span>
<span class="cstat-no" title="statement not covered" > if (</span>
mesh.isMesh &&
(includeInvisible || (mesh.el && mesh.el.object3D.visible) || mesh.visible)
) {
<span class="cstat-no" title="statement not covered" > if (mesh === root) {</span>
<span class="cstat-no" title="statement not covered" > transform.identity();</span>
} else {
<span class="cstat-no" title="statement not covered" > mesh.updateWorldMatrix(true);</span>
<span class="cstat-no" title="statement not covered" > transform.multiplyMatrices(inverse, mesh.matrixWorld);</span>
}
// todo: might want to return null xform if this is the root so that callers can avoid multiplying
// things by the identity matrix
<span class="cstat-no" title="statement not covered" > cb(</span>
mesh.geometry.isBufferGeometry
? mesh.geometry.attributes.position.array
: mesh.geometry.vertices,
transform.elements,
mesh.geometry.index ? mesh.geometry.index.array : null,
);
}
});
};
})();
export const convertAmmoVector = ({ x, y, z }) => ({
x: z,
y,
z: x,
});
</pre></td></tr></table></pre>
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