Ykkrosh
dd809f83e8
Simplify the format a bit. Use less <interleave> in the RNG so that error reports become understandable. Fixes #491. This was SVN commit r7478.
36 lines
910 B
JavaScript
36 lines
910 B
JavaScript
function MotionBallScripted() {}
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MotionBallScripted.prototype.Schema =
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"<a:component type='test'/><empty/>";
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MotionBallScripted.prototype.Init = function() {
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this.speedX = 0;
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this.speedZ = 0;
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};
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MotionBallScripted.prototype.OnUpdate = function(msg) {
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var dt = msg.turnLength;
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var cmpPos = Engine.QueryInterface(this.entity, IID_Position);
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var cmpTerrain = Engine.QueryInterface(SYSTEM_ENTITY, IID_Terrain);
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var pos = cmpPos.GetPosition();
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var normal = cmpTerrain.CalcNormal(pos.x, pos.z);
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var g = 10;
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var forceX = normal.x * g;
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var forceZ = normal.z * g;
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this.speedX += forceX * dt;
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this.speedZ += forceZ * dt;
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var drag = 0.5; // fractional decay per second
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this.speedX *= Math.pow(drag, dt);
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this.speedZ *= Math.pow(drag, dt);
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cmpPos.MoveTo(pos.x + this.speedX * dt, pos.z + this.speedZ * dt);
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};
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Engine.RegisterComponentType(IID_Motion, "MotionBallScripted", MotionBallScripted);
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