47 lines
1.7 KiB
JavaScript
47 lines
1.7 KiB
JavaScript
// Sandboxels Gravity Block Mod
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// Adds a gravity block that pulls nearby particles
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elements.gravity_block = {
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color: "#4B0082",
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behavior: behaviors.WALL,
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category: "special",
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state: "solid",
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density: 10000,
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hardness: 1,
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tick: function(pixel) {
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var max_gravity_distance = 30;
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var gravity_strength = 1;
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for (var x = -max_gravity_distance; x <= max_gravity_distance; x++) {
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for (var y = -max_gravity_distance; y <= max_gravity_distance; y++) {
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var nx = pixel.x + x;
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var ny = pixel.y + y;
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if (!isEmpty(nx, ny, true)) {
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var npixel = pixelMap[nx][ny];
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if (npixel && npixel.element !== "gravity_block") {
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var dx = nx - pixel.x;
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var dy = ny - pixel.y;
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var distance = Math.sqrt(dx * dx + dy * dy);
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if (distance < 1) distance = 1;
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if (distance <= max_gravity_distance) {
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var force = (gravity_strength * 100) / (distance * distance);
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var angle = Math.atan2(dy, dx);
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var vx = -Math.cos(angle) * force;
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var vy = -Math.sin(angle) * force;
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// Add velocity toward the gravity block
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npixel.vx = (npixel.vx || 0) + vx;
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npixel.vy = (npixel.vy || 0) + vy;
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}
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}
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}
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}
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}
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}
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};
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console.log("Gravity Block Mod loaded! Place gravity blocks in the 'special' category to pull particles."); |