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node_modules/phaser/plugins/impact/Solver.js

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+/**
+ * @author       Richard Davey <rich@photonstorm.com>
+ * @copyright    2020 Photon Storm Ltd.
+ * @license      {@link https://opensource.org/licenses/MIT|MIT License}
+ */
+
+var COLLIDES = require('./COLLIDES');
+var Events = require('./events');
+var SeparateX = require('./SeparateX');
+var SeparateY = require('./SeparateY');
+
+/**
+ * Impact Physics Solver
+ *
+ * @function Phaser.Physics.Impact.Solver
+ * @fires Phaser.Physics.Impact.Events#COLLIDE
+ * @since 3.0.0
+ *
+ * @param {Phaser.Physics.Impact.World} world - The Impact simulation to run the solver in.
+ * @param {Phaser.Physics.Impact.Body} bodyA - The first body in the collision.
+ * @param {Phaser.Physics.Impact.Body} bodyB - The second body in the collision.
+ */
+var Solver = function (world, bodyA, bodyB)
+{
+    var weak = null;
+
+    if (bodyA.collides === COLLIDES.LITE || bodyB.collides === COLLIDES.FIXED)
+    {
+        weak = bodyA;
+    }
+    else if (bodyB.collides === COLLIDES.LITE || bodyA.collides === COLLIDES.FIXED)
+    {
+        weak = bodyB;
+    }
+
+    if (bodyA.last.x + bodyA.size.x > bodyB.last.x && bodyA.last.x < bodyB.last.x + bodyB.size.x)
+    {
+        if (bodyA.last.y < bodyB.last.y)
+        {
+            SeparateY(world, bodyA, bodyB, weak);
+        }
+        else
+        {
+            SeparateY(world, bodyB, bodyA, weak);
+        }
+
+        bodyA.collideWith(bodyB, 'y');
+        bodyB.collideWith(bodyA, 'y');
+
+        world.emit(Events.COLLIDE, bodyA, bodyB, 'y');
+    }
+    else if (bodyA.last.y + bodyA.size.y > bodyB.last.y && bodyA.last.y < bodyB.last.y + bodyB.size.y)
+    {
+        if (bodyA.last.x < bodyB.last.x)
+        {
+            SeparateX(world, bodyA, bodyB, weak);
+        }
+        else
+        {
+            SeparateX(world, bodyB, bodyA, weak);
+        }
+
+        bodyA.collideWith(bodyB, 'x');
+        bodyB.collideWith(bodyA, 'x');
+
+        world.emit(Events.COLLIDE, bodyA, bodyB, 'x');
+    }
+};
+
+module.exports = Solver;