Rename Box2D folder to box2d

src/libraries/box2d/b2_time_step.h

@@ -0,0 +1,73 @@
+// MIT License
+
+// Copyright (c) 2019 Erin Catto
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+#ifndef B2_TIME_STEP_H
+#define B2_TIME_STEP_H
+
+#include "b2_math.h"
+
+/// Profiling data. Times are in milliseconds.
+struct b2Profile
+{
+	float step;
+	float collide;
+	float solve;
+	float solveInit;
+	float solveVelocity;
+	float solvePosition;
+	float broadphase;
+	float solveTOI;
+};
+
+/// This is an internal structure.
+struct b2TimeStep
+{
+	float dt;			// time step
+	float inv_dt;		// inverse time step (0 if dt == 0).
+	float dtRatio;	// dt * inv_dt0
+	int32 velocityIterations;
+	int32 positionIterations;
+	bool warmStarting;
+};
+
+/// This is an internal structure.
+struct b2Position
+{
+	b2Vec2 c;
+	float a;
+};
+
+/// This is an internal structure.
+struct b2Velocity
+{
+	b2Vec2 v;
+	float w;
+};
+
+/// Solver Data
+struct b2SolverData
+{
+	b2TimeStep step;
+	b2Position* positions;
+	b2Velocity* velocities;
+};
+
+#endif