mirror of https://github.com/axmolengine/axmol.git
54 lines
2.3 KiB
C
54 lines
2.3 KiB
C
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/* Copyright (c) 2007 Scott Lembcke
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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struct cpDampedSpring;
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typedef cpFloat (*cpDampedSpringForceFunc)(struct cpConstraint *spring, cpFloat dist);
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const cpConstraintClass *cpDampedSpringGetClass();
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typedef struct cpDampedSpring {
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cpConstraint constraint;
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cpVect anchr1, anchr2;
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cpFloat restLength;
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cpFloat stiffness;
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cpFloat damping;
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cpDampedSpringForceFunc springForceFunc;
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cpFloat dt;
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cpFloat target_vrn;
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cpVect r1, r2;
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cpFloat nMass;
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cpVect n;
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} cpDampedSpring;
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cpDampedSpring *cpDampedSpringAlloc(void);
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cpDampedSpring *cpDampedSpringInit(cpDampedSpring *joint, cpBody *a, cpBody *b, cpVect anchr1, cpVect anchr2, cpFloat restLength, cpFloat stiffness, cpFloat damping);
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cpConstraint *cpDampedSpringNew(cpBody *a, cpBody *b, cpVect anchr1, cpVect anchr2, cpFloat restLength, cpFloat stiffness, cpFloat damping);
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CP_DefineConstraintProperty(cpDampedSpring, cpVect, anchr1, Anchr1);
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CP_DefineConstraintProperty(cpDampedSpring, cpVect, anchr2, Anchr2);
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CP_DefineConstraintProperty(cpDampedSpring, cpFloat, restLength, RestLength);
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CP_DefineConstraintProperty(cpDampedSpring, cpFloat, stiffness, Stiffness);
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CP_DefineConstraintProperty(cpDampedSpring, cpFloat, damping, Damping);
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CP_DefineConstraintProperty(cpDampedSpring, cpDampedSpringForceFunc, springForceFunc, SpringForceFunc);
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