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/**********************************************************************************************
*
* [physac] raylib physics engine module - Basic functions to apply physics to 2D objects
*
* Copyright (c) 2015 Victor Fisac and Ramon Santamaria
*
* This software is provided "as-is", without any express or implied warranty. In no event
* will the authors be held liable for any damages arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose, including commercial
* applications, and to alter it and redistribute it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not claim that you
* wrote the original software. If you use this software in a product, an acknowledgment
* in the product documentation would be appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be misrepresented
* as being the original software.
*
* 3. This notice may not be removed or altered from any source distribution.
*
**********************************************************************************************/
#ifndef PHYSAC_H
#define PHYSAC_H
//----------------------------------------------------------------------------------
// Defines and Macros
//----------------------------------------------------------------------------------
// ...
//----------------------------------------------------------------------------------
// Types and Structures Definition
//----------------------------------------------------------------------------------
// Collider types
typedef enum { COLLIDER_CIRCLE, COLLIDER_RECTANGLE, COLLIDER_CAPSULE } ColliderType;
// Transform struct
typedef struct Transform {
Vector2 position;
float rotation;
Vector2 scale;
} Transform;
// Rigidbody struct
typedef struct Rigidbody {
bool enabled;
float mass;
Vector2 acceleration;
Vector2 velocity;
bool isGrounded;
bool isContact; // Avoid freeze player when touching floor
bool applyGravity;
float friction; // 0.0f to 1.0f
float bounciness; // 0.0f to 1.0f
} Rigidbody;
// Collider struct
typedef struct Collider {
bool enabled;
ColliderType type;
Rectangle bounds; // Used for COLLIDER_RECTANGLE and COLLIDER_CAPSULE
int radius; // Used for COLLIDER_CIRCLE and COLLIDER_CAPSULE
} Collider;
#ifdef __cplusplus
extern "C" { // Prevents name mangling of functions
#endif
//----------------------------------------------------------------------------------
// Module Functions Declarations
//----------------------------------------------------------------------------------
void InitPhysics(int maxPhysicElements); // Initialize all internal physics values
void UnloadPhysics(); // Unload physic elements arrays
void AddRigidbody(int index, Rigidbody rigidbody); // Initialize a new rigidbody with parameters to internal index slot
void AddCollider(int index, Collider collider); // Initialize a new Collider with parameters to internal index slot
void ApplyPhysics(int index, Vector2 *position); // Apply physics to internal rigidbody, physics calculations are applied to position pointer parameter
void SetRigidbodyEnabled(int index, bool state); // Set enabled state to a defined rigidbody
void SetRigidbodyVelocity(int index, Vector2 velocity); // Set velocity of rigidbody (without considering of mass value)
void SetRigidbodyAcceleration(int index, Vector2 acceleration); // Set acceleration of rigidbody (without considering of mass value)
void AddRigidbodyForce(int index, Vector2 force); // Set rigidbody force (considering mass value)
void AddForceAtPosition(Vector2 position, float intensity, float radius); // Add a force to all enabled rigidbodies at a position
void SetColliderEnabled(int index, bool state); // Set enabled state to a defined collider
Rigidbody GetRigidbody(int index); // Returns the internal rigidbody data defined by index parameter
Collider GetCollider(int index); // Returns the internal collider data defined by index parameter
#ifdef __cplusplus
}
#endif
#endif // PHYSAC_H
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