76 lines
1.5 KiB
C
76 lines
1.5 KiB
C
#pragma once
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#include "util/tree.h"
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#include "util/vector.h"
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#include "types.h"
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#include <stdint.h>
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct _Entity Entity;
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extern double physics_Gravity;
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// Position component.
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//
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// If not exist, it's like it's at (0,0)
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typedef struct {
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Entity *super;
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Vec2 position;
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Vec2 velocity;
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} Component_Position;
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// Handler called when hitboxes are hit
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typedef void (*physics_HitHandler)(Entity *me, Entity *other, Vec2 triedDelta, void *data);
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// Box is relative to Position if exists
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// if not, Box is absolute
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//
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// Moving hitboxes only hits fixed hitboxes
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typedef struct {
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Entity *super;
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Box2 box;
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bool fixed;
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physics_HitHandler onHit, onHitBy;
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void *onHitData;
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} Component_Hitbox;
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// Returns the absolute version of the hitbox.
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Box2 physics_HitboxAbsolute(Component_Hitbox *hitbox);
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typedef struct _App App;
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// Physics manager
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typedef struct {
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App *super;
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// Every Position & Hitbox components
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tree_Tree *pos, *hit;
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} System_Physics;
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// Returns an empty physics system.
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System_Physics *physics_NewSystem(App *super);
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// Frees a physics system.
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void physics_DeleteSystem(System_Physics *sys);
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// Adds an entity.
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void physics_AddEntity(System_Physics *sys, Entity *e);
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// Deletes an entity.
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void physics_DeleteEntity(System_Physics *sys, uintptr_t id);
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// Advance is called on every frame.
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void physics_Advance(System_Physics *sys, Duration deltaTime);
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#ifdef __cplusplus
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}
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#endif
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