0c6f1dd8cf
forward declarations are simplified with decl_typeclass_impl impl_Typeclass_for now instead only define static inline impl_Typeclass_for can be used to achieve the old behaviour
42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
#ifndef _update_entity_h
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#define _update_entity_h
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#include "drop.h"
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#include "mirror.h"
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#include "typeclass_helpers.h"
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typedef struct {
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void (*const update)(void* self, float dt);
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void (*const start)(void* self);
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void (*const draw)(void* self);
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long (*const get_depth)(void* self);
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} IEntityBehaviour;
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typedef struct {
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void* data;
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IEntityBehaviour const* tc;
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IDrop const* drop;
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IMirror const* mirror;
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} BehaviourEntity;
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#define impl_BehaviourEntity_for(T, start_f, update_f, draw_f, get_depth_f)\
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BehaviourEntity T##_as_BehaviourEntity(T* x) {\
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TC_FN_TYPECHECK(void, start_f, T*);\
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TC_FN_TYPECHECK(void, update_f, T*, float);\
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TC_FN_TYPECHECK(void, draw_f, T*);\
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TC_FN_TYPECHECK(long, get_depth_f, T*);\
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static IEntityBehaviour const tc = {\
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.update = (void(*const)(void*, float)) update_f,\
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.start = (void(*const)(void*)) start_f,\
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.draw = (void(*const)(void*)) draw_f,\
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.get_depth=(long(*const)(void*)) get_depth_f,\
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};\
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TC_FN_TYPECHECK(Drop, T##_as_Drop, T*);\
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TC_FN_TYPECHECK(Mirror, T##_as_Mirror, T*);\
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IDrop const* drop = T##_as_Drop(x).tc;\
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IMirror const* mirror = T##_as_Mirror(x).tc;\
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return (BehaviourEntity){.data = x, .tc = &tc, .drop = drop, .mirror = mirror};\
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}\
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#endif // !_update_entity_h
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