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/* |
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* Filename: system_movement.c |
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* Path: sources/System |
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* Created Date: Sunday, September 17th 2023, 7:25:32 am |
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* Author: osvegn |
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* |
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* Copyright (c) 2023 our_rpg |
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*/ |
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#include "systems.h" |
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#include "vector.h" |
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#include "world_entity.h" |
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#include "world_resource.h" |
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#include "components.h" |
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#include "resources.h" |
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#ifdef __linux__ |
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#include <sys/time.h> |
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#endif |
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int system_movement_constructor(system_t *system) |
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{ |
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system->type = S_MOVEMENT; |
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system->run = &system_movement; |
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system->active = true; |
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return 0; |
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} |
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static int system_movement(void *world) |
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{ |
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vector_t entities = {0}; |
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int rvalue = world_join_entities(world, &entities, 2, C_POSITION, C_VELOCITY); |
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ecs_vector2f_t position = {0}; |
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entity_t *e = 0; |
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component_t *c_position = 0; |
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component_t *c_velocity = 0; |
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resource_t *r = world_get_resource_by_type(world, R_GAME_CLOCK); |
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#ifdef __linux__ |
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struct timeval now, start; |
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start = *(struct timeval *)resource_game_clock_get(r); |
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gettimeofday(&now, NULL); |
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double time = ((now.tv_sec - start.tv_sec) * 1000.0f + (now.tv_usec - start.tv_usec) / 1000.0f); |
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#else |
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double time = 1.0f; |
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#endif |
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if (rvalue <= 0) |
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return 0; |
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for (unsigned int i = 0; i < entities.size(&entities); i++) { |
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e = *(entity_t **)entities.at(&entities, i); |
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c_position = entity_get_component(e, C_POSITION); |
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c_velocity = entity_get_component(e, C_VELOCITY); |
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position.x = (ecs_vector2f_t *){c_position->data}->x + (ecs_vector2i_t *){c_velocity->data}->x * time; |
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position.y = (ecs_vector2f_t *){c_position->data}->y + (ecs_vector2i_t *){c_velocity->data}->y * time; |
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component_position_set(c_position, &position); |
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} |
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return 0; |
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} |
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