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path: root/src/crepe/system/AnimatorSystem.cpp
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#include "api/Animator.h"

#include "AnimatorSystem.h"
#include "ComponentManager.h"
#include <iostream>

using namespace crepe;

void AnimatorSystem::update() {
	ComponentManager & mgr = this->component_manager;

	RefVector<Animator> animations = mgr.get_components_by_type<Animator>();

	double elapsed_time = this->timer.get_current_time();

	for (Animator & a : animations) {
		if (!a.active) continue;
		
		Animator::Data & ctx = a.data;
		double frame_duration = 1.0f / ctx.fps;

		int cycle_end = (ctx.cycle_end == -1) ? ctx.row : cycle_end;
		int total_frames = cycle_end - ctx.cycle_start;

		int curr_frame = static_cast<int>(elapsed_time / frame_duration) % total_frames;

		ctx.curr_row = ctx.cycle_start + curr_frame;
		ctx.spritesheet.mask.x = ctx.curr_row * ctx.spritesheet.mask.w;
		ctx.spritesheet.mask.y = (ctx.curr_col * ctx.spritesheet.mask.h);
	
		std::cout << curr_frame << " " << total_frames << std::endl;
		if (!ctx.looping && curr_frame == 0) {
			a.active = false;
		}
	}
}