GOingTunneling/profiler.go

package main

import (
	"fmt"
	"github.com/veandco/go-sdl2/sdl"
)

func profileSection(section func()) uint64 {
	start := sdl.GetTicks64()
	section()
	end := sdl.GetTicks64()
	return end - start
}

func logProfilingInfo(handleEventsTime, renderTime, scaleTime, frameTime, frameCount uint64) {
	floatFrame := float64(frameCount)
	fmt.Printf("Average handleEvents time: %f ms\n", float64(handleEventsTime)/floatFrame)
	fmt.Printf("Average render time: %f ms\n", float64(renderTime)/floatFrame)
	fmt.Printf("Average scaling time: %f ms\n", float64(scaleTime)/floatFrame)
	fmt.Printf("Average frame time: %f ms\n", float64(frameTime)/floatFrame)
	fmt.Print("\n")
}

func logMapProfilingInfo(renderTime, scaleTime, frameTime, frameCount uint64) {
	floatFrame := float64(frameCount)
	fmt.Printf("Average map render time: %f ms\n", float64(renderTime)/floatFrame)
	fmt.Printf("Average map scaling time: %f ms\n", float64(scaleTime)/floatFrame)
	fmt.Printf("Average full render time: %f ms\n", float64(frameTime)/floatFrame)
	fmt.Print("\n")
}

func resetProfilingCounters(handleEventsTime, renderTime, scaleTime, frameTime *uint64, frameCount *uint64) {
	*handleEventsTime = 0
	*renderTime = 0
	*scaleTime = 0
	*frameTime = 0
	*frameCount = 0
}

func resetMapProfilingCounters(renderTime, scaleTime, frameTime *uint64, frameCount *uint64) {
	*renderTime = 0
	*scaleTime = 0
	*frameTime = 0
	*frameCount = 0
}

func enforceFrameRate(frameStart uint64, targetFPS int) {
	frameDuration := 1000 / targetFPS
	elapsed := sdl.GetTicks64() - frameStart
	if delay := frameDuration - int(elapsed); delay > 0 {
		sdl.Delay(uint32(delay))
	}
}