92 lines
1.9 KiB
Go
92 lines
1.9 KiB
Go
package main
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import (
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"fmt"
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"log"
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"runtime"
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"gb-player/gb"
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"github.com/veandco/go-sdl2/sdl"
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)
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func init() {
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runtime.LockOSThread()
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}
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func main() {
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cartridge := gb.Insert("rom.gb")
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fmt.Println("Title:", cartridge.Title)
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fmt.Println("Mapper:", cartridge.Mapper)
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fmt.Println("Licensee:", cartridge.Licensee)
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fmt.Println("Super Game Boy support?", cartridge.SGBSupport)
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fmt.Println("ROM size:", cartridge.ROMSize, "bytes")
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fmt.Println("RAM size:", cartridge.RAMSize)
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fmt.Println("Publication destination:", cartridge.Destination)
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fmt.Println("ROM version:", cartridge.Version)
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fmt.Println()
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cpu := gb.Reset()
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fmt.Println("Program counter:", cpu.PC)
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gb.Tick(&cpu)
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fmt.Println("Program counter:", cpu.PC)
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if err := sdl.Init(sdl.INIT_EVERYTHING); err != nil {
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log.Fatal(err)
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}
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defer sdl.Quit()
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window, err := sdl.CreateWindow(
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"GB Player",
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sdl.WINDOWPOS_UNDEFINED,
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sdl.WINDOWPOS_UNDEFINED,
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800, 600,
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sdl.WINDOW_SHOWN)
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if err != nil {
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panic(err)
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}
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defer window.Destroy()
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renderer, err := sdl.CreateRenderer(window, -1, 0)
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if err != nil {
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panic(err)
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}
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defer renderer.Destroy()
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renderer.RenderSetVSync(true)
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renderer.SetDrawColor(0x63, 0x94, 0xED, 0xff)
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var frameCount uint32 = 0
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var startTicks = sdl.GetTicks()
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running := true
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for running {
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// frameStartTime := sdl.GetTicks()
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for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
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switch event.(type) {
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case *sdl.QuitEvent:
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println("Quit")
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running = false
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break
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}
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}
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renderer.Clear()
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renderer.Present()
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// Calculate framerate
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frameCount++
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currentTicks := sdl.GetTicks()
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elapsed := currentTicks - startTicks
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if elapsed >= 1000 {
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fps := float32(frameCount) / (float32(elapsed) / 1000.0)
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fmt.Printf("FPS: %.2f\n", fps)
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// Reset counters
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frameCount = 0
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startTicks = currentTicks
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}
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}
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}
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