123 lines
2.3 KiB
Go
123 lines
2.3 KiB
Go
package main
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import (
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"log"
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stdmath "math"
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"time"
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"github.com/pnx/go-raytracer/graphics"
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"github.com/pnx/go-raytracer/math"
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"github.com/pnx/go-raytracer/render"
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"github.com/pnx/go-raytracer/world"
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"github.com/veandco/go-sdl2/sdl"
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)
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type DebugMode int
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const (
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DebugMode_NONE DebugMode = iota
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DebugMode_MINIMAP
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DebugMode_PALETTE
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)
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var (
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gfxContext *graphics.Context
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player Player
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level *world.Level
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startOfFrame time.Time
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debugMode DebugMode
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)
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func loadLevel(newLevel *world.Level) {
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level = newLevel
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// Set player start position
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start := level.PlayerStart()
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player.Position = math.Position{
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X: (float64(start.X) + 0.5) * world.TileSize,
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Y: (float64(start.Y) + 0.5) * world.TileSize,
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}
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}
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func update() bool {
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for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
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switch ev := event.(type) {
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case *sdl.QuitEvent:
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return true
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case *sdl.KeyboardEvent:
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if ev.Type == sdl.KEYDOWN {
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switch ev.Keysym.Sym {
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case sdl.K_p:
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if debugMode != DebugMode_PALETTE {
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debugMode = DebugMode_PALETTE
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} else {
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debugMode = DebugMode_NONE
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}
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case sdl.K_m:
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if debugMode != DebugMode_MINIMAP {
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debugMode = DebugMode_MINIMAP
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} else {
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debugMode = DebugMode_NONE
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}
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case sdl.K_ESCAPE:
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return true
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}
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}
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}
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}
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keys := sdl.GetKeyboardState()
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if keys[sdl.SCANCODE_UP] != 0 {
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player.MoveForward(level)
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}
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if keys[sdl.SCANCODE_DOWN] != 0 {
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player.MoveBackward(level)
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}
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if keys[sdl.SCANCODE_LEFT] != 0 {
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player.RotateLeft()
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}
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if keys[sdl.SCANCODE_RIGHT] != 0 {
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player.RotateRight()
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}
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return false
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}
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func main() {
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var err error
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gfxContext, err = graphics.Init("Go Raycaster", 1024, 768)
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if err != nil {
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log.Fatal(err)
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}
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player = Player{
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MoveSpd: 2,
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RotSpd: 0.05,
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}
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loadLevel(&world.Level1)
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for {
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startOfFrame := time.Now()
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if update() {
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break
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}
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render.DrawScene(gfxContext, player.Transform, level)
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if debugMode == DebugMode_MINIMAP {
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render.DrawMiniMap(gfxContext, player.Transform, level)
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}
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if debugMode == DebugMode_PALETTE {
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render.DrawPalette(gfxContext, 16, 16)
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}
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gfxContext.Sync()
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elapsed := time.Since(startOfFrame)
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sdl.Delay(uint32(stdmath.Max(16-float64(elapsed.Milliseconds()), 1)))
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}
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gfxContext.Exit()
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}
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