sshpong/internal/renderer/renderer.go
2024-09-26 19:49:59 -06:00

111 lines
3.5 KiB
Go

package renderer
import (
"fmt"
"os"
"sshpong/internal/ansii"
"sshpong/internal/pong"
"strings"
"time"
)
var (
targetFps float64 = 60.0
targetFpMilli float64 = float64(targetFps) / 1000.0
millisecondTimeFrame float64 = float64(1 / targetFpMilli)
quit chan bool
userInput chan rune
playerX int = 10
playerY int = 10
)
func Render(state pong.GameState) {
// drawScreen(state)
fmt.Print("\033c")
fmt.Println("Player 1", state.Player1.Pos.X, state.Player1.Pos.Y)
fmt.Println("Player 2", state.Player2.Pos.X, state.Player2.Pos.Y)
}
func writeCheckerBoard(height int, width int, builder *strings.Builder) {
for i := 0; i < height; i++ {
for j := 0; j < width; j++ {
if i%2 == 0 {
if j%2 == 0 {
builder.WriteString("█")
} else {
builder.WriteString(" ")
}
} else {
if j%2 == 0 {
builder.WriteString(" ")
} else {
builder.WriteString("█")
}
}
}
}
}
func drawScreen(state pong.GameState) {
// width := 100
// height := 50
var builder = strings.Builder{}
builder.WriteString(string(ansii.Screen.ClearScreen))
ansii.DrawBox(&builder, ansii.Offset{X: int(state.Player1.Pos.X), Y: int(state.Player1.Pos.Y)}, 5, 1, ansii.Colors.Cyan)
ansii.DrawPixelStyle(&builder, ansii.Offset{X: int(state.Player1.Pos.X), Y: int(state.Player1.Pos.Y)}, ansii.Colors.Purple)
ansii.DrawPixelStyle(&builder, ansii.Offset{X: int(state.Player1.Pos.X), Y: int(state.Player1.Pos.Y) + 5}, ansii.Colors.Purple)
ansii.DrawBox(&builder, ansii.Offset{X: int(state.Player2.Pos.X), Y: int(state.Player2.Pos.Y)}, 5, 1, ansii.Colors.Cyan)
ansii.DrawPixelStyle(&builder, ansii.Offset{X: int(state.Player2.Pos.X), Y: int(state.Player2.Pos.Y)}, ansii.Colors.Purple)
ansii.DrawPixelStyle(&builder, ansii.Offset{X: int(state.Player2.Pos.X), Y: int(state.Player2.Pos.Y) + 5}, ansii.Colors.Purple)
// Quit instructions
// builder.WriteString(string(ansii.Screen.PlaceCursor(ansii.Offset{X: 0, Y: height})))
// builder.WriteString("q to quit")
os.Stdout.WriteString(builder.String())
}
func drawFrameStats(frameNum int, frameTimeMs float64) {
width, height := ansii.GetTermSize()
var spareTimeMilli = millisecondTimeFrame - frameTimeMs
os.Stdout.WriteString(string(ansii.Screen.PlaceCursor(ansii.Offset{X: width - 12, Y: height - 2})))
os.Stdout.WriteString(fmt.Sprintf("Frame #: %d", frameNum))
os.Stdout.WriteString(string(ansii.Screen.PlaceCursor(ansii.Offset{X: width - 19, Y: height - 1})))
os.Stdout.WriteString(fmt.Sprintf("Frame Time: %.4fms", frameTimeMs))
os.Stdout.WriteString(string(ansii.Screen.PlaceCursor(ansii.Offset{X: width - 20, Y: height})))
os.Stdout.WriteString(fmt.Sprintf("Spare Time: %.4fms", spareTimeMilli))
}
func handleInput(rawInput rune) {
action := ProcessInput(rawInput)
width, height := ansii.GetTermSize()
switch action {
case Quit:
fmt.Println("Quitting...")
close(quit)
case Left, LeftArrow:
playerX = max(playerX-1, 0)
case Right, RightArrow:
playerX = min(playerX+1, width)
case Up, UpArrow:
playerY = max(playerY-1, 0)
case Down, DownArrow:
playerY = min(playerY+1, height)
case Unknown:
default:
os.Stdout.WriteString(string(ansii.Screen.PlaceCursor(ansii.Offset{X: 0, Y: height - 2})))
os.Stdout.WriteString("Unrecognized Input: " + string(action))
close(quit)
}
}
func waitForFpsLock(startMs float64) {
for {
var nowMs = float64(time.Now().UnixNano()) / 1_000_000.0
if nowMs-startMs >= millisecondTimeFrame {
break
}
}
}