127 lines
3.5 KiB
Go
127 lines
3.5 KiB
Go
package main
|
|
|
|
import (
|
|
"github.com/gen2brain/raylib-go/raylib"
|
|
)
|
|
|
|
var (
|
|
MaxBuildings int = 100
|
|
)
|
|
|
|
func main() {
|
|
screenWidth := int32(800)
|
|
screenHeight := int32(450)
|
|
|
|
raylib.InitWindow(screenWidth, screenHeight, "raylib [core] example - 2d camera")
|
|
|
|
player := raylib.NewRectangle(400, 280, 40, 40)
|
|
|
|
buildings := make([]raylib.Rectangle, MaxBuildings)
|
|
buildColors := make([]raylib.Color, MaxBuildings)
|
|
|
|
spacing := int32(0)
|
|
|
|
for i := 0; i < MaxBuildings; i++ {
|
|
r := raylib.Rectangle{}
|
|
r.Width = raylib.GetRandomValue(50, 200)
|
|
r.Height = raylib.GetRandomValue(100, 800)
|
|
r.Y = screenHeight - 130 - r.Height
|
|
r.X = -6000 + spacing
|
|
|
|
spacing += r.Width
|
|
|
|
c := raylib.NewColor(byte(raylib.GetRandomValue(200, 240)), byte(raylib.GetRandomValue(200, 240)), byte(raylib.GetRandomValue(200, 250)), byte(255))
|
|
|
|
buildings[i] = r
|
|
buildColors[i] = c
|
|
}
|
|
|
|
camera := raylib.Camera2D{}
|
|
camera.Target = raylib.NewVector2(float32(player.X+20), float32(player.Y+20))
|
|
camera.Offset = raylib.NewVector2(0, 0)
|
|
camera.Rotation = 0.0
|
|
camera.Zoom = 1.0
|
|
|
|
raylib.SetTargetFPS(30)
|
|
|
|
for !raylib.WindowShouldClose() {
|
|
if raylib.IsKeyDown(raylib.KeyRight) {
|
|
player.X += 2 // Player movement
|
|
camera.Offset.X -= 2 // Camera displacement with player movement
|
|
} else if raylib.IsKeyDown(raylib.KeyLeft) {
|
|
player.X -= 2 // Player movement
|
|
camera.Offset.X += 2 // Camera displacement with player movement
|
|
}
|
|
|
|
// Camera target follows player
|
|
camera.Target = raylib.NewVector2(float32(player.X+20), float32(player.Y+20))
|
|
|
|
// Camera rotation controls
|
|
if raylib.IsKeyDown(raylib.KeyA) {
|
|
camera.Rotation--
|
|
} else if raylib.IsKeyDown(raylib.KeyS) {
|
|
camera.Rotation++
|
|
}
|
|
|
|
// Limit camera rotation to 80 degrees (-40 to 40)
|
|
if camera.Rotation > 40 {
|
|
camera.Rotation = 40
|
|
} else if camera.Rotation < -40 {
|
|
camera.Rotation = -40
|
|
}
|
|
|
|
// Camera zoom controls
|
|
camera.Zoom += float32(raylib.GetMouseWheelMove()) * 0.05
|
|
|
|
if camera.Zoom > 3.0 {
|
|
camera.Zoom = 3.0
|
|
} else if camera.Zoom < 0.1 {
|
|
camera.Zoom = 0.1
|
|
}
|
|
|
|
// Camera reset (zoom and rotation)
|
|
if raylib.IsKeyPressed(raylib.KeyR) {
|
|
camera.Zoom = 1.0
|
|
camera.Rotation = 0.0
|
|
}
|
|
|
|
raylib.BeginDrawing()
|
|
|
|
raylib.ClearBackground(raylib.RayWhite)
|
|
|
|
raylib.Begin2dMode(camera)
|
|
|
|
raylib.DrawRectangle(-6000, 320, 13000, 8000, raylib.DarkGray)
|
|
|
|
for i := 0; i < MaxBuildings; i++ {
|
|
raylib.DrawRectangleRec(buildings[i], buildColors[i])
|
|
}
|
|
|
|
raylib.DrawRectangleRec(player, raylib.Red)
|
|
|
|
raylib.DrawRectangle(int32(camera.Target.X), -500, 1, screenHeight*4, raylib.Green)
|
|
raylib.DrawRectangle(-500, int32(camera.Target.Y), screenWidth*4, 1, raylib.Green)
|
|
|
|
raylib.End2dMode()
|
|
|
|
raylib.DrawText("SCREEN AREA", 640, 10, 20, raylib.Red)
|
|
|
|
raylib.DrawRectangle(0, 0, screenWidth, 5, raylib.Red)
|
|
raylib.DrawRectangle(0, 5, 5, screenHeight-10, raylib.Red)
|
|
raylib.DrawRectangle(screenWidth-5, 5, 5, screenHeight-10, raylib.Red)
|
|
raylib.DrawRectangle(0, screenHeight-5, screenWidth, 5, raylib.Red)
|
|
|
|
raylib.DrawRectangle(10, 10, 250, 113, raylib.Fade(raylib.SkyBlue, 0.5))
|
|
raylib.DrawRectangleLines(10, 10, 250, 113, raylib.Blue)
|
|
|
|
raylib.DrawText("Free 2d camera controls:", 20, 20, 10, raylib.Black)
|
|
raylib.DrawText("- Right/Left to move Offset", 40, 40, 10, raylib.DarkGray)
|
|
raylib.DrawText("- Mouse Wheel to Zoom in-out", 40, 60, 10, raylib.DarkGray)
|
|
raylib.DrawText("- A / S to Rotate", 40, 80, 10, raylib.DarkGray)
|
|
raylib.DrawText("- R to reset Zoom and Rotation", 40, 100, 10, raylib.DarkGray)
|
|
|
|
raylib.EndDrawing()
|
|
}
|
|
|
|
raylib.CloseWindow()
|
|
}
|