step

examples/models/box_collisions/main.go

@@ -0,0 +1,110 @@
+package main
+
+import (
+	"github.com/gen2brain/raylib-go/raylib"
+)
+
+func main() {
+	screenWidth := int32(800)
+	screenHeight := int32(450)
+
+	rl.InitWindow(screenWidth, screenHeight, "raylib [models] example - box collisions")
+
+	camera := rl.Camera{}
+	camera.Position = rl.NewVector3(0.0, 10.0, 10.0)
+	camera.Target = rl.NewVector3(0.0, 0.0, 0.0)
+	camera.Up = rl.NewVector3(0.0, 1.0, 0.0)
+	camera.Fovy = 45.0
+	camera.Projection = rl.CameraPerspective
+
+	playerPosition := rl.NewVector3(0.0, 1.0, 2.0)
+	playerSize := rl.NewVector3(1.0, 2.0, 1.0)
+	playerColor := rl.Green
+
+	enemyBoxPos := rl.NewVector3(-4.0, 1.0, 0.0)
+	enemyBoxSize := rl.NewVector3(2.0, 2.0, 2.0)
+
+	enemySpherePos := rl.NewVector3(4.0, 0.0, 0.0)
+	enemySphereSize := float32(1.5)
+
+	collision := false
+
+	rl.SetTargetFPS(60)
+
+	for !rl.WindowShouldClose() {
+		// Update
+
+		// Move player
+		if rl.IsKeyDown(rl.KeyRight) {
+			playerPosition.X += 0.2
+		} else if rl.IsKeyDown(rl.KeyLeft) {
+			playerPosition.X -= 0.2
+		} else if rl.IsKeyDown(rl.KeyDown) {
+			playerPosition.Z += 0.2
+		} else if rl.IsKeyDown(rl.KeyUp) {
+			playerPosition.Z -= 0.2
+		}
+
+		collision = false
+
+		// Check collisions player vs enemy-box
+		if rl.CheckCollisionBoxes(
+			rl.NewBoundingBox(
+				rl.NewVector3(playerPosition.X-playerSize.X/2, playerPosition.Y-playerSize.Y/2, playerPosition.Z-playerSize.Z/2),
+				rl.NewVector3(playerPosition.X+playerSize.X/2, playerPosition.Y+playerSize.Y/2, playerPosition.Z+playerSize.Z/2)),
+			rl.NewBoundingBox(
+				rl.NewVector3(enemyBoxPos.X-enemyBoxSize.X/2, enemyBoxPos.Y-enemyBoxSize.Y/2, enemyBoxPos.Z-enemyBoxSize.Z/2),
+				rl.NewVector3(enemyBoxPos.X+enemyBoxSize.X/2, enemyBoxPos.Y+enemyBoxSize.Y/2, enemyBoxPos.Z+enemyBoxSize.Z/2)),
+		) {
+			collision = true
+		}
+
+		// Check collisions player vs enemy-sphere
+		if rl.CheckCollisionBoxSphere(
+			rl.NewBoundingBox(
+				rl.NewVector3(playerPosition.X-playerSize.X/2, playerPosition.Y-playerSize.Y/2, playerPosition.Z-playerSize.Z/2),
+				rl.NewVector3(playerPosition.X+playerSize.X/2, playerPosition.Y+playerSize.Y/2, playerPosition.Z+playerSize.Z/2)),
+			enemySpherePos,
+			enemySphereSize,
+		) {
+			collision = true
+		}
+
+		if collision {
+			playerColor = rl.Red
+		} else {
+			playerColor = rl.Green
+		}
+
+		// Draw
+
+		rl.BeginDrawing()
+
+		rl.ClearBackground(rl.RayWhite)
+
+		rl.BeginMode3D(camera)
+
+		// Draw enemy-box
+		rl.DrawCube(enemyBoxPos, enemyBoxSize.X, enemyBoxSize.Y, enemyBoxSize.Z, rl.Gray)
+		rl.DrawCubeWires(enemyBoxPos, enemyBoxSize.X, enemyBoxSize.Y, enemyBoxSize.Z, rl.DarkGray)
+
+		// Draw enemy-sphere
+		rl.DrawSphere(enemySpherePos, enemySphereSize, rl.Gray)
+		rl.DrawSphereWires(enemySpherePos, enemySphereSize, 16, 16, rl.DarkGray)
+
+		// Draw player
+		rl.DrawCubeV(playerPosition, playerSize, playerColor)
+
+		rl.DrawGrid(10, 1.0) // Draw a grid
+
+		rl.EndMode3D()
+
+		rl.DrawText("Move player with cursors to collide", 220, 40, 20, rl.Gray)
+
+		rl.DrawFPS(10, 10)
+
+		rl.EndDrawing()
+	}
+
+	rl.CloseWindow()
+}