1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
import kotlinx.browser.document
private const val MOVE_SPEED = 0.5
private const val ROTATE_SPEED = 5
data class RaycastContext(
val renderer: Renderer,
val camera: Camera,
val map: Map,
val minimap: Minimap
)
fun main() {
val renderer = Renderer(640, 480)
val camera = Camera(
fov = 60,
xPos = 2.0,
yPos = 2.0,
rotation = 90.0
)
val map = Map()
val minimap = Minimap(map)
val context = RaycastContext(renderer, camera, map, minimap)
val raycaster = Raycaster()
document.onkeydown = {
when (it.code) {
"KeyW" -> {
console.log("key w")
val cameraCos = kotlin.math.cos(toRadians(camera.rotation)) * MOVE_SPEED
val cameraSin = kotlin.math.sin(toRadians(camera.rotation)) * MOVE_SPEED
camera.xPos += cameraCos
camera.yPos += cameraSin
}
"KeyS" -> {
console.log("key s")
val cameraCos = kotlin.math.cos(toRadians(camera.rotation)) * MOVE_SPEED
val cameraSin = kotlin.math.sin(toRadians(camera.rotation)) * MOVE_SPEED
camera.xPos -= cameraCos
camera.yPos -= cameraSin
}
"KeyA" -> {
console.log("key a")
camera.rotation -= ROTATE_SPEED
}
"KeyD" -> {
console.log("key d")
camera.rotation += ROTATE_SPEED
}
}
paint(raycaster, context)
console.log("camera x:${camera.xPos} y:${camera.yPos} r: ${camera.rotation}")
}
paint(raycaster, context)
}
fun paint(raycaster: Raycaster, raycastContext: RaycastContext) {
raycastContext.renderer.clear()
raycaster.raycast(raycastContext)
raycastContext.minimap.update(raycastContext.camera)
}
fun toRadians(degrees: Double): Double {
return degrees * kotlin.math.PI / 180
}
|