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Externalize the freecam

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This commit is contained in:
Dane Johnson 2021-03-05 12:03:32 -06:00
parent 1cf4895743
commit 6f082083a0
4 changed files with 123 additions and 31 deletions
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40
demo/exampleworld/main.lua
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@ -1,25 +1,19 @@
package.path = package.path .. ";../scripts/?.lua"
local freecam = require("freecam")
local min = math.min
local max = math.max
local cube
local physics_ball
local character
local ball
local camera
local die_cube
local total = 0.0
local vx = 0.0
local vy = 0.0
local vz = 0.0
local character_move_vec = couch.Vector3(0.0, 0.0, 0.0)
local ballvy = -1.0
local cam_rot_x = 0.0
local cam_rot_y = 0.0
local SPEED = 30
local WHITE = couch.Vector3(1.0, 1.0, 1.0)
@ -31,10 +25,9 @@ local light
function init()
local material
local transform
camera = couch.Camera()
camera:MakeCurrent()
camera:Translate(couch.Vector3(0.0, 0.0, 10.0))
freecam.init_camera()
freecam.camera:Translate(couch.Vector3(0.0, 0.0, 10.0))
local light = couch.DirectionalLight()
light:SetDirection(couch.Vector3(0.0, -1.0, -1.0))
@ -144,20 +137,8 @@ end
function update(delta)
total = total + delta
local move_vec = couch.Vector3()
local camera_transform = camera:GetTransform()
move_vec = camera_transform.position + camera_transform:Forward() * delta * vz * SPEED
move_vec = move_vec + camera_transform:Right() * delta * vx * SPEED
move_vec = move_vec + camera_transform:Up() * delta * vy * SPEED
camera_transform.position = move_vec
camera_transform.rotation.y = camera_transform.rotation.y - cam_rot_x * delta
cam_rot_x = 0.0
camera_transform.rotation.x = camera_transform.rotation.x - cam_rot_y * delta
camera_transform.rotation.x = min(max(camera_transform.rotation.x, -3.14 / 2.0), 3.14 / 2.0)
cam_rot_y = 0.0
camera:SetTransform(camera_transform)
freecam.update_camera(delta)
local loc = ball:GetTransform().position
if loc.y > 4.0 then
@ -211,9 +192,7 @@ function action_dir(key, action, pos, neg, curr)
end
function onkey(key, code, action, mod)
vz = action_dir(key, action, couch.KEY_W, couch.KEY_S, vz)
vx = action_dir(key, action, couch.KEY_D, couch.KEY_A, vx)
vy = action_dir(key, action, couch.KEY_SPACE, couch.KEY_LEFT_CONTROL, vy)
freecam.onkey(key, code, action, mod)
if key == couch.KEY_J and action == couch.ACTION_PRESS then
physics_ball:ApplyImpulse(couch.Vector3(0.0, 1.0, 0.0) * 10)
@ -223,8 +202,7 @@ function onkey(key, code, action, mod)
end
function onmousemotion(_, _, relx, rely)
cam_rot_x = relx
cam_rot_y = rely
freecam.onmousemotion(relx, rely)
end
function make_ground()

12
demo/resources/inverted_cube.mtl Normal file
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@ -0,0 +1,12 @@
# Blender MTL File: 'None'
# Material Count: 1
newmtl Material
Ns 323.999994
Ka 1.000000 1.000000 1.000000
Kd 0.800000 0.800000 0.800000
Ks 0.500000 0.500000 0.500000
Ke 0.000000 0.000000 0.000000
Ni 1.450000
d 1.000000
illum 2

40
demo/resources/inverted_cube.obj Normal file
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@ -0,0 +1,40 @@
# Blender v2.92.0 OBJ File: ''
# www.blender.org
mtllib inverted_cube.mtl
o Cube
v 1.000000 1.000000 -1.000000
v 1.000000 -1.000000 -1.000000
v 1.000000 1.000000 1.000000
v 1.000000 -1.000000 1.000000
v -1.000000 1.000000 -1.000000
v -1.000000 -1.000000 -1.000000
v -1.000000 1.000000 1.000000
v -1.000000 -1.000000 1.000000
vt 0.625000 0.500000
vt 0.625000 0.750000
vt 0.875000 0.750000
vt 0.875000 0.500000
vt 0.375000 0.750000
vt 0.375000 1.000000
vt 0.625000 1.000000
vt 0.375000 0.000000
vt 0.375000 0.250000
vt 0.625000 0.250000
vt 0.625000 0.000000
vt 0.125000 0.500000
vt 0.125000 0.750000
vt 0.375000 0.500000
vn 0.0000 -1.0000 0.0000
vn 0.0000 0.0000 -1.0000
vn 1.0000 0.0000 0.0000
vn 0.0000 1.0000 0.0000
vn -1.0000 0.0000 0.0000
vn 0.0000 0.0000 1.0000
usemtl Material
s off
f 1/1/1 3/2/1 7/3/1 5/4/1
f 4/5/2 8/6/2 7/7/2 3/2/2
f 8/8/3 6/9/3 5/10/3 7/11/3
f 6/12/4 8/13/4 4/5/4 2/14/4
f 2/14/5 4/5/5 3/2/5 1/1/5
f 6/9/6 2/14/6 1/1/6 5/10/6

62
demo/scripts/freecam.lua Normal file
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@ -0,0 +1,62 @@
local freecam = {}
local min = math.min
local max = math.max
freecam.camera = nil
freecam.speed = 30
local vx = 0.0
local vy = 0.0
local vz = 0.0
local cam_rot_x = 0.0
local cam_rot_y = 0.0
function freecam.init_camera()
freecam.camera = couch.Camera()
freecam.camera:MakeCurrent()
end
function freecam.update_camera(delta)
local camera_transform = freecam.camera:GetTransform()
local move_vec = couch.Vector3()
move_vec = camera_transform.position + camera_transform:Forward() * delta * vz * freecam.speed
move_vec = move_vec + camera_transform:Right() * delta * vx * freecam.speed
move_vec = move_vec + camera_transform:Up() * delta * vy * freecam.speed
camera_transform.position = move_vec
camera_transform.rotation.y = camera_transform.rotation.y - cam_rot_x * delta
cam_rot_x = 0.0
camera_transform.rotation.x = camera_transform.rotation.x - cam_rot_y * delta
camera_transform.rotation.x = min(max(camera_transform.rotation.x, -3.14 / 2.0), 3.13 / 2.0)
cam_rot_y = 0.0
freecam.camera:SetTransform(camera_transform)
end
function action_dir(key, action, pos, neg, curr)
if key == pos and action == couch.ACTION_PRESS then
return 1.0
elseif key == neg and action == couch.ACTION_PRESS then
return -1.0
elseif (key == pos or key == neg) and action == couch.ACTION_RELEASE then
return 0.0
else
return curr
end
end
function freecam.onkey(key, code, action, mod)
vz = action_dir(key, action, couch.KEY_W, couch.KEY_S, vz)
vx = action_dir(key, action, couch.KEY_D, couch.KEY_A, vx)
vy = action_dir(key, action, couch.KEY_SPACE, couch.KEY_LEFT_CONTROL, vy)
end
function freecam.onmousemotion(relx, rely)
cam_rot_x = relx
cam_rot_y = rely
end
return freecam