我试图在Desmume中使用freelook，但是lua脚本在其中一个版本中不断抛出错误。该脚本看起来正确，可以构建吗？以前它可以在旧版PC上的同一版本上工作，也许不兼容？
joyID = -1; --Joystick ID to use. The script will attempt to find a suitable joystick, but you can manually set this if you wish
yaw = 0.0;
pitch = 0.0;
pitchoffs = 0.0; --used to correct for the initial pitch of the camera
xpos = 0.0; --coordinates in a virtual 3D space
ypos = 0.0; --^^^
zpos = 0.0; --^^^
matAdjustment = {1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1};
movscale = 0.3;
rotscale = 3.0;
cooldown = 0;
function MatrixMult4x4(m1, m2) --sorta copied/inspired from some lua matrix library
local mtx = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}
for i=1,4 do
for j=1,4 do
local num = 0
for n=1,4 do
num = num + m1[(i-1)*4+n] * m2[(n-1)*4+j]
mtx[(i-1)*4+j] = num
end
end
end
return mtx;
end
function Rotate(angle,x,y,z)
local s = math.sin(math.rad(angle));
local c = math.cos(math.rad(angle));
return {(1-c)*x*x+c, (1-c)*y*x-s*z, (1-c)*z*x+s*y, 0,
(1-c)*x*y+s*z, (1-c)*y*y+c, (1-c)*z*y-s*x, 0,
(1-c)*x*z-s*y, (1-c)*y*z+s*x, (1-c)*z*z+c, 0,
0, 0, 0, 1};
end
function vecrotx(angle, vx, vy, vz) --used for pitch correction in the functions below
return vx,
vy * math.cos(math.rad(angle)) - vz * math.sin(math.rad(angle)),
vy * math.sin(math.rad(angle)) + vz * math.cos(math.rad(angle));
end
function MoveForward(l) --sorta based off https://www.gamedev.net/forums/topic/415144-get-forward-right-up-vectors-from-pitch-yaw-roll/
local fX = math.sin(math.rad(yaw)) * math.cos(math.rad(pitch+pitchoffs));
local fY = -math.sin(math.rad(pitch+pitchoffs));
local fZ = -math.cos(math.rad(yaw)) * math.cos(math.rad(pitch+pitchoffs));
fX, fY, fZ = vecrotx(pitchoffs, fX, fY, fZ);
local mag = math.sqrt(fX*fX + fY*fY + fZ*fZ);
fX = fX / mag; fY = fY / mag; fZ = fZ / mag;
fX = fX * l; fY = fY * l; fZ = fZ * l;
xpos = xpos - fX; ypos = ypos + fY; zpos = zpos + fZ;
end
function MoveUp(l)
local fX = math.sin(math.rad(yaw)) * math.cos(math.rad(pitch+pitchoffs+90));
local fY = -math.sin(math.rad(pitch+pitchoffs+90));
local fZ = -math.cos(math.rad(yaw)) * math.cos(math.rad(pitch+pitchoffs+90));
fX, fY, fZ = vecrotx(pitchoffs, fX, fY, fZ);
local mag = math.sqrt(fX*fX + fY*fY + fZ*fZ);
fX = fX / mag; fY = fY / mag; fZ = fZ / mag;
fX = fX * l; fY = fY * l; fZ = fZ * l;
xpos = xpos - fX; ypos = ypos + fY; zpos = zpos + fZ;
end
function MoveRight(l)
local fX = math.sin(math.rad(yaw+90));
local fY = 0;
local fZ = -math.cos(math.rad(yaw+90));
fX, fY, fZ = vecrotx(pitchoffs, fX, fY, fZ);
local mag = math.sqrt(fX*fX + fY*fY + fZ*fZ);
fX = fX / mag; fY = fY / mag; fZ = fZ / mag;
fX = fX * l; fY = fY * l; fZ = fZ * l;
xpos = xpos - fX; ypos = ypos + fY; zpos = zpos + fZ;
end
function on3d()
emu.set3dtransform(2,matAdjustment);
end
emu.register3devent(on3d);
emu.set3dtransform(1,nil);
if joyID == -1 then
for i = 0, 15 do
c = controller.get(i);
if c.x and c.y and c.z and c.u and c.r then --simple check that only looks for all the needed axes
joyID = i;
print("Found suitable joystick, id " .. i);
break;
end
end
else
print("Using manually set joystick, id " .. joyID);
end
if joyID == -1 then
print("No suitable joystick found!");
while true do
emu.frameadvance();
end
end
while true do
local key = controller.get(joyID)
scalemult = 1;
if key["5"] then --Left bumper
scalemult = 0.1;
elseif key["6"] then --Right bumper
scalemult = 10;
end
if key.up and cooldown==0 then --Dpad
cooldown = 10;
movscale = movscale + (0.1 * scalemult);
print("Movement scale: " .. movscale);
end
if key.down and cooldown==0 then --Dpad
cooldown = 10;
movscale = movscale - (0.1 * scalemult);
print("Movement scale: " .. movscale);
end
if key.right and cooldown==0 then --Dpad
cooldown = 10;
rotscale = rotscale + (0.1 * scalemult);
print("Rotation scale: " .. rotscale);
end
if key.left and cooldown==0 then --Dpad
cooldown = 10;
rotscale = rotscale - (0.1 * scalemult);
print("Rotation scale: " .. rotscale);
end
if(math.abs(key.x)>0.25) then --Left Stick
MoveRight(-key.x * movscale);
end
if(math.abs(key.y)>0.25) then --Left Stick
MoveForward(key.y * movscale);
end
if(math.abs(key.z)>0.25) then --Triggers
MoveUp(-key.z * movscale);
end
if(math.abs(key.u)>0.25) then --Right Stick
yaw = (yaw + (key.u * rotscale)) % 360;
end
if(math.abs(key.r)>0.25) then --Right Stick
pitch = (pitch + (key.r * rotscale)) % 360;
end
if key["1"] and cooldown==0 then --A button
cooldown = 20;
yaw = 0.0;
pitch = 0.0;
pitchoffs = 0.0;
xpos = 0.0;
ypos = 0.0;
zpos = 0.0;
movscale = 1.0;
rotscale = 1.0;
print("Reset everything");
end
if key["2"] and cooldown==0 then --B button
cooldown = 20;
yaw = 0.0;
pitch = 0.0;
pitchoffs = 0.0;
print("Reset rotations");
end
if key["3"] then --X button
pitchoffs = -pitch;
end
if key["4"] and cooldown==0 then --Y button
cooldown = 20;
movscale = 1.0;
rotscale = 1.0;
print("Movement/rotation scales reset");
end
local tmp = Rotate(-yaw, 0.0, math.cos(math.rad(pitchoffs)), math.sin(math.rad(pitchoffs)));
tmp = MatrixMult4x4(tmp, Rotate(-pitch, 1.0, 0.0, 0.0));
local translation = {1,0,0,0,0,1,0,0,0,0,1,0,xpos,ypos,zpos,1};
matAdjustment = MatrixMult4x4(translation, tmp);
if cooldown>0 then cooldown=cooldown-1 end
emu.frameadvance();
end
在第91和109行抛出错误，指定'controller'为nil值。
此外，我注意到在以后的版本中，矩阵被弄乱了，所以我不能在以后的版本中使用此功能。我将不得不坚持这个特殊的构建。