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ALTERNATIVE physics

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This commit is contained in:
Erkki Seppälä 2014-10-19 13:13:47 +03:00
parent b5794d5543
commit e4fe8fd5b0
2 changed files with 75 additions and 52 deletions
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122
entities/plane.lua
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@ -56,16 +56,18 @@ local lift = function(angle)
return 1.68429 * math.exp(-math.pow(angle / math.pi * 180.0 -17.3801, 2.0) / (2.0 * math.pow(15.0, 2.0)))
end
local fwd_frict_coeff = 1.0
local nor_frict_coeff = 2.0
local tail_frict_coeff = 10.4
local turn_speed = 2.0
local wing_lift = 0.1 * 3
local fwd_frict_coeff = 0.5
local nor_frict_coeff = 0.5
local tail_frict_coeff = 0.5
local tail_area = 5.0
local turn_speed = 1.0
local wing_lift = 0.5
local accel_speed = 400.0
local decel_speed = 400.0
local max_motorPower = ENGINE_MAX
local plane_area = 10.0
local head_area = 1.0
local plane_area = 10.0
local motor_speed_ratio = 100.0
local explosionFrames = AnimationFrames("resources/graphics/explosion-%04d.png", 36, 15, true)
@ -74,7 +76,7 @@ Plane = Class{
frames = {},
motorPower = 400,
motorPower = INITIAL_ENGINE_SPEED,
debugVectors = {},
@ -103,13 +105,15 @@ Plane = Class{
self.body:setAngle(math.atan2(yDir, xDir))
-- self.body:setMassData(self.xsize / 2, self.ysize / 2, 440 * PIXELS_PER_METER, -1.0)
-- self.body:setMassData(self.xsize / 2, 0, 430, 158194)
self.body:setMassData(7, 5, 800, 558194.140625)
self.body:setAngularDamping(0.1)
self.fixture:setFriction(0)
self.angle = 0
--x 16 y 17.200000762939 mass 3520 inertia 1942476.875
--x 0 y 0 mass 860.00006103516 inertia 158194.140625
-- local x, y, mass, inertia = self.body:getMassData()
local x, y, mass, inertia = self.body:getMassData()
print("x", x, "y", y, "mass", mass, "inertia", inertia)
for frame = 0,35 do
@ -133,6 +137,7 @@ Plane = Class{
die = function(self)
self.health = 0
self.machinegun:stopShooting()
Animation(self.body:getX(), self.body:getY(), self.level, explosionFrames)
self:getOwner():setPlane(nil)
self:delete()
@ -161,10 +166,12 @@ Plane = Class{
end;
shoot = function(self, down)
if down then
self.machinegun:startShooting()
else
self.machinegun:stopShooting()
if self.health > 0 then
if down then
self.machinegun:startShooting()
else
self.machinegun:stopShooting()
end
end
end;
@ -174,7 +181,9 @@ Plane = Class{
end;
update = function(self, dt)
self.debugVectors = {}
local mass_x, mass_y, mass, inertia = self.body:getMassData()
self.debug = {}
PhysicsEntity.update(self, dt)
self.machinegun:update(dt)
@ -220,35 +229,43 @@ Plane = Class{
local fwd_vel = VectorLight.dot(vel_x, vel_y, fwd_x, fwd_y)
local normal_vel = VectorLight.dot(vel_x, vel_y, normal_x, normal_y)
-- print("fwd_vel", fwd_vel, "normal_vel", normal_vel, "vel_x", vel_x, "vel_y", vel_y, "normal_x", normal_x, "normal_y", normal_y)
table.insert(self.debugVectors, DebugVector("vel", self.body:getX(), self.body:getY(), vel_x, vel_y))
table.insert(self.debugVectors, DebugVector("fwd", self.body:getX(), self.body:getY(), fwd_x, fwd_y))
table.insert(self.debugVectors, DebugVector("normal", self.body:getX(), self.body:getY(), normal_x, normal_y))
table.insert(self.debug, DebugVector("vel", self.body:getX(), self.body:getY(), vel_x, vel_y))
table.insert(self.debug, DebugVector("fwd", self.body:getX(), self.body:getY(), fwd_x, fwd_y))
table.insert(self.debug, DebugVector("normal", self.body:getX(), self.body:getY(), normal_x, normal_y))
local tail_speed = self.body:getAngularVelocity() * math.pi * 2.0 * self.xsize / 2.0
local tail_speed = self.body:getAngularVelocity() * math.pi * 2.0 * self.xsize / 2.0 / PIXELS_PER_METER
-- print("angular velocity", self.body:getAngularVelocity())
local tail_vel = to_base(0, tail_speed) -- hmm?! not tail_speed, 0?
local abs_tail_vel_x, abs_tail_vel_y = VectorLight.add(vel_x, vel_y, tail_vel[1][1], tail_vel[2][1])
table.insert(self.debugVectors, DebugVector("tail", self.body:getX(), self.body:getY(), tail_vel[1][1], tail_vel[2][1]))
-- table.insert(self.debug, DebugVector("tail", self.body:getX(), self.body:getY(), tail_vel[1][1], tail_vel[2][1]))
--print("absolute tail veloicty: ", abs_tail_vel_x, abs_tail_vel_y)
local head_angle = self.angle
local rel_force = function(label, force_x, force_y, rel_at_x, rel_at_y)
-- rdx, rdy = VectorLight.add(rdx, rdy, self.body:getX(), self.body:getY())
local base_force = to_base(force_x, force_y)
local base_rel_at = to_base(rel_at_x, rel_at_y)
base_rel_at_x, base_rel_at_y = VectorLight.add(base_rel_at[1][1], base_rel_at[2][1], self.body:getX(), self.body:getY())
self.body:applyForce(base_force[1][1], base_force[2][1], base_rel_at_x, base_rel_at_y)
if label == "turn" or
label == "lift" or
label == "hddrag" or
label == "airdrag" or
label == "tf" or
label == "motor" then
-- rdx, rdy = VectorLight.add(rdx, rdy, self.body:getX(), self.body:getY())
local base_force = to_base(force_x, force_y)
local base_rel_at = to_base(rel_at_x, rel_at_y)
base_rel_at_x, base_rel_at_y = VectorLight.add(base_rel_at[1][1], base_rel_at[2][1], self.body:getX(), self.body:getY())
self.body:applyForce(base_force[1][1], base_force[2][1], base_rel_at_x, base_rel_at_y)
at_x, at_y = VectorLight.add(base_rel_at_x, base_rel_at_y, base_force[1][1], base_force[2][1])
at_x, at_y = VectorLight.add(base_rel_at_x, base_rel_at_y, base_force[1][1], base_force[2][1])
--print(at_x, at_y)
-- print("base matrix", Matrix.tostring(base))
-- print("force", force_x, force_y)
-- print("force after transformation", Matrix.tostring(to_base(force_x, force_y)))
-- print("base_force", base_force[1][1], base_force[2][1])
-- print("base_force'", Matrix.tostring(base_force))
--print(at_x, at_y)
-- print("base matrix", Matrix.tostring(base))
-- print("force", force_x, force_y)
-- print("force after transformation", Matrix.tostring(to_base(force_x, force_y)))
-- print("base_force", base_force[1][1], base_force[2][1])
-- print("base_force'", Matrix.tostring(base_force))
table.insert(self.debugVectors, DebugVector(label, base_rel_at_x, base_rel_at_y, base_force[1][1], base_force[2][1]))
table.insert(self.debug, DebugVector(label, base_rel_at_x, base_rel_at_y, base_force[1][1], base_force[2][1]))
end
end
local speed_angle
@ -267,14 +284,16 @@ Plane = Class{
air_wing_angle = tmp
end
local lift_coeff = lift(air_wing_angle)
local lift_coeff = lift(-air_wing_angle)
-- print("lift coeff: ", lift_coeff)
-- motor
local dx, dy = VectorLight.rotate(self.angle, self.motorPower * 10.0 * PIXELS_PER_METER, 0)
self.body:applyForce(dx, dy);
-- table.insert(self.debugVectors, DebugVector(self.body:getX(), self.body:getY(), dx, dy))
rel_force("motor",
self.motorPower * motor_speed_ratio * PIXELS_PER_METER, 0,
mass_x + 0.2, mass_y + 0.4)
--self.body:applyForce(dx, dy);
-- table.insert(self.debug, DebugVector(self.body:getX(), self.body:getY(), dx, dy))
-- (* self#add_force "fwddrag" *)
-- (* (Gg.V2.smul (fwd_frict_coeff *. fwd_vel ** 2.0 *. head_area) (V.unit (negate vel))) *)
@ -285,14 +304,13 @@ Plane = Class{
-- Air friction (and drag?) opposes movement towards plane velocity normal also
-- hdd drag
local hddrag_x, hddrag_y = VectorLight.mul(nor_frict_coeff * math.pow(normal_vel, 2.0) * plane_area * sign(normal_vel), 0, -1.0)
local b = to_base(-1.0, 0.0)
rel_force("hddrag", hddrag_x, hddrag_y, -self.xsize / 2, 0);
-- self.body:applyForce(hddrag_x, hddrag_y, b[1][1], b[2][1])
rel_force("hddrag", hddrag_x, hddrag_y, mass_x, mass_y);
local lift_x, lift_y = VectorLight.mul(wing_lift * math.pow(fwd_vel, 2.0) * lift_coeff, 0, -1)
rel_force("lift", lift_x, lift_y, self.xsize * 0.8, 0)
rel_force("lift", lift_x, lift_y, mass_x, mass_y)
local tail_frict = tail_frict_coeff * math.pow(tail_speed, 2.0) * sign(tail_speed)
local tail_frict = tail_area * tail_frict_coeff * math.pow(normal_vel, 2.0) * -sign(normal_vel)
-- print("tail_speed", tail_speed)
rel_force("tf", 0, tail_frict, -self.xsize / 2, 0)
-- if self.turningCcw then
@ -301,21 +319,28 @@ Plane = Class{
-- dx, dy = VectorLight.rotate(self.angle, 0, -50000)
-- end
if self.turningCcw then
dx, dy = 0, -turn_speed
elseif self.turningCw then
dx, dy = 0, turn_speed
elseif self.turningCw then
dx, dy = 0, -turn_speed
end
if self.turningCw or self.turningCcw then
dx, dy = VectorLight.mul(turn_speed * math.pow(fwd_vel, 2.0) * sign(fwd_vel), dx, dy)
dx, dy = VectorLight.mul(turn_speed * math.pow(fwd_vel, 2.0) -- * sign(fwd_vel)
, dx, dy)
-- dx, dy = VectorLight.mul(turn_speed * 10000 -- * sign(fwd_vel)
-- , dx, dy)
-- print("dx", dx, "dy", dy, "tail_speed", tail_speed)
-- self.body:applyForce(dx, dy, self.body:getX() + rdx, self.body:getY() + rdy)
rel_force("turn", dx, dy, -0.4 * self.xsize, 0);
end
-- print(dx, dy)
-- table.insert(self.debugVectors, DebugVector(self.x + width / 2, self.y + height / 2, 0, -100))
-- table.insert(self.debugVectors, DebugVector(self.x, self.y, -100, 0))
-- table.insert(self.debugVectors, DebugVector(self.x + 55, self.y + 10, dx, dy)
-- table.insert(self.debug, DebugVector(self.x + width / 2, self.y + height / 2, 0, -100))
-- table.insert(self.debug, DebugVector(self.x, self.y, -100, 0))
-- table.insert(self.debug, DebugVector(self.x + 55, self.y + 10, dx, dy)
local xy = to_base(mass_x, mass_y)
local x, y = VectorLight.add(xy[1][1], xy[2][1], self.body:getX(), self.body:getY())
table.insert(self.debug, DebugCircle("mc", x, y))
end;
draw = function(self)
@ -334,11 +359,8 @@ Plane = Class{
end
love.graphics.pop()
drawDebug(self.debugVectors)
if self.powerupmode ~= nil then
self.powerupmode:draw(self.body:getX(), self.body:getY())
end
drawDebug(self.debug)
end
end;

5
settings.lua
View file

@ -33,9 +33,10 @@ SCOREBOARD_WIDTH = 250
SCOREBOARD_HEIGHT = 125
SCOREBOARD_MARGIN = 20
ENGINE_MAX = 1000
ENGINE_MAX = 500
INITIAL_PLANE_SPEED = 1000
INITIAL_PLANE_SPEED = 500
INITIAL_ENGINE_SPEED = 300
HIT_SCORE = 1
KILL_SCORE = 10