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working on bowling demo

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git-svn-id: svn://anubis/anaglym/trunk@210 99a6e188-d820-4881-8870-2d33a10e2619
This commit is contained in:
Josh Holtrop 2009-12-13 22:11:32 +00:00
parent 2aee3daba6
commit c2a5ee2bfa
1 changed files with 58 additions and 9 deletions
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67
lib/demo/bowling.lua
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@ -67,7 +67,7 @@ function init_event()
reference_pin:setPosition(0, 0, lane_bottom - maxz - 0.1)
reference_ball = ag.createSphere(0.3)
reference_ball:setColor(0.7, 0.1, 0.9)
reference_ball:setMass(50)
reference_ball:setMass(10)
reference_ball:setPosition(0, -2, -1.5)
resetPins()
setupStars()
@ -76,10 +76,15 @@ function init_event()
target_x = 0
game_state = "waiting"
last_update_time = ag.elapsedTime()
mouse_moved = false
setCamera()
end
function setCamera()
ag.setCamera(position_x, -10, 5, target_x, 20, 0)
end
function update_event()
ag.setCamera(position_x, -10, 5, target_x, 20, 0)
local now = ag.elapsedTime()
if (ag.isKeyDown("a") or ag.isKeyDown("left")) then
position_x = position_x - (now - last_update_time) / 300
@ -94,17 +99,21 @@ function update_event()
end
end
last_update_time = now
setCamera()
ag.callList(stars)
end
function mouse_motion_event(x, y, xrel, yrel)
target_x = target_x + xrel / 100
if (target_x < -2) then
target_x = -2
elseif (target_x > 2) then
target_x = 2
if (mouse_moved) then
target_x = target_x + xrel / 100
if (target_x < -2) then
target_x = -2
elseif (target_x > 2) then
target_x = 2
end
end
mouse_moved = true
end
function drawFrameScore(width, height, frame, fs)
@ -148,9 +157,12 @@ end
function update_overlay_event(width, height)
drawScore(width, height)
if (game_state == "get_power" or game_state == "launched") then
if (game_state == "get_power" or game_state == "get_accuracy" or game_state == "launched") then
drawPowerBar(width, height)
end
if (game_state == "get_accuracy" or game_state == "launched") then
drawAccuracyBar(width, height)
end
end
function mousebutton_down_event(button, x, y)
@ -158,6 +170,8 @@ function mousebutton_down_event(button, x, y)
if (game_state == "waiting") then
getPower()
elseif (game_state == "get_power") then
getAccuracy()
elseif (game_state == "get_accuracy") then
launchBall()
end
end
@ -170,11 +184,26 @@ function getPower()
power_direction = 1
end
function getAccuracy()
game_state = "get_accuracy"
accuracy = 0
accuracy_last_time = ag.elapsedTime()
accuracy_direction = 1
end
function launchBall()
game_state = "launched"
launch_time = ag.elapsedTime()
bowling_ball = reference_ball:clone()
bowling_ball:setPosition(position_x, -10, 4)
bowling_ball:setPosition(position_x, -10, 1.31)
local fx = target_x + accuracy - position_x
local fy = 30 -- should match setCamera()'s dy
local d = math.sqrt(fx*fx + fy*fy)
fx = fx / d
fy = fy / d
local force = 200000
force = force * 0.5 + force * 0.5 * power
bowling_ball:addForce(fx * force, fy * force, 0)
end
function drawPowerBar(width, height)
@ -197,3 +226,23 @@ function drawPowerBar(width, height)
ag.fillRect(0.1, 1, 0.1, bar_width - 2, (bar_height - 2) * power,
width - 50 - bar_width / 2, height / 2)
end
function drawAccuracyBar(width, height)
local bar_width = 400
local bar_height = 60
if (game_state == "get_accuracy") then
local now = ag.elapsedTime()
accuracy = accuracy + (now - accuracy_last_time) / 250 * accuracy_direction
if (accuracy > 1) then
accuracy = 1
accuracy_direction = -1
elseif (accuracy < -1) then
accuracy = -1
accuracy_direction = 1
end
accuracy_last_time = now
end
ag.drawRect(1, 1, 1, bar_width, bar_height, width / 2, 50 + bar_height / 2)
ag.drawLine(1, 1, 1, width / 2, 50, width / 2, 50 + bar_height)
ag.fillRect(0.1, 1, 0.1, 3, bar_height - 2, width / 2 + (bar_width - 4) / 2 * accuracy, 50 + bar_height / 2)
end