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|
<!doctype html>
<html>
<head><title>GEOMETRY</title></head>
<style type="text/css">
*
{
// border: 1px solid red;
}
body
{
background-color: #87CEEB;
overflow: hidden;
}
#frustrum
{
z-index: 666;
}
#player
{
z-index: 980;
background-color: #0f0;
}
#grid
{
display: none;
z-index: 950;
}
#water
{
z-index: 800;
background-color: #6666cc;
}
#seafloor
{
z-index: 810;
background-color: #8380ab;
}
#background
{
position: fixed;
overflow: visible;
z-index: 900;
}
#foreground
{
overflow: visible;
z-index: 999;
}
#hud
{
font-size: 14px;
font-family: monospace;
background-color: #333;
z-index: 1000;
color: #fff;
opacity: 0.7;
white-space: pre;
}
#tests
{
position: fixed;
right: 400px;
z-index: 1001;
}
.flip
{
-moz-transform: scaleX(-1);
-o-transform: scaleX(-1);
-webkit-transform: scaleX(-1);
transform: scaleX(-1);
filter: FlipH;
-ms-filter: "FlipH";
}
</style>
<body>
</body>
<script type="text/javascript" src="/js/jquery.js"></script>
<script type="text/javascript" src="jquery.gamequery-0.5.1.js"></script>
<script type="text/javascript">
var SCREEN_WIDTH = $(window).width()
var SCREEN_HEIGHT = $(window).height()
var REFRESH_RATE = 30
var ISLAND_HEIGHT = 576
var WATER_OFFSET = 458
var SKY_OFFSET = SCREEN_HEIGHT - ISLAND_HEIGHT
var FLOOR_OFFSET = SKY_OFFSET + WATER_OFFSET
var SEAFLOOR_DEPTH = 600
var FALL_THRESHOLD = 10
var ABOVE_SURFACE = 3
var ON_SURFACE = 2
var LANDING_ON_SURFACE = 1
var BELOW_SURFACE = 0
var BEYOND_SURFACE = -1
var OFF_MAP = -2
var ORIENTATION_RIGHT = 1
var ORIENTATION_LEFT = -1
var KEY_LEFT = 37
var KEY_UP = 38
var KEY_RIGHT = 39
var KEY_DOWN = 40
var KEYTRACK = {}
KEYTRACK[KEY_LEFT] = false
KEYTRACK[KEY_UP] = false
KEYTRACK[KEY_RIGHT] = false
KEYTRACK[KEY_DOWN] = false
function clamp (x, min, max)
{
return Math.max(min, Math.min(x, max))
}
var HUD =
{
div: document.createElement("div"),
surface: false,
msg: "",
update: function ()
{
var activity = Player.running ? "RUNNING" : ""
activity += Player.jumping ? " JUMPING" : ""
activity += Player.cannonball ? " CANNONBALL" : ""
activity += Player.underwater ? " UNDERWATER" : ""
var orientation = Player.orientation === ORIENTATION_RIGHT ? "RIGHT" : "LEFT"
HUD.div.innerHTML =
[
"",
"PLAYER", Player.x, Player.y, activity, orientation, "\n",
"SPEED ", Player.dx, Player.dy, HUD.surface, "\n",
"CANVAS", Canvas.x, Canvas.y, "\n",
"KEY_UP", KEYTRACK[KEY_UP], "\n",
"KEY_DOWN", KEYTRACK[KEY_DOWN], "\n",
"KEY_LEFT", KEYTRACK[KEY_LEFT], "\n",
"KEY_RIGHT", KEYTRACK[KEY_RIGHT], "\n",
"SCREEN", SCREEN_WIDTH, SCREEN_HEIGHT, SKY_OFFSET, "\n",
HUD.msg,
].join(" ")
},
init: function ()
{
HUD.div.style.position = "fixed"
HUD.div.style.top = 0
HUD.div.style.right = 0
HUD.div.style.width = 300 + "px"
HUD.div.style.height = 300 + "px"
HUD.div.setAttribute("id", "hud")
document.body.appendChild(HUD.div)
},
}
var Canvas =
{
div: document.createElement("canvas"),
background: document.createElement("div"),
foreground: document.createElement("div"),
water: document.createElement("div"),
seafloor: document.createElement("div"),
x: 0,
y: 0,
width: 2024+1224,
height: 3000,
surfaces: [],
ground: [
[0,-90],
[700,-90],
[1000,-70],
[1200,0],
[1210,SEAFLOOR_DEPTH],
[1980,SEAFLOOR_DEPTH],
[2080,0],
[2090,-90],
[2800,-90],
[2024+1224,-90],
],
recalculate_surfaces: function ()
{
var calc = []
for (var i = 1; i < Canvas.ground.length; i++)
{
var two = Canvas.ground[i]
var one = Canvas.ground[i-1]
// console.log(one,two)
calc.push([one[0], one[1]+FLOOR_OFFSET, two[0], two[1]+FLOOR_OFFSET])
}
for (var i = 0; i < Canvas.surfaces.length; i++)
{
var s = Canvas.surfaces[i]
calc.push([s[0], s[1]+FLOOR_OFFSET, s[2], s[3]+FLOOR_OFFSET])
}
Canvas.surfaces = calc
},
background_elements:
[
// x, y, width, height, image
[0, 0, 1224, 576, "landscape/island1bg.png"],
[0, 576, 1224, 1000, "#8380ab"],
[2024, 576, 1224, 1000, "#8380ab"],
[1224, WATER_OFFSET + SEAFLOOR_DEPTH - 152, 200, 152, "landscape/underwaterislandcorner.png",],
[1824, WATER_OFFSET + SEAFLOOR_DEPTH - 152, 200, 152, "landscape/underwaterislandcorner.png", "flip"],
[2024, 0, 1224, 576, "landscape/island1bg.png", "flip"],
],
foreground_elements:
[
// x, y, width, height, image
[0, -34, 1224, 576, "landscape/island1fg.png"],
],
init: function ()
{
Canvas.background.style.position = "fixed"
Canvas.background.style.top = 0 + "px"
Canvas.background.style.left = 0 + "px"
Canvas.background.style.width = Canvas.width + "px"
Canvas.background.style.height = Canvas.height + "px"
Canvas.background.setAttribute("id", "background")
document.body.appendChild(Canvas.background)
Canvas.foreground.style.position = "fixed"
Canvas.foreground.style.top = 0 + "px"
Canvas.foreground.style.left = 0 + "px"
Canvas.foreground.style.width = Canvas.width + "px"
Canvas.foreground.style.height = Canvas.height + "px"
Canvas.foreground.setAttribute("id", "foreground")
document.body.appendChild(Canvas.foreground)
Canvas.water.style.position = "fixed"
Canvas.water.style.top = SKY_OFFSET + WATER_OFFSET + "px"
Canvas.water.style.left = 0 + "px"
Canvas.water.style.width = Canvas.width + "px"
Canvas.water.style.height = Canvas.height + "px"
Canvas.water.setAttribute("id", "water")
document.body.appendChild(Canvas.water)
Canvas.seafloor.style.position = "fixed"
Canvas.seafloor.style.top = SKY_OFFSET + SEAFLOOR_DEPTH + "px"
Canvas.seafloor.style.left = 0 + "px"
Canvas.seafloor.style.width = Canvas.width + "px"
Canvas.seafloor.style.height = Canvas.height + "px"
Canvas.seafloor.setAttribute("id", "seafloor")
document.body.appendChild(Canvas.seafloor)
ctx = Canvas.div.getContext("2d"),
Canvas.div.style.position = "fixed"
Canvas.div.style.top = 0
Canvas.div.style.left = 0
Canvas.div.setAttribute("width", Canvas.width+"px")
Canvas.div.setAttribute("height", Canvas.height+"px")
Canvas.div.setAttribute("id", "grid")
document.body.appendChild(Canvas.div)
ctx.beginPath()
for (var x = 0.5; x < Canvas.width; x += 10)
{
ctx.moveTo(x, 0)
ctx.lineTo(x, Canvas.height)
}
for (var y = 0.5; y < Canvas.height; y += 10)
{
ctx.moveTo(0, y)
ctx.lineTo(Canvas.width, y)
}
ctx.strokeStyle = "rgba(255,255,255,0.2)"
ctx.stroke()
ctx.beginPath()
ctx.moveTo(0, SKY_OFFSET+0.5)
ctx.lineTo(Canvas.width+0.5, SKY_OFFSET+0.5)
ctx.strokeStyle = "rgba(255,255,0,1)"
ctx.stroke()
ctx.beginPath()
ctx.moveTo(0, FLOOR_OFFSET+0.5)
ctx.lineTo(Canvas.width+0.5, FLOOR_OFFSET+0.5)
ctx.strokeStyle = "rgba(255,255,0,1)"
ctx.stroke()
/*
ctx.fillStyle = "rgba(0,20,255,0.5)"
ctx.fillRect(0, Physics.water_level+0.5, Canvas.width, Canvas.height - Physics.water_level)
*/
Canvas.recalculate_surfaces ()
for (var i = 0; i < Canvas.surfaces.length; i++)
{
var surface = Canvas.surfaces[i]
ctx.beginPath()
ctx.moveTo(surface[0] + 0.5, surface[1] + 0.5)
ctx.lineTo(surface[2] + 0.5, surface[3] + 0.5)
ctx.strokeStyle = "#0bf"
ctx.stroke()
}
for (var i = 0; i < Canvas.background_elements.length; i++)
{
Frustrum.furniture.push (new Furniture (Canvas.background, Canvas.background_elements[i]))
}
for (var i = 0; i < Canvas.foreground_elements.length; i++)
{
Frustrum.furniture.push (new Furniture (Canvas.foreground, Canvas.foreground_elements[i]))
}
},
}
function Furniture (container, row)
{
var div = document.createElement("div")
div.style.position = "fixed"
div.style.left = row[0] + "px"
div.style.top = SKY_OFFSET + row[1] + "px"
div.style.width = row[2] + "px"
div.style.height = row[3] + "px"
if (row[4].substr(0,1) === "#")
div.style.background = row[4]
else
div.style.background = "url('" + row[4] + "')"
if (row.length === 6)
div.className = row[5]
container.appendChild(div)
// this.container = container
this.elem = div
this.x = row[0]
this.y = row[1]
this.width = row[2]
this.height = row[3]
this.background = row[4]
this.update = function ()
{
this.elem.style.top = SKY_OFFSET + this.y - Frustrum.y + "px"
this.elem.style.left = this.x - Frustrum.x + "px"
}
}
var Frustrum =
{
div: document.createElement("div"),
x: 0,
y: 0,
width: SCREEN_WIDTH,
height: SCREEN_HEIGHT,
furniture: [],
redraw: function ()
{
Canvas.div.style.top = Canvas.y - Frustrum.y + "px"
Canvas.div.style.left = Canvas.x - Frustrum.x + "px"
Player.div.style.top = Player.y - Frustrum.y + "px"
Player.div.style.left = Player.x - Frustrum.x + "px"
Canvas.water.style.top = SKY_OFFSET + WATER_OFFSET + Canvas.y - Frustrum.y + "px"
Canvas.seafloor.style.top = SKY_OFFSET + WATER_OFFSET + SEAFLOOR_DEPTH + Canvas.y - Frustrum.y + "px"
for (var i = 0; i < Frustrum.furniture.length; i++)
Frustrum.furniture[i].update()
},
update: function ()
{
if (Player.underwater)
{
Frustrum.dest_y = Player.y - Frustrum.halfheight + Player.height
Frustrum.dest_x = Player.x - Frustrum.halfwidth + Player.width
if (Player.y > Canvas.height - Frustrum.halfheight)
Frustrum.dest_y = Canvas.height - Frustrum.height
}
else
{
Frustrum.dest_x = 0
Frustrum.dest_y = 0
}
if (Player.x > Canvas.width - Frustrum.halfwidth)
Frustrum.dest_x = Canvas.width - Frustrum.width
else if (Player.x > Frustrum.halfwidth)
Frustrum.dest_x = Player.x - Frustrum.halfwidth
Frustrum.y = Math.floor( (Frustrum.dest_y + Frustrum.y * 9) / 10 )
Frustrum.x = Math.floor( (Frustrum.dest_x + Frustrum.x * 9) / 10 )
// Frustrum.div.style.top = Frustrum.y + "px"
// Frustrum.div.style.left = Frustrum.x + "px"
},
init: function ()
{
Frustrum.div.style.position = "fixed"
Frustrum.div.style.top = 0
Frustrum.div.style.left = 0
Frustrum.div.style.width = Frustrum.width + "px"
Frustrum.div.style.height = Frustrum.height + "px"
Frustrum.div.setAttribute("id", "frustrum")
document.body.appendChild(Frustrum.div)
Frustrum.halfwidth = Frustrum.width/2
Frustrum.halfheight = Frustrum.height/2
},
}
var Physics =
{
gravity: 5,
dx_walk: 50,
dx_swim: 50,
dy_swim_up: -20,
dy_swim_down: 20,
dy_resistance: 15,
dx_resistance: 15,
air_resistance: 15,
water_resistance: 8,
water_level: SKY_OFFSET + WATER_OFFSET,
jump_power: -45,
}
var Player =
{
div: document.createElement("div"),
running: false,
jumping: false,
start_jump: false,
swimming: false,
cannonball: false,
orientation: ORIENTATION_RIGHT,
dx: 0,
dy: 0,
x: 0,
y: 0,
width: 100,
height: 167,
yIntercept: 0,
surface: [0,0,0,0],
surface_left: [0,0,0,0],
surface_right: [0,0,0,0],
findNearestSurface: function (feet)
{
for (var i = 0; i < Canvas.surfaces.length; i++)
{
var s = Canvas.surfaces[i]
if (Player.onSurface(feet, s) > BELOW_SURFACE)
{
return s
}
}
return OFF_MAP
},
onSurface: function (feet, s)
{
if (s === OFF_MAP)
return OFF_MAP
// within bounds
if (Player.x < s[0] || Player.x > s[2])
return BEYOND_SURFACE
// above the line
if (s[1] === s[3])
{
Player.slope = 0
Player.yIntercept = s[1]
if (feet < s[1])
return ABOVE_SURFACE
if (feet <= s[1] + Player.dy + Physics.gravity + Player.height)
return ON_SURFACE
// if (! Player.surface)
// return ON_SURFACE
return ON_SURFACE
// return BELOW_SURFACE
}
var slope = (s[3] - s[1]) / (s[2] - s[0])
Player.slope = slope
Player.yIntercept = (Player.x - s[0]) * slope + s[1]
if (feet < Player.yIntercept - 1)
return ABOVE_SURFACE
if (feet <= Player.yIntercept + Player.dy + Physics.gravity + Player.height)
return ON_SURFACE
if (Player.surfaceState === ON_SURFACE)
return ON_SURFACE
// if (! Player.surface)
// return ON_SURFACE
return ON_SURFACE
// return BELOW_SURFACE
},
underwater: false,
update: function ()
{
var feet = Player.y + Player.height
Player.feet = feet
Player.surfaceState = Player.onSurface(feet, Player.surface)
switch (Player.surfaceState)
{
case ABOVE_SURFACE:
HUD.surface = "ABOVE SURFACE"
if (Player.underwater)
Player.dy = Math.min(Player.dy + Physics.gravity, Physics.dy_resistance)
else
Player.dy = Player.dy + Physics.gravity
if (Player.y + Player.dy + Player.height > Player.yIntercept)
{
Player.y = Player.yIntercept - Player.height
Player.dy = 0
Player.surfaceState = ON_SURFACE
}
break
case ON_SURFACE:
HUD.surface = "ON SURFACE"
Player.dy = 0
Player.y = Player.yIntercept - Player.height
Player.jumping = false
HUD.msg = [Player.y, Player.yIntercept, Player.height, "...", Player.surface]
// clearInterval(Events.interval)
// Tests.random_x()
break
case BELOW_SURFACE:
HUD.surface = "BELOW SURFACE"
Player.dy = 0
Player.y = Player.yIntercept - Player.height
Player.surfaceState = ON_SURFACE
break
case BEYOND_SURFACE:
HUD.surface = "BEYOND SURFACE"
Player.surface = Player.findNearestSurface(feet)
Player.update()
break
case OFF_MAP:
HUD.surface = "OFF MAP"
break
}
// Player.div.style.left = Player.x + "px"
// Player.div.style.top = Player.y + "px"
if (Player.underwater)
{
if (Player.y > Physics.water_level - 2 && Player.y < Physics.water_level + 2)
Player.dy = 0
else if (Player.y < Physics.water_level)
{
Player.underwater = false
Player.cannonball = false
Physics.dx_resistance = Physics.air_resistance
Physics.dy_resistance = Physics.air_resistance
}
if (KEYTRACK[KEY_UP])
Player.dy = Physics.dy_swim_up
if (KEYTRACK[KEY_DOWN])
Player.dy = Physics.dy_swim_down
if (KEYTRACK[KEY_LEFT] || KEYTRACK[KEY_RIGHT])
Player.dx = Physics.dx_swim * Player.orientation
else
Player.dx = 0
}
else
{
if (Player.y > Physics.water_level)
{
Player.jumping = false
Player.cannonball = false
Player.underwater = true
Player.yJump = Physics.water_level
Physics.dx_resistance = Physics.water_resistance
Physics.dy_resistance = Physics.water_resistance
}
else if (Player.yJump < Physics.water_level && Player.yIntercept > Physics.water_level)
Player.cannonball = true
else
Player.cannonball = false
if ((Player.start_jump || KEYTRACK[KEY_UP]) && Player.surfaceState === ON_SURFACE)
{
Player.start_jump = false
Player.jumping = true
Player.yJump = Player.y
Player.dy = Physics.jump_power
Player.y += Player.dy
Player.surfaceState = ABOVE_SURFACE
}
if (KEYTRACK[KEY_LEFT])
{
Player.dx = Physics.dx_walk * Player.orientation
}
else if (KEYTRACK[KEY_RIGHT])
{
Player.dx = Physics.dx_walk * Player.orientation
}
else
Player.dx = 0
}
Player.y += Player.dy
Player.x = clamp (Player.x + Player.dx, 10, Canvas.width-Player.width - 20)
},
init: function ()
{
Player.x = 200
Player.y = SKY_OFFSET + FLOOR_OFFSET - 350 - Player.height
Player.div.style.position = "fixed"
Player.div.style.top = Player.y + "px"
Player.div.style.left = Player.x + "px"
Player.div.style.width = Player.width + "px"
Player.div.style.height = Player.height + "px"
Player.div.setAttribute("id", "player")
document.body.appendChild(Player.div)
},
}
var Events =
{
interval: false,
keydown: function (e)
{
KEYTRACK[e.keyCode] = true
switch (e.keyCode)
{
case KEY_UP:
if (Player.underwater || Player.jumping)
break
Player.start_jump = true
break
case KEY_LEFT:
Player.orientation = ORIENTATION_LEFT
break
case KEY_RIGHT:
Player.orientation = ORIENTATION_RIGHT
break
case 71: // "G"
$("#grid").toggle()
break
}
},
keyup: function (e)
{
KEYTRACK[e.keyCode] = false
},
loop: function ()
{
Player.update()
Frustrum.update()
Frustrum.redraw()
HUD.update()
},
init: function ()
{
$(document).bind("keydown", Events.keydown)
$(document).bind("keyup", Events.keyup)
Events.interval = setInterval(Events.loop, REFRESH_RATE)
},
}
var Tests =
{
random_x: function ()
{
Player.x = Player.x+1 // Math.floor(Math.random () * 500)
if (Player.x > Canvas.width)
{
Player.x = 0
Player.y = 0
}
// Player.y = 50 // Math.floor(Math.random () * 50)
Player.surface = Canvas.surfaces[0]
//if (Math.random() > 0.3)
// {
// Player.dy = -5
// }
},
init: function ()
{
// $("#random_x").click(Tests.random_x)
},
}
var Main =
{
init: function ()
{
// Tests.init()
Canvas.init()
Player.init()
Frustrum.init()
HUD.init()
Events.init()
},
}
Main.init ()
</script>
</html>
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