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local bump = require 'bump'
local bump_debug = require 'bump_debug'
io.stdout:setvbuf("no")
local instructions = [[
bump.lua simple demo
arrows: move
tab: toggle debug info
delete: run garbage collector
]]
local cols_len = 0 -- how many collisions are happening
-- World creation
local world = bump.newWorld()
-- Message/debug functions
local function drawMessage()
local msg = instructions:format(tostring(shouldDrawDebug))
jin.graphics.setColor(255, 255, 255)
-- jin.graphics.print(msg, 550, 10)
end
local function drawDebug()
bump_debug.draw(world)
local statistics = ("fps: %d, mem: %dKB, collisions: %d, items: %d"):format(love.timer.getFPS(), collectgarbage("count"), cols_len, world:countItems())
jin.graphics.setColor(255, 255, 255)
-- jin.graphics.printf(statistics, 0, 580, 790, 'right')
end
local consoleBuffer = {}
local consoleBufferSize = 15
for i=1,consoleBufferSize do consoleBuffer[i] = "" end
local function consolePrint(msg)
table.remove(consoleBuffer,1)
consoleBuffer[consoleBufferSize] = msg
end
local function drawConsole()
local str = table.concat(consoleBuffer, "\n")
for i=1,consoleBufferSize do
jin.graphics.setColor(255,255,255, i*255/consoleBufferSize)
-- love.graphics.printf(consoleBuffer[i], 10, 580-(consoleBufferSize - i)*12, 790, "left")
end
end
-- helper function
local function drawBox(box, r,g,b)
jin.graphics.setColor(r,g,b,70)
jin.graphics.rect("fill", box.x, box.y, box.w, box.h)
jin.graphics.setColor(r,g,b)
jin.graphics.rect("line", box.x, box.y, box.w, box.h)
end
-- Player functions
local player = { x=50,y=50,w=20,h=20, speed = 80, onGround = false}
vx = 0
vy = 0
local function updatePlayer(dt)
local speed = player.speed
if jin.keyboard.isDown('Right') then
vx = speed
elseif jin.keyboard.isDown('Left') then
vx = -speed
end
if jin.keyboard.isDown('Down') then
vy = vy
elseif jin.keyboard.isDown('Up') then
vy = vy
elseif jin.keyboard.isDown('Space') and player.onGround then
vy = vy - 12000 * dt
print("jump")
print("on sky")
player.onGround = false
end
if not player.onGround then
vy = vy + 200 * dt
end
if vx ~= 0 or vy ~= 0 then
local cols
local py = player.y
player.x, player.y, cols, cols_len = world:move(player, player.x + vx * dt, player.y + vy * dt)
if py == player.y then
player.onGround = true
vy = 0
print("on ground")
end
for i=1, cols_len do
local col = cols[i]
consolePrint(("col.other = %s, col.type = %s, col.normal = %d,%d"):format(col.other, col.type, col.normal.x, col.normal.y))
end
end
vx = 0
end
local function drawPlayer()
drawBox(player, 0, 255, 0)
end
-- Block functions
local blocks = {}
local function addBlock(x,y,w,h)
local block = {x=x,y=y,w=w,h=h}
blocks[#blocks+1] = block
world:add(block, x,y,w,h)
end
local function drawBlocks()
for _,block in ipairs(blocks) do
drawBox(block, 255,0,0)
end
end
function jin.core.onEvent(e)
if e.type == "quit" then
jin.core.stop()
end
if e.type == "keydown" then
if e.key == "Escape" then
jin.core.stop()
end
end
end
-- Main LÖVE functions
function jin.core.onLoad()
world:add(player, player.x, player.y, player.w, player.h)
addBlock(0, 0, 800, 32)
addBlock(0, 32, 32, 600-32*2)
addBlock(800-32, 32, 32, 600-32*2)
addBlock(0, 600-32, 800, 32)
for i=1,30 do
addBlock( math.random(100, 600),
math.random(100, 400),
math.random(10, 100),
math.random(10, 100)
)
end
end
function jin.core.onUpdate(dt)
cols_len = 0
updatePlayer(dt)
end
function jin.core.onDraw()
drawBlocks()
drawPlayer()
if shouldDrawDebug then
drawDebug()
drawConsole()
end
drawMessage()
end
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