evert/tower-defense
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tower selection and info box

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This commit is contained in:
Evert Prants 2017-08-22 11:57:48 +03:00
parent b1d9f469bc
commit 9d1aac4a73
Signed by: evert
GPG Key ID: 1688DA83D222D0B5
1 changed files with 108 additions and 26 deletions
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134
index.js
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@ -35,6 +35,7 @@ window.onload = function () {
wave: 0,
waveTimer: 0,
tower: 'simple',
towerSel: null,
sellRatio: .8
}
@ -155,6 +156,7 @@ window.onload = function () {
class Component {
constructor (x, y) {
this.visible = true
this.x = x
this.y = y
}
@ -179,6 +181,7 @@ window.onload = function () {
}
draw () {
if (!this.visible) return
if (this.font) ctx.font = this.font
ctx.fillStyle = this.color
ctx.fillRect(this.x, this.y, this.w, this.h)
@ -226,6 +229,7 @@ window.onload = function () {
}
draw () {
if (!this.visible) return
if (this.active) {
ctx.fillStyle = '#afa'
ctx.fillRect(this.x - 2, this.y - 2, this.w + 4, this.h + 4)
@ -263,14 +267,17 @@ window.onload = function () {
}
function clickBtn () {
let click = false
for (let i in Components) {
let btn = Components[i]
if (!(btn instanceof ButtonComponent)) continue
if (btn.disabled) continue
if (btn.disabled || !btn.visible) continue
if (mXr > btn.x && mYr > btn.y && mXr < btn.x + btn.w && mYr < btn.y + btn.h) {
btn.fn()
click = true
}
}
return click
}
// Use this function to spawn enemies depending on round
@ -394,12 +401,14 @@ window.onload = function () {
Game.particles.push({
x: tower.x,
y: tower.y,
tower: {x: tower.x, y: tower.y},
velX: (target.x - tower.x) / target.dist * 1.24,
velY: (target.y - tower.y) / target.dist * 1.24,
dmg: tower.damage,
speed: tower.speed,
life: 100
})
tower.fires++
}
function tickTowers () {
@ -440,6 +449,11 @@ window.onload = function () {
if (enemy.dmg <= 0) {
Game.enemies.splice(j, 1)
Game.money += 10
let tower = getTowerAt(parti.tower.x, parti.tower.y)
if (tower) {
tower.killcount++
}
}
// remove particle
@ -449,6 +463,8 @@ window.onload = function () {
}
}
// Render text telling the amount of money received when selling a tower
// Disappears after 30 game ticks
function tickSellText () {
for (let i in Game.selltext) {
let txt = Game.selltext[i]
@ -456,12 +472,18 @@ window.onload = function () {
txt.tick %= 30
if (txt.tick === 0) {
Game.selltext.splice(i, 1)
continue
}
txt.y -= 0.05
}
}
function selectTower (x, y) {
let tower = getTowerAt(x, y)
Game.towerSel = tower
}
// Total enemy spawn count is used to determine that the round is over
// Local (in-function) determines how many there are left to spawn as ordered by the function call
function addEnemies (cnt, type) {
@ -544,12 +566,14 @@ window.onload = function () {
x: x,
y: y,
tick: tower.rate,
setting: 1
setting: 1,
fires: 0,
killcount: 0
}, tower))
}
function sellTower (x, y) {
var tower = getTowerAt(x, y)
let tower = getTowerAt(x, y)
if(tower) {
let amount = tower.cost * Game.sellRatio
Game.money += amount
@ -559,6 +583,11 @@ window.onload = function () {
amount: amount,
tick: 0
})
if (Game.towerSel && Game.towerSel.x === x && Game.towerSel.y === y) {
Game.towerSel = null
}
return Game.towers.splice(Game.towers.indexOf(tower), 1)
}else{
return null
@ -597,6 +626,8 @@ window.onload = function () {
if (Game.state === 1) {
Game.waveTimer++
}
Components.sell.visible = Game.towerSel !== null
}
function render () {
@ -609,7 +640,7 @@ window.onload = function () {
let index = parseInt(i)
let y = Math.floor(index / Maps.width)
let x = Math.floor(index % Maps.height)
var draw_tile = true
let draw_tile = true
if (tile === 1) {
ctx.fillStyle = '#fdd'
@ -666,20 +697,31 @@ window.onload = function () {
ctx.fillRect(tower.x * mt + mt / 16, tower.y * mt + mt / 16, 8, 8)
}
// tower placement
if (Game.state === 2 && Game.tower && mX < Maps.width && mY < Maps.height) {
// tower range visualization
let towerData = Towers[Game.tower]
if (towerData.cost <= Game.money && canPlaceTowerAt (mX, mY)) {
let towerData = Towers[Game.tower]
ctx.strokeStyle = '#ddd'
ctx.fillStyle = 'rgba(200, 200, 200, 0.25)'
ctx.beginPath()
ctx.arc(mX * mt + mt / 2, mY * mt + mt / 2, towerData.range * mt, 0, 2 * Math.PI)
ctx.stroke()
ctx.fill()
ctx.closePath()
}
// tower range visualization
let towerData = Towers[Game.tower]
let vX = null
let vY = null
// Render the currently selected tower's range if present
if (Game.towerSel) {
towerData = Game.towerSel
vX = towerData.x
vY = towerData.y
} else if (towerData != null && towerData.cost <= Game.money && canPlaceTowerAt (mX, mY) &&
mX < Maps.width && mY < Maps.height && Game.state === 2) {
vX = mX
vY = mY
}
// Render range
if (vX != null && vY != null && towerData) {
ctx.strokeStyle = '#ddd'
ctx.fillStyle = 'rgba(200, 200, 200, 0.25)'
ctx.beginPath()
ctx.arc(vX * mt + mt / 2, vY * mt + mt / 2, towerData.range * mt, 0, 2 * Math.PI)
ctx.stroke()
ctx.fill()
ctx.closePath()
}
for (let i in Game.selltext) {
@ -699,11 +741,6 @@ window.onload = function () {
ctx.fillText('Health: ' + Game.health, 645, 45)
ctx.fillText('Money: ' + Game.money, 645, 65)
for (let i in Components) {
let btn = Components[i]
btn.draw()
}
if (Game.state === -1) {
ctx.font = '80px Helvetica'
ctx.fillStyle = '#f00'
@ -714,6 +751,34 @@ window.onload = function () {
ctx.fillStyle = 'rgba(255, 0, 0, 0.24)'
ctx.fillRect(mX * mt, mY * mt, mt, mt)
}
// Render a selection information box
// TODO: component
if (Game.towerSel) {
let by = (Maps.height - 5) * Maps.tile
let ts = Game.towerSel
ctx.fillStyle = 'rgba(0, 0, 0, 0.45)'
ctx.fillRect(0, by, Maps.width * Maps.tile, 5 * Maps.tile)
ctx.fillStyle = '#fff'
ctx.font = '25px Helvetica'
ctx.fillText(ts.name + ' Tower', 5, by + 25)
ctx.font = '15px Helvetica'
ctx.fillText(ts.description, 5, by + 42)
ctx.fillText('Range: ' + ts.range + ' tiles', 5, by + 70)
ctx.fillText('Damage: ' + ts.damage + ' HP', 5, by + 85)
ctx.fillText('Fire Rate: ' + ts.rate, 5, by + 100)
ctx.fillText('Kills: ' + ts.killcount, 5, by + 115)
ctx.fillText('Fired ' + ts.fires + ' times', 5, by + 130)
}
for (let i in Components) {
let btn = Components[i]
btn.draw()
}
}
let lastTime = Date.now()
@ -736,10 +801,18 @@ window.onload = function () {
function initialize () {
Game.map = Maps.first
// Next wave button
Components.wave = new ButtonComponent('Next Wave', '#fff', '#11f', 650, 570, 200, 60, () => {
updateGameState(1)
})
// Tower sell button
Components.sell = new ButtonComponent('Sell Tower', '#fff', '#f11', 490, 590, 140, 40, () => {
if (Game.towerSel) {
sellTower(Game.towerSel.x, Game.towerSel.y)
}
})
let index = 0
for (let i in Towers) {
Components[i] = new TowerButton(i, index)
@ -750,11 +823,20 @@ window.onload = function () {
}
canvas.addEventListener('click', (e) => {
if (Game.state === 2 && mX < Maps.width && mY < Maps.height && Game.tower) {
if (clickBtn()) return
if (mX < Maps.width && mY < Maps.height) {
// Select a tower if present
if (getTowerAt(mX, mY)) {
return selectTower(mX, mY)
} else if (Game.towerSel) {
Game.towerSel = null
return
}
// Place a tower
if (!Game.tower || Game.state !== 2) return
placeTower(Towers[Game.tower], mX, mY)
}
clickBtn()
})
canvas.addEventListener('contextmenu', (e) => {