| 1 | <!DOCTYPE html> |
| 2 | <html> |
| 3 | |
| 4 | <head> |
| 5 | <meta charset="utf-8"> |
| 6 | <meta name="viewport" |
| 7 | content="width=device-width"> |
| 8 | <title>Jueguito 2</title> |
| 9 | <style> |
| 10 | body { |
| 11 | position: fixed; |
| 12 | top: 0px; |
| 13 | left: 0px; |
| 14 | width: 100%; |
| 15 | height: 100%; |
| 16 | margin: 0; |
| 17 | overflow: hidden; |
| 18 | } |
| 19 | |
| 20 | .sprite { |
| 21 | position: fixed; |
| 22 | } |
| 23 | </style> |
| 24 | <script> |
| 25 | |
| 26 | |
| 27 | class Jugador |
| 28 | extends HTMLElement { |
| 29 | izquierda() { |
| 30 | throw new Error("abstract") |
| 31 | } |
| 32 | derecha() { |
| 33 | throw new Error("abstract") |
| 34 | } |
| 35 | sube() { |
| 36 | throw new Error("abstract") |
| 37 | } |
| 38 | baja() { |
| 39 | throw new Error("abstract") |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | |
| 44 | class Figura |
| 45 | extends HTMLElement { |
| 46 | |
| 47 | |
| 48 | |
| 49 | |
| 50 | muevete(jugador) { |
| 51 | throw new Error("abstract"); |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | class Juego2 { |
| 56 | constructor() { |
| 57 | |
| 58 | this.jugador = document. |
| 59 | querySelector(".jugador") |
| 60 | |
| 61 | this.figuras = Array.from( |
| 62 | document.querySelectorAll( |
| 63 | ".figura")) |
| 64 | this.iniciaX = null |
| 65 | this.iniciaY = null |
| 66 | this.interval = null |
| 67 | this.activo = true |
| 68 | } |
| 69 | |
| 70 | inicia() { |
| 71 | document.addEventListener( |
| 72 | "keydown", |
| 73 | evt => this.teclas(evt)) |
| 74 | document.addEventListener( |
| 75 | "touchstart", |
| 76 | evt => this.iniciaTouch(evt)) |
| 77 | document.addEventListener( |
| 78 | "touchmove", |
| 79 | evt => |
| 80 | this.desplazaTouch(evt)) |
| 81 | this.interval = setInterval( |
| 82 | () => this.mueveFiguras(), 60) |
| 83 | } |
| 84 | |
| 85 | mueveFiguras() { |
| 86 | for (const f of this.figuras) { |
| 87 | f.muevete(this.jugador) |
| 88 | } |
| 89 | this.detectaColisiones() |
| 90 | } |
| 91 | |
| 92 | detectaColisiones() { |
| 93 | for (const f of this.figuras) { |
| 94 | if (colisiona( |
| 95 | this.jugador, f)) { |
| 96 | this.termina() |
| 97 | break |
| 98 | } |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | termina() { |
| 103 | this.activo = false |
| 104 | clearInterval(this.interval) |
| 105 | alert("Jueguito 2 terminado.") |
| 106 | } |
| 107 | |
| 108 | |
| 109 | teclas(evt) { |
| 110 | if (this.activo) { |
| 111 | switch (evt.key) { |
| 112 | case "ArrowLeft": |
| 113 | this.jugador.izquierda() |
| 114 | break |
| 115 | case "ArrowRight": |
| 116 | this.jugador.derecha() |
| 117 | break |
| 118 | case "ArrowUp": |
| 119 | this.jugador.sube() |
| 120 | break |
| 121 | case "ArrowDown": |
| 122 | this.jugador.baja() |
| 123 | break |
| 124 | } |
| 125 | this.detectaColisiones() |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | |
| 130 | iniciaTouch(evt) { |
| 131 | if (this.activo) { |
| 132 | const toqueInicial = |
| 133 | evt.touches[0] |
| 134 | this.iniciaX = |
| 135 | toqueInicial.clientX |
| 136 | this.iniciaY = |
| 137 | toqueInicial.clientY |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | |
| 142 | desplazaTouch(evt) { |
| 143 | if (this.activo |
| 144 | && this.iniciaX |
| 145 | && this.iniciaY) { |
| 146 | const desplazamiento = |
| 147 | evt.touches[0] |
| 148 | var desplazamientoX = |
| 149 | desplazamiento.clientX |
| 150 | var desplazamientoY = |
| 151 | desplazamiento.clientY |
| 152 | var difX = desplazamientoX - |
| 153 | this.iniciaX |
| 154 | var difY = desplazamientoY - |
| 155 | this.iniciaY |
| 156 | |
| 157 | |
| 158 | if (Math.abs(difX) |
| 159 | + Math.abs(difY) |
| 160 | > 150) { |
| 161 | if (Math.abs(difX) |
| 162 | > Math.abs(difY)) { |
| 163 | if (difX > 70) { |
| 164 | this.jugador.derecha() |
| 165 | } else { |
| 166 | this.jugador.izquierda() |
| 167 | } |
| 168 | } else if (difY > 70) { |
| 169 | this.jugador.baja() |
| 170 | } else { |
| 171 | this.jugador.sube() |
| 172 | } |
| 173 | this.detectaColisiones() |
| 174 | |
| 175 | this.iniciaX = null; |
| 176 | this.iniciaY = null; |
| 177 | } |
| 178 | } |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | |
| 183 | |
| 184 | |
| 185 | |
| 186 | |
| 187 | |
| 188 | function colisiona(e1, e2) { |
| 189 | const rE1 = |
| 190 | e1.getBoundingClientRect() |
| 191 | const rE2 = |
| 192 | e2.getBoundingClientRect() |
| 193 | return (rE1.right >= rE2.left |
| 194 | && rE1.left <= rE2.right |
| 195 | && rE1.top <= rE2.bottom |
| 196 | && rE1.bottom >= rE2.top) |
| 197 | } |
| 198 | |
| 199 | customElements.define( |
| 200 | "jugador-paloma", |
| 201 | class extends Jugador { |
| 202 | connectedCallback() { |
| 203 | this.classList.add("sprite") |
| 204 | this.classList.add("jugador") |
| 205 | this.innerHTML += "🕊" |
| 206 | this.style.fontSize = "60px" |
| 207 | const raiz = |
| 208 | document.documentElement |
| 209 | const r = |
| 210 | this.getBoundingClientRect() |
| 211 | const left = |
| 212 | (raiz.clientWidth |
| 213 | - r.width) / |
| 214 | 2 |
| 215 | const top = |
| 216 | (raiz.clientHeight - |
| 217 | r.height) / |
| 218 | 2 |
| 219 | this.style.left = `${left}px` |
| 220 | this.style.top = `${top}px` |
| 221 | } |
| 222 | |
| 223 | |
| 224 | sube() { |
| 225 | const top = |
| 226 | this.getBoundingClientRect(). |
| 227 | top - |
| 228 | 20 |
| 229 | this.style.top = `${top}px` |
| 230 | } |
| 231 | |
| 232 | |
| 233 | baja() { |
| 234 | const top = |
| 235 | this.getBoundingClientRect(). |
| 236 | top + |
| 237 | 20 |
| 238 | this.style.top = `${top}px` |
| 239 | } |
| 240 | |
| 241 | izquierda() { |
| 242 | const left = |
| 243 | this.getBoundingClientRect(). |
| 244 | left - |
| 245 | 20 |
| 246 | this.style.left = `${left}px` |
| 247 | } |
| 248 | |
| 249 | derecha() { |
| 250 | const left = |
| 251 | this.getBoundingClientRect(). |
| 252 | left + |
| 253 | 20 |
| 254 | this.style.left = `${left}px` |
| 255 | } |
| 256 | }) |
| 257 | |
| 258 | customElements.define( |
| 259 | "figura-aguila", |
| 260 | class extends Figura { |
| 261 | connectedCallback() { |
| 262 | this.classList.add("sprite") |
| 263 | this.classList.add("figura") |
| 264 | this.innerHTML = "🦅" |
| 265 | this.style.fontSize = "40px" |
| 266 | const r = |
| 267 | this.getBoundingClientRect() |
| 268 | this.style.left = |
| 269 | `${r.left}px` |
| 270 | this.style.top = `${r.top}px` |
| 271 | this.style.bottom = "auto" |
| 272 | this.style.right = "auto" |
| 273 | } |
| 274 | |
| 275 | |
| 276 | |
| 277 | |
| 278 | |
| 279 | |
| 280 | |
| 281 | muevete(jugador) { |
| 282 | const r = |
| 283 | this.getBoundingClientRect() |
| 284 | const rJ = jugador. |
| 285 | getBoundingClientRect() |
| 286 | const y2 = rJ.top |
| 287 | const y1 = r.top |
| 288 | const x2 = rJ.left |
| 289 | const x1 = r.left |
| 290 | const pendiente = x2 === x1 ? |
| 291 | 0 : |
| 292 | (y2 - y1) / (x2 - x1) |
| 293 | const dirección = |
| 294 | x2 > x1 ? 1 : -1 |
| 295 | const x = x1 + dirección * 5 |
| 296 | const y = |
| 297 | pendiente * (x - x1) + y1 |
| 298 | |
| 299 | |
| 300 | |
| 301 | this.style.left = |
| 302 | `${desvía(x)}px` |
| 303 | this.style.top = |
| 304 | `${desvía(y)}px` |
| 305 | } |
| 306 | }) |
| 307 | |
| 308 | |
| 309 | |
| 310 | |
| 311 | |
| 312 | |
| 313 | |
| 314 | function desvía(i) { |
| 315 | return i + 10 - |
| 316 | 20 * Math.random() |
| 317 | } |
| 318 | </script> |
| 319 | </head> |
| 320 | |
| 321 | <body> |
| 322 | <jugador-paloma></jugador-paloma> |
| 323 | <figura-aguila |
| 324 | style="right: 0; top: 0;"> |
| 325 | </figura-aguila> |
| 326 | <figura-aguila |
| 327 | style="right: 0; bottom: 0;"> |
| 328 | </figura-aguila> |
| 329 | <script> |
| 330 | |
| 331 | const juego2 = new Juego2() |
| 332 | juego2.inicia() |
| 333 | </script> |
| 334 | </body> |
| 335 | |
| 336 | </html> |