2d:null 2e:["$","title",null,{"children":"Kaboom RPG Example | Andrew Wooldridge | Observable"}] 33:Te33,{ // initialize Kaboom and assign to var let K= KABOOM({ width: 140, // width of canvas height: 140, // height of canvas scale: 4, clearColor: [0, 0, 0, 1], canvas: document.getElementById("kb"), }); // Load Images K.loadSprite("steel", await FileAttachment("steel.png").url()); K.loadSprite("ch1", await FileAttachment("ch1.png").url()); K.loadSprite("ch2", await FileAttachment("ch2.png").url()); K.loadSprite("grass", await FileAttachment("grass.png").url()); K.loadSprite("door", await FileAttachment("door.png").url()); K.loadSprite("key", await FileAttachment("key.png").url()); K.loadSprite("guy", await FileAttachment("guy.png").url()); K.scene("main", (levelIdx) => { //levelIdx passed in from start() const characters = { "a": { sprite: "ch1", msg: "ohhi how are you", }, "b": { sprite: "ch2", msg: "get out!", }, }; const levels = [ [ "=======|==", "= =", "= a =", "= =", "= =", "= $ =", "= =", "= =", "= @ =", "==========", ], [ "==========", "= =", "= $ =", "= =", "| =", "= =", "= b =", "= =", "= @ =", "==========", ], ]; K.addLevel(levels[levelIdx], { width: 11, height: 11, pos: K.vec2(20, 20), "=": [ K.sprite("steel"), K.solid(), ], "$": [ K.sprite("key"), "key", ], "@": [ K.sprite("guy"), "player" ], "|": [ K.sprite("door"), //K.solid(), "door", ], any(ch) { const char = characters[ch]; if (char) { return [ K.sprite(char.sprite), //K.solid(), "character", { msg: char.msg, }, ]; } }, }); const player = K.get("player")[0]; let hasKey = false; let talking = null; function talk(msg) { talking = K.add([ K.text(msg), ]); } player.overlaps("key", (key) => { K.destroy(key); hasKey = true; }); player.overlaps("door", () => { if (hasKey) { if (levelIdx + 1 < levels.length) { K.go("main", levelIdx + 1); } else { K.go("win"); } } else { talk("you got no key!"); } }); player.overlaps("character", (ch) => { talk(ch.msg); }); K.keyPress(["left", "right", "up", "down"], () => { if (talking) { K.destroy(talking); talking = null; } }); K.keyPress("left", () => { player.moveLeft(); const targets = player.resolve() if (targets.length && targets.find(t => t.obj.gridPos.x === player.gridPos.x && t.obj.gridPos.y === player.gridPos.y) ) { player.moveRight() } }); K.keyPress("right", () => { player.moveRight(); // handle tile collision const targets = player.resolve() if (targets.length && targets.find(t => t.obj.gridPos.x === player.gridPos.x && t.obj.gridPos.y === player.gridPos.y) ) { player.moveLeft() } }); K.keyPress("up", () => { player.moveUp(); // handle tile collision const targets = player.resolve() if (targets.length && targets.find(t => t.obj.gridPos.x === player.gridPos.x && t.obj.gridPos.y === player.gridPos.y) ) { player.moveDown() } }); K.keyPress("down", () => { player.moveDown(); const targets = player.resolve() if (targets.length && targets.find(t => t.obj.gridPos.x === player.gridPos.x && t.obj.gridPos.y === player.gridPos.y) ) { player.moveUp() } }); }); K.scene("win", () => { K.add([ K.text("you win!"), K.pos(K.width() / 2, K.height() / 2), K.origin("center"), ]); }); K.start("main", 0); 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\"@triptych/kaboom-js\";","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":7,"value":"

\n","pinned":true,"hidden":false,"mode":"html","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":10,"value":"$33","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":66,"value":"

Updates

May 23, 2021 - Added collision detection from AaronJewell\n\n

","pinned":false,"hidden":false,"mode":"html","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W34","stdlib":"1","titling":"auto"}} 32:"$31:body"