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trade.js
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trade.js
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var Trade = function(npc) {
this.items = npc.items;
this.itemPt = 0;
this.state = "anime";
this.buy = true;
this.npc = npc;
this.sellPt = 0;
};
var TradeControl = function(game) {
var buy = function(pt) {
var item = Items[game.trade.items[pt]];
var playerItems = game.player.items;
var i;
if (game.player.money >= item.buy) {
game.player.money -= item.buy;
game.player.getItem(game.trade.items[pt]);
game.trade.state = "anime";
} else {
alert("金币不足");
}
};
var sell = function(pt) {
if (game.player.items.length > 0) {
var item = Items[game.player.items[pt].type];
game.player.money += item.buy / 2;
game.player.items[pt].amount--;
if (game.player.items[pt].amount === 0) {
game.player.items.splice(pt, 1);
game.trade.sellPt = 0;
}
game.trade.state = "anime";
}
};
this.tick = function() {};
$env.bind("keydown", function(event) {
if (game.state === "trade" && game.trade.state === "idle") {
var trade = game.trade;
var key = event.which;
if (key === 38) {
if (trade.buy) {
trade.itemPt -= 2;
} else {
trade.sellPt -= 2;
}
trade.state = "anime";
} else if (key === 40) {
if (trade.buy) {
trade.itemPt += 2;
} else {
trade.sellPt += 2;
}
trade.state = "anime";
} else if (key === 37) {
if (trade.buy) {
trade.itemPt--;
} else {
trade.sellPt--;
}
trade.state = "anime";
} else if (key === 39) {
if (trade.buy) {
trade.itemPt++;
} else {
trade.sellPt++;
}
trade.state = "anime";
} else if (key === 13) {
if (trade.buy) {
buy(trade.itemPt);
} else {
sell(trade.sellPt);
}
} else if (key === 27) {
game.state = "ground";
game.trade = null;
if (game.story.canToNext(game)) {
game.story.toNext(game);
game.state = "story";
return;
}
} else if (key === 188) {
trade.buy = true;
trade.state = "anime";
} else if (key === 190) {
trade.buy = false;
trade.state = "anime";
}
if (trade.buy) {
trade.itemPt = trade.itemPt < 0 ? 0 : trade.itemPt;
trade.itemPt = trade.itemPt >= trade.items.length ? trade.items.length - 1 : trade.itemPt;
} else {
trade.sellPt = trade.sellPt < 0 ? 0 : trade.sellPt;
trade.sellPt = trade.sellPt >= game.player.items.length ? game.player.items.length - 1 : trade.sellPt;
}
}
});
};
var TradePainter = function(game) {
var getAmount = function(item) {
var items = game.player.items;
for (var i = items.length; i--;) {
if (items[i].type === item) {
return items[i].amount;
}
}
return 0;
};
this.paint = function() {
if (game.state === "trade") {
var trade = game.trade;
var start;
var end;
var cur;
var i, m, k;
var items;
var pt;
var index;
var desc;
if (trade.state === "anime") {
//绘制面板
PainterHelper.drawPanel(0, 0, 150, 150);
PainterHelper.drawPanel(0, 150, 150, 200);
PainterHelper.drawPanel(150, 0, 570, 350);
PainterHelper.drawPanel(0, 350, 720, 130);
//绘制头像
PainterHelper.drawNpcAvatar(trade.npc.detail.rc_index, 7, 7, 136, 136);
//定义字体,默认为白色
ctx.font = "bold 20px 'Microsoft YaHei'";
ctx.fillStyle = "#f0f0f0";
//主选栏,选择操作类型
if (trade.buy) {
ctx.fillStyle = "yellow";
PainterHelper.drawText("购买", 10, 190, 130);
ctx.fillStyle = "#f0f0f0";
PainterHelper.drawText("出售", 10, 220, 130);
} else {
ctx.fillStyle = "#f0f0f0";
PainterHelper.drawText("购买", 10, 190, 130);
ctx.fillStyle = "yellow";
PainterHelper.drawText("出售", 10, 220, 130);
}
ctx.fillStyle = "#f0f0f0";
PainterHelper.drawText("'<'和'>'切换", 10, 270, 130);
PainterHelper.drawText("ESC退出", 10, 300, 130);
PainterHelper.drawText("金币:" + game.player.money, 10, 330, 130);
//物品选择栏
ctx.font = "italic bold 35px 'Microsoft YaHei'";
PainterHelper.drawText(trade.buy ? "购买" : "出售", 170, 40, 130);
ctx.font = "bold 20px 'Microsoft YaHei'";
if (trade.buy) {
items = trade.items;
pt = trade.itemPt;
} else {
items = game.player.items;
pt = trade.sellPt;
}
start = 0;
end = Math.ceil(items.length / 2);
cur = Math.ceil(pt / 2) - 1;
if (end - start > 10) {
if (end - cur <= 5) {
start = end - 10;
} else if (cur - start <= 5) {
end = start + 10;
} else {
start = cur - 5;
end = cur + 5;
}
}
for (i = start * 2, m = items.length, k = end * 2; i < m && i < k; i++) {
if (i === pt) {
ctx.fillStyle = "yellow";
} else {
ctx.fillStyle = "#f0f0f0";
}
ctx.textAlign = "left";
if (trade.buy) {
PainterHelper.drawText(Items[items[i]].name, (i % 2) * 285 + 170, 70 + 25 * Math.floor(i / 2 - start), 150);
ctx.textAlign = "end";
PainterHelper.drawText(Items[items[i]].buy + "/" + getAmount(items[i]), (i % 2) * 285 + 415, 70 + 25 * Math.floor(i / 2 - start), 95);
} else if (game.player.items.length > 0) {
PainterHelper.drawText(Items[items[i].type].name, (i % 2) * 285 + 170, 70 + 25 * Math.floor(i / 2 - start), 150);
ctx.textAlign = "end";
PainterHelper.drawText(Items[items[i].type].buy / 2 + "/" + items[i].amount, (i % 2) * 285 + 415, 70 + 25 * Math.floor(i / 2 - start), 95);
}
}
ctx.textAlign = "left";
ctx.fillStyle = "#f0f0f0";
if (trade.buy) {
desc = Items[items[pt]].desc;
} else if (game.player.items.length > 0) {
desc = Items[items[pt].type].desc;
} else {
desc = [];
}
for (i = 0, m = desc.length; i < m; i++) {
PainterHelper.drawText(desc[i], 20, 380 + i * 25, 680);
}
trade.state = "idle";
}
}
};
};