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0451-Bomb-显示敌人和角色

news 2026/8/16 9:08:25

环境

Time 2024-03-16
Zig 0.12.0-dev.3152+90c1a2c41
WSL-Ubuntu 22.04.3 LTS
raylib 5.0

前言

说明

参考资料：

《游戏开发：世嘉新人培训教材》
图片素材：https://www.ituring.com.cn/book/1742

目标

在上一节的基础上，显示出敌人和玩家控制的角色。

map.zig

在地图中新增了 roles 来保存玩家的角色和敌人。

const std = @import("std");
const engine = @import("engine.zig");var tileMap: engine.TileMap = undefined;pub fn init() void {tileMap = engine.TileMap.init("map.png", 32);
}pub fn deinit() void {tileMap.deinit();
}const StageConfig = struct {enemy: usize,brickRate: usize,power: usize,bomb: usize,
};const stageConfig = [_]StageConfig{.{ .enemy = 2, .brickRate = 90, .power = 4, .bomb = 6 },.{ .enemy = 3, .brickRate = 80, .power = 1, .bomb = 0 },.{ .enemy = 6, .brickRate = 30, .power = 0, .bomb = 1 },
};// 定义地图的类型
pub const MapType = enum(u8) {space = 9,wall = 7,brick = 8,bomb = 2,power = 3,
};
const MapTypeSet = std.enums.EnumSet(MapType);const width = 19;
const height = 15;
var data: [width * height]MapTypeSet = undefined;pub fn drawEnum(mapType: MapType, x: usize, y: usize) void {tileMap.drawI(@intFromEnum(mapType), x, y);
}const RoleType = enum(u8) { player1 = 1, player2 = 2, enemy = 6 };const Role = struct {x: usize,y: usize,type: RoleType = .enemy,
};pub const WorldMap = struct {width: usize = width,height: usize = height,data: []MapTypeSet,roles: []Role,pub fn init(_: usize) ?WorldMap {const number = stageConfig[0].enemy + 1;const roles = engine.allocator.alloc(Role, number) catch |e| {std.log.info("create role error: {}", .{e});return null;};roles[0] = .{ .x = 1, .y = 1, .type = .player1 };const map = WorldMap{ .data = &data, .roles = roles };map.generateMap(stageConfig[0]);return map;}fn generateMap(self: WorldMap, config: StageConfig) void {var bricks: [data.len]usize = undefined;var brickNumber: usize = 0;var floors: [data.len]usize = undefined;var floorNumber: usize = 0;for (0..self.height) |y| {for (0..self.width) |x| {self.data[x + y * width] = if (isFixWall(x, y))MapTypeSet.initOne(.wall)else if (isFixSpace(x, y))MapTypeSet.initOne(.space)else if (engine.random(100) < config.brickRate) label: {bricks[brickNumber] = x << 16 | y;brickNumber += 1;break :label MapTypeSet.initOne(.brick);} else label: {floors[floorNumber] = x << 16 | y;floorNumber += 1;break :label MapTypeSet.initOne(.space);};}}generateItem(self, bricks[0..brickNumber], config);generateRole(self, floors[0..floorNumber], config);}fn isFixWall(x: usize, y: usize) bool {if (x == 0 or y == 0) return true;if (x == width - 1 or y == height - 1) return true;if (x % 2 == 0 and y % 2 == 0) return true;return false;}fn isFixSpace(x: usize, y: usize) bool {return y + x < 4;}fn generateItem(self: WorldMap, bricks: []usize, cfg: StageConfig) void {for (0..cfg.bomb + cfg.power) |i| {const swapped = engine.randomW(i, bricks.len);const tmp = bricks[i];bricks[i] = bricks[swapped];bricks[swapped] = tmp;const x = bricks[i] >> 16 & 0xFFFF;const item: MapType = if (i < cfg.power) .power else .bomb;self.data[x + (bricks[i] & 0xFFFF) * self.width].insert(item);}}fn generateRole(self: WorldMap, floors: []usize, cfg: StageConfig) void {for (0..cfg.enemy) |i| {const swapped = engine.randomW(i, floors.len);const tmp = floors[i];floors[i] = floors[swapped];floors[swapped] = tmp;self.roles[1 + i] = .{.x = floors[i] >> 16 & 0xFFFF,.y = floors[i] & 0xFFFF,};}}pub fn draw(self: WorldMap) void {for (0..self.height) |y| {for (0..self.width) |x| {const value = data[x + y * self.width];if (value.contains(.wall)) drawEnum(.wall, x, y) //else if (value.contains(.brick)) drawEnum(.brick, x, y) //else {drawEnum(.space, x, y);if (value.contains(.power)) drawEnum(.power, x, y) //else if (value.contains(.bomb)) drawEnum(.bomb, x, y);}}}for (self.roles) |value| {tileMap.drawI(@intFromEnum(value.type), value.x, value.y);}}pub fn size(self: WorldMap) usize {return self.width * self.height;}pub fn deinit(self: WorldMap) void {engine.allocator.free(self.roles);}
};