mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-09-20 05:12:18 +02:00
91 lines
2.1 KiB
Go
91 lines
2.1 KiB
Go
// Copyright 2021 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"fmt"
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"math/rand"
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"time"
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)
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// Level represents a Game level.
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type Level struct {
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w, h int
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tiles [][]*Tile // (Y,X) array of tiles
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tileSize int
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}
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// Tile returns the tile at the provided coordinates, or nil.
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func (l *Level) Tile(x, y int) *Tile {
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if x >= 0 && y >= 0 && x < l.w && y < l.h {
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return l.tiles[y][x]
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}
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return nil
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}
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// Size returns the size of the Level.
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func (l *Level) Size() (width, height int) {
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return l.w, l.h
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}
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// NewLevel returns a new randomly generated Level.
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func NewLevel() (*Level, error) {
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// Create a 108x108 Level.
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l := &Level{
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w: 108,
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h: 108,
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tileSize: 64,
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}
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// Load embedded SpriteSheet.
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ss, err := LoadSpriteSheet(l.tileSize)
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if err != nil {
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return nil, fmt.Errorf("failed to load embedded spritesheet: %s", err)
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}
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// Generate a unique permutation each time.
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r := rand.New(rand.NewSource(time.Now().UTC().UnixNano()))
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// Fill each tile with one or more sprites randomly.
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l.tiles = make([][]*Tile, l.h)
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for y := 0; y < l.h; y++ {
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l.tiles[y] = make([]*Tile, l.w)
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for x := 0; x < l.w; x++ {
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t := &Tile{}
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isBorderSpace := x == 0 || y == 0 || x == l.w-1 || y == l.h-1
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val := r.Intn(1000)
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switch {
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case isBorderSpace || val < 275:
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t.AddSprite(ss.Wall)
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case val < 285:
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t.AddSprite(ss.Statue)
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case val < 288:
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t.AddSprite(ss.Crown)
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case val < 289:
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t.AddSprite(ss.Floor)
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t.AddSprite(ss.Tube)
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case val < 290:
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t.AddSprite(ss.Portal)
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default:
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t.AddSprite(ss.Floor)
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}
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l.tiles[y][x] = t
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}
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}
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return l, nil
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}
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