119 lines
2.5 KiB
Odin
119 lines
2.5 KiB
Odin
package space_invaders
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import "core:c"
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import "core:log"
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import glm "core:math/linalg/glsl"
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import rl "vendor:raylib"
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// orignal resolution of space invaders
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// 256 x 224 px
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TEXTURE_ATLAS_PATH :: "./assets/texture_atlas.png"
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DEBUG_MODE :: false
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GameEndType :: enum {
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AllAliensKilled,
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PlayerDied,
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AliensReachedPlayer,
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}
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GameState :: struct {
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// window
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target_fps: c.int,
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title: cstring,
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screen_width: c.int,
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screen_height: c.int,
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// frame stats
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frame_counter: int,
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current_frame_time: f64,
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last_frame_time: f64,
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delta_time: f64,
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// game vars
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screen: GameScreen,
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previous_screen: GameScreen,
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last_frame_screen: GameScreen,
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game_end: GameEndType,
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reset_game: bool,
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aliens: #soa[ALIENS]Alien,
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bullets: #soa[MAX_BULLETS]Bullet,
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bullet_index: int,
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player_last_time_fired: f64,
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player_pos: glm.vec2,
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player_health: c.int,
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player_score: c.int,
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player_high_score: c.int,
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shuffle_dir: ShuffleDirection,
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last_shuffle_dir: ShuffleDirection,
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}
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state: GameState
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texture_atlas_image: rl.Image
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texture_atlas: rl.Texture2D
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camera := rl.Camera2D {
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zoom = 2,
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}
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setup :: proc(state: ^GameState) {
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using state
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target_fps = 60
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screen_width = 800 * 2
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screen_height = 600 * 2
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title = "Space Invaders (raylib+odin-lang edition)"
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current_frame_time = rl.GetTime()
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previous_screen = .TITLE
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screen = .TITLE
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rl.SetTargetFPS(target_fps)
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}
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update :: proc(state: ^GameState) {
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using state
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frame_counter += 1
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last_frame_time = current_frame_time
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current_frame_time = rl.GetTime()
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delta_time = current_frame_time - last_frame_time
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update_screen(state)
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}
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draw :: proc(state: ^GameState) {
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rl.BeginDrawing()
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rl.ClearBackground(rl.RAYWHITE)
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rl.BeginMode2D(camera)
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draw_screen(state)
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rl.EndMode2D()
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rl.EndDrawing()
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}
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main :: proc() {
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context.logger = log.create_console_logger()
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log.info(state.screen)
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setup(&state)
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rl.InitWindow(state.screen_width, state.screen_height, state.title)
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defer rl.CloseWindow()
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if !ODIN_DEBUG {
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rl.SetExitKey(nil)
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} else {
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log.info("Built with Odin compiler version: ", ODIN_VERSION)
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}
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texture_atlas_image = rl.LoadImage(TEXTURE_ATLAS_PATH)
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texture_atlas = rl.LoadTextureFromImage(texture_atlas_image)
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rl.UnloadImage(texture_atlas_image)
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log.info("Loaded images")
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for !rl.WindowShouldClose() {
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update(&state)
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draw(&state)
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}
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}
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