119 lines
2.3 KiB
Odin
119 lines
2.3 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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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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state: GameState
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ratio: i32
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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 = GLOBAL_SPRITE_SCALE,
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}
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window_width : i32; window_height: i32
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// orignal resolution of space invaders: 256 x 224 px
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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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monitor := rl.GetCurrentMonitor()
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window_width = rl.GetMonitorWidth(monitor)
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window_height = rl.GetMonitorHeight(monitor)
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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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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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}
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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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target: rl.RenderTexture2D
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draw :: proc(state: ^GameState) {
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rl.BeginTextureMode(target)
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{
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draw_screen(state)
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}
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rl.EndTextureMode()
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rl.BeginDrawing()
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{
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rl.ClearBackground(rl.RAYWHITE)
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rl.DrawTexturePro(
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target.texture,
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{0, 0, f32(target.texture.width), f32(-target.texture.height)},
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{
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f32((window_width - (target.texture.width * ratio)) / 2),
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0,
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f32(target.texture.width * ratio),
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f32(target.texture.height * ratio),
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},
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{0, 0},
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0,
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rl.WHITE,
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)
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}
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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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rl.InitWindow(1200, 720, "title")
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defer rl.CloseWindow()
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rl.RestoreWindow()
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rl.SetWindowState({.WINDOW_RESIZABLE, .WINDOW_MAXIMIZED})
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setup(&state)
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state.screen_width = 720
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state.screen_height = 520
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target = rl.LoadRenderTexture(state.screen_width, state.screen_height)
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defer rl.UnloadRenderTexture(target)
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ratio = i32(window_height / target.texture.height)
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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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