Collision detection, better camera stuff, random trees, etc

game/game.odin

@@ -16,6 +16,10 @@ camera : rl.Camera2D
 main :: proc() {
 
     rl.InitWindow(1280, 720, "Odin game")
+    flags : rl.ConfigFlags = {.VSYNC_HINT} 
+    rl.SetConfigFlags(flags)
+
+    rl.SetTargetFPS(60)
 
     player.position.x = CELL_SIZE * 5
     player.position.y = CELL_SIZE * 5
@@ -29,7 +33,7 @@ main :: proc() {
 
     fill_world_grid_with_nothing(&world)
 
-    random_trees(&world)
+    place_random_trees(&world)
 
     game_loop()
 }
@@ -53,10 +57,12 @@ game_loop :: proc() {
         
         rl.DrawFPS(5,5)
 
-        pos_string = fmt.aprint("Player POS:", get_player_grid_position(&player))
-        pos_cstring = strings.clone_to_cstring(pos_string)
+        player_grid_pos := get_player_grid_position(&player)
+        player_grid_pos_tile := get_grid_tile(&world, vec2_to_vec2i(player_grid_pos))
+        pos_string := rl.TextFormat("POS: %v : %v", player_grid_pos, player_grid_pos_tile.type)
+
+        rl.DrawText(pos_string, 5, 25, 20, rl.RED)
 
-        rl.DrawText(pos_cstring, 5, 25, 20, rl.RED)
 
         rl.EndDrawing()
     }
@@ -67,9 +73,10 @@ game_loop :: proc() {
 
 update :: proc() {
     
+    handle_player_input(&player, &world)
+    handle_window_resize()
     camera.target = {player.position.x + (CELL_SIZE / 2), player.position.y + (CELL_SIZE / 2)}
 
-    handle_player_input(&player)
 }
 
 draw :: proc() {
@@ -77,21 +84,16 @@ draw :: proc() {
     draw_player(&player)
 }
 
-random_trees :: proc(world:^World) {
-    for x in 0..<len(world.grid) {
-        rand_y := rand.int_max(len(world.grid))
-        for y in 0..<len(world.grid) {
-            rand_x := rand.int_max(len(world.grid))
-            
-            tree := Tile {
-                type = .WALL,
-                tilemap_pos = {0,1},
-                color = rl.RAYWHITE
-            }
-
-            set_grid_tile(world, {u32(rand_x),u32(rand_y), }, tree)
-        }
+handle_window_resize :: proc() {
+    if rl.IsWindowResized() {
+        camera.offset = {f32(rl.GetScreenWidth()) / 2, f32(rl.GetScreenHeight()) / 2}
     }
 }
 
-
+print_grid :: proc() {
+    for x in 0..< len(world.grid) {
+        for y in 0..< len(world.grid) {
+            fmt.printfln("[%d, %d] %v", x, y, world.grid[x][y].type)
+        }
+    } 
+}

game/math.odin

@@ -4,3 +4,11 @@ Vec2i :: struct {
     x: u32,
     y:u32,
 }
+
+vec2i_to_vec2 :: proc(v2i:Vec2i) -> [2]f32 {
+    return {f32(v2i.x), f32(v2i.y)}
+}
+
+vec2_to_vec2i :: proc(v2:[2]f32) -> Vec2i {
+    return {u32(v2.x), u32(v2.y)}
+}

game/player.odin

@@ -7,22 +7,39 @@ Player :: struct {
     position : rl.Vector2,
 }
 
-handle_player_input :: proc(p : ^Player) {
+handle_player_input :: proc(p : ^Player, w: ^World) {
+
+    target_pos := get_player_grid_position(p)
+    
+    // fmt.printfln("MOVING TO: %v : %v", target_pos, get_grid_tile(w, vec2_to_vec2i(target_pos)).type)
+
 
     if rl.IsKeyPressed(.RIGHT) {
-        p.position.x += CELL_SIZE
+        target_pos.x += 1
+        if !will_collide(target_pos, w) {
+            player.position.x += CELL_SIZE
+        }
     }
 
     if rl.IsKeyPressed(.LEFT) {
-        p.position.x -= CELL_SIZE
+        target_pos.x -= 1
+        if !will_collide(target_pos, w) {
+            player.position.x -= CELL_SIZE
+        }
     }
 
     if rl.IsKeyPressed(.UP) {
-        p.position.y -= CELL_SIZE
+        target_pos.y -= 1
+        if !will_collide(target_pos, w) {
+            player.position.y -= CELL_SIZE
+        }
     }
 
     if rl.IsKeyPressed(.DOWN) {
-        p.position.y += CELL_SIZE
+        target_pos.y += 1
+        if !will_collide(target_pos, w) {
+            player.position.y += CELL_SIZE
+        }
     }
 
 }
@@ -37,3 +54,18 @@ get_player_grid_position :: proc(player:^Player) -> rl.Vector2 {
 draw_player :: proc(player:^Player) {
     draw_tile({27,0}, player.position, rl.DARKBLUE)
 }
+
+will_collide :: proc(pos:rl.Vector2, w:^World) -> bool {
+    if pos.y > WORLD_SIZE * CELL_SIZE || pos.x > WORLD_SIZE * CELL_SIZE {
+        return false
+    }
+
+    tile := get_grid_tile(w, vec2_to_vec2i(pos))
+
+    #partial switch tile.type {
+    case .WALL:
+        return true
+    }
+
+    return false
+}

game/tiles.odin

@@ -0,0 +1,23 @@
+package game
+
+import rl "vendor:raylib"
+import "core:math/rand"
+
+tree_tile := Tile {
+    type = .WALL,
+    tilemap_pos = {0,1},
+    color = rl.DARKGREEN
+}
+
+place_random_trees :: proc(w:^World) {
+    for x in 0..< len(w.grid) {
+        for y in 0..< len(w.grid) {
+
+            chance := rand.int_max(100)
+            
+            if chance <= 10 {
+                w.grid[x][y] = tree_tile
+            }
+        }
+    }
+}

game/world.odin

@@ -24,10 +24,19 @@ TileType :: enum {
     FLOOR,
 } 
 
+
 set_grid_tile :: proc(w:^World, pos:Vec2i, t:Tile) {
     w.grid[pos.x][pos.y] = t
 }
 
+get_grid_tile :: proc(w: ^World, pos: Vec2i) -> Tile {
+    if pos.x < 0 || pos.x >= len(w.grid) || pos.y < 0 || pos.y >= len(w.grid[0]) {
+        // fmt.printfln("Target [%v] outside of world bounds", pos)
+        return w.grid[0][0] // Default or error tile
+    }
+    return w.grid[pos.x][pos.y]
+}
+
 fill_world_grid_with_nothing :: proc(w:^World) {
     for x in 0..< len(w.grid) {
         for y in 0..<len(w.grid) {