Neaten player logic and add collisions.

src/player.odin

@@ -3,78 +3,126 @@ package game
 import "core:fmt"
 import rl "vendor:raylib"
 
-Direction :: enum { LEFT, RIGHT }
 Player_State :: enum { IDLE, WALK, ATTACK }
 
 Player :: struct {
-	pos: rl.Vector2,
-	direction: Direction,
-	state: Player_State,
-	ani_state: AnimationState,
+	pos:			  rl.Vector2,
+
+	velocity:		  rl.Vector2,
+	speed:			  f32, // max move speed
+	accel:			  f32, // how fast to reach speed
+	friction:		  f32, // how fast to stop
+
+	state:			  Player_State,
+	animation:		  AnimationState,
+	flipped:		  bool,
+
+	collider_offset:  rl.Vector2,
+	collider_w:		  f32,
+	collider_h:		  f32
 }
 
 player_init :: proc(assets: ^Player_Assets) -> Player {
 	player := Player{}
-    player.pos = {320, 320}
+    player.pos = {39, 39}
+	player.speed = 100
+	player.accel = 600
+	player.friction = 500
 	player.state = .IDLE
-	animation_play(&player.ani_state, &assets.clips[.IDLE])
+	player.collider_offset = rl.Vector2{8, 15}
+	player.collider_w = 16
+	player.collider_h = 10
+	animation_play(&player.animation, &assets.clips[.IDLE])
 
 	return player
 }
 
-update_player :: proc(player: ^Player, assets: ^Player_Assets, camera: rl.Camera2D) {
+get_player_center :: proc(player: ^Player) -> rl.Vector2 {
+    return rl.Vector2{
+        player.pos.x + TILE_SIZE / 2,
+        player.pos.y + TILE_SIZE / 2,
+    }
+}
+
+get_player_collider :: proc(player: ^Player, pos: rl.Vector2) -> rl.Rectangle {
+	return rl.Rectangle{
+		(pos.x + player.collider_offset.x),
+		pos.y + player.collider_offset.y,
+		player.collider_w,
+		player.collider_h,
+	}
+}
+
+update_player :: proc(player: ^Player, assets: ^Player_Assets, camera: rl.Camera2D, game_map: Game_Map) {
     moving := false
     dt := rl.GetFrameTime()
+	input_dir := rl.Vector2{0,0}
 
-    if rl.IsKeyDown(.W) { player.pos.y -= PLAYER_SPEED * dt; moving = true }
-    if rl.IsKeyDown(.S) { player.pos.y += PLAYER_SPEED * dt; moving = true }
+    if rl.IsKeyDown(.W) { moving = true; input_dir.y -=1; }
+    if rl.IsKeyDown(.S) { moving = true; input_dir.y +=1; }
+	if rl.IsKeyDown(.A) { moving = true; input_dir.x -=1; player.flipped = true  }
+	if rl.IsKeyDown(.D) { moving = true; input_dir.x +=1; player.flipped = false }
 
-    if rl.IsKeyDown(.A) {
-    	player.pos.x -= PLAYER_SPEED * dt
-    	player.direction = .LEFT
-    	moving = true
-    }
-    if rl.IsKeyDown(.D) {
-    	player.pos.x += PLAYER_SPEED * dt
-    	player.direction = .RIGHT
-    	moving = true
+	has_input := input_dir.x != 0 || input_dir.y != 0
+    if has_input {
+        input_dir = rl.Vector2Normalize(input_dir)
     }
 
+    // Move velocity toward target (accelerate) or toward zero (friction)
+    target_velocity := input_dir * player.speed
+    if has_input {
+        player.velocity = rl.Vector2MoveTowards(player.velocity, target_velocity, player.accel * dt)
+    } else {
+        player.velocity = rl.Vector2MoveTowards(player.velocity, rl.Vector2{0, 0}, player.friction * dt)
+    }
+
+	// Check for collisions
+	new_position := player.velocity * dt
+	new_x_pos := rl.Vector2{player.pos.x + new_position.x, player.pos.y}
+	if !check_map_collision(get_player_collider(player, new_x_pos), game_map) {
+		player.pos.x = new_x_pos.x
+	} else {
+		player.velocity.x = 0
+	}
+
+	new_y_pos := rl.Vector2{player.pos.x, player.pos.y + new_position.y}
+	if !check_map_collision(get_player_collider(player, new_y_pos), game_map) {
+		player.pos.y = new_y_pos.y
+	} else {
+		player.velocity.y = 0
+	}
+
+	// TESTING
 	if rl.IsMouseButtonPressed(.LEFT) {
-		// TESTING
 		mouse_pos := rl.GetMousePosition()
 		screen_space := window_to_screen(mouse_pos)
 
 		x := screen_to_world(screen_space, camera)
 		fmt.printf("Mouse pos -> world pos: %v\n", x)
-
 		v := world_to_screen(x, camera)
 		fmt.printf("world pos -> screen pos: %v\n", v)
-
 		y := world_to_grid(x)
 		fmt.printf("Mouse pos -> grid coord: %v\n", y)
-
 		z := grid_to_world(y[0], y[1])
 		fmt.printf("grid pos -> world pos: %v\n", z)
 	}
 
     player.state = moving ? .WALK : .IDLE
-
-    animation_play(&player.ani_state, &assets.clips[player.state])
-    animation_update(&player.ani_state, dt)
+    animation_play(&player.animation, &assets.clips[player.state])
+    animation_update(&player.animation, dt)
 }
 
 draw_player :: proc(player: ^Player) {
-	clip := player.ani_state.clip
-	src_rect := animation_frame_rect(&player.ani_state)
+	clip := player.animation.clip
+	src_rect := animation_frame_rect(&player.animation)
 
-	if player.direction == .LEFT {
+	if player.flipped {
 		src_rect.width = -src_rect.width
 	}
 
 	dst_rect := rl.Rectangle{
-		x = player.pos.x - f32(clip.frame_width)  / 2,
-		y = player.pos.y - f32(clip.frame_height) / 2,
+		x = player.pos.x,
+		y = player.pos.y,
 		width  = f32(clip.frame_width),
 		height = f32(clip.frame_height),
 	}